TM 11-7440-232-12/NAVELEX 0967-LP-275-5010
1-10. DIFFERENCES BETWEEN MODELS
a. The differences between models are tabulated below.
b. The major difference is the modem shelf used for each digital data modem.
MD-701/UY uses unshielded modem shelf with rear termination panel and RF oscillator.
MD-701A/UY uses modified unshielded modem shelf with rear termination panel and RF oscillator and is
modified for use of a data carrier alarm module.
MD-701B/UY uses RF shielded modem shelf (which includes a rear termination panel) with RF oscillator and
includes a data carrier alarm module.
c. The minor differences are the unmodified modules used in the MD-701/UY and the modified modules used in the
MD-701A/UY and MD-701B/UY. Refer to the specific modules listed below in table 1-1.
d. Also, refer
to paragraph 1-12, Equipment Configuration, for
of each digital data modem, including
TABLE 1-1. DIFFERENCES
DIGITAL DATA MODEM MD-701(*)/UY
DIGITAL DATA MODEM
POWER SUPPLY ASSEMBLY, A1
900-44571-01 modified by MK2-44571-01
900-44572-01 modified by MK1-44572-01