[amsat-bb] Re: Help with 75 mtr Qrn problem

[Greg D]

Hi Dave,

If the noise came and went sharply (like someone turned something off 
for a week), and "man made" sounding, perhaps one of your neighbors put 
up a solar power array?  Lots of diodes and the power inverter running 
during the day...

Just a thought,

Greg  KO6TH


Dave Larsen PhD wrote:
> I have called PG&E and the guy came out with a 430 Rx with a beam 
> saying it's not
> there problem  - humm  - The Lev stays at a S-7 and then when sun 
> comes up it goes to a S-9 20 over
>
> both Ants were fine for 2 years .. then the QRN .. it did go away for 
> about 1 week now
> back for 1 month
>
> Tnx for all responce .
>
> Dave
>
> ----- Original Message ----- From: "K4FEG" <K4FEG at K4FEG.COM>
> To: "Dave Larsen PhD" <doc at volcano.net>
> Sent: Friday, August 02, 2013 3:50 PM
> Subject: Re: [amsat-bb] Help with 75 mtr Qrn problem
>
>
>> On 8/2/2013 05:23 PM, Dave Larsen PhD wrote:
>>> I have 2 dipoles up at 60+ ft - one set running East-West other 
>>> North South .. From 2.6 to 5 Megs I
>>> have a S-7 Qrn lev at 4 Am .. buy noon I have a 10-20 over QRN Lev 
>>> .. I live on 10  acres and have
>>> turned off main power to house and still have QRN .. so not coming 
>>> from anything in house .. This one
>>> has me stumped .. 6 moths ago my Qrn was a S-2 .. waiting for a G6 
>>> radio to try and track this down
>>> but does anybody else have any idea's ?
>>>
>>> Tnx
>>>
>>> Dave
>>> N6CO
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>> there is a possibility that you have a nearby electrical transformer 
>> that has a corroded connection on it, these connections can be a 
>> major source of noise and they will come and go with changes in 
>> humidity or precipitation. will it suddenly stop at times are is it a 
>> fairly constant level?
>>
>> your local utility company can find and repair these connections but 
>> they need a better idea of the direction it is from your QTH.
>>
>> Those are my thoughts on your problem
>> Good Luck
>> Frank;
>> K4FEG 
>
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