User Manual
MT-4E VHF & UHF Receiver & Transmitter Instruction Manual
IM08-MT-4E-TXRX Project 1106
General Information
5
TRANSMITTER PERFORMANCE SPECIFICATIONS
General
Frequency Range: 136 to 174 MHz / 406 to 470 MHz / 470 to 520 MHz / 799–869 MHz
Carrier Frequency Stability: ± 1.0 ppm (VHF) / ± 0.5 ppm (UHF) / 1 to .1 ppm 799–869 MHz
Channel Spacing: 12.5, 15, 25 & 30 kHz / 12.5 & 25 kHz 799–869 MHz
Channel Selection: In 2.5, 5.0 or 6.25 kHz increments selected with Radio Programming
Software Package
Number of Channels: Preset capability for 2 banks of 16 channels
Compatibility: MT-3 and MT-4 Series Radio Systems; P25 interoperable*
RF Output Power: 0.5 to 8.0 W Continuous / 0.5 – 4.0 W 799–869 MHz
Emission Designators: Analog: 11K0F3E (Narrowband); 16K0F3E (Wideband)
Digital Paging: 9K2F1D
P25 Digital: 8K10F1E (Digital Voice); 8K10F1D (Digital Data)*
System Impedance: 50 Ω; Type N connector
Duty Cycle: 100 %; Continuous operation
Undesired Emissions:
(Adjacent Channel Power Ratio)
< -70 dBc; Analog
< -70 dBc; Digital*
-80 dBc; 799–869 MHz
Intermodulation Attenuation: < -45 dB Analog
< -45 dB Digital*
Undesired Emissions:
(Conducted Spurious)
< -70 dBc @ 8 W
< -80 dBc @4.0 W & 799–869 MHz
VSWR Protection: < 20:1 VSWR at all phase angles
Operating Temperature Range: -30˚C to +60˚C
Operating Humidity: 95 % RH (non-condensing) at +25°C
Operating Voltage: +13.8 VDC Nominal (range +10 to +17 VDC)
+9.5 VDC Regulated
Transmit Current: < 1.7 A at 2 W RF Power Output
< 2.8 A at 8 W RF Power Output
< 1.8 A @ 4 W RF Output
Stand By Current: < 75 mA (no encryption modules installed)
< 105 mA (with encryption modules installed)
Front Panel Controls: Transmitter power On (Norm) / Off / Key Tx
Mic Mode: Analog / Digital
Analog & Digital Transmit LED indicators
PTT Time-Out-Timer: Programmable from 15 to 465 sec. (in increments of 1 sec.) or
innity (Default 300 sec.), using Radio Service Software package
Audio Input: Balanced, 600 Ω or optional unbalanced input
(600 Ω or 15k Ω selectable input impedance)
Audio Frequency Response: Pre-emphasis; +1, -3 dB (300 to 3000 Hz)
Audio Deviation Limiting: ± 2.5 kHz Narrowband, ± 5.0 kHz Wideband
Audio Distortion: < 3 % THD; 1 kHz tone at 1.5 kHz or 3 kHz deviation
FM Hum and Noise Ratio: < -34 dB (0.3 to 3.4 kHz De-Emphasis Off)
CTCSS Decode / Encode: Programmable to any of 42 CTCSS tones.
DCS Decode / Encode: Programmable to any of 83 DCS sequences. Normal or inverted
DCS can be selected. Turnoff code optional.
IC Certication No.: 142A-VT4E150 (VHF) / 142A-UT4E450 (UHF)
* P25 Digital specications are applicable only for modules with the P25 Digital rmware upgrade.