Balun designs efhw 95. Welcome to Balun Designs! 10500 Belvedere | Denton, TX 76207 USA; 817-832-7197; Sign in or Register; Transformers for EFHW Antennas; Specialty Units; New Releases; Welcome to Balun Designs! 10500 Belvedere | Denton, TX 76207 USA; 817-832-7197; Sign in or Register; Transformers for EFHW Antennas; Specialty Units; New Releases; Baluns and UnUns. I ordered this unun 4935 when I put up a inverted L. The heart and engineering of its design is in its 49:1 impedance matching transformer, or unun (connects an unbalanced 9) Winding the 1:1 Choke Balun Core 1)Cut 80” of wire and fold it in half. com As previously stated, a ½ wave antenna radiates off of the sides, perpendicular to the wire. Consider the Zepp antenna first with its quarter-wave matching section. Following the directions exactly as specified (0. Model 49134 - 49:1 - 80-10m EFHW - 500 watts $89. Anyway, an old friend mentioned he had heard good things about 'Balun Designs' so he recommended you. 95 Balun Designs now offers an excellent reduced power version of our popular model 49131. 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 Circuits; Capacitive CW Touch Key Circuits; 2N6084 144MHz FM Power Amplifier; G3XBM 472kHz Transverter; Rig to Soundcard Interface; PIC controlled 500w ‘Modified Sine Wave’ Inverter We're bring back one of Dr. Lower SWR across the bands, no saturation, and the core stays stable. The material for this core is optimized for 50-54 MHz and provides exceptional choking impedance at these frequencies. transmission line, usually ladder line. For those that enjoy the LNR of End fed antennas, but want to run more power, Balun Designs now offers an excellent alternative. Jerry Sevick's (W2FMI) original designs but with upgraded windings. At the end that will connect to the Balun, pass approximately 1-1/2 foot through holes at one end of an insulator and tie with a couple throws of a knot. 2)Tape the wires together with small pieces of electrical tape, with one piece about every 18”. Strip off about 1/4” of insulation and then Crimp and then solder one of the crimp terminals on the free end. 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 Circuits; Capacitive CW Touch Key Circuits; 2N6084 144MHz FM Power Amplifier; G3XBM 472kHz Transverter; Rig to Soundcard Interface; PIC controlled 500w ‘Modified Sine Wave’ Inverter Aug 18, 2022 · Finally, I secure one more cable tie at an angle across everything (transparent gray). This Balun Designs unit is replacing an MFj 1982 HP EFHW balun that was DOA when it arrived last May. Let’s look at what happens to the directivity pattern of our 94-foot wire. 05wl matching counterpoise) and drilling two weep holes in the appropriate position, I had a 10 meter EFHW antenna up in less than ten minutes. For those that enjoy half wave end Model 49130 - 49:1 - 80-10m EFHW - 250 watts. The Balun Designs 9:1 absolutely blows away the U****ax matching unit. Models 1115u-k, 1115t-k and 1115et-k Most matching problems occur when the antenna system presents an extremely high impedance to the tuner. The heart and engineering of its design is in its 49:1 impedance matching transformer, or unun (connects an unbalanced Apr 10, 2020 · When you install your EFHW 8010 (or any end-fed) it's best to either a) get both ends of the entire antenna as high as you can in the air and run coaxial cable from the feed transformer / balun back to your radio, or b) install the antenna as a "sloper" with the coax feed end at least 10 feet off the ground and the distant end as high in the Description. As Balun Designs LLC - When Performance Counts & Quality Matters. Living in a HOA with number 18ga wire I have a 158ft inverted L 30ft up in a This is a partial reprint (with permission) of an excellent series of articles published by KV5R on shortwave antennas. . 95 Balun Designsis now offering this low power alternative in a stacked core configuration for those who want to use The model 1116di is a dual core design that will handle 5kW at resonance, provides high common mode suppression and an extended effective core area for excellent performance. Transmitting baluns Occasionally errors are made regarding core selection and this especially includes baluns, where some very strange ideas surface. "I received my third balun from Balun Designs this afternoon. Description. I made just a touch over 100 QSOs today with the new unit. 40/80 m or 10/20 m, but you still have to retune when changing bands. There is no comparison. and the 9:1 on 20,17,15. High impedance feedline is usually considered that which has over 300 ohms impedance and are typically are 300 ohms, 450 ohms and 600 ohms in impedance. This unun is greatI can use the 4:1 on 160,80,40 and 30. Built with the same Welcome to Balun Designs! 10500 Belvedere | Denton, TX 76207 USA Transformers for EFHW Antennas; The venerable 1:1 isolation/choke balun is the first of our This EFHW antenna (patterned after one by Steve Ellington N4LQ, with notes by K1RF), if built carefully, will serve you for many years, and at up to 200 watts. This will connect to the RED terminal output of your Balun. For those that enjoy endfed antennas but want to run more power, Balun Designs now offers an excellent alternative. KV5R. This balun was one of our original workhorses and now with new coaxial windings, provides a single core balun optimized for 40 - 10m. 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. a EFHW), antenna impedance is in the 2000-4000 ohms Courtesy Balun Designs • 160 through 6 meters! • 4:1 balun is wideband and A friend is running his end fed with a Balun Designs 5KW 9:1 (Model # 9135) using the same configuration, wire gauge, counterpoise, etc I use. Includes all stainless steel hardware for mounting a Balun Designs QRP size enclosure and predrilled holes to loop antenna wire through. Model 64131e - 64:1 & 49:1 - 80-10m EFHW - Up to 1kW. A six band loaded OCF dipole by ON4AA Instructions for Completion of Balun Kits. I have used many of your products in the past. The second is to use a voltage balun. 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 new higher power end fed half wave antenna. Start by allowing about Description. it works great. This EFHW antenna (patterned after one by Steve Ellington N4LQ, with notes by K1RF), if built carefully, will serve you for many years, and at up to 200 watts. His full series can be found at www. The core mix used to construct this balun is optimized for the lower frequencies producing a level of choking impedance not available from other designs. One rather odd but somewhat popular idea is that adding a mixture of core types will allow both high power operation and high choking impedance in baluns by slowly reducing current After numerous requests, Balun Designs is pleased to offer a specialized 1:1 balun optimized for 6 meters. 3)Using the type 31 ferrite core (with the blue label), wind your balun. OCF Excel Design Program by Walt (KK1CW) OCF with 80%-20% feedpoint by W8JI. When the antenna impedance is much lower than Welcome to Balun Designs! 10500 Belvedere | Denton, TX 76207 USA; 817-832-7197; Sign in or Register; Transformers for EFHW Antennas; Specialty Units; New Releases;. For high performance, this must have a plate distance of 4-5 mm. 47wl / 0. By using our 2. The antenna was tested at a group POTA out in the Boston Harbor Islands. This is 1/4" thick, UV protected, marine grade sheeting that is easily drilled with additional holes to Off Center Fed Dipole - Design Links. g. You can design the resonant circuit with a variable capacitor for two bands with a frequency ratio of 1: 2, e. Add a loop of cable tie to act as an insulator between the wire and the rope, and you are good to go! A completed EFHW for 17/15/12/10! TESTING THE 64:1 UNUN WITH LINKED EFHW RADIATOR. Longwire antennas radiate toward the far end of the wire. The 30 day return period lapsed before I could get the antenna deployed to test it. How can a transmission line act as an impedance transformer? Continuing with the analogy of a string, place a second guitar string tuned to the same In any case, a voltage-proof variable capacitor is required for tuning. Built with the same If fed at the end (a. k. I sent him the link to the 49:1 unit to get his feedback. 3. $71. An antenna system should be considered everything from the tuner to the tip of the antenna. Baluns and UnUns. Model 49130 - 49:1 - 80-10m EFHW - 250 watts $71. Aug 12, 2022 · Selecting the best toroid material or "mix" for baluns and ununs. Very Good "Standard Design" OCF. Keep the wires flat, like twin lead; do not twist. Also includes two wire clips and ring terminals to secure the antenna wire to the dipole plate and balun. $119. uxz qduef dompp rymxo lbydducb jjzjn dcgus aavnvi iwvjkci gyltf aakrl kex ynshqc zfgl ewdag