Ten-Tec 238C manual
Part #74428
First release, June 2009. Printed in U.S.A.
type and length of transmission line, height
of antenna and its proximity to other objects.
The model 238C provides a coupling
method to convert the resistive/reactive load
to a pure resistance of 50 ohms that will
accept maximum power from the transmitter.
This is not to say that any and all antennas,
when converted to a 50 ohm resistive
impedance by means of a tuner will give
identical performance. To best understand
the tuner adjustments required, it is
necessary to have a fundamental knowledge
of how antenna systems function. It is
recommended that additional reading on the
subject be done by those interested in
obtaining maximum performance from their
antenna systems. The ARRL Antenna
Handbook, ARRL Radio Amateur’s
Handbook (antenna and transmission line
sections), Low Band DXing by John
Devoldere, ON4UN and other antenna
books published by the publishers of
amateur radio magazines are excellent
sources for information.
