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Re: LF: IK2DED beacon and E field probe.

To: [email protected]
Subject: Re: LF: IK2DED beacon and E field probe.
From: "Alexander S. Yurkov" <[email protected]>
Date: Thu, 19 Sep 2002 22:32:44 +0000 (GMT)
In-reply-to: <[email protected]>
Reply-to: [email protected]
Sender: <[email protected]>
Hi, Rik and Group.

On Thu, 19 Sep 2002, Rik Strobbe wrote:

Antenna current = 1.8A
Theory : radiated power = 0.06*1.8^2 = 194mW EMRP (= 583mW EIRP or 355mW ERP)
Reality : about 35mW ERP (based on field strength measurement)
Difference : -10dB !
Reason : antenna surrounded by many trees
-10 dB? Hmmmm... To decrease ERP by 10 dB total curent in trees should be
about 67 per cent of antenna current. May be it is some another reason?
2 or 3 dB is not surprise, but 10 dB....

I wonder why my message on RX3QFM does not go to a Group? Two times I try
to send and there is no echo for a long time... But another MSG go
sucsesfully. I'll try ones more...

73 de RA9MB/Alex
http://www.qsl.net/ra9mb




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