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Re: LF: 500

To: [email protected]
Subject: Re: LF: 500
From: Rik Strobbe <[email protected]>
Date: Mon, 03 Nov 2008 15:50:36 +0100
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Hello Pete,

I found out that 90% of the noise on 500kHz came from inside my own house.
A lot of electronics is running of switched PSU's and you need just one of these oscillating near 500 kHz to get a lot of noise. I took a small portable AM radio (tuned to the lowest end of the medium wave band = abt. 520kHz) to locate the noise sources. Use the ferrite antenna to take null bearings. After replacing a couple of 12V switched PSU's by good old linear ones noise was down by 10's of dB. Another source of noise are energy saving lamps. You can locate them the same way.

73, Rik  ON7YD - OR7T


Quoting M0FMT <[email protected]>:

Hi Mal and LF
 
I would like to be on for two way QSO's however its the old story here I have a high noise level and am not hearing any thing other than local signals.
 
I was on the Suffolk coast for this years holiday. I only had a Kenwood TS50 and a 40 metre dipole up. I was hearing just about every thing on 500kc/s. Its not as though I live in a high density area apart from a neighbour either side the nearest other is about 1/4mile away but I do have 11kV at the bottom of the garden which to date has not been a problem. So I suspect an insulator but the noise is not general it is not affecting HF at the moment.
 
I have an 8 foot Octagon tuneable and rotatable loop that I am playing with at the moment but so far no real improvement.
 
Sorry for the tale of woe but we are working on the problem.
 
Chris XIZ has suggested X band so I may try that shortly.
 
73 petefmt
 

--- On Mon, 3/11/08, mal hamilton <[email protected]> wrote:

From: mal hamilton <[email protected]>
Subject: Re: LF: 500
To: [email protected]
Date: Monday, 3 November, 2008, 11:32 AM





Peter
Listening on 500 recently it looks like the GAS has gone out.
Mal/g3kev
 

----- Original Message -----
From: M0FMT
To: [email protected]
Sent: Monday, November 03, 2008 11:10 AM
Subject: Re: LF: 500






 
 
Nice one Warren .... :))
 
Sorry Mal.
 
73 Petefmt

--- On Sat, 1/11/08, Warren Ziegler <[email protected]> wrote:

From: Warren Ziegler <[email protected]>
Subject: Re: LF: 500
To: [email protected]
Date: Saturday, 1 November, 2008, 7:24 PM

Mal,
     You have a gas powered TX?
73 K2ORS


On Sat, Nov 1, 2008 at 2:55 PM, mal hamilton <[email protected]>
wrote:
Hi
Is there anyone listening on 500 ? or am I just burning up gas !! now CQ
for
a qso on 502.6
de g3kev





--
73 Warren K2ORS
                WD2XGJ
                WD2XSH/23
                WE2XEB/2
                WE2XGR/1







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