AWA Signal Sniffer, an AF & RF Signal Tracer
The AWA Signal Sniffer PCB circuit is a compact battery-operated signal tracer capable of detecting audio frequencies and radio frequencies and delivering the output to a loudspeaker. The purpose of signal tracing is to locate the defective stage of a malfunctioning electronic system such as a radio, audio amplifier or guitar amplifier.
The AWA Signal Sniffer is a handy audio amplifier for a quick check of audio output from preamps, mixers, tuners, microphones, etc. The bare PCB ships with a schematic and representative parts list. This offer is for the bare PCB only. Additional parts are required and the current cost, without enclosure, is about $21. The Hammond enclosure is about $7 more and drilling instructions are included with the PCB.
Price: $16 including shipping to USA addresses.