Updated Suitable radios and modems (markdown)

Suitable-radios-and-modems.md

@@ -3,7 +3,7 @@
   - (BT) custom AFSK1200 LibAPRS based modem with increased TXTail parameter and Baofeng handheld transceiver: 450 works fine, 700 works with small gaps, probably LibAPRS needs some tweaks: https://github.com/markqvist/LibAPRS
   - (USB) HC-12 modules: works, but application needs to use lower USB serial bit rate (change from Preferences), because module RF bit rate is hardwired to its serial bit rate, also module needs to be preconfigured with AT commands first
   - (TCP/IP) Direwolf running on PC + stationary transceiver with audio in/out
-  - (SoundModem) Transceivers such as MCHF/IC-7x000 with built in USB Audio
+  - (SoundModem) Transceivers such as MCHF/IC-7x000 with built in USB Audio and USB CAT PTT control, successful FreeDV 1600 mode operation between MCHF with built-in FreeDV support and ICOM over Codec2 Talkie application, successful two way operation between FreeDV desktop app and Codec2 Talkie
 - Tested, works, but not too stable, probably needs TXTail tuning:
   - (USB) AFSK1200 PicoAPRS: http://www.db1nto.de/index_en.html
   - (BT) AFSK1200/GMSK9600 Kenwood TH-D74A: https://dl1gkk.com/kenwood-th-d74-bluetooth-packet-radio-setup/