Here is free modification information you can use to enhance your radio! As well as schematic diagrams for various electronics, etc. See the pages below!
Cobra 29 LTD Squelch Modification / FIX
50-Ohm 10-Watt Dummy Load Schematic & Construction Notes (PROJECT)
SciTech PS-3R Power Supply Schematic
Pyramid PHASE III by Tenna Model PS-20 Power Supply Schematic
(VR3) Virtual Reality VRCD400-SDU Head Unit wire harness pin-out info
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