beskytte Trække på Republik 1750 hz tone afstand måske Glat
Kenwood TU-8 Tone Board – Jahnke Electronics
ctcss decoder encoder, sub audio tone, subtone, 88,5Hz, Tone squelch, ne567 single tone decoder,video squelch sync decoder
Get the Right Signal Tone
Sub-tone generator for VHF-UHF rigs
1 If a guitar string has a fundamental frequency of 500 Hz, which one of the following frequencies can set the string into resonant vibration? (A) ppt download