I mentioned this on a reflector which W8JI saw a few years
ago...about the efficiency of the L as opposed to the T. He
emailed me that, depending on how much of what element the L
required to match, since the value of the inductor must be
so large sometimes, that a T might well be more efficient. I
have never found the inductor to be lacking in the max value
or element Q department, but it is worth thinking about.
I use the 238B or a rewired to be an L ckt, Nye MB5A.
Chuck, KE9UW
---- Original message ----
>Date: Mon, 21 Mar 2005 18:33:03 -0500
>From: "Gary Hoffman" <ghoffman@spacetech.com>
>Subject: Re: [TenTec] apparent match possible in T Tuner
>To: "Discussion of Ten-Tec Equipment"
<tentec@contesting.com>
>
>That would be humorous, right up until the tuner melted.
>
>Of course that is not literally what happens.
>
>Its just that the circulating currents inside the L/C
components of the
>tuner go up, to disadvantageously high levels. The power
does get radiated,
>except what is consumed in the resistive component of the
tuner devices.
>
>There are excellent explanations in the literature which
show the math that
>explains why a T is less efficient. I don't have a link
handy, but I'm sure
>that someone else will provide one.
>
>73 de Gary, AA2IZ
>
>
>----- Original Message -----
>From: "Jeff Frank" <jafrank@nyc.rr.com>
>To: <tentec@contesting.com>
>Sent: Monday, March 21, 2005 9:15 PM
>Subject: Re: [TenTec] apparent match possible in T Tuner
>
>
>> Do you mean to say you really might not be able to notice
that all the RF
>is
>> just circulating in the tuner with a T match instead of
going out to the
>> antenna if you get the "false" match? There would be no
indication of this
>> except nobody would answer you because your signal would
be so weak? Does
>> that really happen to people???
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