Perhaps you remember this:
On Feb 17, 2008, at 1:58 PM, w2bvh wrote:
These measurements were done with the new K2 firmware just recently
installed: v2.04P/1.09.
1. In CW mode, 8R Hold= normal with t-r delay set to 0.02 sec
a) 8R goes low and rf starts rising 17ms +/- 1ms later
b) RF starts declining and 8R rises 5ms later. Please note this is
a normal 90%-10% fall time measurement. RF is at 100% output 5ms
before the rising edge of 8R and declines exponentially from
that point in time. At the rising edge of 8R the rf is essentially 0.
2. In CW mode, 8R Hold= normal with t-r delay set to 1.0 sec
a) measurements exactly as above. So I assume that in this set-
up t-r delay means speaker un-mute delay.
3. In CW mode, 8RHold=hold with t-r delay set to 0.10 sec
a) 8R goes low and rf starts rising 18ms later. Same as above
b) RF starts declining and 8R rises 0.10 sec later
c) I tried with t-r delay 0f 0.05sec and for that value RF starts
declining and 8R rises 0.05 sec later.
4. In SSB mode with a constant audio tone injected int to the mic
connector and with PTT keyed using a hand key connected to the key
jack on the back apron, I get the following result:
a) 8R goes low and rf starts rising 18ms later
b) RF starts declining and 8R rises 10 ms later
c) these measurements are independent of the the value of t-r
value and 8R Hold value.
Conclusion is 8R Hold=hold causes 8R to rise t-r delay seconds after
rf starts to decline in CW mode. Otherwise the 8R line's timing is
fixed and as described above.
Question: what happens in SSB mode with VOX instead of PTT as the
audio tone is keyed on and off?
Bill Coleman, AA4LR, PP-ASEL Mail: [EMAIL PROTECTED]
Quote: "Not within a thousand years will man ever fly!"
-- Wilbur Wright, 1901
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