Re: (meteorobs) A really weird thing is happening to my radio listening!

To: meteorobs@atmob.org
Subject: Re: (meteorobs) A really weird thing is happening to my radio listening!
From: Tony Beresford <aberesford@iprimus.com.au>
Date: Thu, 14 Nov 2002 17:32:00 +1030
Delivered-To: meteorobs-mhonarc@galaxy.atmob.org
Delivered-To: meteorobs@atmob.org
In-Reply-To: <3DD3184A.F122E769@chebucto.nsdot ca>
Reply-To: meteorobs@atmob.org
Sender: owner-meteorobs@atmob.org

At 13:58 14/11/02, you wrote:
>Hi All:
>
> Well, I listen to meteors with an Icom R10 radio with a dipole antenna
>and a cavity filter to eliminate any unwanted noise. 
>
> Now, I monitor on CW mode but was getting a hard tone, by accident I found
>the problem, it was my 900 MHz telephone!! when I unpluged the adapter the
>tone went and I heard meteors on CW ok.
>
> NOW HERE's the interesting part. When I plug the adaptor in the tone
>comes back BUT I can detect meteors on the AM mode! If I disconnect
>the adaptor I loose them onthe AM mode!
Not really Mike, The 900Mhz signal or a subharmonic is simply acting like
the BFO you use in CW Mode. Of course in CW Mode, the interfering carrier and the
BFO beat to provide a continuous tone which masks the meteor reflections.
Tony Beresford


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References:

(meteorobs) A really weird thing is happening to my radio listening!

From: Mike Boschat <aa063@chebucto.nsdot ca>

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