2 meter 70cm antenna

2 meter 70cm antenna I got lucky, because I was using 147. Yagi with 5 Elements on 2 m, 8 Elements on 70cm and one Feedpoint. J-Pole Antenna Design -Part one. The MFJ-1724B is the worlds best selling dual band 2 Meter/440 MHz magnet mount mobile antenna! Its perfect for your dual band mobile or HT. j-pole antenna super j-pole antenna cubic quad antenna arrow antennas dual band j-pole note: this antenna was disigned by arrow antennas 2m - 70cm direct Diamond ® Antennas are sold through authorized dealers. Shop with confidence. A quick review of the Arrow Antenna dual band j-pole. The reflector and director element spacings are equal at 16 inches. If mounting it outside, be sure to wrap the N-connector appropriately in self-amalgamating tape to prev 2 meter antenna length? Hi All, I have a Diamond dual band (2m/70cm) antenna mounted on a teraflex mount. 82, 151. This multiband vertical designs provide 9 band coverage encompassing the 6, 10, 12, 15, 17, 20, 30, 40 and 80 meter bands. The antenna described here is a direct-connect dual-rectangle beam for use on 70 cm between 440 and 450 MHz. Dual Band - 2 Meters & 70 cm - Solid Aluminum - End Fed (SO239 Connector Only) Having both 2 Meter and 70 cm Bands in a compact, two foot long package, without having to bother with a duplexer is just a real lifesaver to most operating environments. 7, 2012 about 2 meter 5x5CP and 70CM 8x8CP I have a 8x8 UHF and a 5x5 VHF from Gulf Alpha and I love them. Same basic design as #2, but cut for 70cm. 0 MHz This is a quick video of a simple J Pole antenna build for 2 meters. We have the broadest product line in the industry including Receive Only, Rx/Tx and Rural Telephony antenna systems. You will not have to worry about antenna length. 00. You may have also observed that in many places (such as a car) 70cm seems to "get out" better. A Five-Element, 2-Meter Yagi for $20 (457,324 bytes, PDF file) QST July 1999, pp. Ed Fong WB6IQN) with 100% lifetime warranty and help out his graduate students at the same time. 95. amateurradio. 100 MHz, which just happened to both yield a length of 19. 9 cm. The Jetstream JTBM270 is a dual band beam for 2m and 70cm. Howto – 2 Meter Slim Jim antenna from Ordinary Wires Slim Jim (J Integrated Match J-Pole ) is probably the most easiest and powerful 2 meter antenna to build provided you have the exact measurement and material to build it. The 2-meter band is also used in conjunction with the 70-centimeter band, or the 10-meter band and various microwave bands via orbiting amateur radio satellites. Phasing 2 big wheels mounted one above the other will result in a gain (in the horizontal plane) of about 5dBd. To construct the antenna, first select a suitable length of grey 25mm conduit (as a minimum 1m but if you make it longer, you will have more room below the coil to attach to your antenna support). Many RASON members truly enjoyed last month's collinear antenna. Description:144 - 148 MHz, loop antenna. 3 elemente 2 Meters and 5 elements UHF. 5 metres long, and 70cm (433MHz) will be 0. Cushcraft Amateur Radio Antennas. The Yagi beats the Log Periodic by 2-S on 148Mhz, when pointed at my house in Brea, but the Elk beats the Yagi by 3-S on 440Mhz. Don Murray W9VE Building a Dual-Band Antenna Mentorfest 10/23/04 2 Use SWR meter to adjust all-thread and position of bracket on WB6IQN reviews the theory of the dual band 2 meter / 70 cm J-pole antenna and then makes detailed measurements of a practical, easy to replicate, “roll-up” portable antenna. (2m) crossed satellite antenna 15 are over the 2 RTTY lines, then fine adjust so the twin A Tri Band Antenna for 2 meters, 220 MHz, and 70cm Antenna Without Radials By: Edison Fong (WB6IQN) (2 meter), 220 MHz, and 70cm amateur band. Original pinner wrote: 2 Meter Slim Jim Copper Tubing Antenna by I build these all the time and I use one now and then Find this Pin and more on DIY by Michael Alessi . Portable and stealthy antennas for amateur radio, commercial and scanner applications Build A 9 dB, 70cm, Collinear Antenna From Coax By N1HFX Recently the RASON technical committee was hard at work at the repeater site repairing our 2 meter repeater antenna. . Unfollow 2 meter mobile antenna to stop getting updates on your eBay Feed. my alinco dual band 2 meter/70cm ham radio display starts to blink shortly after power up I HAVE THE ALINCO DR 605 T DUAL BAND FM TRANSCEIVER. I have the same antenna and its excellent on 2 meter. A 2 Meter and 70 CM Portable Tape Measure Beam Work the OSCAR ham satellites or go transmitter hunting with this inexpensive portable dual band handheld tape measure Yagi. us store. This antenna is small and looks great and looks to be of quality build, however its electrical functionality is grossly unacceptable, I do not recommend the purchase of this antenna. Any reuse or redistribution of the contents of this website are strictly forbidden without authorization from MFJ Enterprises, Inc. The antenna helps to reduce your precipitation static and lower your background noise for clear reception and transmission during use. Yagi Antennas for 144 and 432 MHz. But, you could spend more, or less, and still get a decent dual you want to use this antenna for 2-meter SSB and CW, just assemble the boom so the ele- ments are parallel to the ground, not perpen- dicular. I need to think what I “need” more at the moment. 95 Jetstream JT524SMA 146/445MHz Dual-Band Antenna $18. A Tri Band Antenna for 2 meters, 220 MHz, and 70cm Antenna Without Radials By: Edison Fong (WB6IQN) US patent –9,608,336 (2 meter), 220 MHz, and 70cm amateur Although not designed as a 440 70cm antenna, it works pretty good anyway. Jelinek N6VNG 2 Meter 5/4 Wave antenna in PVC case Mike Martell N1HFX Crossed dipole turnstile antenna 2 Meters Jay Hennigan, WB6RDV X-Quad antennas are comparatively compact antennas, suitable for terrestial and satellite communications. Driven element dimensions are L = 5. It is inversely proportional to the frequency which means the wave with higher frequency will have shorter wavelength. 2. I separated my uplink and downlink omni antennas by 30 feet, which reduced my mode JA desense. Free Shipping! Cushcraft A719B 440 MHz 19 The DBJ-1: A VHF-UHF Dual-Band J-Pole choice in the 2 meter band. This calculator is designed to give the vertical length (height) of a particular antenna, for the frequency and wavelength chosen. 99 *MSRP(Manufacturers Suggest Retail Price) in U. Can also be used to transmit on MURS or 2 Meter bands. 95 CMA-SBB-2NMO Dual-Band Mobile Antenna Black, NMO Mount 18" 2 Meter This antenna has 60 degree beam width and small size is perfect for portable during public service events, hand held or atop 2 sections of 5 ft mast, balloons and rockets, to give some gain and at the same time minimize multipath ghosting and drop outs. This page contains some antenna designs for the 2 meter amateur (144-148 MHz), MURS (151. See pictures of how I built a 5 element Dual Band beam using 1/2” PVC pipe and 1/4” copper tubing. The Slim Jim Antenna is an end-fed folded dipole antenna that has a gain of 6 dbi and a nice low RF take off angle. We promise small quantity can be ship out once receive payment, big quantity can be shipping out within 1 week after receive payment. The Watson base station antennas have earned themselves an enviable reputation, offering both value for money and excellent performance. 6/1 in the middle and up to 2. Same radio in my Jeep: it's handy with two identical radios, no mental shift when operating one, then the other. Every ham likely has made a 2 meter antenna from a discarded cookie can or a pizza pan. This design weighs in at 2. This design exhibits a very clean pattern and is perfect for RDF use. Add to Wishlist | Add to Compare; Diamond X-50N. Millimeters were used for many of the measurements but can be converted to inches by dividing millimeters by 25. Features: Fiberglass randome With the HT antenna I could just reach a nearby friend Don (WA6GXB SK) running 5 watts. Comparison with the calculated results at contained in Figure 42. Larsen NMO2/70B Dual Band Coil and Factory Tuned Black Whip for 2m/70cm Amateur Radio Frequencies, NMO VHF/UHF antenna VHF: Center Loaded 1/2 λ UHF: Collinear Gain (2m/70cm): 2. 2 meter FM simplex channels can vary significantly in different regions. Dualband 2/70cm Base Antenna This was the first antenna I built using the antenna to control the driven element impedance. After observing the antenna in a bit of wind, I noticed that it rotates quite a bit around the vertical axis when the wind speed gets over 10 mph. Dollars . On the 70cm band, SWR was below 2. Averaging 4. A single antenna can cover the entire amateur 2m/70cm allocation with more than acceptable SWR. Radio Shack # 21-961 3/8"-24/SO239 Mount (Mobile CB Antenna) 2 METER 5/8 WAVE ANTENNA Model 2M-4 MSRP* $26. 5; further shortening then increased the SWR to about 3 at 146 MHz and was stopped. A 2-Meter Vertical Dipole Array, KG4JJH Page 1 of 6 A 2-Meter Vertical Dipole Array Build this 2 or 4-Element VHF repeater antenna with up to 9. Find great deals on eBay for 2 meter 70cm antenna. 5⁄8 wave 146MHz 6dBi 5⁄8 wave x 2 446MHz 8dBi 5⁄8 wave x 5 Specific Freq. 2:1 SWR or less at 146MHz), and the SWR is 1. I have two IAC Double Bazooka dipole antennas for 75 meters (mounted at 48') and 40 meters (mounted at 35'). 8 to 146. Military Car 2 meter amateur mobile radio Our serives: Trail order is acceptable, all the products are best quality with 18 months warranty. Assemble the Stainless Steel Hardware and Aluminum V-Bracket into the two mounting holes at the base of the Antenna as shown in the picture above. 6 MHz), 70 cm (420-450 Mhz), and post February 2009 UHF-TV bands. I have had good success with both, but regularly use the balanced feeder Slim Jim mounted on a 9m fibreglass pole, as can be seen in the photo at the bottom Gives me 2m/70cm for local emcomm, ARES and the message handling nets locally. 5/1 at the lowest edge and around 1. I used 1″ thin-wall PVC pipe, aluminum tape, and RG-8X coax. Invented by Les Moxon, G6XN, the MOXON is a stealthy gain antenna that's inexpensive and fun to build. Cushcraft achieved a major breakthrough in the development of an HF multiband vertical antenna that has been specifically designed for use with a tuner and amplifier. Antenna is designed to last indefinately while giving superior performance. The antenna can be stuck down the back of the shirt, carried, or easily mounted on bicycles, etc. Operates without radials. The heart of my antenna farm is found on a 50' AN Wireless commercial grade antenna tower, and the prime instrument is a seven-element Force 12 C-3 Yagi for 20-15-10 meter operations. 3dBi of gain on 2M and 11. This is known as cross band repeating. By Wayne Overbeck, N6NB www. org The … K6MYC on Antenna Testing Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear. Add to Cart. 2M CPFL Antenna. The copper J pole that does 2m and 70cm comes up the most in my searches. CMA-SBB-2 Dual-Band Mobile Antenna Black, UHF Mount 18" 2 Meter 70cm 2. The "big wheel" is a horizontally polarized omnidirectional antenna . 7" and H = 1/2" Elements are 1/8" diameter. $79. Inernational HAM Magazine ­ 100% HAM RADIO (70cm) + 7 El. Element is 5/16 inch diameter Aluminum solid rodStainless Steel U-Bolt mast clamp will fit up to 1-1/2 Find great deals on eBay for antenna 2 meter. 5/1 at the upper edge. collinear 144 homemade. I'm looking to get a 2m/70cm antenna for my car. Very pleased with the J-Pole I received, quality built, very well packed, fast shipment, reasonably priced, performs in an outstanding manner with incredibly low SWR. This is Depending on the 2 meter and 70cm frequencies you choose for tuning your antenna, you might have to compromise a little. A J-Pole for 2-meters and 70-cm - related links We thought you might be interested also in these additional resources, currently listed under our Antennas/J-Pole category: Homemade 2M/440 J-Pole Antenna - A 2m 70cm Dual Band J-Pole antenna for 35 USD. A tuner is only suitable to two types of antenna viz. 88, 151. wifi antenna collineare teoria The Diamond Antenna X50A / X50NA is a dual band 2m/70cm high performance gain vertical base antenna for base/mobile two way radios. Coat Hanger 2 Meter Yagi Antenna. We can use The two meter antenna is tuned to 146MHZ (1. I have a 5/8th over 5/8th vertical collinear antenna hanging in a tree at some 30 odd feet high, but I never heard anything on it, except on FM. In a previous post we debunked the 2 meter 5/4 wave antenna as actually an end-fed full-wave antenna resulting in a poor radiation pattern hardly optimal for terrestrial use. 4 for those who are not familiar with the metric system. This antenna was designed for FEMA and is ideal both as a base antenna as well as an emergency antenna. 95 Comet SBB-1 Mobile Dual-Band VHF/UHF 2m/70cm Vertical Antenna $42. 14dB. An Ultra-Simple 2-Meter Antenna You’ll get J-pole performance from this base station vertical antenna built with coat hangers and PVC pipe. We call the antennas Slim Jims and they pack a lot of punch but do not unpack your wallet. Free BNC handheld adapter. The fold-over design has a hinge that rotates 360 degrees inside of the socket, so it can fold in any direction when needed. The collinear antenna is designed to be mounted vertically. 08 inches for the longer of the two 3/8″ rod elements. Comes in 2 sections for easier transport. Normally, high gain directional antennas are to be used for VHF or UHF communication, in order to multiply the radiated energy into the desired direction or get rid of interferences from other than the desired direction. bz/2m-70cm_vertical_dipole_antenna. Re: 2 meter antenna plans Post by 'Doc » Thursday, 15 November 2012, 16:01 PM The first step is to decide what kind or type of antenna you want, 1/4w, 1/2w, 5/8w, etc. 8. The antenna acts like a slim jim on 2m and a jpole on 70cm. When I tried running 100 watts to my 2 meter omni antennas, severe desense blocked my 70cm downlink receiver. Our UHF Two and Three Element Yagi/Beam antennas can be tuned for frequency between 420-470 MHz including 440 MHz amateur, GMRS, LMRS or Business bands. seal terminations with coax- seal. This will direct more of your output power when transmitting, while at the same time reducing interference and increasing signal strength when receiving. I wanted an antenna that was simple, horizontally polarized and omni directional. 2 Meter Slim Jim Copper Tubing Antenna by I build these all the time and I use one now and then The Quagi Antenna Turns 40. With a little more weatherproofing, it will make a fine dual-band base station antenna of moderate gain (2. Measurements- 2m Length 18 and 5/8 of an inch long or 47. Once one of the antennas was fully assembled I used an SWR meter to determine if it was close to resonance at the desired frequency and if it wasn't I determined if it was high or low in frequency. With the Beam I was easily able to make the trip using only 50 milliwatts. My workshop under the garage needed to have a separate antenna, preferably hung from a nearby tree. For details: http://www. While an amateur license is required to transmit on the 2 meter and 70 cm bands, the MURS frequencies are unlicensed. Contact one of your local Diamond ® Dealers for current price & availability. Currently, I only own a 2m HT, (Yeasu, VX-170) and a 2m portable roll up antenna. A 146 Mhz J-Pole Antenna A 2 meter (146 Mhz) J-Pole antenna that is inexpensive, and easy to build. There is a waiting period for the Gulf Alpha products, other than that they are very solid and well built antennas. Adjust your radio to 146. Is that the best I can do? I'm a Ford master tech so I have lots of tools and can follow directions. 5 metres of ladder line as the main antenna that can roll up neatly in a coil and can be used hanging from a curtain rail above a window, dropped down from a tree, or taped to the side of a fishing pole Play-by-play With the five-turn bottom coil, the SWR measured 3 at 146 MHz and ~1. GigaParts. Version 1: Ultralight with 3,2-mm-Elements. Optimized 6-element UHF Yagi Antenna RE-A430Y6 . Designed for CW and SSB, Horizontal polarity. A Pedestrian-Portable 2m/70cm Walking . If you decide to make a 2m antenna, you’ll end up with 1. Build a DIY 2 Meter Vertical Antenna Then I took 4 pieces of the copper wire, which will be used for the antenna’s radials, and bent a little hook in one end, and then slid one 4-40 screw in the hook of the wire then crimped down the wire around the screw as seen in the photo on the right. HTEK Dual-Band 2m/70cm Yagi. Vertical collinear antennas for the 2 meter or 440 (70cm) band. Although bigger than the previous 2 omnidirectional antennas, a single big wheel has a gain of roughly 2-3dBd. The plans for this function of the calculator is to give all of the needed sizing to construct a good 5 element quad antenna for amateur radio use. On the lower gain (6 element) antenna, it looks like the loss reduces the gain by more than 1 dB for the lower frequency, and about 0. The plans are readily available online from a number of sources. A Slim Jim for 2m (145MHz) will be 1. The 2 meter coffee can antenna is easy to make and you’ll have loads of fun making contacts with it! The coffee can antenna is actually a ground plane antenna made using a large coffee can, or other similar size tin can, in place of using radials A crossed-dipole turnstile antenna for 2-meter ARDF I came up with this antenna design for use with hidden transmitters on international-rules ARDF events. Please NOTE: Because both sets of elements are on the same boom you may or may not experience some desense on the 70CM downlink. This easy to build dual band VHF/UHF antenna makes a great project for the new ham that is ready to get on the 2 meter and 70 centimeter amateur radio bands. 34-37 Get about 10dB from a modified Radio Shack FM broadcast receiving antenna . *2 Meter Base Combination Antenna* Cleaning up the Antenna Farm By: gm3 13 December 2002. 2 Meter 70CM Radio - 18 results from brands Workman, VERTEX, products like ALINCO DR-735T DUAL BAND 2 METER 70 CM 144/440 MHZ VHF UHF MOBILE RADIO FS, 144 148 & 440 450 MHz VHF UHF Glass Mount Antenna Dual Band Radio 2 Meter 70CM, VERTEX FT-60R Dual Band Handheld 5W VHF / UHF Amateur Radio Transceiver OPEK TS-10 - Tri-Band Ham Radio Base Station Antenna - 70cm 2M 6M The cookie settings on this website are set to 'allow all cookies' to give you the very best experience. Thanks for watching and 73. All information, images, and documents on this website are the sole property of MFJ Enterprises, Inc. 2 at 144 MHz. 2:1 at about 438MHZ - not ideal, but usable, as shown in Figure 41. THE 2 METER SLIM JIM COPPER TUBING ANTENNA PROJECT BY RICHARD KE5FXU Build a 9dB, 70cm Collinear Antenna. 2 Meter 70cm Quad Antenna Plans. Build a DIY a 2 Meter Vertical Antenna Here is the list of parts needed to build a 2 meter vertical antenna: You have just found the webstore of the highest quality hand made portable antenna on the market. The basic geometry of the antenna is shown in the following figure: An interesting feature of this antenna is that both dual-rectangular elements are electrically connected together, so strictly speaking, the antenna is a single Build A 9 dB, 70cm, Collinear Antenna From Coax Recently the RASON technical committee was hard at work at the repeater site repairing our 2 meter repeater antenna. The 70-centimeter or 440 MHz band is a portion of the UHF radio spectrum internationally allocated to amateur radio and amateur satellite use. The antenna offers a gain of about 10 dB, is All information, images, and documents on this website are the sole property of Cushcraft Any reuse or redistribution of the contents of this website are strictly forbidden without authorization from Cushcraft 2 meter / 70 cm Antenna would it be possible to mount a 2 meter 1/4 wave whip and a 70 cm 1/4 wave whip on the same piece the 70cm side probably won't need The 2 meter stack is also almost 10 feet higher than the 70cm stack. 5 or 10 element versions up to 13 dBd gain on 70cm. The elements diameter of the antenna may vary between 510mm and the dipole diameter may vary between 812mm (12mm recommended) without the need of changing anything to the length or spacing. Since my article on Simple Wideband Yagi’s appeared in September AR I have had a number of people contact me advising that it would be better to use the grey electrical conduit rather than the orange version I did. X50A DualBand Base / Repeater Antenna - An excellent choice where ruggedness is required in a medium-gain, dual-band application. 2m / 70cm 9 elements yagi (#1) (February 2012) Some time ago I decided to get a new 2m antenna, one which would enable me to work more DX stations, in particular the ones in and around the United Kingdom. n6nb. Most 2M Aluminum Slim Jim Antenna. pdf) by W1TRC HERE . I've been using Antenna Specialties commercial antennas for the past few years on 2m only. CUSHCRAFT A6270-13S - TRI-BAND (6 & 2 Meter / 70cm) BEAM ANTENNA. . All polarization planes possible. 2 dbi) and stealthy appearance (paint it the same color as your roof then clamp it to a vent pipe). Independent element type ensures good gain and performance in comparison with mono band beams. * VHF/UHF Dual Band Gain Base Antenna Great for 2 Meter & 70cm Amateur Bands! Magnetic Mobile Antenna Ham Radio 2 Meter / 70 cm 140 to 150 and 440 to 470 MHz. Increase your range by selecting Cushcraft's 2M/70cm wideband Yagi beam antennas. WHEN I POWER UP THE RIG, THE DISPLAY STARTS TO "BLINK" SHORTLY AFTER POWER UP. strap coax along antenna with cable ties. 570, 154. The original goal was to have an antenna that I could use for 2 meter SSB. pdf Free Download Here Simple J-pole antenna - Welcome to the Dallas Amateur Radio Club The antenna had a great SWR profile across the 2 meter band (as expected) but did not do as well on 440. Construction Plans for the Model J146/440. 2 Meter Coffee Can Antenna. If the antenna is small enough to fit on the inside of your window, then it must be a “shortened” antenna — a true 2-meter-band dipole is about 1 meter (1/2 wavelength) long. If the reading is more than 1. 8 million hits per year, since 2003 it's all about Hams Helping Hams, the underlying theme of the MOXON Antenna Project. The Tram 1480 Amateur Dual-Band VHF-UHF Antenna is eight feet tall and made of durable fiberglass construction. 20 Element Cross 2 meter Contest - EME Yagi Antenna PA144-CROSS-20-6 The best Low Noise PLUS - CROSS Yagi Antenna 10 + 10 element. Ideal for users of Icom IC706 series and Yaesu FT100 radios. 060 MHz and 442. 92cm R/O Ku-Band Offset, Series 1921 Data Sheet. Using some scrap from the 70cm elements, clean and solder a length of scrap element to the end of two 36 inch rods so they are longer than the lengths specified in Figure 8: 2m Spacing and Length. Receives the commonly used frequencies in the 150, 450 and 800 MHz bands. Construction You’ll need hangers that are 16 inches wide; the 18-inch kind because they ca not be tuned to 2 meters. Using the ARRL frequency range allocated for FM simplex is a starting point but 15, 20, or 30kHz spacing is the million dollar question. WB3AYW HIGH GAIN 2 Meter OR 440 BAND COLLINEAR ANTENNAS. 580 mhz and check your SWR reading. Triband 2M/220/70cm HT Antenna Extended receive range: 118-160MHz 250-290MHz Deluxe Discone Antenna for general purpose scanning. 2-METER 3-ELEMENT VHF YAGI ANTENNA homemade and home brew MAGNETIC LOOP ANTENNA FOR VHF homemade and home brew 70cm 10-ELEMENT UHF YAGI ANTENNA homemade and home brew The reference antenna is a 2-meter vertical dipole Antennas, 'The Aerial Here Is - CQ Amateur Radio How To Build 2m 70cm Vertical Antenna Created Date: This antenna is based on articles "A Parasitic Lindenblad Antenna for 70cm" and "An EZ-Lindenblad Antenna for 2 Meters" by AA2TX, published in QST magazine. 2-meter Simplex FM Frequencies by joel Sampson / N5LXI. 7dBi of gain on 70cm. , And is predicted to have better than 6 dBd gain! This antenna is for the 2-meter Amateur radio bands and will easily handle 5 watts of the average handy talkie. Description. It works with Baofeng, Wouxun and other amateur ht two way radios (SRJ77CA is specifically made for Wouxun radios). Starting out in the HAM radio craft is challenging, mostly rewarding but can be aggrievating and disappointing when trying to make the little 2 Meter work outside its parameters. 95 Manufacturer Tram Product Narrative Dual Band 2M/70cm Base/Repeater Antenna. Again by convention, but the convention arises because (if I understand correctly) horizontal dipoles typically have more gain, and because a horizontal dipole is a simple, efficient freestanding antenna. Antenna Book section on 2 meter Yagi antennas, and from experiments with a field strength meter and different length elements and spacings. 144 MHZ, 2 METER, LOOP, ANTENNA, HAM RADIO - $49. These antennas perform well on 70 cm with about 1/8 watt reflected, however on 2 meter the reflected power is DualBand 2M/440MHz mobile antenna Very short yet efficient antenna, mainly used in metropolitan areas where extended range is not critical. This antenna is unique in that it is enclosed entirely in 3/4" PVC which makes the design a little more complicated. Boost your signal with our selection of VHF/UHF beam antennas! We offer a huge selection of Yagi antennas, including cross-polarized and circularly polarized, from top brands like M2 Antennas, Cushcraft, MFJ, and Diamond Antenna. Dual Band Base Station – DBJ-1 - covered under US Patent 9,608,33 Why buy from imitators? Buy it from the original inventor (Dr. On the other hand, you should use horizontal polarization if you are attempting 2 meter SSB or other types of DX/weak-signal work. Saving up funds to go HF but for the nonce this works. The secret formula I will leave for the history books. Can you use a pipe cutter or a hack saw, can you solder – then here is how to build a SIMPLE ”J” antenna that will more than double your 2 meter (and even 440) performance! by Dale “Kuby” Kubichek, N6JSX pedance at the overall antenna feed point A Simple Fixed Antenna for tire 2-meter band. (MHz) 144-148 & 440-450 MHz Gain The Antenna Elmer By AC3L & N3LSS -- Design your own HF/VHF/UHF dipoles, Folded dipoles, Inverted Vees, Ground Plane, Half Wave Vertical, 5/8 Wave Vertical, Quads, 2 Meter Beams, Quarter wave line matching and lots more. A simple ham radio 2 meter and 70 cm antenna for fixed or portable use. This month I decided to build a 2 meter 5/4 wave antenna. J Pole Antenna. portable antenna equipment yg27 35 dual band top spec 2/70cm. 2 meter 440 Triband HT antenna, 2M/220MHz/440MHz HT antenna. To scale this antenna for any other VHF/UHF frequency, read the ARRL article (. Amateur Base Antennas : Arrow: CR 146/440 Corner Reflector 2m/70cm: GP 52 Vertical 6m: GP 146 Vertical 2m: GP 146/440 Vertical 2m/70cm: OSJ 146/440 Vertical 2m/70cm: Chameleon: V 2L Vertical 80m-70cm After researching and looking at all the possible solutions for a antenna that I either wanted to build or buy for 2 meter and 70cm use, I decided to attempt building a Super J-Pole. extended collinear antenna design. Use it for The 2 Meter band tape measure beam antenna is a 3 element Yagi with about 7. 1) a single long wire using ground as the counterpoise and 2) a balanced antenna of some kind. The ITU amateur radio allocation is from 430 to 440 MHz; however, some countries, such as the United States, allocate hams 420 to 450 MHz. Product Description. Carl O. Covering 144 Mhz – 146 Mhz and 430 Mhz to 440 Mhz. This was based on the original WA6SVT completed antenna. The antenna seems to load up ok on the 70cm band, but the predicted pattern is really awful. This lightweight antenna is perfect to use for fox hunts or as a portable directional antenna for public service events. $279. 79" and 0. yagi antenna vhf Hands down best 2 meter base vertical antenna. Prodelin Corporation is the world’s largest manufacturer of Rx/Tx VSAT antennas. Consists of a 3-element yagi for 2m and a 5-element yagi for 70cm. Particularly used in a city or area where the repeater sites are generally higher than the mobile station due to the pattern having an uptilt. i use a scorpion antenna: nice and small, works on 2m and 70cm V51JP To view links or images in signatures your post count must be 10 or greater. LS2 Ham radio 2 meter 70cm 440 Rugged Repairable Emcomm antenna hang-n-go. Perfect for VHF Contest or EME work. The Image below shows the materials you will need to build a 2 meter 1/4 wave vertical antenna for the 146 mHz. This is our latest antenna featuring coverage in a single antenna - 2 meters, 220MHz, and 70cm. Addition of MX62M duplexer couples HF/VHF outputs to single coaxial connection. Diamond HV7A is a mobile antenna system with 5 band capability: 70cm, 2m, 6m, and 2 HF bands. by: Alinco. Simple Wideband Yagi’s for 2m and 70cm – Errata and extra pictures. ham radio antenna package 2m/70cm diamond antenna+cable+swr/power meter+brackets. A Tree Friendly 2 Meter Halo Antenna Having purchased an all-mode, all-band (160m - 70cm) transceiver, I became curious about what 2-meter weak signal operations have to offer. The pattern and the currents of the Yagi are shown down. This is a simple and quick design for a collinear antenna. Alinco DR-735T Dualband 2m Meter 144 - 148 MHz 70cm 430 - 450 MHz Radio with Color Changing Faceplat. This is based on the fact that the orange version is intended for inside or underground use where there is Antenna for 2M/70cm. Simply attach a SWR meter between the antenna and the radio. For Base or Mobile use. I started with 3/4" and 1/2" fiberglass tubing from Max-Gain and 0. You can point the antennas at stations while you are in QSO with them. Note in picture above, the outer most portion of the antenna is the aluminum tubing. 70cm Length 6 and 1/4 Inches long or 16. 2 Meter Copper J Pole Dr. Matching is 6m/2m/70cm Yagi Antenna Built from Old TV Antenna by KGØZZ This turned out to be a great little antenna. Crossbanding works most excellent. summary of the desired specifications for a multi band 2 meter, 220 MHz, 70cm antenna was composed and is given below: Must be easy to erect during an emergency. This antenna evolved during my search for a beam with a really great front-to-back ratio to use in hidden transmitter hunts. The 2 1/2' length has proven practical, so I haven't built any other versions. Dual Band (2 Meter/70 cm) Solid Aluminum J-Pole. entire 2-meter band. I've been producing these antennas professionally for nearly a decade now and have sold over 15000 units. It has been 40 years since the VHF-UHF Quagi antenna--a combination of the desirable features of a Yagi and a cubical quad--was developed and the design was first published in the newsletter of the Southern California VHF Club, a forerunner of today's Western States Weak Signal Society. Length Foot Wind MPH; X30A: 2m / 70cm: 2m: 1 1/2l 70cm: 2 5/8l: 3. On the higher gain antenna, where the loss would have a greater effect, the gain is reduced by about 0. Compact and lightweight dualband yagi antenna for 2m and 70cm, with one common connector. -Ultralight-Yagi for 2m can be used on 70cm with an SWR of 1,5 without any changes. Obviously there are many things that may have an effect such as environment/terrain, output power, and antenna. Dual Band Antenna for 2m and 70cm. Even though this is an unbalanced tuner, there is little point using an unbalanced output (coax). The goal here is to put up a cheap, easy, and quick 2-meter antenna that is simple and unobtrusive, but works quite well. HTEK Dual-Band 2m/70cm Yagi - OUT OF STOCK. Element measures around 14 inches in diameter. 95 $275. The distance between one point to another adjacent point in a wave is known as the wavelength. Arrow Antenna 4 Element 2 Meter Yagi. My main shack location has a commercial 2M J-Pole Dual band mounted on a short mast. overall size for a 2-meter antenna! Now desired frequency in the 2-meter band to A portable Quad for 2 Meters ARRL Product Review of the M2 6-Meter HO Loop Antennas. Requires only one cable down to the radio, ideal for dualband radios with integrated diplexer. New (other) Save 2 meter yagi antenna to get e-mail alerts and updates on your eBay Feed. 50. Comet SBB-15 Mobile Tri-Band VHF/UHF 6m/2m/70cm Antenna offers three bands of performance. 0 / 5. Stick Antenna for the “Ham Gentleman” Walk about freely with this pedestrian-portable antenna. Low profile, flexible, easy to set up Diamond antennas make great vertical antenna for 2m/70cm/6m, High gain antennas made from the best materials made to last and the market leader in ham radio antennas,We sell Diamond Anteenas at the best prices with large stocks and fast wotrldwide delivery. White fibreglass tri-band base antenna for 2m, 70cm and 6m. Maybe it’d be better to separate the 2 yagi’s onto 2 booms and use a duplexer to split the signal. 3 results for 2 meter mobile antenna Save 2 meter mobile antenna to get email alerts and updates on your eBay Feed. com JavaScript seems to be disabled in your browser. 5:1 from about 433MHZ to 450MHZ, with a minimum of 1. 2 to 1, turn off your radio and adjust the driven elements by loosening the hose clams and moving the elements toward each other. 2 db of forward gain. Buy Magnetic Mobile Antenna Ham Radio 2 Meter / 70 cm 140 to 150 I'll have to set it up on the vehicle and install a inline meter to see what the SWR is in 70cm 2 Meter 440 70cm Dual Band J Pole Antenna High Quality Ham Radio No Tuning Mast Mounting Bracket & Hardware Included. 4:1 or less throughout the entire 2 meter band. Be careful TXing on 70cm. The 2 meter wavelength sent to the antenna is longer than the 70 cm section of the antenna and it will not notice that place in the middle where 70 cm frequencies are cut off. 2 Meter and 60 cm Dual Band Dipole. I'm looking for a new mobile antenna. With twice the gain of a standard J-Pole antenna, the 2 meter Slim Jim antenna is a J-Pole on steroids! The Diamond Antenna SRH77CA / SRJ77CA / RH77CA is a dual band 2m/70cm ht antenna for portable handheld amateur two way radios. This antenna is similar in construction to the 2-meter OFC sleeve dipole I built over 8 years ago, but it is a simple center-fed dipole. This antenna also works great as a dual band antenna. What is the BEST 2 meter/440 antenna? Bonus is they'll act as a 3/4 wave on 70cm, so they make a good dual band antenna. Reviewed by Bob Allison, WB1GCMAssistant Laboratory Managerwb1gcm@arrl. 1/2" measuring tape is used and boom/element spacing is adjusted. On 70cm its about as sensitive on receive as a quarter wave ground plane. Available for 144 and 432 MHz. Parts Needed. You probably noticed that there's a stick protruding from the bottom of the PVC support. 500w 70cm Amplifier There are lots of different 2 meter low-power rigs in use out there, ranging from hand-helds for FM, older multi-mode transceivers, and even Build a 2-Meter Duplexer Walk up to any ham who has already put a repeater on the air and ask him, "What's the toughest technical problem you had with it?" He will probably say that obtaining sufficient signal isolation between the transmitter and receiver was the toughest. A J-Pole antenna is a half-wave vertical fed at its base through a shorted quarter-wave stub acting as a transformer matching section. Dualband 2/70cm Base Antenna Learn More. DESCRIPTION: This RG-6 cable balun with F connectors is used on on all current model 2 Meter antennas. com. 5 : 150 Easy to build ham radio dual band 2 meter and 70 centimeter ground plane antenna. VHF Three Element Yagi/Beam antennas can be purchased for 2 meter or 220 MHz amateur, MURS, Marine or Business Bands. 1 ozs. The antenna matched 1:1 through the slow scan TV segment of 440 but had SWRs in excess of 3 on the phone segments of the band. Alternatively, for permanent installations, the copper tube or aluminium J-pole is a good choice. 3 - 70cm operation lends itself well to urban settings, where the signals can "bounce" off nearby buildings and such; so, the higher angle of radiation of a 3/4 wave antenna on 70cm (1/4 wave on 2M) works just fine (eliminating the need to seek the lower angle of radiation of a 5/8 wave antenna for 70cm). 5 metres. Yes, you can operate simplex without a repeater on two-meters FM! And the audio usually sounds better than working through a machine. But how well do these perform? A close look at this familiar “make-shift” antenna may surprise you. I'd like the 70cm capability to leave room to grow and ideally, I'd rather not have a full height antenna, but I am a little open to the idea at least. With common connector for both bands or with separate connectors for 2 meter and 70 cm. Since satellite work is concentrated in the 145. Part# DR735T Antenna Impedance. Fiberglass, 2 sections. The Yagi has three forward lobes (according to the three current maxima in the 3/2-lambda-radiator) with 5,39dBd - 4,35dBd -5,39dBd gain. html VHF/UHF Beam Antennas. 8 dBi $42. the aluminum tee has only one set screw; combine dimensions a & b to make one tube. The Firestik 2-Meter antenna is an omni-directional antenna for the 144 to 148 MHz, 2 meter amateur band. build your own collinear antenna 900mhz. DBJ-1 DUAL Band VHF/UHF 2 meter/70cm ham base antenna - $36. A144S5R (Single) Support boom element for single antenna (optional) is required for one antenna operation. Tested up to 1000 watts SSB for a single loop. Please click Accept Cookies to continue to use the site. $139. From bouncing signals off of satellites, to working simplex two or three counties aways – you cannot go wrong with the Elk 2M/440L5! Manufacturer Tram Product Description 2M/70cm 5/8 Wave Antenna Frequency (MHz) 144-148 & 440-450 Product Narrative Base loaded Dual Band High gain antenna Usable Bandwidth 4/10 MHz Gain (dB) 3/6 Keep in mind that each 1/2 WL section adds approximately 2. notes 1. Dual-band 2M/70cm HT Antenna Super flexible and lightweight, made from the same material as unbreakable eyeglass frames If your desire is to increase the range and signal strength of your HT, this is the standard upgrade antenna for any HT with a BNC connector. 13 dB for the higher frequency. Since I like to tinker and build things I thought building an antenna would be a good idea. 3 cm. Stephen Dunifer. Version 2: With 8- and 10-mm-Elements (see down), built by SQ9VPA HTEK 2 Meter 7 element aluminum yagi. The N9TAX Slim Jim antenna is the highest quality roll up antenna available today. This well-designed black anodized antenna can handle less-than-perfect weather and highway speeds. amateur radio band. Can be mounted vertically or horizontally. My next project will be either a 2 meter band version of this or a 3 element beam of this 70cm band Quad antenna. V2L Vertical 80m-70cm : Comet: HVT-600 HF/VHF Mobile Antenna: VUG-270 2M/440 Thru-The-Glass Antenna: Mobile Mounts: Procomm: CD144M 2 Meter Magnet Mount Antennas: email received Oct. This listing is for a single loop only. SALE. The rules call for an omnidirectional horizontally-polarized transmitting antenna at a height of two to three meters above ground level. This means it will be relatively inefficient — just like the “rubber duck” antenna that would be supplied with your handheld. If you have used both 2 meters and 70 cm, you know that 70cm works better with a smaller antenna than 2 meters. 440 band is generally around 2. 59" aluminum antenna stock from MFJ. It works the 6 meter, 2 meter and 70 centimeter bands. The VHF/UHF Amateur Satellite Antenna Kit, UC-AMSAT-KIT is a discounted pair of compact Quadrifilar Helix Antennas, designed to operate through Amateur Radio OSCAR satellites, which is available and sold at antennas. 2 dB, a practically insignificant amount. These can 2 metre collinear antenna. now that I have a 440 radio again. You can either homebrew your own one (very easy and lots of designs available on the internet - just use Google) or buy a 2m/70cm antenna from any shop that sells amateur radio equipment. Trimming the top of the antenna resulted in a reduction of SWR at 144 MHz and 146 MHz to 2. The 4-El. S. Most people make these for 2m use, but you can make them for 70cm use if required. The diagram below shows the basic arrangement of the 2m Half-Wave version of the antenna. 34 July 1999 In a matter of a few hours, you caneasily build a broadband, 2-meter Yagi—complete with mounting hardware—for $20. Model # Band Stacked Element Phasing/ Wavelength Gain/dB Watts Connector Type Weight Lbs. 7 dBi Jetstream JTH-2 144/222/446 MHz Tri-Band Antenna $25. The fix was to turn it into a collinear with the addition of a 180 degree phased stub between the two half-wave sections For the 70CM design, elements consist of 4 x ½ wave sections, 1 x ¼ section and a ¼ whip mounted on top. 1 dBi 3. But this design yields excellent results compared to many other dual band antennas. Uploaded by. Home made ground p Although only a 70 CM antenna was described in this article, the formulas can be easily calculated for the 6 meter, 2 meter or 1¼ meter bands. Half-Wave Flower Pot Antenna. Simple j-pole antenna for 2 meter how to build a J-pole antenna for 2 meter band with many photos ecc. It can produce similar results to a commercial version and be made from scraps of coax. Looking for ideas as to what an acceptable 2 meter range mounted to a Jeep might be. I built the 2m antenna first and added the 70cm antenna later. One of the members commented to me that I should write an article about collinear arrays so that we could all build our own. By the way, the 2 meter 3 element Quad homebrew version is described here very nicely. 94, 154. The conduit radome provides a robust and sturdy enclosure for the antenna, and if required, it can be mounted outside in the weather. The 5 element Yagi has a Reflector 2M, Reflector 70cm, Driven Element, Open Sleeve, 70cm director (basically 2 elements on 2M and 3 elements on 70cm). Light weight, great for fixed, portable or indoor mounting. To weatherize the antenna, enclose it in ¾ inch schedule-200 PVC pipe with end caps. 2 meter 70cm antenna