Telex BTR-300 User's Manual
Contents
1. pack Allows optional NiMH batteries to be recharged without removing them from the beltpack Line Drawing Talk O M Gain Push Twice to Latch olume Le Oca BTR 300 amp TR 300 Specifications Overall RF Frequency Range 150 216 MHz RF Frequency Stability Crystal Controlled 0 005 TR 300 Power Requirements 6 AA Cells Alkaline NEDA MN 1500 Nickel metal hydride optional TR 300 Current Drain typical 82 mA Transmit Antenna Ya wave wire attached Receive Antenna Ya wave wire attached Input Power minimum 12V AC DC at 360 mA Intercom Output 330 mV Low or 1V Hi RMS into 300 Q load typical at rated deviation Intercom Input Gain Minimum 300 mVrms typical for rated deviation Auxiliary Output 2 Vrms into 600 Q load typical for rated deviation Auxiliary Input Gain Maximum 60 mVrms typical for rated deviation Local Headset Input 2 mVrms input nominal 1 5 mVrms input at compression Dynamic Local Headset Output 32 mV maximum output into 600 Q Speaker Local Monitor Output into 8 Q 2 Watts at rated deviation Temperature Range 4 F to 130 F 20 C to 55 C Transmit RF Power Output 50 mW Typical Modulation FM 3 kHz deviation 115 micro seconds Pre emphasis Transmit Antenna Ye wave Supplied Modulation Limiter Internal Compressor Modulation Frequency Range 300 to 5000 Hz 2 dB Radiated Harmonics an2. Number 7129SP TR 300M VHF Wireless Transceiver in mirror image frequency with A4M headset connector Catalog Number 7127M XXX This specifications information is preliminary and is subject to change without notification Brand names mentioned are the property of their respective companies
3. TELEX RadioCom wess isa wor BTR 300 amp TR 300 Single Channel VHF Fixed Crystal Wireless Intercom The Telex RadioCom models BTR 300 and TR 300 were specifically designed to provide the user with a highly flexible wireless two way communication system with the capability to interface with a wired intercom system and other auxiliary audio At the BTR 300 operator s command the remotes may communicate with each other with a wired intercom system or with an auxiliary system The BTR 300 base station with its one transmit and four receive channels is designed to operate in full duplex simultaneous two way communications with up to four TR 300 beltpack transceivers The system operates on selected frequencies within the 150 216 MHz band The BTR 300 system is fully compatible with a number of other wired intercom manufacturers units As many as four TR 300 beltpack transceivers can operate in a fully duplex network with one Telex RadioCom model BTR 300 base station Unique audio shaping and circuitry and superior RF Full Duplex Operation design Allows users to talk and listen simultaneously for more Front End Filtering natural communications Band Allocation All metal case for superior shielding Beltpacks can operate at ranges of up to 2000 feet line Simultaneous operation and support of up to four base of sight stations and 16 beltpacks Extended Battery Life Push to Talk with Lock to Talk feature switch on belt In Pack Charging
4. d Spurious Emissions 45 dBC exceeds FCC Specifications FCC Type Accepted Under Parts 90 amp 74 Contact Information Telex Communications Inc 12000 Portland Avenue South Burnsville Minnesota 55337 Telephone 877 863 4169 Fax 800 323 0498 Form Number LITOOO268000 RevA Date August 2008 Receiver Type Dual Conversion Superheterodyne FM RF Sensitivity Less than 0 5 uV for 12 dB SINAD IF Selectivity 3 dB at 30 kHz Ceramic Filter Image Rejection 70 dB or better Squelch Quieting 90 dB Squelch Threshold 3 0 uV Internal Signal to Noise Ratio 90 dB Audio Output 32 mW into 600 Q Headset Distortion Less than 1 at Rated Output Product Dimensions Weight BTR 300 15 75 W x 1 75 H x 10 5 D 40cm x 4 5cm x 26cm 4 5 Ibs 2 kg TR 300 4 25 W x 4 125 H x 2 0 D 10 79cm x 10 49cm x 5 08cm 13 oz 369 g with batteries Shipping Dimensions Weight BTR 300 17 W x 5 50 H x 20D 43 2cm x 14cm x 50 8cm 10 Ibs 6 oz 4 7 kg TR 300 7 W x 3 H x 10 D 17 8cm x 7 6cm x 25 4cm 1 Ib 454 g Ordering Information BTR 300 VHF Wireless Base Station with A4M headset jack Catalog Number 71276 XXXX BTR 300 RTS VHF Wireless Base Station with A4F headset jack Catalog Number 71280 XXXX TR 300 VHF Wireless Transceiver with A4M headset jack Catalog Number 7127 XXXXX TR 300 SP VHF Wireless Transceiver with A4M headset jack and special order frequencies Catalog
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