Re: LF: VLF Transmissions - G3XIZ - 12th / 13th February

[Chris Osborn <g3xiz@yahoo.co.uk>]

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

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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

 

 

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G3XBM   GQRP 1678    ISWL G11088