Re: LF: Re: 137.7682kHz QRSS30 beaconing - reports appreciated

[Roger Lapthorn <rogerlapthorn@gmail.com>]

Photos of (a) the 137kHz QRSS30 beacon and (b) the 137kHz transverter are on my blog page at http://g3xbm-qrp.blogspot.com/2011/09/lf-kit-improvements.html .  Subject to test results, both may be tidied up and boxed later. Otherwise it is back to the bench.

The PAs run almost cold, whereas my 50 ohm dummy load is very hot, suggesting very good efficiency from the IRF540 device in each case. 

73s
Roger G3XBM

On 8 September 2011 14:19, Roger Lapthorn <rogerlapthorn@gmail.com> wrote:

If you are seeing me that would be encouraging Chris as you are in the worst direction from here for the loop antenna.

73s
Roger G3XBM

On 8 September 2011 14:14, Chris <c.ashby435@btinternet.com> wrote:

OK Roger,
Thanks and see you put that now! Sorry.
I am pretty sure I am seeing you, but it's a bit 'iffy'. Will keep an eye on it and make some captures.
Vy 73,
Chris, G4AYT, Whitstable.

----- Original Message ----- From: "Roger Lapthorn" <rogerlapthorn@gmail.com>
To: <rsgb_lf_group@blacksheep.org>

Sent: Thursday, September 08, 2011 2:02 PM

Subject: Re: LF: Re: 137.7682kHz QRSS30 beaconing - reports appreciated


Probably on until 0800z Friday Chris.

73s
Roger G3XBM

Via my iPod Touch 4g 2.4GHz handheld.

On 8 Sep 2011, at 13:34, "Chris" <c.ashby435@btinternet.com> wrote:

How long are you leaving it on, Roger? Looking now.
Chris, G4AYT, Whitstable, Kent.
----- Original Message ----- From: "Roger Lapthorn" <rogerlapthorn@gmail.com>
To: <rsgb_lf_group@blacksheep.org>
Sent: Thursday, September 08, 2011 1:23 PM
Subject: Re: LF: Re: 137.7682kHz QRSS30 beaconing - reports appreciated


Martin/Stefan

Many thanks and good luck.

There is more ERP to come in a few weeks by increasing the PA supply volts and thickening the loop wire.

For now, small steps....

73s
Roger G3XBM



Via my iPod Touch 4g 2.4GHz handheld.

On 8 Sep 2011, at 12:38, "Martin Evans" <books@mollies.freeserve.co.uk> wrote:

I'll go and get things running on receive now, Roger.

Who knows, this may be the day!

Martin  GW3UCJ Swansea.

########################################

Having increased the ERP of my QRSS30 beacon to ~0.2mW (23W from the PA)

I'd

appreciate any reports please.  The beacon is ON now and I hope to leave

it

running  from 1130z Thursday - 0800z Friday.
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/