This manual provides operator's and organizational maintenance instructions for the 2-Channel
Multiplexer TD-1288 ( )/GRC and the 5-Channel Multiplexer TD-1289 ( )(V)/GRC. The 2-channel
and the 5-channel multiplexer are primarily used with the RT-524/VRC and the RT-246/VRC which
are components of the AN/VRC-12 radio family.
Refer to the Iastest issue of DA Pam 310-1 to determine whether there are new editions, changes
or additional publications pertaining to the equipment.
a. Reports of Maintenance and Unsatisfactory Equipment. Department of the Army forms and
procedures used for equipment maintenance will be those described by TM 38-750, The Army
Maintenance Management System.
b. Report of Packaging and Handling Deficiencies. Fill out and forward SF 364 (Report of
Discrepancy (ROD)) as prescribed in AR 735-11-2/DLAR 4140.55/ NAVMATINST 4355.73/AFR
c. Discrepancy in Shipment Report (DISREP) (SF 361). Fill out and forward Discrepancy in
Shipment Report (DISREP) (SF 361) as prescribed in AR 55-38/ NAVSUPINST 4610.33 B/AFR
75-18/MCO P4610.19C/DLAR 4500.15.
Administrative storage of equipment issued to and used by Army activities shall be in accordance
with TM 740-90-1.
Destruction cf Army electronics materiel to prevent enemy use shall be in accordance with