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

from [Chris Osborn] [Permanent Link][Original]
To: [email protected]
Subject: Re: LF: VLF Transmissions - G3XIZ - 12th / 13th February
From: Chris Osborn <[email protected]>
Date: Sat, 12 Feb 2011 09:09:28 +0000 (GMT)
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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 <[email protected]>
To: [email protected]
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 <[email protected]> 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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www.g3xbm.co.uk
www.youtube.com/user/g3xbm
G3XBM   GQRP 1678    ISWL G11088

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