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P A 0 J f C T
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Signal Injector (ART392E)
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Tracer Injector V2 - Pacific Antenna
Signal Tracer/Injector Pen V6.3 – TH custom effects
P A 0 J f C T
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Signal Tracer/Injector Pen V6.3 – TH custom effects
Signal Tracer/Injector Pen V6.3 – TH custom effects
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Phillips-Medisize unveils new disposable injector pen
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Signal Tracer/Injector Pen V6.3 – TH custom effects
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Audio Signal Injector - Codrey Electronics
Signal Injector (ART392E)
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Signal Injector Circuits for Quick Troubleshooting of all Audio Equipment - Homemade Circuit Projects
I found a load of electronics inside this old pen. My guess is that it's a homemade crystal radio but there doesn't seem to be any way of attaching an ear piece. :
How To Make Your Own Audio Signal Injector | Electronics Repair And Technology News
Signal Tracer/Injector Pen Case / Cover – TH custom effects
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Signal Tracer/Injector Pen V6.3 – Kit – TH custom effects
Automotive Battery Tester DC3-36V Auto Circuit Tester Vehicle Voltage Pulse Signal LED Light Testing Pen Car Power Voltmeter - AliExpress
Signal Tracer Pen & HowTo Audio Probe - YouTube
