Subject: RE: LF: Rugby lines Content-Type: text/html; charset=windows-1252 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false X-PN-SpamFiltered: by PlusNet MXCore (v2.00) Content-transfer-encoding: 8bit

David

That was done by measuring the "strength" of the tone when analysing the wav files with Spectrum Lab. The receiver AGC made the peak noise level the same I could read off the difference in tone level (in a tiny bandwidth) .

The S meter on the receiver has gone from about S3 to S7 which would indicate a much worse degredation but who believes S meters?

I would very much doubt that there's any effect on LW BC band, that extra 20kHz will make a big difference.

Dave.

From: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blacksheep.org] On Behalf Of G0MRF@aol.com
Sent: 12 July 2005 21:00
To: rsgb_lf_group@blacksheep.org
Subject: Re: LF: Rugby lines

In a message dated 12/07/2005 16:43:58 GMT Standard Time, dave@picks.force9.co.uk writes:

Note to David:
I have put the aerial back up and made the comparison recording and it
appears that the background is about 13dB higher here with Rubgy on. The
"S6" CW signal is now a good deal more difficult to copy! I will send the
recording is you need them.

73 and clackety-clack from Dave G3YXM.

Thanks Dave.

Only 13dB is quite a surprise. That's about 2 S points up from the background. Are you measuring in a reasonable bandwidth. 500Hz or above.

Apparently the output at 136kHz is only 48dB down on level at 100kHz.

Is there any sign of interference to 153 or any LF broadcaster?

Thanks

David