Re: [TenTec] LW receiver

[Robert & Linda McGraw K4TAX <RMcGraw@Blomand.Net>]

Mixing products of 1160 minus 900 = 260

or

1160 mixed with 1420 = 260 kHz

in these cases, I'd expect to hear audio of both stations at 260.


Another combination is the 2nd harmonic of the local oscillator minus the 
455 kHz IF = 250 kHz.
Just do a bit of math, consider any BC station in the area and you'll find 
the combination.
73
Bob, K4TAX


----- Original Message ----- 
From: "Ron" <ron@morell.us>
To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Cc: <CATFISHTWO@aol.com>
Sent: Sunday, January 01, 2006 7:44 PM
Subject: Re: [TenTec] LW receiver


> Tom,
> Ineresting idea of two AM broadcast stations producing the signal at 260
> KHz, but as I did not hear any signal but the 1160 KHz station there, I
> think it is probably a product of the IF mixer.  I was using the Sub
> Receiver.  It was a 10 over S-9 signal at 260 KHz and a 40 over S-9 signal
> at 1160 KHz.  When I get time, and conditions are similiar and I can tune 
> it
> in, I'll hook up my old Tuned Receiver Front End Regenerative (RAK-8)
> receiver and see what I hear at 260 KHz.  No IF in that old boat anchor.
>
> Thanks for you reply.
> Ron KA7U
>
> -----Original Message-----
> From: tentec-bounces@contesting.com
> [mailto:tentec-bounces@contesting.com]On Behalf Of CATFISHTWO@aol.com
> Sent: Saturday, December 31, 2005 1:56 PM
> To: tentec@contesting.com
> Subject: Re: [TenTec] LW receiver
>
>
>
> In a message dated 12/31/2005 10:31:52 A.M. Pacific Standard Time,
> ron@morell.us writes:
>
> Listening on 260 KHz with my ORION II tonight and heard KSL5 radio in 
> Utah
> which broadcasts on 1160 KHz.  That would be 900 KHz below their 
> broadcast
> frequency.  I'm curious about this and wonder what exactly  I'm listening
> to.
>
> Besides, it is time to talk about something besides  headphones... :)
> Ron KA7U
>
>
>
>
>
>
> I had similar a few weeks ago, and it is possibly "your station" and a
> second broadcast station near by proudcing a ifference frequency between 
> the
> 2
> stations and the rig is picking up the combined signal and detecting it at
> .260
>
> it is not a harmonic, but could be a difference freq if two strong am
> stations are close by.
>
> tom N6AJR
> _______________________________________________
> TenTec mailing list
> TenTec@contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
>
> _______________________________________________
> TenTec mailing list
> TenTec@contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec