I am not sure how to do the selectable sideband function, but I can figure
it out, I will sure throw that function in. I just ordered some samples of
the high speed op-amp that is used for squaring up the signal to the phase
detector. They should be in on Wednesday. I am doing two versions of the
detector...........one of them will use an AD op-amp, while the other will
use a Burr-Brown device. This sync detector will have two ceramic bandpass
filters in the signal chain.........one of them will be between the mixer
output and the I.F. input, while the other will be between the I.F. output
and the demodulator input. It shoud be a low-noise system. AD specifies this
configuration as having an MDS of -90dBm. I will be feeding in a -20dBm
signal, so the earlier stages of the receiver will have more than enough
takeover gain. If there is enough interest in the circuit design, I will
post the AD application note up on my website.
Thanks for encouragement!

Pete

starman wrote in message
...
Pete KE9OA wrote:

...my goal is to design a sync detector that is better than anything
else
on the market, regardless of price. Hopefully, I will be able to do it.

I appreciate you're striving for the best Pete but I think most everyone
on this group would be very satisfied if the sync' works like the R8B or
AOR-7030.

BTW- The sync' should be double sideband in addition to sideband
selectable.


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