Best 40 Meter Mobile Antenna

An isotropic antenna is an antenna that exist only in theory. org The … K6MYC on Antenna Testing. Need the best 40 meter antenna (space restricted) I've been hearing too much exotic dx on 40 meters lately in my mobile to let all of those DXCCs get away from me. Getting setup for mobile H. Volvo car radio stereo audio wiring diagram autoradio volvo s40 base 4 cyl 1 9l b t2 antenna volvo s40 v40 i fuse box diagrams schemes imgvehicle volvo s40 wiring. 10,12,15,17,20,30,40,75 and 80 Meters. Based purely on performance, I was going to give this antenna only a "3". This transportable antenna consists of a single-piece carbon fiber composite reflector. (Base in Minneapolis) or 40 meters in RACES/ARES common use LOWER the antenna under 10 feet; you will get a bit weaker signal. In this post, Peter shows you how to build a "pedestrian mobile magnetic loop for 40 to 10 meters. A better version can be created using longer pole segments to increase radiator length below the coil and retuning the coil. Twenty meters designates the length of the particular radio wave used to transmit and receive voice and Morse code. - Assembled in 20 minutes by two persons. MANY lightweight and portable designs! MFJ / Hy-Gain ; Comtek Systems-- Makers of Four Square phased array antenna systems. Typically this is the orientation for working FM mobile and repeaters. If you use an SWR meter or an analyzer at the base of the antenna you will get the most accurate readings in a timely fashion. There is little doubt that worldwide DX will become common on 50 MHz over the next four years. Diamond HF20CL Monoband Mobile Antenna Specifications: Bands: 20m Watts: 200 SSB, 70 FM Height: 86. ground plane antenna with radials. My antenna "farm" at the new QTH finally is taking shape. A seven foot long 40 meter whip, when resonated by a coil, will have a feedpoint resistance of about 2 ohms. WA2TAK's Compact 40-Meter Rotary Dipole This is WA2TAK's solution to the problem of installing a 40-meter rotary dipole on a small city lot. Get the best deal for 40 Meter Antenna from the largest online selection at eBay. However, there are several easy things you can do with your present antenna to initially get on the best amateur radio band… 160. HF Mobile Antennas. Twenty meters designates the length of the particular radio wave used to transmit and receive voice and Morse code. I usually give myself an extra foot on each leg nowadays. Build a DIY 2 Meter Vertical Antenna Next, I took the 3/4″ THD Dome Cap and drilled a 5/8″ hole through it. Note "PEAK" on FS Meter (Distance >6ft) Maximum radiation. Solve Virtually Any Restricted Space Problem - 40 Meter Isotron only 22 inches x 16 inches x 15 inches!. Requires an Optional 3/8-24 threaded mount and Coaxial Cable. Sales, Supplies, and Service. The K-40 would work well for you. 30 shipping; Watch MFJ-1640T 40 Meter Hamstick. Radials: 34. Murray, KD1BL Author's Note: This article describes a 75/40 meter NVIS, but one could use the construction techniques to build just a 75. The AV-640 uses quarter wave stubs on 6, 10, 12, and 17 meters and efficient end loading coil and capacity hats on 15, 20, 30, 40 meters. This high performance heavy duty 6 meter antenna was specifically designed to handle the demanding requirements for repeater use. Antenna Rotators; Hustler RM-40 40 Meter Resonator Power Rating 400 Watts Approximate Bandwidth 2:1 SWR or Better: 40 - 50. 10 Meter 117. A standard SO-239 UHF connector is provided on the Outdoor Shortwave Antenna for this purpose. 8 dB lower – Much less SWR bandwidth – Greater feedline loss away from resonance Build or Buy a Short Dipole? • Designing a Shortened Antenna CT1EOJ QST Oct 2003 • Model. There's a bit of detail on how I mounted it on my mobile rig page. All antennas are already pre-tuned. We stock a range of dual band, 70cm, 2m & 10 meter ham radios antennas. At VHF and UHF, portable antennas are very small, light, and easy to pack and carry. The hanger also stabilizes the antenna so it does not sway in light wind. Building an amateur radio antenna for 160 meters is a challenge. All information, images, and documents on this website are the sole property of MFJ Enterprises, Inc. Much taller than the average Ham mobile antenna, this tree branch snapper tops out at 17 feet, 10 inches above the road. This is in the same range, it’s just another foot longer than the 33-foot length. RE: Best 40 Meter DX Antenna For My Lot « Reply #12 on: August 30, 2014, 01:54:38 PM » For a vertical, try this: Run a non-conductive length of UV-resistant rope between two convenient trees, each at least 35 feet high (the lowest point of the catenary should not be less than 35 feet high). On VHF, I use a roof-rack-mounted 5/8-λ commercial mobile antenna that retails for $14. use the jetstream data sheet provided. 4ft black fiberglass with 4ft stainless steel whip. measured about 100 kHz, the 40-meter at 40 kHz and the 75-meter about 20 kHz. › 20 meter band hf antennas The 20-meter or 14-MHz amateur radio band is a portion of the shortwave radio spectrum, comprising frequencies stretching from 14. A non-directional antenna should be used in a mobile installation; a vertical whip is best suited for this. Putting up the antenna is simple: the top section is secured with a wing nut then the vertical is walked up hand-over-hand into the upright position and locked in place with the pin. W6CAW "Fixed" Mobile 160 Meter Whip. Shop with confidence. It is designed as a highly portable wire antenna, easily set up as an inverted V, horizontal, sloper, or in the case of higher frequencies, a vertical […]. The AV-640 uses quarter wave stubs on 6, 10, 12, and 17 meters and efficient end loading coil and capacity hats on 15, 20, 30, 40 meters. - Portable Vertical Antenna for 75m and 40m makes up a compact 28 feet high antenna. For best results take the time to do this correctly as the antenna and antenna matching unit will be operating at peak efficiency when correctly tuned. On 40 meters, the AS-2259/GR, with it’s 15’ mounting height, is. net) This 40-10 meter portable antenna uses switches to disconnect sections of the antenna for 20-10 meter operation, and clip-on inductors to extend operation to 30- and 40-meters. The antenna was created for the 40 meter band and above. The whip on top of the coil is six feet long for a total antenna length of twelve feet which includes the coil form that is 1 foot long. Full size antennas are a bit awkward at 75 meters. Gray = 8 for 80 meters, Blue = 6 for 60 meters, Yellow = 4 for 40 meters. The short version: any band below 10 meters requires an antenna too long to mount on a vehicle. The "Higher Q" makes this coil the best choice for 40 and 75 meter operation. Choose from top-brand HF Yagi, HEXX beam, and other rotatable antennas to meet your high-frequency needs. Make full use of your sunspot cycle with the Patriots low angle signal. The antenna itself is 3. This month I decided to build a 2 meter 5/4 wave antenna. Above we see the pattern produced by a 5/8 wave antenna with a length just under 7 meters. Antenna gain is measured in either dBi or dBd. The take-off angle will not be any lower and the longer antenna brings along more lobs in the antenna pattern which are divided many times so they tend to be weaker. Addition of Gizmotchy Power Boosters to your Gizmotchy 10/11 Meter Antenna adds. Background. PETE N6HH with his 18 wheeler and 20 year old Hi-Q -5 mobile antenna with 2,590,000 miles on the antenna. Fast world wide shipping on the latest top Cb radios and 10 meter radios. Manufacturers of High Quality Amateur Radio / Ham Radio HF Yagi, Transmitting and Receiving Antennas. Specifically, I was hoping that my homebrew antenna tuner would improve my signal to noise ratio on the aforementioned bands. Browse your favorite brands affordable prices free shipping on many items. A portable vertical antenna for 10 to 40 meters, designed for mobile operations can be used in a car as seen in pictures. The 10-40 meter high performance groundplane freestanding vertical antenna is a rugged multiband vertical antenna. DX on 40 meters is best when the local sun is down and this makes it convenient to use the cover of darkness to hide the size of a quarter-wave antenna. 300 MHz in ITU Region-2, and 7. First, we should note the difference between antennas, masts and towers. On 40 meters, the AS-2259/GR, with it’s 15’ mounting height, is. Well the only way I've been able to achieve that was. The beauty about the 7 strand wire is it doesn't knot or tangle unless you deliberately try and is corrosion resistant. 6" Diamond Antenna HF20CL GigaParts. By John Portune W6NBC. This way, the antenna can simply be stuck onto the top of the mast. What is an excellent vertical radio antenna for the 10 to 40 meter ham bands? Looking for a vertical omni-directional antenna that perform decently well on the 10 to 40 meter amateur bands (i. There are many things to adjust and try. ARRL Product Review of the M2 6-Meter HO Loop Antennas. The antenna is designed to be fed with 50 or 75 Ohm Coax Cable of most any length with a Balun. Overall, I find that a horizontal antenna (dipole) is less noisy than a vertical. For Indoor or Outside field use. Spec sheet, Manual. " This may be the best portable HF antenna available for SOTA (Summits On The Air), emergency, or other field work. Since the 2:1 SWR bandwidth of the antenna is wide the adjustment parameters are relatively broad and fine adjustment is not usually necessary. Several late-night contacts have been made over distances exceeding 3000 miles on 80 meters. Contact one of your local Diamond ® Dealers for current price & availability. New Home of the Force 12 Antennas. Sales, Supplies, and Service. Simply order, mount, and ride! Includes : • Antenna. The net result is the antenna's low base impedance essentially remains un-changed to the coaxial transmission line on 40 meters. An on-the-air comparison was made between the portable whip dipoles up 20 feet and half-wave dipoles for 40 and 75 meters. You'll also see this referred to as the DK3 antenna or the W6AAQ. Called the Outbacker in honor of its Australian origins, this rugged yet attractive antenna soon began to show up on the bands and to receive soma nice reviews in amateur radio publications. KW or RP series). This is due to basic accuracy of the instrument in question (≈±5%). Dimension "A" is the height of the antenna from the base to the apex, not the length of each of the vertical wires. 40m mobile antenna - A mobile vertical antenna for 40 meters band by W4NFR [ Hits: 1465 | Votes: 2 | Rating: 7 ] 40m Quagi Beam - A 7 MHz wire antenna that is a mix of a Quad and a Yagi design. 160 meters is another story altogether. However, a $22. Mobile to Base Comms, Best Freq. ó , kdyh kdg \rxu pxowledqg hqg ihg dqwhqqd lqvwdoohg khuh lq 6lqjdsruh iru d ihz zhhnv qrz dqg dp yhu\ sohdvhg , xvhg wkh zluh iurp p\ suhylrxv dqwhqqd zklfk lv ihhw orqj ,w zrunv ehdxwlixoo\ , kdyh lw. I have had best luck with the counterpoise wire about 2 foot above ground on each end and the length at 1/4 wavelength. 5-Band, 1/2 wave rotatable dipole for 40/20/15/10/6 meters This is the compact dipole used for HF communications on the set of the ABC Television show "Last Man Standing" with Tim Allen. It comes with a hinged based, and is also walked up into position. 6:1 or better VSWR. My antenna "farm" at the new QTH finally is taking shape. Propagation-wise it more closely resembles the 40 meter band. A ground-plane antenna provides greater coverage and is recommended for fixed station-to-mobile operation. The short version: any band below 10 meters requires an antenna too long to mount on a vehicle. The two photos depict a 40 meter resonant antenna before (left), and after (right) proper matching. The MFJ-1622 Apartment Antenna covers 40 through 2 Meters, mounts outdoor to windows, balconies, railings, and works great indoors mounted to desks, tables, and bookshelves! This Apartment Antenna lets you operate 40 through 10 Meters on HF and 6 and 2 Meters on VHF with a single antenna!. This strap is used for operation on the 10, 12, and 15 Meter bands. ADJUST ANTENNA LENGTH to move "PEAK" to desired operating frequency. ground plane antenna with radials. " This may be the best portable HF antenna available for SOTA (Summits On The Air), emergency, or other field work. We tested the. Your article was one of the best that I have found on the internet, short, sweet and right to the point and answered all my questions about a 40 meter dipole without reading a novel!! My antenna will be about 50 feet from the entry to my house and therefore will run underground via sched 40 3″ pipe to allow for future wires. If you have a mobile antenna that includes 160, then you could use a relay or some other method to switch between a tap that works for 160 and a tap that works for 80/40. 5-Band, 1/2 wave rotatable dipole for 40/20/15/10/6 meters This is the compact dipole used for HF communications on the set of the ABC Television show “Last Man Standing” with Tim Allen. 66 in total. While a 160 meter antenna won’t fit in your attic, one for 20 meters or even 40 meters will, often surprisingly well. A friend load me his MFJ 989C antenna tuner. The reason being, the antenna is too long and the tunable tip cannot adjust down far enough (see line 40). This antenna measurement can be used for either a vertical antenna for 20 meters or a horizontal antenna for 20 meters. ADJUST ANTENNA LENGTH to move "PEAK" to desired operating frequency. Maximum-Gain Radial Ground Systems for Vertical Antennas Al Christman, K3LC Table I Optimum number and length of radials for a vertical antenna on 40 meters (7. This antenna is very similar to Stealth Telecom's automatic HF antenna. Field day 40 on the cheap. MANY lightweight and portable designs! MFJ / Hy-Gain ; Comtek Systems-- Makers of Four Square phased array antenna systems. Masts are usually metal, but under unusual circumstances they might be made of wood or other substances. performs well, but is “a cloud burner,” good for local contacts within 500 miles. HF Mobile Installation Tips Diamond ® Antennas are sold through authorized dealers. This is the 'Jones version' of the Lawn Chair 6M Halo as viewed through the rear window of the mobile. A detailed look at how one can relatively optimize the Q of a loading coil. I highly doubt if your antenna is 40' high. You can also choose from paid samples, free samples. This is the 'Jones version' of the Lawn Chair 6M Halo as viewed through the rear window of the mobile. This will allow you to tune then transmit and receive on 6-40 meters while driving down the highway or parked in your favorite spot for HF operations. It is good for medium range contacts. For security, your IP is recorded as: 207. Stryker 10 Meter Radio SR-655HPC This Radio is our Top Seller of all 10 Meter Radios I t i s a Top Seller BECAUSE it meets the demands of the most diehard 10-meter radio operator, it has a transceiver that pumps out that loud audio, it is the best cost to feature value on the market and it holds up to the rigors of the road!. Big signal in a small package. › 20 meter band hf antennas The 20-meter or 14-MHz amateur radio band is a portion of the shortwave radio spectrum, comprising frequencies stretching from 14. Some CB radios will have a built-in SWR meter. Several late-night contacts have been made over distances exceeding 3000 miles on 80 meters. Does anyone know what the best (smallest) antenna for the 40 meter band is? I want to be able to listen in on morse code transmissions (I am NOT licensed), but I don't have much room for an antenna. MFJ-1722/1722S 2M/440 Antenna: Mobile Mounts: MP Antenna: Super-M Classic Mobile Mobile Antenna 25-1300 MHz: Super-M Ultra Mobile Mobile Antenna 25-6000 MHz: Opek: HVT-400B HF/VHF Mobile Antenna: HVT-600 HF/VHF Mobile Antenna: VUG-144 2M Thru-The-Glass Antenna: VUG-270 2M/440 Thru-The-Glass Antenna: Mobile Mounts: Procomm: CD144M 2 Meter Magnet. The bread and butter antenna is a dipole at about 30'. Solid one inch fiberglass trap forms for optimum electrical and mechanical stability. 3:1 and good efficiency. Bands cover 80m-40m-30m-20m-17m-15m-12m-10 meters, including WARC bands. You can scale this antenna for 160 meters or 75/80 meters but NVIS will not work above 40 meters. Using a MFJ antenna analyzer is the best of all worlds. 100 MHz is exclusively allocated to amateur radio worldwide. Our mobile antenna uses NMO Mount input and is rated for 200 Watts input. You can also choose from paid samples, free samples. I have been using the antenna without the cover as a test antenna next to the bench but it's time to get it up on the roofline for some actual use. City dwellers sometimes find it difficult or impossible to erect full-size antennas for the lower ham bands, so there is considerable interest in more compact alternatives. The short version: any band below 10 meters requires an antenna too long to mount on a vehicle. The best way to avoid being fooled is to measure the vertical antenna element. In FM broadcast, the antenna is usually mounted to the mast near the top. Some models of remotely controlled HF mobile antennas, are available with 160 meter coverage. Quarter Wavelength Vertical Antenna 7 9. Before you go, you might want to check out my articles on the best outdoor antenna or the best electric cooler. Build this Novice 4 band vertical Home made vertical antenna for 80 40 15 10 meters ARRL PDF file taken from QST June. "I talked to Jerry, K5AXN on the air while he was using his NVIS antenna with reflectors on 40 meters. 30 Meter 105. The Antenna Farm : 2 Meter High Gain Antennas - VHF & UHF Mobile Radios Radio Accessories VHF & UHF Hand Held Radios Antennas Mobile Antenna Mounts SWR/Power Meters Adapters Coaxial Cable Two Way Accessories Antenna Accessories DC Power Supplies Coax Cable Accessories Amplifiers Connectors Aviation Radios Repeater Systems Towers & Accessories Scanners & Receivers Duplexers Diplexers. If there is little, or no ground system, then the antenna will vary in load and effectiveness, or may not work at all! Design of a 20 Meter Top Loaded Vertical. Helically wound 40m vertical. Band-to-band tuning is also faster. 42 meters or 11 feet 2 inches long from the top of the mounting spring to the tip. You can scale this antenna for 160 meters or 75/80 meters but NVIS will not work above 40 meters. That means that they will NOT get any of the 40 CB Channels out of the box. an NVIS antenna. This is an End-Fed Half-Wave (EFHW*) antenna for 80/40/30/20/17/15/12 and 10m bands. net) This 40-10 meter portable antenna uses switches to disconnect sections of the antenna for 20-10 meter operation, and clip-on inductors to extend operation to 30- and 40-meters. ) Good success was seen with a MFJ 1988T portable telescoping antenna. The shunt capacitor (C1) reactance on 40 meters is roughly ten times that of the antenna's base (feed-point) impedance and therefore has a negligible effect on match-ing. HF Mobile Installation Tips Diamond ® Antennas are sold through authorized dealers. Stealth Telecom no longer list this antenna so Icom may have bought the rights to it. 1 mHz), and a few at 38, and a few at 30 feet. Hustlermanufactures and sells more HF mobile antennas world wide than anyone. Any reuse or redistribution of the contents of this website are strictly forbidden without authorization from MFJ Enterprises, Inc. For example, the signal radiating from a 1/4 wave antenna is directed more vertically, thus making it ideal in urban. For security, your IP is recorded as: 207. 40m mobile antenna - A mobile vertical antenna for 40 meters band by W4NFR [ Hits: 1465 | Votes: 2 | Rating: 7 ] 40m Quagi Beam - A 7 MHz wire antenna that is a mix of a Quad and a Yagi design. One separate dipole for each band. Requires Suitable Optional mount & cable. I glued a 40-to-32 mm PVC adapter piece to the bottom end of the coil core. 5' Length: 5 to 7 miles. 100 MHz is exclusively allocated to amateur radio worldwide. This usually shows up as high SWR across the band. This antenna is unique in that it is enclosed entirely in 3/4" PVC which makes the design a little more complicated. Twenty meters designates the length of the particular radio wave used to transmit and receive voice and Morse code. So I have tried a couple different portable QRP antennas, in my search for the best QRP antenna. Up to 100 kHz. Also, our RACES Room at the County EOC has 160 Meter capabilities. 6 to 4 MHz you can use a few algebraic formulas to compute antenna sizes. 4 1/2 foot long, 3/8 inch diameter fiberglass/copper conductor with 3/8x24 male and female mounts on ends. APPLY SIGNAL SOURCE (Low PWR Tx)Sweep across required Band. The next generation in Design and manufacturing. MP1B forms the basic core antenna of the various MP1x series Super Antennas. To optimize the antenna for a frequency RANGE, do the calculations twice, once for the low end of the range and once for the high end; then average the two and plan to adjust the VSWR on both ends of the range. After the trap there is about 10 meters of wire making one side of the antenna 30 meters long. This piece was originally written a few years back to assist my fellow NJ Army. Swallow-Tail Antenna 5 5. Buy amateur radio mobile antennas from our ham aerial range at thunderpole. A modified version for 20 and 40 meters is described too. : 7 to 30 Mhz) without being too terribly tall or requiring guy wires. An inverted vee with a 40-foot (12 m) apex elevation requires only 115 feet (35 m). Most Popular. 1dBi, center-load 5/8 wave, VSWR: 1. "I talked to Jerry, K5AXN on the air while he was using his NVIS antenna with reflectors on 40 meters. 2 DB of gain. The VE2DPE 160 Special!. A Simple 40 Meter Vertical for Field Day. There are many things to adjust and try. I finally got the PVC cover on the 40 meter helically-wound antenna I started back in April. 80 Meter COUNTRIES: 87. Requires Suitable Optional mount & cable. The antenna presented here covers all ham bands from 40 to 10 meters, and everything in between, with a maximum SWR of no more than 1. The group of guys I normally talk to on 2 meter simplex have moved to 6 meter simplex since we started messing around with APRS. Modeling this 160 meter inverted-L in EZNEC shows surprisingly useful patterns and gain on most HF bands above 160. I highly doubt if your antenna is 40' high. › See more product details. I didn't even bother to measure it but just loosely wrapped about 6" from each end around itself. NOTE: The signal polarity is perpendicular to the axis of the feedline. This is an End-Fed Half-Wave (EFHW*) antenna for 80/40/30/20/17/15/12 and 10m bands. A mast or tower is simply the thing that holds the antenna up off the ground. To support an antenna, I have no tower, and only two trees that aren’t too close to a house. MIRAGE’s most popular amplifier gives you 160 Watts of output power for just 25 W in from your base/mobile rig! The B-2518-G is ideal for your 20 to 60 Watt 2 Meter mobile or base station. the best performing base antenna I, and others have found. Since Valor went under I don't know of anyone who makes a 160 Meter "hamstick" style of antenna so, I made one. 40 Meter HF antenna with 3 / 8 inch base, works with most standard CB mounts. But you cannot break the laws of physics. My current. Inverted-Vee Antenna 10 15. I ended up buying the MFJ-2340T HF Mobile Whip Antenna and a jaw mount. It is assumed, without knowing, this rise in SWR is attributable to the antenna's proximity to the roof and the metal gutters surrounding it, and its proximity to a nearby 50 foot galvanized steel push-up mast which holds three other antennas, viz. This is in the same range, it’s just another foot longer than the 33-foot length. What is an excellent vertical radio antenna for the 10 to 40 meter ham bands? Looking for a vertical omni-directional antenna that perform decently well on the 10 to 40 meter amateur bands (i. K5LAD's Assorted Ham Stuff "I can’t work 80 meters, I don’t have a good 80 meter antenna" How many hams have made a statement like the title of this piece? Quite a few, I’d be willing to bet. To optimize the antenna for a frequency RANGE, do the calculations twice, once for the low end of the range and once for the high end; then average the two and plan to adjust the VSWR on both ends of the range. But then, that is the fun of it. Get a strong, clear signal with less noise from 2 meters through 40 meters with your choice of single- and multi-band Yagi antennas with up to 16 elements. Has a built in tuner that allows you to easily match the antenna for transmit and receive from 7 to 29. Dimension "A" is the height of the antenna from the base to the apex, not the length of each of the vertical wires. The best way to avoid being fooled is to measure the vertical antenna element. 100 MHz is exclusively allocated to amateur radio worldwide. All sections 1. I wanted high efficiency 40 Meter antenna with low-angle radiation. on 75/80 meters. I started out with a 5/32″ drill as a pilot hole, then finished off with a 5/8″ speedbor spade bit. Magnetic Loops. This strap is used for operation on the 10, 12, and 15 Meter bands. Galaxy's 10 Meter Radios are NOT CB radios. In the drawing above, it is shown for just four bands, 80 thru 10. antenna may not be a "bolt on and use it" installation as is with two meters or even 10 and I I meters. 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. Many RASON members truly enjoyed last month's collinear antenna. I have found the Diamond NR22L antenna that boasts 6. Diamond ® Antennas are sold through authorized dealers. Six Meter Rigid Dipole 6 METER Half-Wave Dipole Antenna …. Today was a good antenna day. But you cannot break the laws of physics. The Wilson series antenni can. Masts are usually metal, but under unusual circumstances they might be made of wood or other substances. Modeling this 160 meter inverted-L in EZNEC shows surprisingly useful patterns and gain on most HF bands above 160. Find many options of HF, mobile, and base antennas at Walcott Radio. 2' Length: 2 to 3 miles. Related Products MFJ-1610T 10 Meter Mobile HF HamStick Antenna with 3/8-24 Connector $19. Get the best deal for 40 Meter Antenna from the largest online selection at eBay. I wanted high efficiency 40 Meter antenna with low-angle radiation. The crowded space above the set required a compact multi-band dipole, and the CHV-5X was selected to solve the problem the minimal space presented. You can connect AT the antenna base and tune the antenna perfectly. This antenna is unique in that it is enclosed entirely in 3/4" PVC which makes the design a little more complicated. For the last 35 years or so I have been a 40 meter CW specialist for Field Day. The counterpoise wire is an important part of tuning the antenna. 175 wavelength (7 meters, ~21. It’s a sturdy piece of equipment designed to withstand even some powerful winds. 4ft black fiberglass with 4ft stainless steel whip. So for 40 meters (say 7. Radiation Pattern of a Horizontal Buddipole™ on 7. There are numerous reasons why people shy away from trying to put up a good antenna for this band:. 40-10 Meter Portable dipole Phil Salas - AD5X ([email protected] Anyone have any experience with this antenna or know of a better one? I do not care how long it is. The antenna itself is 3. First time mobile operators should not become discouraged because their new H. A modified version for 20 and 40 meters is described too. Additionally, any antennas mounted below. 00! Wow! These guys are making some good markup! Features of the K0WA 40 meter verticle. 15 MHz) operating over average soil (conductivity = 0. I have an MFJ 902 6 through 80 meter antenna tuner. A Broadband 80/160 Meter Dipole An easy to build single wire antenna for 160 and 80 meters with a better than 2 to 1 swr across the 80 meter band. The 4-can version provides 50 dB rejection and 1 dB insertion loss at 5 MHz spacing, and the 6-can version provides 75 dB and 1. The antenna itself is 3. The basic formula for a half wave dipole is: L (length in feet) = 492/f (frequency in Mhz (1,000,000 Hz) Divide this by 2 for a quarter wave antenna. I've collected the parts but haven't assembled it yet. On the air experience demonstrated that on 40 meters and above, this antenna system worked as well as to slightly better than a typical mobile antenna (we used the shorter Palomar AN-7, an Outbacker clone—see page 78—and a Comet CA-HV for compari-son) mounted on a vehicle. This is in the same range, it's just another foot longer than the 33-foot length. This means that mobile hf antennas all operate at negative gain, with worse performance the lower the band. The best is what ever you can get away with! I have taken a closet pole out for a center mast and run the antenna wily nilly up down , back and forth and it works with some kind of cheap tuner! Open wire feeders OF COURSE! 450 ohm is best, but 300 ohm will surely work and at qrp levels even RG-174U in a pinch. Based purely on performance, I was going to give this antenna only a "3". About 4% of these are walkie talkie, 1% are antennas for communications, and 1% are wireless networking equipment. Working "out of the box" with SWR full band lower then 1:1. For best results take the time to do this correctly as the antenna and antenna matching unit will be operating at peak efficiency when correctly tuned. 22 foot jumper from the radio to the antenna, and a 71. •20 meters and above or 80 meters and Best to tune-up on a vehicle TV antenna 20 mtr 40 mtr 80 mtr. Once I bought the radio, I needed to figure out what I was going to do for an antenna. " A VHF/UHF 3 and Mobile Antenna," QST. Mobile Operation Hints & Kinks Mobile HF Antenna Efficiency 8-Foot Base-Loaded 40 Meter Antenna, Coil Q = 300 It is BEST to use a resonant antenna. Here, you'll find links for high gain antennas covering vhf-uhf. That is usually. Any reuse or redistribution of the contents of this website are strictly forbidden without authorization from MFJ Enterprises, Inc. 1A Charging Socket, Weather, Frequency Display, 12 Volt, Black with Brushed Aluminum Face Finish, AM/PA, 40 Channel, Mobile CB. Cut antenna wires to length plus a little Fit one end of each wire with solder lugs Fit the other with the egg insulators Install wires to SO-239 using brass nuts and washers {as shown in the figure} Erect antenna (2 men ~ 5 minutes) Tune antenna match for minimum VSWR (also could adjust mast height and wire lengths). If my antenna is 65 feet away from my radio, I need a 14. A 2:1 SWR can be handled by most radios. Additionally, any antennas mounted below. The 40 meter Stealth Vertical. It is a manually tunable antenna. Find many great new & used options and get the best deals for 40 Meter Heavy Duty Amateur Radio Dipole Antenna - ONE YEAR FREE REPLACEMENT! at the best online prices at eBay!. 25" heavy wall, high strength aluminum. Still trying to get the 80 meters section to resonate in a portion of the cw/sbb. After the trap there is about 10 meters of wire making one side of the antenna 30 meters long. The Outbacker All-Band HF Mobile Antenna. Fast world wide shipping on the latest top Cb radios and 10 meter radios. A vertical seemed the obvious answer, a naturally low-angle radiator. 6 to 4 MHz Good 75 meters antennas are easy to build with nothing more than readily available materials.