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Re: LF: RE: Who needs antennas! - success with ground electrodes on500kH

To: <[email protected]>
Subject: Re: LF: RE: Who needs antennas! - success with ground electrodes on500kHz
From: "Tony Baldwin" <[email protected]>
Date: Thu, 17 Jun 2010 11:18:15 +0100
In-reply-to: <[email protected]>
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I will leave mine on overnight, although it would be a miracle if you made it this far on my mediocre set up.
I might also lay some wire out and make an "earth antenna" too.
 
I'm reasonably new to the group, just re-registered, although I did lurk in the background last winter.
The intention is to get myself a better setup for the winter months and build myself a transmitter for 136 and maybe have some fun along the way.
Station location is fairly close to Mizen Head, the opposite end of Ireland to Finbarr (extreme SW), in IO51DN.
In the meantime I will continue to "lurk"
 
73, Tony, EI8JK.
----- Original Message -----
Sent: Thursday, June 17, 2010 9:56 AM
Subject: Re: LF: RE: Who needs antennas! - success with ground electrodes on500kHz

Folks,

Well I need to do an estimate of ERP with the "earth antenna", so will try to measure this in the coming days. Jusging by reports so far the system is about 6-10dB down on my top loaded vertical antenna. The power from the transverter is 5W still but with the vertical the ERP was only around 1mW (calculated and measured). So, at a first guess, the ERP is probably around 200uW but perhaps with directivity because of the loop action.

Rik, I could run it overnight tonight if you like to see who can copy me. Anyone else willing and able to listen overnight tonight please?

73s
Roger G3XBM




On 17 June 2010 09:30, Mike-WE0H <[email protected]> wrote:
3 watts into my 600 meter 70' vertical gets me easy CW copy at 100 miles in daylight. If you can get a bit over 100 miles with 5 watts CW in daylight with that Earth Electrode antenna, then you know it works damn good.

Mike
WE0H




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