[AMRadio] Sp-600 JX-11 Diversity?

rbethman rbethman at comcast.net
Tue Feb 19 16:25:04 EST 2008

As I replied direct to John with Northern pics,

The SP-600s done by Northern do NOT have the red knobs.  There is a VERY 
distinctive tag affixed to the upper right corner, AND there are NO 
crystal units or switches.

AND they weren't JX types - just "J 11" as the name/SN plate on top of 
the turret assembly shows.


John Flood wrote:
> Greetings Wise ones!
> This weekend a SP-600 JX-11 followed me home (when I was young it used to be kittens and puppies with the odd reptile or amphibian mixed in.) along with an assortment dust, dirt, and seed shells from barn storage but at least the beasties didn't get into the undersides!    In any event this is a diversity version.  I'm trying to I.D. who did the work but I think that it was done by Northern Radio.  I say this as the label details for the int/ext. M.O. and int/ext AGC/BFO controls look identical to those on a National NC-183D/R Northern diversity version that had followed me home some years earlier.  I was wondering if the factory did a diversity version of the JX-11?  If so what did the front panel look like?  This unit has no Xtal freq control and in addition to an IF output on the chassis, there is a second IF out "in a can" with a SO-239 connector and it is attached topside at the rear of the radio.  Sound like a Northern job to youz guyz?
> <snip>

> John Flood

Bob Bethman/NØDGN/BC-610/Northern Radio 
SP-600 Manassas, VA - MultiBand Dipoles

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