| Service Bulletin # |
Topics |
Product Description |
Product Model Numbers |
| SB-0055 |
Product manufactured after November 30, 2011 is not compatible with UDB flashing firmware revisions below v1.7.0.0. |
Firmware Flashing Software v1.7.0.0 for UDB Flash Memory Replacement |
- MT-4E family of products
- UIC products
|
| SB-0054 |
30W VHF Amplifier Transistor input power was 4W; new version input power is 6W.
IMPORTANT: Read front panel label. |
30W VHF Amplifier - Transistor Change from Max. 4W Input Power to Max. 6W |
- AMP-2/150-30-00
- AMP-2/145-30-00
- AMP-2/155-30-00
- AMP-2/170-30-00
|
| SB-0053 |
MT-3 crystal radios are not compatible with motherboard (MB) v7 subracks. |
Enabling MT-3 Crystal Operation for SR-39-1 with v7 Motherboard |
- SR-39-1 (PCB 50016-07 or newer)
|
| SB-0052 |
Some MT-4E receivers exhibit minor desense when a green-ended RJ45 cable is connected. |
Replace RJ Cable - Minor Desense Issue with MT-4E Receivers |
- CBLC46-12506015
- CBLC46-12506020
- CBLC46-12506025
- CBLC46-12506032
- CBLC46-12506042
- CBLC46-12506050
|
| SB-0046-1-0-0 |
MT-4D transmitters not changing channels or locking up during short calls; MT-4E transmitters slow to respond |
CI-RC-4M Firmware Versions |
|
| SB-0041-1-0-0 |
MT-4E Transmitters with an encryption module installed will not switch to secure mode when Local control is enabled. |
CI-BC-4E Clear / Secure switching while in Local mode - CI-BC-4E base control module |
- CI-BC-4E-00 with switch (PCB 50139-02)
|
| SB-0029-1-0-0 |
Trouble changing channels with tone remote adaptor from a non-Telex/Vega tone remote. |
MT-4 Base Control Module |
- CI-BC-4E-00 (prior to s/n 10190)
|
| SB-0022-1-0-0 |
Fails to generate test pattern for testing C4FM Modulation Fidelity |
All MT-4D TX's |
|
| SB-0018-1-1-0 |
Paging Modulator TCXO Short |
Paging Modulator Card
(Units with Raltron OCXOs with date codes less than 0610) |
|
| SB-0016-1-0-0 |
Fails to change channel until second PTT |
All MT-4D Radios |
|
| SB-0015-1-0-0 |
RSS MT-4D will display model number error when trying to read/write to MT-4D unit |
All P25 Radios |
- All MT-4D Radios
- All MT-4R Radios
|
| SB-0013-1-0-0 |
RSS MT-4D will display runtime error when using USB to Serial adapter |
P25 Module Programmer |
|
| SB-0012-1-0-0 |
New Firmware upgrade to recognize Hexadecimal switch in MSB position |
Channel Programmer |
|
| SB-0011-A |
Component failure |
Paging Modulator Card |
|
| SB-0010-A |
P25 Module Programmer Intermittent Electrical Problems |
P25 Module Programmer |
|
| SB-0009-1-1-0 |
Torque settings to correct loose RF Amplifier Board cap screws |
VHF 30 W Power Amplifier |
|
| SB-0008-A |
Fixing lock-up problem when the TX is powered up |
MT-4D Receivers programmed with RSS4D-R version 1.1 |
- VR-4D150-R0-00
- VR-4D420-R0-000
- programmed with RSS4D-R version 1.1
|
| SB-0007-A |
8 W Amp Power output alarms |
VHF 8 W Amplifier included in the MT-3 VHF TX |
|
| SB-0006-A |
Power connection failure |
VHF, UHF 30 W power amps shipped prior to April 1995 |
|
| SB-0005-A |
8W Amp modification to prevent oscillation |
8W 400 MHz TX Amplifiers |
- A23-UPA420-08
- A23-UPA460-08
- UT-3/420-CX0X00
- UT-3/460-CX0X00
- UT-3/460-SXCX00
|
