Their measurements show the field strength is above the spec. but I suspect
this does not help if you were relying on a much stronger signal that NPL
requested from from Rugby to overcome screening or local noises. I am quite
surprised in a way how well it does work. I suppose 60kHz is very close to 4
times 15.625kHz for a simple receiver.
The other poblem is a lot of modern wide screen TVs have SMPSUs that run in
the 30kHz range and emit quite a big signal from the aerial coax braid.
Cheers de Alan G3NYK
----- Original Message -----
From: John W Gould <[email protected]>
To: <[email protected]>
Sent: 19 May 2007 09:36
Subject: LF: RE: Re: Rugby - Anthorn
I didn't take much interest in this thread until I realised that my MSF
clock was free-wheeling. I've had to find a new position and orientation
for it in order for it to lock onto the Anthorn signal. This seems to be
rather difficult and intermittent. So much for the claim of a good coverage
across the UK.
My QTH is about 30 miles south of Rugby (so no trouble there) but I guess
180 - 200 miles from Anthorn. I can see a "dissaffected from Newport
Pagnell" letter being drafted before too long to the operator.
73 John, G3WKL
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Alberto di Bene
Sent: 17 May 2007 18:03
To: LF Mailing List
Cc: Alan Melia
Subject: LF: Re: Rugby - Anthorn
Hi Alan,
I have measured the response of the S-meter of my R-75 at 60 kHz, using a
W&G level generator and a Hatfield
attenuator I had bought on eBay some time ago.
At 60 kHz, you need a signal of -67 dBm to have an indication of S9 on the
receiver. To bring it down to S3, I had to
insert using the Hatfield attenuator 17 dB of attenuation. So much for the
linearity of S-meters...
So, for what this test is worth, apparently at my location Anthorn seems to
be about 17 dB weaker than Rugby. The test
is not much scientific, as I didn't take note in the past of the time of the
day when I took the S9 reading, nor of its
repeatability, but as a ballpark indication maybe it can say something.
73 Alberto I2PHD
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