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Re: LF: Broad signal (noise?) on 137.000KHz

To: [email protected]
Subject: Re: LF: Broad signal (noise?) on 137.000KHz
From: "Rob, M0DTS" <[email protected]>
Date: Sun, 26 Feb 2012 23:13:13 +0000
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Alan,

Thanks for the information.. I've only been back listening 136 for a month or so and i had not noticed it until last night, last time i was on in 2007 i don't think i heard it either so must be varied in it's operation. The 40kW is doing well anyway, s-meter stuck at s7 here... gmsk sounds bit like noise really ;-)

Rob
M0DTS

On 26/02/2012 22:29, ALAN MELIA wrote:
Hi Rob that is not noise that is one of the oldest residents of the band
:-)) It is the Canadian Naval station at Newport Corner nr Halifax Nova 
Scotia.It is nor unusual for it tobe 30 to 40dB over the noise level. Itis a 
good indication of propagation conditions as was the stimulus for the first TA 
attempts on 137kHz.
The station is transmitting at about 40kW ERP from a new but barely used Harris 
TX the modulation is most likely GMSK and it is capable of multichannel 
independent sideband operaton. It generally is used for submarine comms., but 
has been very quiet in recent years.

Alan G3NYK


--- On Sun, 26/2/12, Rob, M0DTS<[email protected]>  wrote:

From: Rob, M0DTS<[email protected]>
Subject: LF: Broad signal (noise?) on 137.000KHz
To: [email protected]
Date: Sunday, 26 February, 2012, 22:09
Hi All,
I'm getting a broad signal at 137KHz on evenings with
gradual increase in strength as the evening goes on plus
some qsb.
It seems to be very stable centered on 137.000 and is 300Hz
wide, see the screen grab below.

The same signal is received about 17km away too by another
station at similar strength so wondered if anyone else hears
it?

http://www.m0dts.co.uk/files/capt1202262156.jpg


Rob
M0DTS






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