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The BTR-300 Single Channel VHF Wireless Intercom Base Station with A4F Headset Jack from Telex includes one transmit and four receive channels designed to operate in full duplex or simultaneous two-way communications with connection capability for up to four TR-300 belt pack transceivers (not included).
It is designed for portable two-way communication with the capability for interface to other audio systems. It also has the ability to interface
with most wired intercom systems. The system operates on selected
frequencies within the 150 to 216MHz band.
Lastly, the unit is wrapped in an all metal case for superior shielding.
An extremely flexible unit that has the capability to communicate at one time with up to
four portable stations and wired stations (intercom and / or other audio source)
Powered by an external AC supply via the power jack on the rear of the unit. It can
also be powered by any 12V AC / DC 700mA source
Intercom connections with the ability to interface with most wired intercom systems
RF light indicator for each portable station
All metal case for superior shielding
Table or rack mountable
Unique audio shaping and circuitry and superior RF design
Simultaneous operation and support of up to four base stations and 16 belt packs
In the Box
Telex BTR-300 Single Channel VHF Wireless Intercom Base Station w/ A4F
Table of Contents
Transmit & receive:
RF frequency range: 150-216MHz
RF frequency stability: Crystal controlled, 0.005%
RF power output: 50mW typical
FM, 3KHz deviation
115 micro-seconds pre-emphasis
Modulation limiter: Internal compressor
Modulation frequency range: 300-5000Hz ±2 dB
Dual conversion super heterodyne, FM
RF sensitivity: Less than 0.6 μV for 12 dB SINAD
IF selectivity: 3 dB at 30kHz (4 pole monolithic filter)
Image rejection: 65 dB or better
Squelch quieting: 90 dB
Squelch threshold: 1.0 μV (internal)
Signal to Noise Ratio
12V AC/DC at 360 mA
Intercom output: 330 mV (low) or 1 V (high) RMS into 300 ohms load typical (at rated deviation)
Auxiliary output: 2 V RMS into 600 ohms load typical (at rated deviation)
Local headset output: 32 mV maximum output into 600 ohms
Speaker / local monitor output (into 8 ohms): 2W (at rated deviation)