$103.01
Audio-Technica PRO35CW Cardioid Condenser Clip-on Instrument Microphone Cable with Locking 4-Pin Connector for UniPak Transmitters
$149.00
Cw-04 Miniature Wireless Audio Transmitter-receive Recording High Sensitivity Pickup Mic Spy Bug
$84.90
RM Italy KL 200P Mobile CW Transmitter
QST Devoted Entirely To Amateur Radio August 1932 : Building A Low Cost 1750 Kc. Phone C.W. Transmitter Part II, Making Practical UseOf Grid Bias Modulation