Open Interface FSK configuration

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# Tumbler switch DTR/RTS on [back side|https://remoteqth.com/wiki/index.php?page=Open+interface#Back_side] switch to '''ON''' # Download [EXTFSK|https://hamsoft.ca/pages/mmtty/ext-fsk.php] and copy to you MMTTY directory # in MMTTY setup select PTT&FSK Port as '''EXTFSK''' [https://remoteqth.com/img/wiki-open-interface-win-3.jpg] # Misc tab settings TX Port select '''COM-TxD(FSK)''' [https://remoteqth.com/img/wiki-open-interface-win-4.jpg] # and USB port options select '''C''' {br} [https://remoteqth.com/img/wiki-open-interface-win-5.jpg] # After press OK in setup open automaticaly EXTFSK window. Select '''FSK to DTR''' and '''PTT to RTS''' {br}[https://remoteqth.com/img/wiki-open-interface-win-6.jpg]