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(1) ICOM HF - VHF Transceivers with 8 pin DIN Accessory ACC(1) connector to PC Sound Card configured for PSK31; BPSK, and QPSK and other digital modes. Please note that this interface utilizes transformer coupling, and optocoupler Phototransistor for software control of PTT.
ICOM Models IC-275, IC-375, IC-575, IC-707, IC-721, IC-723, IC-725, IC-726, IC-728, IC-729, IC-732, IC-735, IC-736, IC-737, IC-737A, IC-738, IC-746, IC-751, IC-756, IC-760, IC-761, IC-765, IC-775DSP, IC-781, IC-820, IC-970 etc..
(2) ICOM Transceivers with 13 pin DIN data I/O port... for ICOM HF/VHF Transceivers; This circuit employs an Opto-Coupler (phototransistor), and transformer coupling to isolate the Sound Card from the transceiver (RF). ICOM HF / VHF Transceivers with 13 pin DIN (ACC) connector to PC Sound Card configured for PSK31 and SSTV modes. NOTE; This interface utilizes the serial comport RTS signal to enable Push-To-Talk (PTT)
(3) For the ICOM, IC-706, and IC-706MKII, The most popular of all IC-706 PSK, SSTV and PacketBlasterTM© interfaces.
This interface also works with the IC-751, and similar ICOM HF/VHF Transceivers equipped with 13 pin DIN ''ACC(1)'' connector to PC Sound Card configured forPSK31, and other digital modes. NOTE that this interface also works with the new ''PacketBlaster'' Sound Blaster compatible sound card program (No need for a TNC). This this interface utilizes transformer coupling and enables software PTT execution via serial comport RTS signal. ICOM models 706 etc...
(4) ICOM IC-706, 207, 281, 381, 481, 2000, 2350, 2340, and similar ICOM HF, VHF, and UHF transceivers. This PSK31/SSTV interface uses the 4N25/PS2601, Opto-Coupler (phototransistor), and transformer coupling to isolate the Sound Card from the transceiver (RF). ICOM HF/VHF transceivers with 8 pin RJ-45 microphone connector to PC Sound Card for PSK31 mode. Read the (C*) notes on diagram.
(5) ICOM IC-706, 207, 281, 381, 481, 2000, 2350, 2340, and similar ICOM HF, VHF, and UHF transceivers. This PSK31/SSTV interface uses the 4N25/PS2601, Opto-Coupler (phototransistor), and transformer coupling to isolate the Sound Card from the transceiver (RF). ICOM HF/VHF transceivers with 8 pin RJ-45 microphone connector to PC Sound Card for PSK31 mode. Read the (C*) notes on diagram.
(6) ICOM IC-730 and similar HF-VHF Transceivers with 8 pin screw-type standard microphone connector to PC Sound Card configured for PSK31, and other digital modes. NOTE notice that this interface utilizes transformer coupling and enables PTT execution via serial comport RTS signal.
ICOM models IC-120, IC-1201, IC-1271, IC-1275, IC-228, IC-22U, IC2400, IC-25, IC-2500, IC-255, IC-260, IC-27, IC-271, IC-275, IC-28, IC-290, IC-3200, IC-3210, IC-3220, IC-375, IC-37A, IC-38A, IC-45, IC-47, IC-471, IC-475, IC-48, IC-490, IC-505, IC-551, IC-560, IC-575, IC-707, IC-720, IC-725, IC-726, IC-728, IC-729, IC-730, IC-735, IC-737, IC-740, IC-745, IC-751, IC-761, IC-765, IC-781, IC-901, etc... Be sure to read note on drawing regarding bias blocking cap. See Note (*C).
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