Telex TR-300 Telephone User Manual


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BTR-300 & TR-300 Specications
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
¼ wave wire (attached)
Receive Antenna
¼ wave wire (attached)
Input Power (minimum)
12V AC/DC at 360 mA
Intercom Output
330 mV (Low) or 1V (Hi) RMS into 300 Ω load typical (at
rated deviation)
Intercom Input (Gain Minimum)
300 mVrms typical (for rated deviation)
Auxiliary Output
2 Vrms into 600 Ω 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 Ω
Speaker/Local Monitor Output (into 8 Ω)
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
⅝ wave (supplied)
Modulation Limiter
Internal Compressor
Modulation Frequency Range
300 to 5000 Hz ±2 dB
Radiated Harmonics and Spurious Emissions
-45 dBC, exceeds FCC Specications
FCC
Type Accepted Under Parts 90 & 74
Receiver
Type
Dual Conversion Superheterodyne, FM
RF Sensitivity
Less than 0.5 μV 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 μV (Internal)
Signal-to-Noise Ratio
90 dB
Audio Output
32 mW into 600 Ω (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 lbs (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 20”D (43.2cm x 14cm x 50.8cm),
10 lbs 6 oz (4.7 kg)
TR-300
7”W x 3”H x 10”D (17.8cm x 7.6cm x 25.4cm),
1 lb (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
Number: 7129SP
TR-300M • VHF Wireless Transceiver in mirror image
frequency with A4M headset connector • Catalog
Number: 7127M-XXX
This specications information is preliminary and is subject to change without notication.
Brand names mentioned are the property of their respective companies.
Contact Information
Telex
Communications, Inc.
12000 Portland Avenue South
Burnsville, Minnesota 55337
Telephone: 877-863-4169
Fax: (800) 323-0498
Form Number: LIT000268000 Rev A
Date: August 2008
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