Thrane and Thrane A S SP3550 UHF Transceiver User Manual SP3550

Thrane & Thrane A/S UHF Transceiver SP3550

Contents

user manual part 2

Equipment and accessories26Accessories you may buyWarning!The display must always be kept away from the body to reduce the RF exposure when body worn.Accessory Part numberDual Position Charger CH3508 403508ALeather Case 403500-2050740
Equipment and accessories27Attaching and removing the belt clipTo attach the belt clip, slide the belt clip upwards into the rails at the back of the radio until it locks.To remove the belt clip, press the projection at the top of the belt clip to release the lock and slide the belt clip downwards out of the rails. Attaching the lanyardDo as follows:1. Take the lanyard through the eye at the top of the radio.2. Put one end of the lanyard through the loop at the other end of the lanyard and pull to tighten. Release lockTop view0740
Equipment and accessories28 0740
Chapter 629TroubleshootingDisplaying errorsSome errors result in an error message in the display. These error messages are listed below.Display text Problem Type ActionsErrEMPTY BATThe battery voltage is below a critical level, where further operation would damage the battery.Severe. Radio is non-functional.Change/recharge the battery.ErrHW ERRHardware error. Severe. Radio is non-functional.Service required.ILLEGALContext fails operation. This text will appear on the following occasions:•Multiple watch is selected on channel 16, or in channel regions where it is not allowed. • High power is selected on a channel where it is prohibited.• Transmission on blocked channelsFail operationConsider operation in a different context.0730
Troubleshooting30 0730
Appendix A31Technical specifications Technical data SP3550GeneralItem SpecificationRX frequency range 440.000 - 470.000 MHzTX frequency range 440.000 - 470.000 MHzModulation 25 kHz 12.5 kHz16K0G3E8K50G3EPower supply 7.2 VDC Li batteryCurrent drain at 5 W TX 1.8 ACurrent drain at 1 W TX 0.9 ACurrent drain RX max audio 0.25 AAntenna port 50 ohmBattery Lithium-Ion, 1800 mAh rechargeableOperating temperature -20°C to +55°CWater ingress protection IP67Frequency stability Better than ±1.0 kHzWeight with battery 340g0740
Technical specifications32TransmitterReceiverItem SpecificationRF output power, landmobile 4.8 W ±1 dB / 0.3 W ±1 dBRF output power, maritime 1.8 W radiated / 0.3 W radiatedMax deviation 25 kHz 12.5 kHz±5 kHz±2.5 kHzSpurious emission < 0.25 µWAdjacent channel power 25 kHz 12.5 kHz> 70 dB> 60 dBItem SpecificationSensitivity (20 dB SINAD) -117 dBm typicalIntermodulation EN 300 720 EN 300 086Better than68 dB65 dBSpurious response > 70 dB0740
Technical specifications33Adjacent channel selectivity 25 kHz 12.5 kHz> 70 dB> 60 dBAudio output, internal 0.25 W at 10% dist.Audio output, external 0.25 W/8 ohmItem Specification0740
Technical specifications34Battery life guidelinesBattery (rechargeable)During daily use, always keep the battery fully charged and away from hot areas.Keep the battery terminals dry and clean.Never discharge beyond the specifications of the battery.Operation/Standby time depends on usage. Generally, the more the radio is transmitting, the faster it will drain the battery. Also, the “Hi” power setting will drain the battery faster than the “Lo” setting.Approximate figures are:• A battery can be stored for 4 to 6 month at 25°C if charged to 25%.• The battery will normally last for 5 to 9 hours of use on a fully charged battery. Note New batteries should be placed in the charger for minimum 12 hours first time.0730
Technical specifications35Dimensional drawing, transceiver0730

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