http://www.w1hkj.com/alpha/fldigi/
NULL modem
* Added NULL modem, a device which does not receive but can enable
transmit.
- used as modem type before !QSY, !GOFREQ etc
- used with <DTMF... to transmit DTMF tones and no other modem
audio stream
* Modified IDLE test in get_tx_char
Please try the following macro (suggest transmitting into a dummy load :-) )
Label it "ARRL" since it it similar to an ARRL digital mode broadcast.
Mark and copy the text and then paste it into the macro editor text box.
<MODEM:NULL>
<!QSY:3594:915>
<!MODEM:RTTY:170:45.45:5><!IDLE:2>
ryryryryryryryryryryryry
<!MODEM:NULL><!GOFREQ:1000><!IDLE:5><!MODEM:BPSK31><!IDLE:2>
The quick red fox jumped over the lazy brown dog.
de <MYCALL> k
<TX><RX>
73, Dave, W1HKJ
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