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Hi Luis
In answer to your question, I calculated using the
following web site:
www.smeter.net/antennas/simple-t-antennas.php
and then followed the link to TAntenna which provided a simple Basic program
tantenna.exe by A.J.Edwards G4GGQ. Probably the easiest way is to
use a google search for T Antennas and follow the links.
The outcome is probably inexact as my antenna is
really of the unbrella type with the tops sloping down, however when I converted
from true 'T' to the present setup, no difference was noticed or
reported. See attached sketch.
73 Dennis M0JXM
----- Original Message -----
Sent: Saturday, April 30, 2011 7:32
PM
Subject: Re: LF: Re: GB4FPR 502 KHZ
INTERNATIONAL MARCONI DAY 30/4/2011
Hi Dennis,
A question, please. I am beaconing on 502,25 KHz. My transmitter puts 35
W into a T antenna, high 20 m and an horizontal capacitor top of 10 m.
With others ham fellows we are discussing what ERP I am sending, but we
have no results. Can you tell me how measure or are you calculating or
estimating this ERP?
Thanks, 73
Luis, EA3WX
Sent: Saturday, April 30, 2011 8:55 PM
Subject: LF: Re: GB4FPR 502 KHZ INTERNATIONAL MARCONI DAY
30/4/2011
Hi Graham
I tried sending to you 1630-1635 and 1940-1945
local times today Saturday 30 04 2011, but no reply. I guess you could not hear me, or I you. I send
CW 25watts into a 'T' aerial 20m top and 10m vertical. Estimated
erp 250mW max. Anyway, I hope you had a good day with plenty of
DX.
73 Dennis M0JXM
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