Propagation was quite poor when this video was recorded, but for better or worse, the SDRplay is connected to an 85 foot vertically oriented triangular loop and is simultaneously receiving the AM BCB, 75 meters, and 40 meters. Toward the end of the video, the 3 virtual receivers are tuned to 3885, 1885, and 7290, the 3 AM calling frequencies on 75m, 160m, and 40m. Since Radio China International was sitting on 7285 the 40 meter receiver was tuned there at the end. The SDRplay was set to receive a 10 MHz swath of the spectrum for this video. The SDRplay does a beautiful job receiving the AM aircraft band, the VHF-UHF public service frequencies, the FM broadcast band (in stereo) and pretty much anything you can think of between 10 kHz and 2 GHz.
HAM Radio Q&A httpvh://youtu.be/paoYN2auGEU
RF Ground and Ground Planes - Ham Radio Q and A Episode 4
Today we talk about the RF ground, what it is and when it’s necessary. The purpose of the RF ground is to act as a reflector....
Master class from R2AA Jack httpvh://youtu.be/wWDM8rnc-ts
Video by R2AA Jack Dan
Just 1 hour operating in "20 YEARS RCC@-marathon. I have never heard such a pile up... even from 5B4 and EA8... More than 380 QSOs...
NXP’s Unbreakable LDMOS: BLF578XR Power Transistor httpvh://youtu.be/8ziYqjMQGEQ
Video by NXP Semiconductors
NXP Unbreakable BLF578XR: http://www.nxp.com/pip/BLF578XR.html
Tired of replacing tired, dead power transistors? Check out NXP's Unbreakable...