Replacement of Coaxial Circulator 1A1OHYl

TM 11-5820-695-35

transmitter 2nd stage frequency multiplier 1A1OAl.

(5)

Connect and tighten the mating type

Remove 1A1OA1 from the enclosure.

TNC connector between crystal mixer 1A9AI and coaxial

circulator 1A9HY,1.

(6) Remove the three screws securing

coaxial circulator lAlOHY1 to the transmitter frequency

(6)

Tighten the four screws securing coaxial

multiplier group lA10 enclosure and then remove coaxial

circulator 1A9HY1 to the transmitter frequency mixer

circulator lA1OHYl from the transmitter frequency

stage 1A9 enclosure, then tighten the two screws

multiplier group lA10 enclosure.

securing crystal mixer LA9A1 to the transmitter

frequency mixer stage 1A9 enclosure.

b. Replacement.

CAUTION

Removal of components with rigid

(1) Rep!ace transmitter 2nd stage frequency

coaxial cable must be performed

multiplier 1A1OA1 and transmitter 3rd stage frequency

carefully to prevent damage to the

multiplier lA10A2 into their respective screw slots on the

lA10 enclosure (fig. 5-72). Place replacement coaxial

rigid coaxial cables.

circulator 1A1OHY1 on the 1A1O enclosure between

lA'lOA1 and 1A10A2. Connect the mating type TNC

(7) Reinstall transmitter frequency mixer

connector between IAlOHY1 and 1A1OA1.

stage 1A9 on plate assembly 1A16 (TM I15820-69-42).

(2) Connect the mating type TNC connector

(8) Set the POWER ON/OFF switch on meter

between coaxial circulator lAlOHY1 and transmitter 3rd

panel assembly 1A15A8 to ON.

stage frequency multiplier 1A1A2.

(9) Perform the T-1054/GRC-144 frequency

(3) Replace and tighten the three screws

multiplier metering circuit calibration procedure (para 3-

securing coaxial circulator 1A1OHY1 to 1A10 enclosure.

59).

(4) Tighten the screws securing transmitter

2nd stage frequency multiplier lA10A1 and transmitter

3-27. Replacement of Coaxial Circulator 1A1OHYl

3rd stage frequency multiplier 1A10A2 to 1A10

(fig. 8-1 and 5-72)

enclosure.

a. Removal

CAUTION

Replacement of components with

(1) Set the POWER ON/OFF switch on meter

rigid coaxial cables must be

panel assembly 1A15A8 to OFF.

performed carefully to prevent

damage to the rigid coaxial cables.

CAUTION

Removal of components with rigid co

(5) Reinstall transmitter frequency multiplier

axial cable must be performed

group lA10 on plate assembly 1Al16 (TM 11-582O-69-

carefully to prevent damage to the

12).

rigid coaxial cables.

(6) Set the POWER ON/OFF switch on meter

panel assembly lAlSA8 to ON.

(2)

Remove transmitter frequency multiplier

(7) Perform the T-1054/GRC-144 frequency

group lA10 from plate assembly 1,A16 (TM 11-5820-

multiplier metering circuit calibration procedure (para 3-

69542).

59).

(3)

Loosen, but do not remove, the two

screws on the rear side of component 1A10 securing

3-28. Replacement of Coaxial Circulator 1HY1

transmitter 3rd stage frequency multiplier 1A10A2 to the

(fig. 3-1)

transmitter frequency multiplier group lA10 enclosure.

(4)

Disconnect the mating type TNC

a. Removal.

connector between coaxial circulator 1A1OHYI and

transmitter 3rd stage frequency multiplier lA10HYI and

transmitter 3rd stage frequency multiplier 1A10A2 and

(1) Set the POWER ON/OFF switch on meter

remove 1A1OA2 from the enclosure.

panel Paw bly 1A15A8 to OFF.

(5)

Loosen the two screws securing

(2) Disconnect coaxial cable 1A16W18 (fig.

transmitter 2nd stage frequency multiplier 1A1OA1 to

3-13) from coaxial circulator 1HY1 connector DC

the transmitter frequency multiplier group IA10

MONITOR J8.

enclosure and disconnect the mating type TNC

connector between coaxial circulator ArlOHY1 and

Change 5

3-49