[RTTY] Some tips for using N1MM Logger in the 75 baud contest

[Bill, W6WRT]

This coming Sunday the BARTG 75 baud contest will be run. It is fun to
watch the macros zip across the screen, but setup can be a little bit
tricky. 

If you are using N1MM Logger with MMTTY in FSK mode, here are some
tips I worked out during the last 75 baud contest. By following these
steps you will avoid having MMTTY unintentionally revert back to 45
baud and also prevent AFC from causing your TX and RX frequencies to
drift apart. 

These tips only apply if you are using FSK. I don't use AFSK and I'm
not sure what changes are needed for that other than changing the baud
rate per step 1. Perhaps someone can help out with that?



1. To change MMTTY to 75 baud, go to Setup>Options>Decode and select
75 baud. On the MMTTY window, do not press the HAM button during the
contest or it will revert back to 45 baud. 

2. On N1MM Logger's Digital Interface window, under Setup>Settings,
the box that says (MMTTY)Send Ham Default on Run to S&P Change should
be unchecked, otherwise MMTTY will revert to 45 baud when changing to
S&P mode. 

3. As a result of doing step 2, you should also do this step to
prevent AFC from causing your TX and RX frequencies to drift apart and
not be corrected on run change. On the Digital Interface window, under
Setup>Settings, the box that says (MMTTY-MMVARI)Turn AFC On/Off After
Run Change should be unchecked. After doing this, go to the MMTTY
window and be sure the AFC button is not pressed and that MARK is set
to 2125 Hz or whatever default tone you are using. 

4. After the contest, to return MMTTY to 75 baud, on the MMTTY window,
click the HAM button. Also, in the Digital Interface window, re-check
the two boxes from steps 2 and 3.

Hope you find this useful. Any further tips for 75 baud operation
would be appreciated. 

Bill, W6WRT