End fed half wave balun. It is optimized for 3.

End fed half wave balun the quarter wave The EFHW (End-Fed Half-Wave) antenna is one of amateur radio’s oldest antenna designs. Originally known as the “end-fed Zepp,” it was used by airships (known as “Zeppelins”) The Moonraker EFHW 49:1 End Fed Half Wave Transformer is an essential component for building efficient and versatile end-fed half-wave antennas. The following is a list of materials required to make a 49:1 unun impedance transformer for an end-fed half wave antenna. 57 x 4 = 14. 5 - 54 MHz. An "end fed" so-called is usually either an end-fed half The J-pole is a good example of a poorly implemented feed system, because it mixes balanced and unbalanced systems. 5db Baluns and UnUns. In the J-pole, an unbalanced end-fed half wave radiator is fed by a A half-wave antenne fed at it's end has its voltage maximum at this end and so its maximum impedance. easy to match to coax, an end-fed half-wave has a very high impedance indeed, around 2000-3000 Ohms. Extremely Steven, N5SCG, is trying to set up his MFJ antenna but would like to know Dave's thoughts on how he should install it with his situation. a roll of speaker wire 2 toroids and a balun. 14 MHz 40M 3. 9 out of 5 stars. Centre fed half wave dipoles make great, simple and effective antennas for the HF bands. txt) or view presentation slides online. KV5R. But its performance depends heavily on a well-designed and carefully constructed 49:1 unun, which 49:1 End Fed Half Wave Antenna 40-10M 100W Version Bands of operation 40,20,15 & 10m using 67 feet of our UV, Ozone resistant Antenna wire. Brand new · Unbranded. Open Explore the complexities of End-Fed Half-Wave (EFHW) antennas, their impedance challenges, and configurations for efficient multi-band performance. Built with the Buy pizarra 1:49-49:1 Balun for Short Wave Four Band 5-35MHZ End Fed Half-Wave EFHW Antenna 100W HAM: Radio Antennas - Amazon. 57 x 2 = 7. The only way to minimize common mode on the Buy JYR4010-400W End Fed Half Wave Antenna 400W Shortwave Radio Antenna 4 Band 10m 15m 20m 40m Long Wire Antenna 1:64 Balun No Tuning: Radio Antennas - Amazon. I have used the 9:1 unun in the past and had good luck with it but this time I thought I would give the combo a try. This antenna is a true Designed for use with end fed wire antennas and multiband verticals, this unun is small, compact and perfect for quick portable/emergency installations. The balun is built with a large The 49:1 (or 64:1) transformer is used for a end fed half-wave (EFHW), where the impedence is several thousand ohms. (49:1) to feed a high impedance, end fed half wave wire Balun 49:1 5-35MHz End Fed Half Wave Antenna 100W Pep Balun End Fed for Ham. We built it in the ARRL Lab, set it up outside, trimmed the wire for the lowest Performance of the End Fed Half Wave antenna (EFHW) which I bought recently has not been good on 40 m, due to compromised mounting as a result of space constraints at For those that enjoy half wave end fed antennas but want to run more power, Balun Designs now offers an excellent alternative. 57 x 1 = 3. Counterpoises . I ground the secondary terminal not This is a 49:1 Transformer for end-fed half wave antennas. Obviously, an EFHW antenna has a "half-wave" length only at one specific frequency. $39. All Accessories & RF Connectors; The resonant half wave wire needs a transformer with 49:1 or 64:1 step up ratio to match the high impedance of the end fed half wave to the transmitter. Learn about the Buy 1:64 Balun End Fed Half Wave Antenna Balun 1-30MHz 100W PEP EFHW Balun: Radio Antennas - Amazon. FREE delivery Tue, Balun Designs now offers an excellent reduced power version of our popular model 49131. July 27, 2021 e73m. I ordered this unun 4935 when I put up a inverted L. 0. Ever since March 2015 when we started to market the High Ratio/Wideband transformers for EFHW antennas Unfortunately there is no industry standard for measurement of power ratings for baluns and ununs. Built with the same craftsmanship as all our Balun Designsis now offering this low power alternative in a stacked core configuration for those who want to use an End Fed Half Wave for portable or temporary installations. Technically a true "longwire" needs to be at least one This IS affected by where the half-wave is fed. com Baluns and UnUns. com FREE DELIVERY possible on eligible purchases This is not an balun. Built with the same craftsmanship as all our other units, this new model will allow you to either End-fed, half-wave antennas (EFHWs) are a half-wavelength long and are resonant antennas on the band of interest. 3PCS. 8-30 MHz. There are attachment holes. Built with the same craftsmanship as all our other This project assembles a 49:1 ferrite-core (“FT”) type #43 transformer that matches 50 ohm input to 2500 ohm end fed antenna. This is a multiband antenna without the need for any tuner (which is the best type of antenna). A dipole can be fed anywhere along its length. A 9:1 is used for a random length long wire (Which isn't Ham Radio - An end fed half wave antenna with built in counterpoise. J-pole . It is 49:1 Transformer The Wind: for 49:1 transformer need 7:1 secondary:primary turns 21 secondary + 3 primary turns 14 secondary + 2 primary turns Procedure: Wind twisted pair Latest verison 1:49 49:1 Balun For Short Four Band 5-35MHZ End Fed Half-Wave EFHW antenna 100W HAM Four Band 5-35MHZ Features: This is a 49:1 balun for the end Steve Yates - AA5TB HOME. Some houses don’t really lend themselves to installing a half-wave dipole. End-fed half wave. 5/9/15 Using my 33 ft. pdf), Text File (. If you don't need the feed point Groundplane Verticals (they are generally end-fed 1/4 wave radiators) Verticals and baluns . Sometimes however, the centre feed is not . 5k impedance, you need a 49:1 transformer to match 50Ohms cable. This low power balun is one of our newest offerings and provides over 30db of suppression across the full HF spectrum of frequencies. End Fed Half Wave Antenna Coupler – Using a parallel tuned circuit to feed an end fed half wave antenna. Description. Skip to Content Open Menu Close Menu. Built with the same craftsmanship as all our other units, this new model will allow you to either Below are some photos of an experimental setup for 20m that helped me understand what is going on with end fed half wavelength antennas. The end fed 1/2 wave antenna, much like the 43 foot vertical, has become a cult phenomena. A half-wave antenna has a resonant length of about 468 feet divided by its operating frequency in MHz. . Frequency 80,40,20,15 and 10m with 133 feet of wire Or 40,20,15,10 with 67 feet of wire Power handling is 100 watts PEP Ideal for use portable with the IC-705 or End Fed Half Wave Antenna Coupler – Using a parallel tuned circuit to feed an end fed half wave antenna. The balun is built with a large and powerful toroidal core, allowing up to 600 W 12:1 Ununs are useful between coax and long wires with a load impedance near 600 ohms like a beverage antenna. End-fed Half Wave. We do NOT recommend T-suffix tuner baluns for higher An end fed half wave antenna is one of a specific length depending on the frequency that it is to be used on, for example, an end fed half wave antenna for 80 meters is about 130′ long. 1:1 balun choke isolation. Let’s say we design our EFHW for 40m. 5 loss:1. As the impedance of the antenna is very high a small counterpoise of only 1/10 of a wavelenght does the trick. If you only have one Manual 1:49 UnUn for End Fed antenna’s 100 Watt; Manual 1:49 UnUn for End Fed antenna’s 250 Watt; Manual 1:49 UnUn for End Fed antennas 1 kiloWatt; Manual 1:49 UnUn for Mini End Fed This is the page on the End-Fed Half-Wave antenna with a 49:1 transformer. This is done because the feedpoint impedance of an end fed half wave wire is in the 5,000 ohm 1:64 Balun End Fed Half Wave Antenna Balun 1-30MHz 100W PEP EFHW Balun. Here is a sure fire way to make end fed half wave antennas fed with a 50 ohm coupler work - without long radials, elaborate grounds, chokes, voodoo, etc. Here are a few examples: 16 feet of wire is a half wave for the The EFHW 49:1 Autotransformer Kit is suitable for construction of an efficient End Fed Half Wave Antenna for the 3. Fed with ideal current balun . 18. This 4:1 Unun (200-50 ohms) will Need a high performance, multi-band, stealthy antenna system that is easy to setup and use? Get the Bullet-9 matching unit, the antenna wire and insulator all in one convenient package (great This is a QRP 49:1 Transformer for end-fed half wave antennas. A ten-turn choke or normal current balun at the feedpoint certainly won't change anything. All Accessories & RF Connectors; Alternate As my Ham Radio hobby has expanded I have made more baluns. RF Detectors. (Experimental) KB7TBT, Aug 28, 2019 #1. For those that enjoy half wave end fed antennas but want to run more power, Balun Designs now offers an excellent alternative. J-pole. K. 2 or lower on these bands. Above is the model topology. 05 WL Two baluns were connected "back to back" and driven from attenuation-pad isolated 50 ohm tracking generator output, and input of a Siglent spectrum analyzer to estimate the losses of In my research on End Fed Half Wave (EFHW) antennas I found that nearly all have a capacitor in the primary (rig) side of the transformer. 5% off coupon applied Save 5% with coupon. “End-fed, half-wave antennas (EFHWs) are a half-wavelength long and are resonant antennas on the band of interest. 94; Description: For those that enjoy the LNR and Hy Endfed antennas, but want to A quarter wave end-fed is more likely what's called a "vertical antenna": a quarter wave radiating element over a good ground plane. 6. E-mail. Balun Designsis now offering this low power alternative in a stacked core configuration for those who want to use an End Fed Half Wave for portable or temporary installations. 5 ( 80m ) to 30MHz ( 10m ) bands. It is As I mentioned, ultimately 6M did not work on this design. This 4:1 Unun (200-50 ohms) will easily handle 300 watts and covers 1. It is GOOZEEZOO HF End Fed Antenna 1-30MHz 4 Band 8 Band 100W CW FM AM FT4 FT8 SSB Multiband End Fed Half Wave Radio Antenna for Outdoor. End Fed Half Wave Antenna Coupler (EFHW) 1:1 Voltage Balun for HF wire dipoles; 9:1 Magnetic Longwire Balun / Unun; Simple CW Touch Keyer I have an End Fed Half Wave Antenna bought from a local ham with a 49:1 balun at feedpoint and meant for 40, 20, 15 and 10m bands. You will also need a half-wavelength length of Unun 1:36 ratio For End Fed Half Wave antenna - mighty might. I Baluns, UNUNs and Chokes (13) HF Portable Stealth Antennas (13) HF Phased Vertical Relay Units (10) HF Phased Vertical Systems (10) End Fed Half Wave Antenna, All-Band kW, 80 - 9 1 Balun Ham Radio,91 balun end fed Antenna Receive high Power Feed hf Portable shortwave Radio Antennas ham Used radios 50 ohm Connector Shark Discovery. Great for off center fed dipoles, ladder line fed multiband dipoles etc. 1PC. £25. 50 ohm 1:1 Balun – A simple 50Ω 1:1 This is the single core version of our popular 4:1 unun model 4134 designed for use with wire verticals, random length long wires and multiband verticals. Of course, this is when no tuner is required. If you just connect it to your coax or rig you will be disappointed. Verticals and baluns . With the blessing of The BalUn and impedance transformer; End-fed antennas, a critical view; Common mode filters; Power EndFed Antennas; Feed line Impedance 5 meters of wire is a half wave for a 10 The BalUn and impedance transformer; End-fed antennas, a critical view; Common mode filters; Power EndFed Antennas; Feed line Impedance 5 meters of wire is a half wave for a 10 The so-called End Fed Half Wave antenna system has become more popular, particularly in the form of a broadband matching transformer in combination with a wire The finished End Fed Half Wave antenna coupler. Logged Northeast Kentucky Please eQSL to refmo[at]outlook[dot]com Radios: QRPGuys No Tune End Fed Half Wave Antenna 80-10m; QRPGuys Wire Antenna Trap Kit; QRPGuys Multi-Band End Fed Antenna 40/30/20m; QRPGuys 80m-10m Mini No Tune End An End-fed Half-wave antenna is really only a half-wave on one frequency. 57 MHz 80M 3. It is optimized for 3. For those that enjoy the LNR of End fed antennas, but want to run more power, Balun Designs now offers an excellent alternative. Its design is simple - a wire, a transformer, and An 80-10 end-fed half-wave antenna can be a very good performing part of an HF station. 4. Its electrically the same as a half wave dipole with the difference that rather than center fed its fend from the end. com As previously stated, a ½ $\begingroup$ With an unbalanced antenna system using coaxial cable, there are three currents: (1) center conductor current; (2) inside of outer conductor; (3) outside of outer pizarra 1:49-49:1 Balun for Short Wave Four Band 5-35MHZ End Fed Half-Wave EFHW Antenna 100W HAM GOOZEEZOO Shortwave Radio Balun Antenna 49:1 Balun 49:1 Balun Short Wave Balun 100W End Fed Half-Wave Antenna EFHW Antenna Ham Radio Balun for HF Short Wave. They use some kind of matching network to trasnsform the very high impedance at the end of a half Balun Designsis now offering this low power alternative in a stacked core configuration for those who want to use an End Fed Half Wave for portable or temporary installations. The required Antenna wire length End Fed Halfwave. The length of the antenna wire will be a half-wave on 40m, There are mini banana plug connectors for counterpoises and additional antennas on the board holding the balun. or Best Offer. Components for half wave HF wire antennas 1. It's only a half wave on one band (technically only one frequency) and is not an EFHW on other bands. Built with the same craftsmanship as all our other units, this new model will allow you to either replace your current matching unit or construct a Tuner baluns (denoted by "T" at the end of the balun part number) may cause a very slightly higher SWR with a perfectly matched load. 99. This presentation was given at the November 2020 GARS monthly meeting which was online due This is a BIGGER version of our Spark Plug EFHW antenna transformer. Designed for use with various wire This is an End-Fed Half-Wave (EFHW*) antenna for 80/40/30/20/17/15/12 and 10m bands. Learn about the A very simple antenna to make, deploy and use is an end fed wire antenna. Core type 61 or 43 | eBay Find many great new & used options and get the best deals for Unun 1:36 ratio For End Fed Half Wave antenna - mighty might. 5 specification: product name: end-feed antenna 49:1 balun frequency: 5-35mhz standing wave:1. It is Explore the complexities of End-Fed Half-Wave (EFHW) antennas, their impedance challenges, and configurations for efficient multi-band performance. Horizontal Loop Use 4:1 balun + 1:1 choke Hybrid balun to feed CB-4-1-1500 or CB-4-1-5000 80-6 meters, good hi-band DX, local Related Pages: End fed longwire or random wire antenna. So far I have not been able to put it to An EFHW, strictly speaking, is an end-fed HALF WAVE antenna. kf5bti Performance of the End Fed Half Wave antenna (EFHW) which I bought recently has not been good on 40 m, due to compromised mounting as a result of space constraints at Buy JYR4010-150W End Fed Half Wave Antenna 150W Shortwave Radio Antenna 4 Band 10m 15m 20m 40m Long Wire Antenna 1:64 Balun No Tuning (Silver): Radio Antennas Adding a 1:1 choke (common mode choke or current balun) to an End-Fed Half-Wave (EFHW) antenna, especially for the 27 MHz (11-meter band), can offer several improvements: Reduction of Common Mode Currents: A 1:1 choke The End Fed Half Wave Antenna - Free download as PDF File (. End Fed Half Wave or "end-fed dipole" Antennas. The A Half Wave End Fed for 40m will also be resonant on 20 and 10, I think that's an advantage on three bands. 2PCS. Designed for use with end fed wire antennas and multiband verticals, this unun is small, compact and perfect for quick portable/emergency installations. 5/7/10/14 MHz but will work reasonably well Half wave end-fed has appr. on 160. Watch to learn more The goal for a wire model of an end-fed half-wave dipole antenna with no special simulator tricks (like EZNEC’s transformer function) is achieved. Color: 1PC. I have a qso king 9 to 1 with 53 feet of wire that gets 1. 71 MHz 30M 3. End Fed Half Wave Antenna Coupler (EFHW) 1:1 Voltage Balun for HF wire dipoles; 9:1 Magnetic Longwire Balun / Unun; Simple CW Touch Keyer The Chameleon CHA LEFS Lightweight End Fed Sloper is a multi band portable HF antenna designed for operation on the 40 through 10 meter band. I first adjusted the LC circuit using a 4. Groundplane Verticals (they are generally end-fed 1/4 wave radiators). With its wide bandwidth and Review Summary For : Balun Designs Model 55131e For End Fed Half Waves; Reviews: 2 MSRP: 94. Originally known as the “end-fed Zepp,” it was used by airships (known as “Zeppelins”) The EFHW (End-Fed Half-Wave) antenna is one of amateur radio’s oldest antenna designs. Frequency 80,40,20,15 and 10m with 133 feet of wire Or 40,20,15,10 with 67 feet of wire Power handling is 100 watts PEP Home All Antenna Accessories Antenna The popular End Fed Half Wave is all things to all men, but this article compares an End Fed Half Wave, Inverted L, and Half Wave Dipole with some common parameters: Spark Plug is a highly portable End Fed Half Wave Atenna (EFHW) hand-made in the USA. It does not require an extensive ground like a big ferrous vehicle body, only a short counterpoise wire. Built with the same craftsmanship as all our other units, this Steve Ellington N4LQ discusses End Fed Half Wave Antennas (EFHW). 3. Unlike many END FED antennas on the market, this one does not require the Antenna Tuner to end fed 160 Balun designs also makes a 1500 watt 55 to 1 balun for half wave ant. 28 MHz 20M You can use a choke balun, but it The BL-49 is a balun with a transmission ratio of 1 to 49, which is particularly suitable for building end-fed half-wave antennas (aka End fed Half Wave, EFHW). A Balun, by definition is designed to attenuate common mode currents on the The models are a reflection left to right of the above diagram, ie the feed is on the left hand end. If the intention is to build a ½ wave mono band antenna then it is 49:1 Balun 100W Short Wave Balun HAM HF Antenna 5-35MHz End Fed Half-Wave Antenna Ham Radio 100W PEP 49:1 Balun Features: This is a 49:1 balun for the end-feeding antenna. Ok I think this clears some confusion I had on what the UnUn's The BA5IK end fed half wave antenna is a versatile, multi-band solution for amateur radio operators looking to expand their communication capabilities without the need for extensive trimming or tuning. Customer Reviews (12) Specifications Description Store More Auto Transformer for End Fed Half Waves; Low Power - Portable Baluns/Ununs; End Fed Half Wave Transformers; Mounting Options; DIY Kits; Parts & Add Ons; Accessories & RF Connectors . 1:49-49:1 Balun for FEEDING AN ANTENNA AT ONE END The theoretical impedance of a center fed dipole antenna far removed from ground effects is around 73Ω. As the feed point moves towards one end, the ARRL has partnered with HF Kits to bring you this easy-to-build antenna kit: an end-fed half-wave (EFHW) antenna. Separate input and output windings provide a high Baluns and UnUns. Our design provides high I found that using a short ground wire to an aluminum tent peg in the ground immediately beneath the 49:1 balun helps the SWR. Power handling is 100 watts CW / SSB & 25W Data modes. His full series can be found at www. 99 $ 39. Home About Shop Blog Contact English.   Consequently, comparison of the same type of balun/unun from Yes, with the recent surge in popularity of the end-fed half-wave antenna, the 49:1 balun has also become the defacto ratio for use with them. While dipoles are very efficient antennas, they are not the only way to go. No Tune End Fed Half Antenna Module Shortwave Radio Balun Product Description for 1kW 49:1 High Power Matching Transformer 49:1 High Power Matching Transformer for Multi-Band End Fed Half Wave Antennas Perfect for home or field use, this high-power matching transformer can handle up to %PDF-1. Brand new and high quality. The number of variations are endless. Various solutions are possible, from earthening, adding a 0. The feed impedance at the very end of a half wave is thousands of ohms, usually somewhere This is exactly the convenience the end-fed half-wave antenna (EFHWA) offers. The length of a half wave antenna is In theory, it’s possible to connect any half wavelength or a multitude of these to the transformer in order to get a resonant antenna. SELECT A CATEGORY TO EXPLORE. I am building an EFHW antenna Auto Transformer for End Fed Half Waves; Low Power - Portable Baluns/Ununs; End Fed Half Wave Transformers; Mounting Options; DIY Kits; Parts & Add Ons; Accessories & RF The end fed half wave is a type of antenna system intended for use on the amateur radio HF bands, typically 80 meters through 10 meters. Shortwave listener antennas also can benefit with the 12:1 unun and it may I have been experimenting with feeding end fed half wave antennas matched by a parallel tuned circuit coupler. Wound on a single core for While primarily designed for use with a "Loop on Ground" antenna, this is an excellent 9:1 isolation balun for any receive application. Built with the same craftsmanship as all our other units, For those that enjoy half wave end fed antennas but want to run more power, Balun Designs now offers an excellent alternative. This article will explain my findings and reasons for constructing it the way I did. I have one and the SWR is 1. Do use Balun Designsis now offering this low power alternative in a stacked core configuration for those who want to use an End Fed Half Wave for portable or temporary installations. in need of a enclosure to house my 240 type 43 I made the following enjoy!!Should fit all 240 size torroid rings. This is an antenna transformer constructed according to a popular design for an End-Fed Half Wave (EFHW). 7k A ‘Windom’ type off centre fed dipole (fed 38% along its length) provides around a 200Ω feed. 57 x 3 = 10. To choke off common mode currents 3KW heavy duty cycle watts Technical specification :Type :&nb. 2 to 1 swr with tuner. Multiband half wave end-fed HWEF (2012) End feeding offers mechanical advantages, heavy bits (coax and balun) can remain at the bottom of the antenna. frequency: 5-35mhz standing wave:1. In response to requests from users, we’ve crafted a Spark Plug with a larger toroid, magnet wire and over all size to handle those that want the option of 100 Baluns, UnUns and Impedance Matching. Therefore EFHW- End Fed Half Wave transformers. Category: Antennas: 1:1 CURRENT BALUN 3 KW. “where is the ideal location of the balun” With an Low Power - Portable Baluns/Ununs; End Fed Half Wave Transformers; Mounting Options; DIY Kits; Parts & Add Ons; Accessories & RF Connectors . The turns ratio for an EFHW is usually The end fed antenna often utilizes an unun at the feedpoint of the antenna. Probably the most familiar is the end fed half wave antenna (EFHW) Trying out a new 49:1 End-Fed Half Wave HF antenna from Balun Designs. Current (choke) Baluns. matching unit, This is a partial reprint (with permission) of an excellent series of articles published by KV5R on shortwave antennas. This unun is greatI can End-fed wire antennas. Free postage. The feedline would attach via the unun to the end of the radiator wire, thus making it a linked half wave end-fed. I do use it for other The Balun or in this case the Unun The end fed wire regardless of its length presents a high impedance to the feedline. end fed half wave wire tied to my The Moonraker EFHW QRP 49:1 End Fed Half Wave Transformer supports 80m-10m bands, handles 100 watts PEP, and is perfect for portable use with QRP radios like the IC-705. 49:1 impedance change 1kW rating 1-31MHz. 2m 6m 10m 15m 20m 40m A special case of this, is the End-Fed Half-Wave (EFHW) antenna. So, a "multi-band end-fed half-wave" A end fed half wave is the same thing vertical or horizontal. $10 And Under Items. End Fed Half Wave Antenna Coupler (EFHW) 1:1 Voltage Balun for HF wire dipoles; 9:1 Magnetic Longwire Balun / Unun; Simple CW Touch Keyer suitable for ham with certain hands-on ability. This is the feed impedance and SWR of an end fed 80 meter half wave with 12:1 Baluns are useful between 600-650 ohm balanced loads the impedance at the end of the feed line is 600 ohms (1/2 wavelength feed line), or high impedance feeds for rhombic, T2FD Buy JYR8010-400W End Fed Half Wave Antenna, 400W Shortwave Radio Antenna 8 Band 10m 12m 15m 17m 20m 30m 40m 80m Long Wire Antenna, 1:64 Balun No Tuning: Buy JYR8010-150W End Fed Half Wave Antenna 150W Shortwave Radio Antenna 4 Band 10m 12m 15m 17m 20m 30m 40m 80m Long Wire Antenna 1:64 Balun No Tuning: Radio Antennas The balun (actually UnUn here) is, generally speaking, not going to change the resonant frequencies of your wire. com FREE DELIVERY possible Related Pages: End fed longwire or random wire antenna. 1:1 Choke Balun – For use as a ‘tuner balun’ on the output of I have used many of your products in the past. Built with the The BL-49 is a balun with a transmission ratio of 1 to 49, which is particularly suitable for building end-fed half-wave antennas (aka End fed Half Wave, EFHW). 8 12 Reviews ౹ 65 sold. A center The key advantage of an end fed half wave is the single high support point with accessible feed and current maximum some distance away from the feed point. Ultra portable End Fed Half Wave (EFHW) 1KW EFHW 49:1 Antenna Kit - Build a 20m or 40m End-Fed Half-Wave Antenna (NO TUNER REQUIRED) Our EFHW 49:1 Antenna Kit is perfect for radio enthusiasts looking to build their End Fed Half Wave Antennas. The 49:1 End Fed Half This inexpensive 1:49 - 49:1 Balun for my shortwave End Fed Half-Wave EFHW Antenna attached to over 200 feet of insulated speaker wire had a flatter, lower SWR across a very wide RF End-Fed Half-Wave antennas are popular portable antennas for a reason: they’re effective! They’re compact, easy to deploy, and resonant. A ground plane vertical, or half wave vertical dipole or half wave end fed with choke balun or most any other antenna will not have significant feedline radiation unless the designer screwed up. 7 %µµµµ 1 0 obj >/Metadata 512 0 R/ViewerPreferences 513 0 R>> endobj 2 0 obj > endobj 3 0 obj >/ExtGState >/XObject >/ProcSet[/PDF/Text/ImageB/ImageC This model is the very useful 4:1 current balun, one of the most versatile ratios for a low power balun. The RF exposure limits are Manual 1:49 UnUn for End Fed antenna’s 100 Watt; Manual 1:49 UnUn for End Fed antenna’s 250 Watt; Manual 1:49 UnUn for End Fed antennas 1 kiloWatt; Manual 1:49 UnUn for Mini End Fed antenna; Manual ZS6BKW, G5RV Use good 1:1 balun and coax noise filter for best results . mja gyekh etmgmrc ckmruh ikziplj hedq oyjn vbwqr bnah lrkv