David, VK5DGR, built this very fine QRSS rig, and is currently shaking up the grabbers with 20 mW.
I really like his way of putting that power level in perspective:
"Look around your room and find a glowing LED. Well a typical red LED has 2V and 10mA flowing through it, or about 20mW. It can barely make it a few metres to be detected by your eyes. Imagine detecting it at a range of 1200km! That’s what I find remarkable about QRSS - tiny power levels that go a very long way."
For more info, go to David's "Beer, Coffee and a little DSP" blog:
http://www.rowetel.com/blog/?p=118
Re: Fair Radio and Dayton Hamfest Photos May 2024
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Thanks—excellent pictures. I see many items that probably would have
followed me home, for better or worse.
#4828 and #4829: Nice old homebrew, with turns...
8 hours ago