User's Manual

C-5000 COMMUNICATION MANAGEMENT CONTROLLER
INSTALLATION MANUAL
Publication No. 150-041118 Page B-1
Rev. C Appendix B
May 2006
APPENDIX B
RAID OH-58 UPGRADE OVERVIEW AND CABLING INFORMATION
1.
RAID OH-58 Upgrade Overview and Cabling Information
A. Scope
The following paper describes the process to upgrade the RAID OH-58 aircraft with the RT-5000
Transceiver. Wulfsberg Electronics has developed a set of adapter cables and mounting plates that
allow the aircraft to modified in the field without extensive re-wiring or mechanical modification to the
airframe. The estimate of time to perform the modification is less than 4 hours. Actual AWR
instructions can only be obtained via U.S. Army resources.
B. Modification Process
Figure B-1 shows the aircraft in its current configuration. Notice the C-5000 control head controls
three single band Wulfsberg transceivers, the RT-30, RT-138F, and RT-406F. Since the 29.7-50
MHz band is rarely used, it has been decided that the RT-30 can be removed and replaced by the
RT-5000. The RT-5000 covers 29.7-960 MHz and thus can perform all the functions of the RT-30
plus can be the additional radio in a relay along with the RT-138F or RT-406F(e.g. body wire relay).
In addition, it allows for a backup for the VHF-AM and UHF-AM radios already in the aircraft. Also,
the RT-5000 has the capability of communicating on the 800 MHz "Community" channels. These are
special frequencies set up in every trunking system for the purpose of communicating with non-
trunking radios. In this paper, this system is labeled "Configuration #1" (See Figure B-2).
The federal government along with some state and local public service organizations are moving to
digital communication systems known as P25 (APCO-25). There are models of the RT-5000 that can
perform this digital modulation in the VHF 138-174 (Federal Government), UHF 403-470 (Federal &
State/Local), UHF 450-512 (State & Local), and 800 MHz band. However, the C-5000 that is used
with this model of radio is limited to controlling two transceiver systems. This system is labeled
"Configuration #2" (See Figure B-3). Notice that the RT-138F and RT-406F have been connected
in parallel with a special adapter cable Wulfsberg provides. This allows both radios to still available,
however when connected in this manner, only one of the two radios can be channeled at any given
time. The easiest way to think of this is that transceiver #2 is "Dual Band" radio, VHF and UHF.
Note: The operator can only monitor the RT-138F or the RT-406F at any one time - not both at the
same time.
To upgrade the aircraft, the user must first determine the Radio Configuration (#1 or #2) that will be
needed. Second, all components must be ordered from Wulfsberg. If a C-5000 or RT-5000 needs to
be upgraded, the units must be sent to Wulfsberg. Once the all the system components are
delivered, the operator must perform the installation per ARMY AWR instructions. Basically this
involves the following steps:
(1) Remove the RT-30 Transceiver, its mounting plate, antenna, and antenna tuner
(2) Install Adapter Cable #1
(3) Install the RT-5000 mounting tray and adapter plate. All holes lineup with existing holes of
the RT-30 mounting tray so no drilling should be required.
(4) Install the FC-5000 on the adapter plate and mount in the existing holes of the previously
removed RT-30 antenna tuner. No drilling should be required.