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Hi Gary
Thanks for the information. Have been
busy in the garden, but will get busy with the slide rule soon.
73 Dennis M0JXM
----- Original Message -----
Sent: Sunday, May 01, 2011 9:22 AM
Subject: Re: LF: Re: GB4FPR 502 KHZ
INTERNATIONAL MARCONI DAY 30/4/2011
Hi Dennis,
Alan G3NYK has an ERP spreadsheet calculator which should be a good
estimate & make the calculations easier. Calculators at the bottom of the
page & you will find the page here :-
Gary - G4WGT.
On 1 May 2011 09:49, DENNIS EASTERLING <[email protected]>
wrote:
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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