To allow multiple users to share one carrier frequency, many handheld transceivers employ Continuous Tone Coded Squelch System (CTCSS) encoders and decoders. CTCSS systems add a tone at the low end of ...
The output is PWM and must be passed though low pass filters (I used 2 RC filters) to create a sine wave, then buffered with an op amp, followed by a 10k trim put to set the final output level.
This project is the result of creating an FTS-8 CTCSS module for a Yaesu FT-736, owned by my friend. It's a recreation of the PCB from an existing 2003 project by ...
The AK2345 is an IC which supports CTCSS (Continuous Tone Controlled Squelch System), compatible with TIA/EIA-603 standard. A single CTCSS may be selected from among 50 different frequencies within a ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results