Michael,
see answers below:
Does the Sidetone frequency setting for CW in Allard's code just adjust
the audible sidetone or does the TX Offset for CW actually
track this sidetone setting as well ? ??If not, ??this would be a really
nice enhancement.
This is already implemented. Changing the sidetone frequency not only
affects the audible sidetone but the actual RX offset (not TX offset!) as
well.
I have an ??SotaBeams DSP filter module which has narrow SSB and CW
filtering but the CW filter passband is centered
on 600 Hz and the skirts are quite steep so ideally I want to be listening
to a 600 Hz signal (i.e. have a 600 Hz TX offset) and??
have a matching sidetone frequency so that neither is attenuated by the
filter. ??I guess if the current TX offset is fixed
to some other value I can??just change it to 600 hz and recompile the
sketch.??
That wouldn't be neccessary. Just change the sidetone frequency to 600Hz
in the SETTINGS menu.
Extra note: I'm currently working on v1.15 featuring true RIT control that
allows you to do fine tuning during RX while keeping the TX frequency the
same. This may be useful especially for CW. To be released shortly.
A second question. From what I can see the A1 (key line) on Raduino
connector P1 is grounded to send CW. ??
I am wondering if??perhaps it might be a good idea to install a ??zener
diode to ground on the key line to help protect the Arduino from ESD ????
(I have seen this done in other kits).??
Extra protection wouldn't do any harm. A zener diode might work, perhaps
there are better methods, haven't thought about this yet.
Allard PE1NWL