Re: LF: Re: G3XBM: 500kHz ERP increased by 6dB - WSPR reports please

[Roger Lapthorn <rogerlapthorn@gmail.com>]

Currently I am on around 0.503910kHz and operating 10% on TX.  I will increase this to 25% TX later in the evening when more stations are listening.

Clemens, I hope you will be able to decode me this evening!

73s
Roger G3XBM

2009/11/6 Clemens Paul <cpaul@gmx.net>

Roger,

 

are you using the same dial frquency of 0.503910 +/-20Hz as before ?

When does your transmission start?

 

73
Clemens
DL4RAJ

 

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

From: Roger Lapthorn

To: rsgb_lf_group@blacksheep.org

Sent: Friday, November 06, 2009 5:45 PM

Subject: LF: G3XBM: 500kHz ERP increased by 6dB - WSPR reports please

Today I modified my 500kHz antenna. The 28MHz halo up at the top of the 5-6m vertical section (which was the coax feed to the 28MHz halo) was removed and replaced by a spiral inductance/ top capacity hat consisting of around around 8 "spiralling in" turns in the space occupied by the original halo.  Seeing my initial reports from M0BMU I am some 5-6dB stronger than I was before, I guess because more of the antenna current is in the vertical section. The measured antenna current is not much different though.

Please listen for me on 500kHz WSPR and let me know if I am now stronger than before.

73s
Roger G3XBM

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http://www.g3xbm.co.uk
G3XBM    GQRP 1678      ISWL G11088

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http://g3xbm-qrp.blogspot.com/
http://www.g3xbm.co.uk
G3XBM    GQRP 1678      ISWL G11088