[TenTec] Corsair mpu replacement board - keyer speed

[Steve Hunt]

Folks,

The keyer speed on my replacement Corsair mpu board is directly related 
to the frequency of the keyer clock oscillator on the audio processor 
board, which in turn is set by the front panel Speed control. On my 
Corsair, that oscillator has a Fmax/Fmin ratio of 2.58:1, so that is the 
range of keyer speeds I get. The present keyer PIC firmware (V1_1) sets 
that 2.58:1 range as 11wpm to 28wpm which suits my CW ability :)

I have been asked if that range could be changed. The answer is "yes", 
within the constraint that the ratio max/min must be 2.58:1. For example 
it could easily be changed to 15wpm/39wpm.

I'm keen not to have a proliferation of firmware versions around - Jerry 
is probably even more keen! But I would be happy to change the speed 
range *once* to something different if there is a consensus of what that 
range should be.

I hope I've asked the question in time for Jerry to incorporate any 
change into his PIC programming schedule.

Anyone who is comfortable doing their own PIC programming could 
customize the speed for their personal requirements - it's just a single 
byte change to the Hex object code which I'm happy to outline if there 
is any interest.

73,
Steve G3TXQ