Problems with broadband / Ethernet over power lines causing QRM on HF

Part 3 of UK QRM Problems with broadband / Ethernet over power lines causing QRM on HF

New song and video about rebuilding a ham radio station - including teaching the viewer Morse code

The Ham Band is Andrew (G3WZZ/OZ1XJ/OZ5E) and his wife Lissa and a group of Nashville session musicians. All the songs are about amateur radio and the booklet which comes with the "Seek You" CD tells the whole story of contests, dx-peditions, antennas etc.

Schematic of the 4 tube radio, experimentally built in a way of the radio-pioneers (1910-1945). The radio acts as a cascade type receiver when the antenna coil has a high self-inductance, with lower self-inductances of the antenna coil you can put in a mixing process with the oscillator. Perhaps...

The X-Band microwave motion detector was moved to 10.25GHz. We explore the output of the HP x421A detector diode attached to the HP x532A X-Band wavemeter, and verify the frequency of operation.

The X-Band microwave motion detector was moved to 10.25GHz in Part 1, and we explored the diode output in part 2. In part 3, we examine the pulse width and pulse repetition rate with the oscilloscope, and draw a conclusion about the diode modulation.

Observations of electromagnetic (radio) signals on very low frequencies, 0 KHz - 10 KHz. Observed 10 may 2008, approx. 23.00 hour on 4,5. KHz: next to the original radio resonance of 4,5 KHz there is another resonance (spectrum on approx. 10 KHz), that comes in and fades away after 30 minutes....

This video shows how to install a NMO type antenna mount..It was mounted on a 2009 Ford F-150 pickup truck at Kcomm the ham radio store in San Antonio, Tx..I aquired my brother Tim KE5CFZ to help me.. The NMO mount requires a 3/4" hole which was drilled thru the roof just in front of the cargo...

A Fun Video Showing Some VHF Grid Bandit Members