Telex manual BTR-300 & TR-300 Specifications, Contact Information, Ordering Information

BTR-300 & 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

¼wave wire (attached)

Receive Antenna

¼wave 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 Specifications

FCC

Type Accepted Under Parts 90 & 74

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

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

3.0μV (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),

4.5lbs (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 specifications information is preliminary and is subject to change without notification.

Brand names mentioned are the property of their respective companies.