[ACARS] REQ:- USA FREQ 108.850

[Dean]

I reported it, and I figured it out, thanks to Dick...turns out one of the 
IFs of the radio in question (an old PRO-2030, which explains a lot) was 
10.8, not 10.7, so that maths out to 130.45, a common ACARS frequency 
around these parts.



At 06:16 PM 2/11/2005 Friday, R J Ware wrote:

>----- Original Message -----
>From: "keith d" <scanner at ntlworld.com>
>To: <ACARS at mailman.qth.net>
>Sent: Friday, February 11, 2005 11:09 PM
>Subject: [ACARS] REQ:- USA FREQ 108.850
>
> > Its been reported on the acarsd yahoo list
> >
> > that freq :- 108.850 is producing quite a large
> > amount of acars decodes
> >
> > Anyone got any more to add
>
>Just a thought.....
>
>If one of the I.F (intermediate freqs) of a scanning radio is 10.7Mhz, 
>(which is a
>common frequency to chose), a down-market scanner, which could well have 
>an input
>filter as wide as a barn door, MAY pick up transmissions on a frequency 
>which is
>the NORMAL frequency plus and/or minus TWICE the intermediate frequency.
>
>108.85 + 10.7 + 10.7  = 130.25 Mcs
>
>Are there any transmisions on THAT frequency in the affected area(s) ?
>
>Rgds
>Dick
>
>(ex Marconi Marine Radio & Electronics Officer 1966 - 1988)
>---
>
>
>
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