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@
MOTOROLA
INC.
Communications
Group
MOTOROLA HF -SSB
AUTOMATIC ANTENNA TUNER
MODELS T1959A, T1961A, T1962A
1.
DESCRIPTION
1.1 Motorola HF-SSB automatic antenna tuners are
antenna matching networks rated at 125 watts
peak-envelope-power.
Selection of the network com-
ponents
for antenna
matching is performed
by a
microprocessor-based
circuit that monitors
antenna
conditions each time a channel is changed. The entire
tuning process usually takes less than one second.
Microprocessor
control eliminates the need for pro-
gramming,
preset adjustments,
manual
tuning,
or
manual adjustments during installation or operation.
1.2 The automatic antenna tuner can accommodate
any number of channels automatically. .New chan-
nels can be added at any time without adjusting the
)
tuner.
\
.. :
1.3 The automatic antenna tuner includes stainless
steel hardware and a weather resistant housing
that insure corrosion resistance and durability. Installa-
tion is simplified; the automatic tuning capability
eliminates the need to open the tuner housing during in-
stallation.
1.4
Models TI959A and TI961A match the impedance
of an end-fed antenna (23-35 foot vertical whip or
23-60 foot random length wire) into a nominal 50-ohm
FAEPS-3000S-0
"5381
)
--~
Figure 1. Automatic Antenna Tuner
impedance
source
with
a frequency
range from
2-18 MHz. Model T1961A includes the TRN4423A con-
nector kit for field assembly of the necessary control
cables. Model T1959A uses factory assembled accessory
cables, TKN8123A, TKN8120A and TKN812IA. Other-
wise, the T1959A and TI961A are identical. T1959A
and TI961A Antenna Tuners are compatible with the
102-inch niobile whip antenna
(TAAI OOOA) from
2-18 MHz if a TKN8119A antenna matching harness is
used.
Model T1962A Antenna
Tuner is capable of
matching a 23-foot whip antenna from 2-9 MHz. This
model also includes the field assembled TRN4423A con-
nector kit.
NOTE
Older versions of Motorola single side-
band radios must be modified before they
can be used with these tuners. Please refer
to the installation manual for the specific
tuner
for
more
details.
Installation
manual 68P81111EI6 applies for tuner
Model
T1959A.
Installation
manual
68P8111OE64 applies for Models T1961A
and T1962A.
2.
MODEL COMPLEMENTS
T1959A 2-18 MHz Base Tuner consists of:
.
TLAl1O2A
.
THN6410A
.
TLA6102A
T1961A 2-18 MHz Tuner consists of;
.
TRN4423A Connector
.
TLA II 02A Tuner
.
THN641OA Housing
.
TLA61O2ARF Board
T1962A2-9 MHz Tuner consistsof;
.
TRN4423A Connector
.
TLA1112ATuner
.
THN64lOA Housing
.
TLA6112A RF Board
@ Motorola, Inc. 1981
All Rights Reserved
Printed in U.S.A.
~h1(f1)fi@@IIlY!JJ(fnltJi(fl)~
ff@ff\VIfi~
1301 E.Algonquin Road, Schaumburg, II.60196
68P81045E90-A
10/1/81.
NWP
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