This was the reason QST stop publishing gain figures for antenna
manufacturer's advertisements some years back.
Julio, W4HY
-----Original Message-----
From: hanslg@aol.com [mailto:hanslg@aol.com]
Sent: Tuesday, November 03, 2009 1:37 PM
To: towertalk@contesting.com
Subject: [TowerTalk] Fwd: Dbi vs DBd
Both were used. Many times a manufacturer used the dBi without telling
as the numbers looked better. To make figures looking even better the
numbers were also many times "padded".
I, many times, saw figures that just didn't make sense such as a dipole
with some extra coils on stating "8 dB gain". :-)
I would take any information about antenna gain from the 50-s with a
grain of salt.
Hans - N2JFS
-----Original Message-----
From: Andy <ai.egrps@gmail.com>
To: towertalk@contesting.com
Sent: Tue, Nov 3, 2009 12:32 pm
Subject: Re: [TowerTalk] Dbi vs DBd
> I am trying to find out which of the two measurement references were
used on
antennas originating in the late 50's. Say 1959. I know
> in the past one or the other was used, I just dont remember which one.
This is just my opinion, mind you ...
But I would guess that both may have been used back then.
Measurement accuracy was not so good in the 1950s that things were
that precise anyway.
Andy
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