Midland Radio SP-300 Frequency Bands, Dimensions, Weight, Transmitter, Audio Frequency Deviation

Page 5

MAXON

SP-300 HAND HELD

FREQUENCY BANDS

 

RX

TX

VHF: V2

148.000 - 174.000 MHz

148.000 - 174.000 MHz

UHF: U2

440.000 - 470.000 MHz

440.000 - 470.000 MHz

DIMENSIONS

Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (141mm)H x (58 mm)W x (37 mm)D

WEIGHT

Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225 grams

With 1350 mAh Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 425 grams

TRANSMITTER

Carrier Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . High: 5.0W Low: 1.0W

AUDIO FREQUENCY DEVIATION

Without Subaudio Tone Modulation:

25 kHz Channel Spacing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Max. ±5.0 kHz 12.5 kHz Channel Spacing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Max. ±2.5 kHz

With Subaudio Tone Modulation @ 10 % Peak Deviation

25 kHz Channel Spacing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Max. ±5.0 kHz 12.5 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Max. ±2.5 kHz

Audio Frequency Response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Within +1/-3dB of 6dB octave

ADJACENT CHANNEL POWER

25 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . < 70 dBc 12.5 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . < 60 dBc

Conducted Spurious Emission. . . . . . . . . . . . . . . . . . . . . . . . . . . . < -60 dBc

Page -2-

May 2001

Image 5
Contents Service Manual Table of Contents Board Layout Exploded View Temperature Range SpecificationsGeneral Current ConsumptionWeight DimensionsAdjacent Channel Power Frequency BandsPeak Deviation @ 1 kHz Nom. Dev +20dB ReceiverRX Tone Demodulation Characteristics SP-300INTRODUCTION FeaturesBusy Channel Lockout VCO Lock Time Description Description of ControlsDigital Circuits Theory of OperationRF Circuits RF Circuits PLL Synthesizer KHz Band Pass Filter Squelch mute CircuitNoise Detector Speaker Audio AmplifierRemoving & Replacing the Belt Clip Maintenance and RepairRemoving the belt clip To replace the belt clipTo remove the battery Removing & Replacing the BatteryTo replace the battery To remove the PTT assemblyRemoving & Replacing the Antenna & Control Knobs Removing & Replacing the ACCES- Sory ConnectorTo replace the Back Cover Removing & Replacing the Back CoverTo remove the Back Cover To remove the Main Board Removing & Replacing the Main BoardTo replace the Main Board Removing & Replacing the Speaker Component ReplacementRemoving & Replacing the DAUGH- TER Boards Surface Mounted Integrated Circuit Replacement Surface Mount Component ReplacementCloning Alignment ProcedureProgramming RX VCO S.G. @ 1kHz Audio Test Equipment SetupTP1 Alignment Points DiagramSymptoms Causes Counter Measures Troubleshooting GuideMain Circuit Voltage ChartsReceive State Transmit State REF# Description PART# SP-300 Series UHF & VHF Digital Section Parts List-30- May REF # Description Replacement Modules SP-300 Series VHF RF Section Parts List-32- May -33- May SP-300 Series UHF RF Section Parts List -35- May -36- May -37- May KTA1504SY Component Pinout-39- May Base Diagram PIN Description UHF Power AMP VHF Power AMPVHF FRONT-END UHF FRONT-ENDUHF V.C.O VHF V.C.OFuse ACC-200 BatteryTcxo SP-300 Series VHF RF Schematic UHF RF Schematic -47- May Board Layout Top Main Board Assembly 416121B -49- May