Mike, I run the UnUn from Palomar for my EF Random. I started with one I built, but it was not very good, and got worse with weathering. I changed to the Palomar one, and have had no problems. I ran common wire instead of the wire from Palomar and regret it. I have since acquired the same wire as listed in your example from Palomar, and it is on my list to replace the wire I have up now. Some things I have found to be very important to running an end fed antenna: 1. Station ground is critical, it NEEDS to be as close to the transmitter as possible, and works better if you bond that ground rod to your utility ground as well. 2. I tried 2 counterpoises, direct ground from the UnUn, and both. The best results are with both. 3. You will need a tuner to get the most band coverage possible. I have used both an autotuner and a manual tuner. The autotuner will get you a match, the manual gets you an almost perfect match. 4. The NVIS performance of my antenna is nowhere near as good as modelling suggests, and the DX is much better than the modelling suggests for the height of my antenna. The combination of 1, 2, and 3 suggest strongly that the dirt under my house is a very poor ground. Your results may vary.
Ron KE4DRF On Thu, Jan 28, 2021 at 11:23 AM Gary Sitton via BVARC <[email protected]> wrote: > Mike: > > I just installed a MyAntenna EFHW 40-10-2K wire antenna. I chose > the 40 to 10 model as I do not use 160 or 80 meters. It is hung in an > inverted V configuration: the center at 30' and ends at about 10' from > the ground. The total length was about 63' and the final SWR was less > than 1.5:1 on the the phone bands except for 10 meters where it was > 2:1. The modeI got was designed for 1.5 KW peak and seems to be > of excellent construction. There is a 7:1 UNUN included in the package > but I did not examined it. I would be glad to discuss any other details. > > 73, Gary K5AMH > (713) 305-6765 > > 1/28/2021 9:45 AM, Michael Giannaccio via BVARC wrote: > > Does anyone have any experience with this product: > https://palomar-engineers.com/ferrite-application-experts-2/Bullet-End-Fed-500-1500-Watt-Antenna-1-8-61-MHz-55-203-FT-p74356626 > > Or this product: > https://www.hyendcompany.nl/antenna/multiband_40201510_m/product/detail/2/HyEndFed_4_Band_Black_Clamp_MK3#prod > > > An end fed antenna is the best fit for my property. I can easily run the > 71 foot model as either an inverted L sloper or as a regular sloper. The > highest point will be 18-20 feet and the low point will be around 6-7 feet. > > I have a few questions about this antenna as well making a DIY 20 meter > delta loop. If anyone is willing to give me a few minutes of your time to > pick your brain off this thread that would be much appreciated. > > > > -- > 73, > > Mike Giannaccio > KI5LFZ > > ________________________________________________ > Brazos Valley Amateur Radio Club > > BVARC mailing > [email protected]http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org > > > -- > Gary Sitton, K5AMH > [email protected] > SDR/DSP Consultant, > "Have FFTs, Will Travel." > ________________________________________________ > Brazos Valley Amateur Radio Club > > BVARC mailing list > [email protected] > http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org >
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