1-15 TM106601_(7/01)
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RESTRICTION ON THE TITLE PAGE OF THIS DOCUMENT.
OMMAND
YSTEMS
IVISION
The RT-1601 contains a tight tolerance magnetron that is required to operate with a beacon
transponder. This lightweight X-band transmitter provides a peak power of 10 KW with the
capability of transmitting a long and short pulse. The long pulse is for weather, beacon, and long-
range search. A short pulse is used in short-range search to provide for high resolution of small
targets.
Within the RT, there are two receivers: one for weather returns and one for beacon returns. Target
data from the receivers are filtered and converted into digital data that can be displayed on the MFD.
There are two ARINC 453 data busses to provide radar target data to two MFDs.
Note
+ Previous Telephonics Weather Radar Systems
contained an NC-104B Navigation
concentrator LRU. The NC-104B allowed the
radar system to operate in various control and
display configurations employing non-
Telephonics equipment. This function has
been incorporated in the RT-1601. This
eliminates the need for using an NC-104B.
The RT-1601 is fully compatible with systems
that previously used NC-104B and RT-1401B.
Two versions of NC-104B are available:
• NC-104B (Previously used part number
3614331-1004) is the preferred version.
It is described as NC-104B (-1004) in
this manual.
• NC-104B (Previously used part number
3614331-1005). In this manual, it is
described as NC-104B (-1005). Use of
this version should only be considered
after consultation with Telephonics
engineering and engineering personnel of
the non-Telephonics equipment to be
used.
The RT can be configured with a strapping pin on the unit connector to simulate either the NC-104B
(-1004) or the NC-104B (-1005). The radar operation is identical in either configuration, but the
digital ARINC 429 control data is different. The primary configuration of the RT-1601 should be
NC-104B (-1004). This configuration is compatible with numerous MFD systems. The NC-104B (-
1005) configuration is not recommended unless required by the MFD system.
The configuration of the RT will determine which version of the radar control panel is used. See the
radar control panel section to determine which version of the CP-113 should be used based upon the
configuration of the RT.
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