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Fw: QRM on AO51



----- Original Message ----- 
From: "Mike Hooles" <Mikehooles@BTInternet.com>
To: "Patrick Green" <pagreen@gmail.com>
Sent: Thursday, February 24, 2005 9:01 AM
Subject: Re: [amsat-bb] QRM on AO51


> Hi Patrick,
> I have never had problems accessing SO50, AO27, nor UO14 when it was 
> working.
> I was coming to the conclusion that there was something different about 
> the AO51 receiver, but there could be very high levels of qrm swamping the 
> receiver.
> Does it only happen over Europe, or is it over all continents? If the 
> latter we are either on an unfortunate frequency, or there is something 
> different about the receiver.
> If it does not occur on low power days on the same frequency, then it is 
> probably us overloading the front end. If it is clear on a different 
> uplink frequency, then maybe it is the frequency that we have chosen. It 
> could also be that the ctcss passband is too tight,
>
> Regards
> Mike G3LGR
> ----- Original Message ----- 
> From: "Patrick Green" <pagreen@gmail.com>
> To: "Mike Hooles" <Mikehooles@btinternet.com>
> Cc: "AMSAT" <amsat-bb@amsat.org>
> Sent: Thursday, February 24, 2005 1:40 AM
> Subject: Re: [amsat-bb] QRM on AO51
>
>
>> Do you guys have these same problems on AO-27/SO-50?  is 145.92 the 
>> problem?
>>
>> 73 de Pat --- KA9SCF.
>>
>>
>> On Wed, 23 Feb 2005 11:02:28 -0000, Mike Hooles
>> <Mikehooles@btinternet.com> wrote:
>>> I too find it difficult to get into AO51. I wondered whether my level of
>>> CTCSS was too low, but I understand now that it was unwanted QRM.
>>> The difference between SO50 and AO51 regarding access for me is very
>>> pronounced.
>>> If it is just QRM, then mayebe on future FM birds we should stick to the
>>> AO27/SO50 uplink frequency for 2metre access,
>>> Regards
>>> Mike G3LGR
>>> ----
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----
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