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No outside antennas allowed High RF noise level No space for an antenna You live in an apartment house Theft and ...
read morePLL Synthesized for accuracy (0.1 kHz or better, adjustable) with digital receivers Easy construction and setup, with VOM ...
read moreThe LF90 transmitter is a 1 watt PLL synthesized CW and BPSK transmitter covering the 135-137 kHz or 160-190 kHz ranges in ...
read moreThis modulator unit operates from a nominal 9 volt supply (use 220 ohm resistor in series for 12V) and outputs on either ...
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