“Rolf, KE1Y, has a EFHW 80 – 10 and it’s wire has broken near the loading coil. He wants to know if there is a better way to have the loading coil so it would be so likely to break and Dave’s view of the EFHW.”
Antenna
ANTENNA LAUNCHER – THE AIR BOSS DEMONSTRATION
The AIR BOSS antenna launcher was designed to launch a light fishing line over trees in order to create temporary antenna for ham radio operators. Sin… Read more
Vari-Ten Wire Antenna Tensioners
Our wire antenna tensioner is a high quality variable tensioning device that absorbs the shock on amateur radio antennas when the support trees sway i… Read more
New ! Chameleon Antenna 7.0-54.0 MHz CHA WINDOM 40
The CHA WINDOM 40 antenna is designed for 40m, 20m & 10m. A tuner may be needed to tune the other bands between 80M and 6M. Power handling is 250W… Read more
Triband end-fed half wave antenna for portable use
Describing and demonstrating an end-fed multiband antenna for portable use. It’s a full-sized half wave on 20 metres and a loaded half wave on 4… Read more
A Super-Duper Tiny 3D-Printed HF Radio Antenna.
A Super-Duper Tiny 3D-Printed HF Radio Antenna. Read more
Review
mcHF SDR QRP RS-918 Review
RS-918SSB Main Features Spectrum Dynamic Waterfall Display Multiple Working Modes: Receive,Transmit,Tune,VFO,SPLIT DSP Digital Signal Processing Noise… Read more
Measuring Crystals with NanoVNA and other tools
Measuring Crystals with NanoVNA and other tools Read more
Mountain Topper Radio review by G0POT
A review of the LNR Precision version of the MTR, Mountain Topper Radio a three band, CW only, QRP trail friendly transceiver. Mountain Topper Tri-Ban… Read more
Equipment
YAESU FT-8900R
YAESU FT-8900R 29/50/144/430 MHz FM Transceiver The FT-8900R is a ruggedly-built, high quality Quad Band FM transceiver providing 50 Watts of power ou… Read more
AOR AR-DV10 100 kHZ ~1300 MHZ
AOR AR-DV10 Here is a teaser on the new products for 2017-2018 which will be presented at the HAMFAIR AR-DV10 DIGITAL RECEIVER ● 100kHz～1300MHz Analog… Read more
![Yaesu FT-991 [ New Video ]](https://i0.wp.com/www.nerfd.net/wp-content/uploads/2021/07/yaesu-FT-991-265x168-1.jpg?w=635&ssl=1)
144 MHz filter stops interference
Designed and manufactured by SOTABEAMS, this neat bandpass filter is for use with handies (HT) in areas with multiple transmitters. In such areas, man… Read more
BUILD A COMPUTER TO CW INTERFACE
Using a well-known circuit, I show you how to build a simple computer interface so that your logging software can send CW through your radio. The logg… Read more
News
JA1TOKYO – Olympic Games
Olympic Games – JA1TOKYOOn July 16 JARL opened the special commemorative station ‘JA1 TOKYO‘ in Nishitokyo City, Tokyo, to commemora… Read more
Massachusetts Court Okays Amateur Radio Tower, Citing Board of Appeals’ Error
A judge in the Massachusetts Land Court has ruled that the Zoning Board of Appeals in the City of Framingham “erred” in revoking a building permit for… Read more
FCC Investigating Alleged “Jamming” on 40 Meters
Reports suggest that jamming stations have been deployed on the lower portion of 40 meters. The jamming appears to be coming from Cuba. The signals, s… Read more
Audio and visual of Cuba jamming 40M, making it to OH
Audio and visual of Cuba jamming 40M, making it to OH Audio and visual of Cuba jamming 40M, making it to OH. #hamradio pic.twitter.com/J4wHLPMGhF — Ha… Read more
Volunteer radio operators to the rescue in Belgian floods
July 2021: Brabant Wallon’s Emergency Radio Network volunteers stepped in when the Police building in Wavre, Belgium – including its Tetra anten… Read more
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