Pete
I bought this 8718 as a parts unit and now have it working, somewhat. The
can that covers the mixer is gone, someone was messing inside but the manual
has it as M9D made by WJ I think. I wish I could find a schematic on it
becasue it might be repairable, kind of small but I've looked at it with my
6-50 stereo zoom microscope and might be able to fix it if I knew what
diodes it used. Without a diagram I'm afraid that I might bugger something.
When I attach a 5 foot piece of wire to one the diodes the radio picks up
all the AM stations and no problem with WWV or 20 meters..Haven't done any
other testing. I was told that the SRA-3H was a good sub and took their
word for it. If something else is closer or better I'd sure like to know. I
can't find any reference in the manual to the output level of the first LO
but it covers ~ 43 to 73 MHz.

73
Hank WD5JFR
"Pete KE9OA" wrote in message
. ..
The '3 series of mixer from MCL are good down to about 25kHz. Good
performance can be expected another octave down from there. Does the
synthesizer in your WJ receiver provide +17dBm of LO injection? The mixer
you ordered is a Level 17 mixer. The MCL website does have the pinout for
this device. I like the '3 series, since the SSB conversion loss is in the
4.75dB range vs other series, which have conversion loss in the 6.5dB
range. This is a very good mixer. Now, which mixer is your WJ receiver
using? Some of the WJ units used a mixer that had a pinout similar to
MCL's GRA-3.

Pete

"AndyS" wrote in message
ups.com...

Henry Kolesnik wrote:.. Any tips on how to
determine the leads and test for performance appreciated.
tnx

Hank WD5JFR

Andy writes:
MSL normally has very good information in their catalogs regarding
the connectors, frequency range, and performance of their mixers.
If you don't have their catalogs lying around, there are two more
possibilities... Do a google to find their website and they may have
everything on online. Otherwise, call their customer service line and

tell them the info you need.... In my previous life, they gave
excellent
support...

Good luck,

Andy W4OAH, in Eureka, Texas