Yaesu FRG-100 Technical Supplement - Alignment Preparations

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