Midland Radio P25 Transmitter Specifications, Rated RF Output Power Frequency Stability

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Syn-Tech III P25 Portable Radio

OPERATION MANUAL

8.2Transmitter Specifications

TRANSMITTER SPECIFICATIONS

 

VHF

UHF

 

 

 

Frequency Range

136-174 MHz

380-470 MHz

 

 

 

Frequency Separation

Full Bandsplit

Full Bandsplit

 

 

 

Channel Spacing

12.5 / 20 / 25 / 30 kHz

12.5 / 20 / 25 / 30 kHz

 

 

 

Frequency Step

2.5 / 3.125 kHz

2.5 / 3.125 kHz

 

 

 

Rated RF Output Power *

1-5 W

1-5 W

 

 

 

Frequency Stability *

± 2.5 ppm

± 1.5 ppm

(-30°C / +60°C; 25°C ref)

 

 

Modulation Limiting *

 

 

Analog 25 kHz channel

± 5.0 kHz

± 5.0 kHz

Analog 12.5 kHz channel

± 2.5 kHz

± 2.5 kHz

C4FM Modulation Fidelity **

≤ 2 %

≤ 2 %

RMS Error

C4FM Deviation

1800 ±100 Hz

1800 ±100 Hz

Spurious Emissions *

-70 dBc

-70 dBc

(Conducted and Radiated)

 

 

Audio Frequency Response *

 

 

(6 dB/Octave Pre-emphasis

+1, -3 dB

+1, -3 dB

from 300 to 3000 Hz)

 

 

Hum and Noise Ratio

 

 

Analog 25 kHz channel *

≥ 52 dB

≥ 46 dB

Analog 12.5 kHz channel *

≥ 46 dB

≥ 40 dB

Audio Distortion *

≤ 1 %

≤ 1 %

 

 

 

* Measured in the analog mode per EIA-603 under nominal conditions.

** Measured in the digital mode per TIA-102.CAAA under nominal conditions.

62

680-090-2041 Version 5.0

http://www.midlandradio.com

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Contents Midland Syn-Tech III P25 Portable Radio Preface Customer AssistanceImportant Safety Information General Precautions FCC Exposure Statements Patent and Copyright StatementsProduct Features Abbreviations and Acronyms Radİo Controls and Indİcators Table of Contents IntroductionGettİng Started OperationWarranty Statement Package Contents Installing the Battery Getting Started Installing the AntennaInstalling and Removing the Battery Removing the BatteryInstalling the Belt Clip Charging the BatteryRadio Controls and Indicators Side, Top and Front Views Emergency Call Button Channel SwitchButton and Key Functions Alpha-Numeric keypadRight soft key Index Power Adjust long press/Mode Change short press keyKeypad Lock short press/Emergency Reset long press key Monitor long press/Call Wait Option short press keyEntering/Exiting Talkaround Mode Switching Talk GroupEntering/Exiting Unaddressed Voice Call Mode Scan keySetting Current Status Switching to Home Zone and ChannelSwitching Zones Entering Unacknowledged Individual Call ModeTransmitting a Selective Call Sending a Call AlertTransmitting a 2-Tone Call Alpha-numeric Keypad Entry Alpha-numeric Keypad Entry KeysDisplay Icons Syn-Tech III P25 Portable Radio Basic Operation Turning the Radio On and OffZone selection using # key Selecting ZonesZone selection using Menu Channel switch selection Selecting ChannelsAnalog Reception Receiving SignalsDigital Reception Transmitting to Other Radios Analog TransmissionsDigital Transmissions 14 Digital transmit displayTime Out Time Busy Channel LockoutSelecting Transmit Power Power Adjust/Mode Change key for more than one secondSelecting Digital Talk Group Channel Parameters Groups Selecting Talkaround Transmit Mode Enter to TalkaroundMonitoring Channels 22 Monitoring channel23 Monitoring all talk groups and NACs Selecting Digital Call Wait Option Short pressScanning Channels Transmitting While Scanning26 Pressing PTT while scan is paused Editing the Scan List 27 Editing the zone’s scan listLocking the Keypad 28 Locking the keypadSwitching to the Home Zone and Channel 29 Switching to the home zone and channelAdvanced Operations Receiving Emergency CallsTransmitting Emergency Calls Press of the Keypad Lock key or by turning the radio offReceiving Digital Individual Calls Receiving Unacknowledged Individual CallsReceiving Acknowledged Individual Calls 34 Receiving acknowledged individual callTransmitting Digital Individual Calls Transmitting Unacknowledged Individual CallsTransmitting Acknowledged Individual Calls 37 Transmitting acknowledged individual call39 Exiting unaddressed call mode Transmitting Digital Unaddressed CallsTransmitting Digital Telephone Interconnect Calls 40 Initiating telephone interconnect requestReceiving a Digital Call Alert Transmitting a Digital Call AlertReceiving and Sending Non-voice Messages Receiving SMS Messages Menu SMS Received MessagesSending SMS Messages 45 Sending SMS messageReceiving Predefined Messages 46 Received predefined messageSending Predefined Messages 47 Sending predefined messageSetting Present Status 9.6 Receiving StatusSending Status Status Request will not appear on the Status menuRequesting Status 51 Requesting statusChannel Programming 52 Channel programmingAnalog Mode Menu Tree Menu OperationSoftware Digital Mode Menu Tree Predefined Messages Channel Parameters Accessories Accessory Midland P/NYour radio does not require any periodic maintenance Troubleshooting Problem Possible CAUSEs SOLUTIONsWeight with antenna and without battery Symbol RateDimensions without battery HxWxL ModulationESD MIL-STD 810C MIL-STD 810D MIL-STD 810E MIL-STD 810FVHF UHF RMS Error Transmitter SpecificationsRated RF Output Power Frequency Stability Modulation Limiting Analog 25 kHz channelWarranty Statement Parretta Drive Kansas City, MO