Disc TN390 5 UHF 900 MHz Tx Codan UT 3 Synthesized Transmitter Discontinued
User Manual: Discontinued Products | LMR & HF Radio | Codan Radio
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DANIELS TECHNICAL NOTES TM ELECTRONICS LTD. MT-3 Radio Systems TRANSMITTER FREQUENCY (MHz) 951.0000 TX NORM OFF KEY TX MIC RF OUT The UT-3/900 transmitter is a low power, synthesized FM transmitter capable of operating in 12.5 KHz (narrowband) or 25 kHz (wideband) channels. The UT-3/900 transmitter operates in one of three frequency bands: 896 to 902 MHz, 928 to 935 MHz, or 935 to 960 MHz. A modular design allows each of the transmitter’s modules, MT-3 Transmitter Main Board, MT-3 Audio Processor, UT-3/900 Amplifier, and OS-3/900 Synthesizer, to be individually assembled and tested. This facilitates construction, tuning and maintenance as well as troubleshooting procedures. The synthesizer module can be programmed to have up to 16 channels exclusive to one frequency band. REFERENCE INPUT DANIELS ELECTRONICS LTD. MADE IN CANADA MADE IN CANADA UT-3/950-SWB3 Specifications Frequency Bands Channel Spacing Transmitter Switching Range RF Output Power Duty Cycle Undesired Emissions (Conducted Spurious) Undesired Emissions (Conducted Harmonics) FM Hum & Noise Ratio (300 Hz - 3.4 KHz) Carrier Frequency Stability Modulation Type VSWR Protection Audio Distortion Output Impedance Operating Temperature Standby Current Transmit Current (3.0 W) 928 - 935 MHz / 935 - 960 MHz 12.5 KHz or 25 KHz Unlimited 0.5 to 3.0 Watts adjustable 100% (-40 °C to +60 °C) < -80 dBc < -80 dBc > 40 dB ± 1.0 ppm (-30 °C to +60 °C) (-40 °C to +60 °C optional) 11K0F3E (FM) or 16K0F3E (FM) < 20:1 (All Phase Angles) < 2.0% @ 25 °C (< 2.5% @ -40 °C to +60 °C) 50 Ω (Type N Connector) -30 °C to +60 °C (-40 °C to +60 °C optional) < 7 mA < 2.00 A Models Available UT-3/930-SWB300 UT-3/930-SNB300 UT-3/950-SWB300 UT-3/950-SNB300 Low Low Low Low Current Current Current Current Synthesized, Synthesized, Synthesized, Synthesized, 25 KHz Bandwidth, 3.0 W, 928 - 935 MHz 12.5 KHz Bandwidth, 3.0 W, 928 - 935 MHz 25 KHz Bandwidth, 3.0 W, 935 - 960 MHz 12.5 KHz Bandwidth, 3.0 W, 935 - 960 MHz Transmitter Operating Frequency The transmitter is initially aligned at the factory for the frequency stamped on the ‘Factory Set Operating Frequency’ label on the front panel. For any frequency change, no re-alignment of the transmitter may be required. To align and / or adjust the transmitter the outer cover needs to be removed, the transmitter needs to be plugged into the subrack via a cable and / or extender card and power must be applied to the system. A 50 Ω dummy load should be connected to the RF output when transmitting. 43 Erie Street Victoria, B.C. Canada V8V 1P8 TN390 Rev 5-0-0 Nov 06 Toll Free Phone: Fax: Canada & U.S.A. 1-800-664-4066 1-877-750-0004 International Phone: 250-382-8268 Fax: 250-382-6139 © Copyright 2006 Daniels Electronics Ltd. All rights reserved. e-mail: web: Internet sales@danelec.com www.danelec.com Page 1 of 2 T h i s p r o d u c t h a s b e e n d i s c o n t i n u e d a n d i s n o l o n g e r m a n u f a c t u r e d b y D a n i e l s E l e c t r o n i c s L td . TN390 UT-3/900 UHF 900 MHz Synthesized Transmitter DANIELS TECHNICAL NOTES TM ELECTRONICS LTD. MT-3 Radio Systems Transmitter Alignment Procedures Audio Processor Alignment: For circuit board version 43-911916 through 43-911923 refer to Technical Note TN130 Audio Processor Tuning Procedure. For other circuit board versions, refer to the appropriate manual. Synthesizer Alignment: No synthesizer alignment is required. B A B B A B A A Amplifier Output Power and Alarm Adjustment: Adjust R27 fully counterclockwise. Turn R8, the output power adjustment, to the desired transmitter output power. Do not exceed 3.0 Watts. The output power alarm is factory set for a 3 dB loss in forward output power. Terminate the transmitter with a 3:1 mismatch load. Monitor pin Z26 and slowly turn R27, the antenna VSWR alarm adjustment, clockwise until pin Z26 goes low. Remove the four front panel screws (A) and four side panel screws (B) to slide the transmitter outer cover off and expose the Main Board, Local Oscillator, Audio Processor Board and Amplifier. Note: For complete alignment procedures, refer to the instruction manual. These notes are for reference only. 43 Erie Street Victoria, B.C. Canada V8V 1P8 Page 2 of 2 Toll Free Phone: Fax: Canada & U.S.A. 1-800-664-4066 1-877-750-0004 International Phone: 250-382-8268 Fax: 250-382-6139 © Copyright 2006 Daniels Electronics Ltd. All rights reserved. e-mail: web: Internet sales@danelec.com www.danelec.com TN390 Rev 5-0-0 Nov 06 T h i s p r o d u c t h a s b e e n d i s c o n t i n u e d a n d i s n o l o n g e r m a n u f a c t u r e d b y D a n i e l s E l e c t r o n i c s L td . TN390 UT-3/900 UHF 900 MHz Synthesized Transmitter
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