Return to KLUBNL.PL main page

rsgb_lf_group
[Top] [All Lists]

Re: LF: RE: 630m WSPR this evening

To: "[email protected]" <[email protected]>
Subject: Re: LF: RE: 630m WSPR this evening
From: Roger Lapthorn <[email protected]>
Date: Fri, 13 Sep 2013 14:01:32 +0100
Authentication-results: mx.google.com; spf=neutral (google.com: 195.171.43.25 is neither permitted nor denied by best guess record for domain of [email protected]) smtp.mail=[email protected]; dkim=pass [email protected]; dmarc=pass (p=NONE dis=NONE) header.from=gmail.com
Delivered-to: [email protected]
Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=subject:references:from:content-type:in-reply-to:message-id:date:to :content-transfer-encoding:mime-version; bh=8YYbbd0m307zLn7bO8Aivp9yvm11G8IivYHOKQk/9ec=; b=Qvx6e3TgB24Uw0gyEsOvfRpDFfe7N+RE5fkRdmfNnjDmDwo/qJPtdOB+W1OOSO7g43 FNtSlW+90QDZwdfpFd45oeblJFCu6cCePYz0xXvhNhGyyd00bIRVNI9tKPcrdIV557X0 Fj31m7hPkFJemDvOpPoywr6/71R5sqkinms6j4spvz5VTD0TPs/5eCX7cH9yeSHw86wP Ew2+RrPP+e8n6IB/pUhLmCD9m4cALzNaadX0R5aft3oJlAgROO0Ap7gserAZRatbhBAM yyXoGgjuVAWAfDVVR7pXZ9Em1JAxxBLAuZkqB2RtW9hxhFjmGmUL2LppNfO1reyAG16A 9b4Q==
In-reply-to: <[email protected]>
References: <[email protected]>
Reply-to: [email protected]
Sender: [email protected]
No changes Dave. Thanks for the reports. 

73s
Roger G3XBM

On 13 Sep 2013, at 11:30, "Dave G3WCB." <[email protected]> wrote:

Hi, Roger.
 
I'm copying you this morning - see screenshot. (I've got a bit of interference just HF of your WSPR transmission).
 
Have you changed anything your end?
 
73, Dave G3WCB IO91RM
 
 
-----Original Message-----
From: [email protected] [mailto:[email protected]]On Behalf Of Roger Lapthorn
Sent: 12 September 2013 20:22
To: [email protected]
Subject: Re: LF: RE: 630m WSPR this evening

And you are weaker with me Dave G3WCB (-30dB) than on the earth-electrode set-up. Suspect loop directionality and odd orientation may be the issue?

73s
Roger G3XBM


On 12 September 2013 20:06, Dave G3WCB. <[email protected]> wrote:
Hi, Roger.
 
No sign of you so far this evening.
 
73, Dave G3WCB IO9RM
-----Original Message-----
From: [email protected] [mailto:[email protected]]On Behalf Of Roger Lapthorn
Sent: 12 September 2013 19:15
To: [email protected]
Subject: LF: 630m WSPR this evening

'Recently I moved 350m east (!) to a new QTH and I've been experimenting with 630m WSPR.

My initial tests were with the transverter on my website feeding a pair of earth-electrodes but with a shorter baseline than was possible at the old QTH (about 12m separation). Although I managed to get reports from G, ON and PA, it was clear that results were nowhere near as good as I obtained at the old QTH. I am speculating that this is due to the effective spacing between earth rods being much shorter and due to buried wires and pipes criss-crossing the lawn. On RX it is working very well though and I have copied most of the nearer Europeans on 630m WSPR.

This afternoon I converted the earth-electrode antenna to an "in the air" loop by disconnecting the earth rods and joining the wire ends with a wire running along the top of the lawn (in the grass). The loop DC resistance is 0.9 ohms and it tunes sharply with about 1.7nF. Matching is via a 3C90 step-down toroid.

Initial encouraging reports include first spots from M0PPP, who had failed to copy me before from this QTH, as well as PA3ABK/2 and G8HUH.

If anyone else can look for me this evening I'd appreciate it. The loop is not very high and can be further improved if results this evening are encouraging.

73s
Roger G3XBM

--



--
<G3XBM 10z25 13 Sep 2013.jpg>
<Prev in Thread] Current Thread [Next in Thread>