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1. www.eham.net › reviews › view-productReviews For: ATU-100 EXT - eHam.net

   www.eham.net › reviews › view-product

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   If your plan is to use the ATU-100 with such antennas as a G5RV, OCF dipole, or end feed long wire with the appropriate unun, it may work for you. If your primary interest is with field expedient antennas, it will not!

2. noji.com › hamradio › pdf-ppt80-10 end-fed half-wave antenna with 49:1 unun - Noji

   noji.com › hamradio › pdf-ppt

   An 80-10 end-fed half-wave antenna can be a very good performing part of an HF station. But its performance depends heavily on a well-designed and carefully constructed 49:1 unun, which matches the long wire impedance to within tuning range of operation. But the perfor-mance of an end-fed antenna is also very dependent on height above ground.

3. www.youtube.com › watchCompared: 4:1 UnUn's for Ham Radio Antennas - YouTube

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   In this video, we take a look at some 4:1 UnUn's I made for an upcoming antenna project. We will test their impedance transformation capability and test for...

4. www.kb6nu.com › playing-end-fed-wire-antennas-91-ununsPlaying with end-fed wire antennas and 9:1 ununs - KB6NU

   www.kb6nu.com › playing-end-fed-wire-antennas-91-ununs

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   12 sie 2016 · A 9:1 unun is a transformer that reduces the impedance at the input by a factor of 9. So, if you connect a length of wire that presents an impedance of about 450 Ω to the input, you’ll get an impedance of about 50 Ω on the output. In fact, the 9:1 unun that I built is actually an autotransformer.

5. www.eham.net › reviews › view-productReviews For: ZeroFive 10-80 Meter 43 ft. Ground Plane Vertical -...

   www.eham.net › reviews › view-product

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   My ZeroFive 10-80 Freestanding Groundplane Vertical Antenna with Unun is absolutely fantastic. Antenna shipped very well protected as any quality item should be. Very easy to assemble, my advice is to purchase Tom’s custom fold over base that has “J” hooks for concrete mounting.

6. www.worldwidedx.com › threads › zero-five-24-foot-verticalZero-Five 24 Foot Vertical | WorldwideDX Radio Forum

   www.worldwidedx.com › threads › zero-five-24-foot-vertical

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   28 lis 2011 · My first setup was the way ZEROFIVE recommends installing the 43 vertical using a full range tuner and using a UNUN and a coil on the 43' vertical antenna this worked well up to 200 watts at my location, but after 200 watts the efficiency dropped. the present setup uses a screwdriver antenna in series with the 43' stinger and 3500' of radiales ...

7. www.eham.net › reviews › detailReviews For: Diamond BB-7V 80-10 vertical - eHam.net

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   N9BUN. Rating: 2022-05-30. Excellent antenna for tight places. Time Owned: 0 to 3 months. I've been using this antenna for over 3 months now and it works great. I spent the extra bucks and bought and LDG remote antenna tuner for installation at the antenna base and that makes all the difference in the world.