Lucky find Rik !
Nothing like a bit of home made noise to jam the rx ! , I found , last
year, one of these long life bulbs, produced a line spectra across 500 and a
very old cable run in the house was noisy under load ...
G ..
--------------------------------------------------
From: "Rik Strobbe" <[email protected]>
Sent: Thursday, August 28, 2008 8:33 AM
To: <[email protected]>
Subject: Re: LF: QRV on 500
At 20:08 27/08/2008, you wrote:
Nice to see you have the Good and the Bad ,
That just leaves us with the 'Ugly' .... !
You using the main ae for rx ? perhaps a small loop would be better ?
Yes, and normally this is no problem (a 20dB attenuator takes care of all
IM problems). I have a small portable loop that can be tuned to 500kHz and
QRM is as band as on the big antenna unless I null it out with the loop.
Unfortunately the null is east-west so when nulling out the QRM source I
null out south UK too ...
Last night I took a portable AM radio to locate the QRM source and found
out that it was a 12V dc "electronic transformer", also running quite hot.
It has been there also in May (when I didn't have that QRM) so it must
have gone faulty some way since then. I am going to replace it by a good
old fashioned 12V dc power supply.
73, Rik
Disclaimer: http://www.kuleuven.be/cwis/email_disclaimer.htm
No virus found in this incoming message.
Checked by AVG - http://www.avg.com Version: 8.0.138 / Virus Database:
270.6.9/1637 - Release Date: 8/27/2008 07:01
|
