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.

F2FO ( Claude Paillard ). Make your own tubes .

The manufacture of thermionic (radio) valves part 3

This is a slide show overview prepared by Scotty showing his work with converting PC Power supplies to ham radio use presented at the August 2007 FSARC meeting.

Clegg 99er is a Compact top quality 6 meter transceiver made in 1961. LCF School LCFschoolThis is a tube unit and will operate on 110vac with a built in power supply or external 12 volt unit. The transmitter is crystal controlled and receiver covers the lower 2 Mhz of the 6 meter amateur...

I recently visited Lyme Regis UK. Like all good hams I took along my wireless kit. I setup my FT-817 and MP-1 vertical antenna and worked some PSK-31 DX. I shot this with my Canon SD750 digital still camera using the video mode. It worked pretty good. Several times I had to empty the memory...

Yaesu FT817 LDG Z11Pro LongWire QRPp I6IBE Ivo Pratola Peligna

Fall is the perfect time for hiking, it\'s not too hot and not too cold. Last weekend I took a day trip to hike up High Mountain in New Jersey and activate SOTA summit W2/NJ008. It\'s really easy to set up an HF portable radio and not a whole lot to carry up the mountain. This...

installation of new antenna and 7/8 hardline on top of co-op

What is Hellschreiber. Hellschreiber is a German name, meaning "bright writing", or "clear writing". Hellschreiber is anything but a new mode. It was first patented in 1929 which makes it the oldest machine generated data transmission mode used in amateur radio. To put this in perspective, SSB...