[Premium-Rx] WJ-8718/8716 spectrum monitor outputs

[Terry O'Laughlin]

I have received many requests for information on spectrum monitor outputs 
for the WJ-8718, WJ-8716 and AN/URR-74(V) series of premium receivers.  The 
information is now on my website at:

http://watkins-johnson.terryo.org/WJ-Receivers/WJ-871x-SMO.htm

I took my WJ-8716/MFP front end convertor apart, which has a 100 kHz wide 
output centered on 10.7 MHz.  I photographed it and created the webpage.  I 
also scanned the 455 kHz SMO option manual for the series.  It is available 
for download.

The stock SMO option is a 30 kHz wide centered on 455 kHz.  It turns out 
that all the information you need (schematics, parts layout, PCB layout) on 
the 10.7 MHz spectrum monitor output is in the stock SMO option manual.  It 
should be a relatively easy thing to do for most technically savvy folks.

73
Terry O'
http://watkins-johnson.terryo.org