Reacting to Capacitance, Inductance, Resistance, Frequency
Antenna
2018 QST Antenna Design Competition Winners Announced
ARRL has announced the winners of the 2018 QST Antenna Design Competition. “Dozens of entries were received, but only three could win,” said… Read more
Optibeam OB8-4M 8 Element 4 Band
The OB8-4M is an extremely effective, compact and innovative Yagi for the classical four bands 40, 20, 15 and 10m. It is the first trapless Yagi for t… Read more
The ULTIMAX-8040 broadband dual band double bazooka for 40 & 80 meters
The ULTIMAX-8040 broadband dual band double bazooka for 40 & 80 meters is a fantastic antenna using a newly designed “HY-Q” coax coils that gives… Read more
Antenna Yagi 17 elements 4 bands – GPX Antennas
Frequency: 7, 14, 21, 28 MHz Number of elements: 7 MHz – 3 el. 14 MHz – 4 el. 21 MHz – 4 el. 28 MHz – 6 el. Gain dBd: 5,8… Read more
Review
Windom 40 Antenna By Chameleon Antenna
Check out this video on the Windom 40 Antenna from Chameleon Antenna. This antenna is an off center dipole that was specifically designed for 40, 20 a… Read more
3. LDMOS HF AMPLIFIER 100W INPUT 2400W OUTPUT BLF188XR 2 PCS 1.8-54 MHZ
LDMOS HF amplifier 90W input 2400W CW SSB output 1.8-54 MHz This a ready power amplifier. You will need a case and power supply only! Water-cooled h… Read more
QRP Rig Comparison , FT817 / X108G / X5105 / mcHF RS-918
Here is a video explaining the basic comparisons to each one of these radios Read more
SunSDR2 PRO at SK3W in CQWW SSB
“How does the SunSDR2 PRO perform in a multi operator contest environment? We wanted to test the PRO in the toughest possible environment, a mul… Read more
Equipment
Ameritron ATR-20 Antenna Tuners ATR-20
Ameritron ATR-20 Antenna Tuners are versatile, high-power antenna tuners. The ATR-20’s roller inductor “T” matching network continuo… Read more
Bose unveils its first wireless noise-canceling headphones
Bose QuietComfort 35 This is the Bose product a lot of people have been waiting for, the QuietComfort 35, an active noise cancelling headphone that… Read more
Ailunce HS2 HF VHF UHF SDR Transceiver
HS2 is an ultra-portable full-frequency full-mode SDR radio. Receive frequency coverage 300K~1.6GHZ. The built-in network port can realize remote oper… Read more
Elecraft KPA500 Compact 160-6 M Solid State Amplifier
500+ Watts in a compact package the size of the Elecraft K3. We are proud to introduce the KPA500: A 500-watt solid-state amp that inte… Read more
News
Reacting to Capacitance, Inductance, Resistance, Frequency
Reacting to Capacitance, Inductance, Resistance, Frequency Read more
Ham radio and Linux – Stop your radio from automatically becoming the default audio device.
A simple change to make, it saves me time manually setting my default back to the computer every time I power up or plug in the radio. Read more
Good news from Austria and Germany ( DL and OE )
Thanks to the constant efforts on the part of the ÖVSV, the Austrian telecommunications authority has announced clearance for the 630 m band… Read more
Bob Fontana, AK3Y, Wins the December 2020 QST Cover Plaque Award
The winning article for the December 2020 QST Cover Plaque award is “The Tuna Tin S — A Bare-Bones Synthesized QRPp Transmitter,” by Bo… Read more
ISS Slow Scan TV event 145.800 MHz FM
An ARISS Slow Scan TV (SSTV) event is scheduled from the International Space Station (ISS) for December 24-31. This will be a special SSTV event to ce… Read more
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