Here is the famous Hamcom Tnc with an AF filter. You can transmit and receice SSTV, FAX. CW, Amtor RTTY. Also monitor VHF and HF packet
There are many nice programs you can use for this TNC as jvfax (for sstv, fax) ,hamcom (for CW, RTTY, Amtor), ezsstv (for sstv) and pktmon (for HF and VHF Packet monitor) .
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