TM 11-5820-880-12
This manual has a companion document with a TM number followed by "-HR" (which stands for
Hand Receipt). The TM 11-5820-880-12-HR consists of preprinted hand receipts (DA Form 2062)
that list end item related equipment (i.e, COEI, Bll, and AAL) you must account for. As an aid to
property accountability, additional -HR manuals may be requisitioned from The US Army Adjutant
General Publications Center, Baltimore, MD, in accordance with procedures in Chapter 3,
AR 310-2, and DA Pam 310-10-2.
If your multiplexer needs improvement, let us know. Send us an EIR. You, the user, are the only
one who can tell us what you don't like about your equipment. Let us know why you don't like
the design. Put it on an SF 368 (Quality Deficiency Report). Mail it to Commander, US Army
Communications-Electronics Command and Fort Monmouth, ATTN: DRSEL-ME-MP, Fort
Monmouth, NJ 07703. We'll send you a reply.
SECTION II
DESCRIPTION AND DATA
The purpose of the 2-Channel Multiplexer TD-1288 ( )/GRC is to allow an operator to use two
transceivers with a maximum nominal power output of 60 watts each in the 30.00 MHz to 88.00
MHz frequency range and couple them to a single broadband antenna. The purpose of the
5-ChanneI Multiplexer TD-1289 ( ) (V)/GRC is to allow an operator to use three to five
transceivers with a maximum nominal power output of 60 watts each in the 30.00 MHz to 88.00
MHz frequency range and couple them to a single broadband antenna. The Band-pass Filter
F-1482 ( )/GRC provides the rf signal isolation and the Coupler CU-2266 ( )/GRC or the Coupler
CU-2267 ( )/GRC provides the rf signal coupling which permits use of a single wideband
antenna. Antennas such as AS-1729/VRC, AS-2731/GRC and RC-292 are NOT broadband antennas
and must NOT be used with the TD-1288 ( )/GRC or the TD-1289 ( ) (V)/GRC. The mast mounted
antenna AS-3166 (part of Antenna Group OE-254/GRC) is an example of a broadband antenna
suitable for use with the TD-1288 ( )/GRC and TO-1289 ( ) (V)/GRC.
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