Return to KLUBNL.PL main page

rsgb_lf_group
[Top] [All Lists]
<prev [Date] next>
[Advanced]
 <prev [Thread] next>

Re: LF: RE: 137kHz QRSS30 beaconing still - reports appreciated

from [Roger Lapthorn] [Permanent Link][Original]
To: [email protected]
Subject: Re: LF: RE: 137kHz QRSS30 beaconing still - reports appreciated
From: Roger Lapthorn <[email protected]>
Date: Sat, 30 Apr 2011 17:31:04 +0100
Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:in-reply-to:references:date :message-id:subject:from:to:content-type; bh=O9EAUGgg6FvxqEFFSWuWG5Lpain57qsl7Z04y3gpk+Q=; b=LoxavWZJ5lwSZnqRNj8xfoFhP0unwZtTbciBddxlWY7CAJvAjkv3lgricLnwv36+ZD KOih+THTpu436pMhb3zxnn8ZEMpgvNqvChCGVbIVcvjsOZb+MFTfRLCs1z2IJNqEgi5h nkvu6GaDl4tF1MT2jGfajuJ1Bhs/wDERkODMU=
Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; b=tvcg48Mfk1ASIt3sLJ4c/8NGu1WU2NgSzbyG1LjIUG6pfS1nbGxt1voFRp8uvcU1mJ AXtgPZxfcVa8xQoHcWnqLzviw41OWsy63QuBcHmYZGYRD406owDX4N8uBGFEq+cDf2HS bWMz2b5BsTzjS/+4keeLCiKvvxQHC0wVgCa38=
Domainkey-status: good (testing)
In-reply-to: <[email protected]>
References: <[email protected]> <[email protected]>
Reply-to: [email protected]
Sender: [email protected]
Dave

That is an excellent screen shot - most impressive! I generate the frequency by dividing a 3.560MHz crystal by 26 and I am unable to measure the frequency very accurately. It should be 137.6748kHz, but this could be off a bit.

Marcus

Next week I shall have a 3.582MHz crystal (30p from GQRP club) which, when divided by 26, will place me around 137.769kHz which is closer to the window looked in by the grabbers.

The beacon produces 2.4W (measured into 50 ohms) and the ERP from the fairly thin wire loop is estimated as around 50uW. My WSPR beacon produces around 3dB more.

73s
Roger G3XBM


On 30 April 2011 14:22, Dave G3WCB. <[email protected]> wrote:
Roger, LF,
 
Latest screen grab attached. I switched to my 1.2m tuned loop, and your signal improved by at least 3dB, maybe as much as 6 dB. See attached screenshot.
 
BTW, I make your frequency to be 137676.0. I have a small frequency error which makes signals read high by 0.3 Hz. The line at 137680.40 is a locally generated signal in 137680.0, which is pretty accurate.
 
The line appearing at 137676.8 (137676.5 actual) is a mystery - maybe it's a Loran line.
 
How many watts are you puttting into your loop?
 
73, Dave G3WCB IO91RM
 
 
-----Original Message-----
From: [email protected] [mailto:[email protected]]On Behalf Of Roger Lapthorn
Sent: 30 April 2011 12:16
To: [email protected]
Subject: LF: 137kHz QRSS30 beaconing still - reports appreciated

My QRSS30 (slow CW) LF beacon will continue until this evening. Only one report so far G3WCB at 101km.

Message:       XBM in QRSS30, pause, then G3XBM in 10wpm
Freq:             137.6748kHz
ERP:             50uW (antenna 80sq m vertical loop)
Location:       JO02dg, Burwell Cambs

Any reports and screen grabs would be much appreciated.

73s
Roger G3XBM



--
http://g3xbm-qrp.blogspot.com/
http://www.g3xbm.co.uk
http://www.youtube.com/user/g3xbm
https://sites.google.com/site/sub9khz/




--
http://g3xbm-qrp.blogspot.com/
http://www.g3xbm.co.uk
http://www.youtube.com/user/g3xbm
https://sites.google.com/site/sub9khz/

[More with this subject...]
<Prev in Thread] Current Thread [Next in Thread>
Previous by Date:  Re: LF: XBM 30-04.jpg, Roger Lapthorn
Next by Date:  LF: Re: 137kHz QRSS30 beaconing still - reports appreciated, Chris
Previous by Thread:  LF: Loran carrier [was 137kHz QRSS30 beaconing still - reports appreciated], Dave G3WCB.
Next by Thread:  Re: LF: RE: 137kHz QRSS30 beaconing still - reports appreciated, Markus Vester
Indexes:  [Date] [Thread] [Top] [All Lists]