If the swr meter is between the antenna and the tuner then you are not
reading the swr the radio or amplifier sees. The proper place for the
swr meter is after the amplifier and before the tuner. Tune the tuner
with the amplifier in standby and then bring the amp online.
The tuner isn't really to fool the radio but to act as an impedence matcher
to transform the impedence from the antenna (whatever the value is) to the
50 ohms our radios and amplifiers need to safetly produce full power.
Hope this makes sence.
> ----- Original Message -----
> From: "Bill Hawkins" <firstname.lastname@example.org>
> To: <email@example.com>
> Sent: Saturday, February 14, 2004 8:53 AM
> Subject: [TowerTalk] Tuners
> I have always been a bit confused about antenna tuners. I contend that it
> a box inserted into a feedline to fool the transmitter or amplifier into
> think it is feeding power into a "perfect" load. There are other
> This is not the point of my question.
> I place my SWR/power meter after my tuner and tune for minumum reflected
> power indicated on the meter. This makes the amp think it is seeing a very
> good load. Or, if the amp is not on, the transceiver sees a good load.
> I recently saw a couple of diagrams that placed the SWR meter prior to
> antenna tuner. I don't remember what the articles were about but it has
> bothered me ever since I saw them.
> Is this an accepted method of SWR measurement? Can it indicate a properly
> tuned antenna/feedline? Or was it a drawing error?
> Bill W5EC
> See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless
> Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with
> questions and ask for Sherman, W2FLA.
> TowerTalk mailing list
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
TowerTalk mailing list