Yaesu FRG-100, Technical Supplement

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The FRG-100 is carefully designed to allow
the knowledgeable Operator to make nearly
all adjustments for various Station conditions,
modes and Operator preferences simply from
controls on the front and rear
out having to open the of the transceiver.
The FRG-100 Operation manual describes
these adjustments, plus certain internal
tings.
The following procedures the
times critical and tedious adjustments that are
not
normally required once the transceiver
has left the factory. However, if darnage
and some subsequently are
realignment may be required. If a
sudden occurs normal
tion, it is likely due to component failure;
alignment should not be done until after the
fault component has been replaced.
We recommend that be
formed by authorized Yaesu Service
experienced with the circuitry and fully
equipped for repair and alignment. So, if a
fault is suspected, you should contact the
ing for instructions regarding repair.
Authorized Yaesu Service technicians have
the latest information, and
align all circuits and make
to ensure compliance with
factory specifications after replacing faulty
components.
Those who do undertake any of the
ing alignments are cautioned to proceed at
their own risk. Problems
by
ized attempts at realignment are not covered
by the warranty
Also, Yaesu must
serve the right to circuits and
ment procedures in the interests of improved
Performance, without notifying owners.
no circumstances should any
ment be attempted unless the normal
and Operation of the are clearly
derstood, the of the has
been clearly pinpointed and any faulty
ponents replaced, and the need for
ment determined to be absolutely
The following test equipment (and
ough familiarity with it’s correct use) is
sary for realignment. Correction of
the by misalignment
ing from use of improper test equipment is
not covered the warranty While
most do not require all of the equipment
listed, the interactions of some adjustments
may require that more adjustments
be performed afterwards. D
O
not attempt to
only a step un less it is clearly
isolated electrically from all other
Rather, have all test equipment ready before
beginning, and follow all of the
in a
in the they are presented.
Digital DC Voltmeter
RF Millivoltmeter
AF Millivoltmeter
RF Standard Signal Generator/calibrated
output and 0
Frequency Counter
0 FM Unit-100
0 SINAD Meter
Alignment Preparations
0
0
.
Except where specified otherwise, the
ceiver should be tuned to 14.2 MHz, and the
following controls set as indicated;
all buttons off
all knobs fully CCW (minimum)
After completing one
read the
mg step to determine whether the same test
equipment will be required. If not, remove the
test equipment before proceeding.
Correct alignment requires that the
ent temperature be the same as that of the
and test equipment, and that this
temperature be held between 20 and
C (68 F). If the is brought into
the shop from hot or air it should be
allowed some time for thermal equalization
with the environment before alignment.
Alignments must only be made with the
oscillator shields and circuit boards firmly in
Supplement