MT-3 FM Transmitter Mainboard Instruction Manual
IM20-MT3TXMN
Revision History
52
Revision
Date
Action #
Description
4-2-0
(cont)
829
Update Parts List
836
Update C56 to 47nF for 950MHz transmitters.
4-3-0
Jun 05
836A1
CO 836 expanded to include the UT-3/930-SXB300 Audio Processor
model selected components.
836A2
CO 836 expanded to include the UT-3/930-SXB300 with this main
board.
846
Update Audio Processor Component Layout and the Audio
•
Processor Component Layout Selection Table.
Alignment procedures updated.
•
---
Revision History older than 7yrs removed from publication.
•
Top level mechanical parts moved to the top level Transmitter IMs;
•
– for all VHF Synthesized Tx mech parts consult IM20-VT3150
– for all UHF Synthesized Tx mech parts consult IM23-UT3400
– for all Crystal Tx mech parts consult IM21-xT3C
4-4-0
Dec 05
6056
OC-3 Product discontinued. Remove references.
6113
VT-3/140 Audio Processor select value table updated.
6115
VT-3/160 Audio Processor select value table updated.
4-5-0
Feb 06
6129
UT-3/420-SXCX00 Audio Processor select value table updated.
6130
UT-3/460-SXCX00 Audio Processor select value table updated.
---
Audio Processor Parts list expanded to display all models and their
band selected components.
5-0-0
Feb 2010
Revision history older than seven years has been removed.
6127
Improve the Low Band transmitter’s standard subtone response.
6154
VHF and UHF Audio Processor Max Dev tuning change.
6344
Remove all references specific to the MT-3 800/900 MHz product.
6347
Discontinue the MT-3 UHF 400 and VHF 150 modules.
updated 43-920917 CLD – Top and schematic
•
6437
VT-3H045 Temp compensation adjustment.
Updated the MT-3 VHF Low Band Performance Specifications
•
6452
VT-3H035 Temp compensation adjustment.
3682
Update operating voltage to nominal (10–17 V)
•
Change document title to include MT-3
•
---
Update company logos and trademark information
•
Apply Daniels Style Guide
•
Update BOMs, schematics and CLDs
•
