[TenTec] OMNI VI Chirp Report

Paul Christensen w9ac at arrl.net
Tue Feb 19 07:13:56 EST 2008


> To answer Carl's question, there is a problem with keying, but I would not 
> call it chirp. I do not hear a change in frequency across the cw dot or 
> dash. I do not like the sound of what I hear.

Joe,

I am not sure how much effort you want to put into this after the changing 
EPROM chips.  Between now and then you can perform two simple tests...

First, change mode to FSK and alternate between CW while transmitting into a 
load.  Ideally, you should not hear a qualitative difference in the 
transmitted tone when listening to an external Rx.  But, you may find that 
FSK sounds better.

Next, bypass the 2.4 kHz @ 9MHz filter with bare wire and conduct the same 
experiment.  If you hear changes for the better, then odds are that 
placement of the CW TX BFO is on, or near the knee of the 2.4 kHz filter.

Paul, W9AC



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