Re: LF: Re: G3XIZ - QRT - Try later

[Roger Lapthorn <rogerlapthorn@gmail.com>]

Just started looking for you again Chris (at 1145) , with narrower Spectrum Lab settings just sent from Gerhard in Austria. Grabber active.

73s
Roger G3XBM

On 12 February 2011 11:14, Chris Osborn <g3xiz@yahoo.co.uk> wrote:

You're right Mal,

Space is extremely restricted here and I'm almost surrounded by trees and buildings.
There's a playing field at the rear which if the wind was S- SW would be ok for a kite.
I may try that soon.

It's raining now but will keep an eye open for any opportunity to transmit using the balloons.

I'm TX ing now on the 40m end fed inverted 'L' aerial but only immediate locals will receive me
I suspect.

73 Chris G3XIZ

---

From: mal hamilton <g3kevmal@talktalk.net>

To: rsgb_lf_group@blacksheep.org

Sent: Sat, 12 February, 2011 10:28:34
Subject: LF: Re: G3XIZ - QRT - Try later



Chris

An open space or field would be more suitable, its difficult to get a balloon absolutely vertical even under calm conditionx.

thermal dynamics, up drafts etc.

The OE5ODL balloon was varying from near vertical to horizontal when I copied him a few days ago on 9 Khz

de mal/g3kev

 

----- Original Message -----

From: Chris Osborn

To: rsgb_lf_group@blacksheep.org

Sent: Saturday, February 12, 2011 9:55 AM

Subject: LF: G3XIZ - QRT - Try later

LF

The wind is too strong to launch the balloons anywhere near to vertically and the first attempt
snagged a nearby tree.

I'll try again later if the wind drops.

I think I'll take up stamp collecting as a hobby instead !

73 Chris G3XIZ

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From: "victor13@online.nl" <victor13@online.nl>
To: rsgb_lf_group@blacksheep.org
Sent: Sat, 12 February, 2011 9:44:01
Subject: RE: LF: VLF Transmissions - G3XIZ - 12th / 13th February



The rx is running

 

gl

 

Victor

PA3FNY

 

-----Oorspronkelijk bericht-----
Van: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blacksheep.org]Namens Chris Osborn
Verzonden: zaterdag 12 februari 2011 10:09
Aan: rsgb_lf_group@blacksheep.org
Onderwerp: Re: LF: VLF Transmissions - G3XIZ - 12th / 13th February

LF,

I hope to be transmitting soon, at least by 10.00 Z

Conditions are not ideal with light drizzle and freshening breeze but we'll give it a shot.

The measured QRG is

8.976 642 kHz

Thanks for all efforts to find the signal.

73 Chris G3XIZ

---

From: Roger Lapthorn <rogerlapthorn@gmail.com>
To: rsgb_lf_group@blacksheep.org
Sent: Sat, 12 February, 2011 8:58:20
Subject: Re: LF: VLF Transmissions - G3XIZ - 12th / 13th February

Chris,

My system is on now (from 0900) and screenshots are being uploaded to https://dl.dropbox.com/u/15047843/xbm_grab.jpg.

73s
Roger G3XBM

On 10 February 2011 14:42, Chris Osborn <g3xiz@yahoo.co.uk> wrote:

LF,

 

I have had permission to transmit on VLF this coming weekend: 12th and 13th February.

Weather permitting I shall try again with my balloon-launched aerial, hopefully about 50m vertical.

 

The frequency will be

 

8.976 66 kHz  (i.e. 10.000 MHz / 1114) and is derived from an oven controlled xtal oscillator.

Hopefully the frequency will be more stable than last time.

If this frequency proves unsuitable I can transmit on 10.000 MHZ / 1112 . .10.000 MHz / 1116  etc.

 

I shall send a continuous carrier as and when conditions permit.

 

My newly built VLF TX is working well and can deliver about 150 watts of RF.

On this occasion I shall be using the original (fairly lossy) loading coil but am presently making a more efficient one.

 

All reports will be most welcome.

 

73

Chris G3XIZ

 

 

--
g3xbm-qrp.blogspot.com/
www.g3xbm.co.uk
www.youtube.com/user/g3xbm
G3XBM   GQRP 1678    ISWL G11088

-- 
g3xbm-qrp.blogspot.com/
www.g3xbm.co.uk
www.youtube.com/user/g3xbm
G3XBM   GQRP 1678    ISWL G11088