Re: 1680 Unid

[Bruce Portzer <bportzer@xxxxxxxx>]

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Paul Ormandy wrote:
> 
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> >Hello,Re:the 1680khz.snafu,there is however a XEXXX,840 kkz in Tamazula
> >Mexico,which would generate a harmonic on 1680khz.(840+840=1680).Thats
> >close to XEXX,but not quite the same thing.This whole thing is getting
> >confusing.Whats on 2840 is maybe XEXX,1240 khz+1240 =2840khz.Does any of
> >this help?,And the last note I saw threw in 710khz into the mix as
> >well,counting its
> >harmonics.....710+710=1420.1420+1420=2840khz..........are you all
> >following me?...Tom
> 
> XEXXX 840, 2nd harmonic of 1680 sounds better and their location on
> the West Coast would fit in with propagation at that time too...didn't think
> it was a harmonic from XEXX 1420, could have been a mixing product or spur
> though.
> 
> 73s Paul

One plausible explanation is a mixing product between XEXX-1420 and 
another Tijuana station, XEBG-1550. The product 2x1550-1420 would wind up 
on 1680