Hi Don,
Thanks for the combined brain power! I have a plan for testing if it
ever gets that far. I am just trying to see if the K3 receiver recovers
sufficiently fast in a general sort of way first.
I believe I could look at RF levels on the IF while transmitting, (using
a different transmitter and a storage scope to look at the K3 IF), then
just drop the carrier while still looking at the levels with that scope.
When I see signals return to the IF I have the recovery time of the
receiver.
I am just trying to skip that step hoping someone actually knows the
recovery time of the receiver, as opposed to actual testing.
If the K3 is even close, I will set up test jig for it, if not, then
I'll look for a better way.
Thanks again for your thoughts here!
73s and thanks,
Dave (NK7Z)
https://www.nk7z.net
Award Manager, 30MDG Grid Contest
ARRL Technical Specialist
ARRL Volunteer Examiner
ARRL OOC for Oregon
On 1/13/19 11:53 AM, Don Wilhelm wrote:
Dave,
I am trying to think of how you might test it.
The best I can think of is to listen to both a noise source and an XG3
sending a CW string of dots. Increase the speed of the CW sent by the
XG3 until you can no longer hear the noise source between dits.
Then either calculate the off times for the dits or measure it on an
oscilloscope.
73,
Don W3FPR
On 1/13/2019 2:07 PM, Dave Cole (NK7Z) wrote:
Hi again Scott,
Thank you for your answer, but I am not being clear.
Not during break in, just sitting there in receive... If the radio is
hit with an S9+ signal, how long after the S9+ signal terminates
before the K3 receiver recovers enough to show an weak signal on the
IF... No T/R happening, just sitting there in receive.
You are close to what I am looking for... I am investigating the
possibility of using the K3 as the receiver portion in a homebrew
bistatic radar setup running in the HF spectrum.
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