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Re: LF: ZEVS transmission at 1800BST

from [Chris Dillon] [Permanent Link][Original]
To: [email protected]
Subject: Re: LF: ZEVS transmission at 1800BST
From: Chris Dillon <[email protected]>
Date: Sun, 08 May 2011 22:15:32 +0100
In-reply-to: <1304888225.1662.27.camel@gerhard-desktop>
References: <[email protected]> <[email protected]> <1304888225.1662.27.camel@gerhard-desktop>
Reply-to: [email protected]
Sender: [email protected]
User-agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.17) Gecko/20110414 Thunderbird/3.1.10
Hi Gerhard - I've attached my SL .usr file for you. I set it up only this afternoon so I don't claim it to be optimised in any way - particularly the noise blanker. The FFT bin width is 10.17mHz with a scroll interval of 40s. Input is decimated by 144 and the fft size is 32768. I understand Eddie G3ZJO is using similar settings and E-field probe - you can see the ZEVS trace on his grabber at http://g3zjo.bplaced.net/index.htm. In fact Eddie's trace shows the transmission started earlier than I thought at around 1740 BST (1640UTC). 

73 Chris G3WCD



On 08/05/2011 21:57, Gerhard Hickl wrote:

Hi Chris, LF!

Very interesting....I'm also using Stefan's E-probe and on 9khz ist's
very sensitive. My probe is more than 15m above ground and I'm also
trying to receive the ZEVS-transmissions. I have the window running
since a few days but nothing on screen here in JN88hl....

I'm just using a low-pass filter with 1000Hz -3db point and the
noise-blanker afterwards. I wonder about your SL-settings.

73
OE3GHB
Gerhard



Am Sonntag, den 08.05.2011, 18:58 +0100 schrieb Chris Dillon:

Hi all - ZEVS transmission starting at 1800 BST received at IO92vf
using a 'Stefan' pre-amp with a 1m probe about 3m high.
Still transmitting a constant carrier on 82 Hz at 1857 BST. Wonder if
they QSL reception reports?!

73 Chris G3WCD







On 08/05/2011 09:37, qrss wrote:

Stefan / LF

Message commenced 0800UTC.

Eddie

Attachment: ZEVS 82Hz.USR
Description: Text document

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