Data Transceivers - Model 3701-00
Data Transceivers - Model 3701-00

 

 

FEATURES:

 

  • Programmable Narrow or Wide Band
  • Factory Alignment for Peak Performance
  • Waterproof Casing
  • Programmable up to 16 Channels

 


 

DESCRIPTION:

The Data Transceiver - Model 3701 is designed for use with data generating devices using Audio Frequency-Shift Keying (AFSK) type modulation systems. The Data Transceivers provide outstanding frequency stability and control.

The Data Transceivers come in VHF and UHF frequency ranges and features 16 programmable channels. Each Data Transceiver has extremely short turn-on time that conserves power in battery operated systems. Multiple functions include 1200 to 9600 baud rates, and AC and/or DC audio coupling. When used in a repeater, the transmit frequency typically is specified as the receive frequency when using the Data Transceiver in an ALERT/ALERT2 Transmitter.

The Data Transceiver, with 16 dip switch selectable channels, is the standard transceiver featured in High Sierra Electronics' ALERT/IFLOWS transmitters and repeaters. For certain applications, however, other Data Transceivers or technology may be more appropriate. Contact us to help recommend the Data Transceiver solution best suited to a specific situation. These Data Transceiver alternatives include Spread Spectrum, RS-232 radio modems, GOES radio modules, crystal controlled radios, and telephone modems.


 

SPECIFICATIONS:

Transmitter:
Output Power ...........................   5/1 W
FM Hum/Noise ...........................   40 dB (12.5 kHz), 40 dB (25 kHz)
Modulation Sensitivity ...........................   100 mV RMS (60% peak dev)
Spurious Emissions
     Model 3701-00/-02 ...........................   -36 dBm
     Model 3701-03 ...........................   60 dB
Frequency Deviation ...........................   ±2.5, Min. ±1.9 kHz (12.5 kHz)
±5.0, Min. ±3.8 kHz (25 kHz)
Adj. Channel Power ...........................   70 dB (25 kHz), 60 dB (12.5 kHz)
Audio Response ...........................   +1, -3 dB from 6 dB per octave pre-emphasis and characteristic 300~3000 Hz
Receiver:
Sensitivity
     Model 3701-00/-02 ...........................   0.30 µV (12.5 kHz), 0.28 µV (25 kHz)
     Model 3701-03 ...........................   0.25 µV (12.5 kHz), 0.35 µV (25 kHz)
Selectivity
     Model 3701-00/-02 ...........................   65 dB (12.5 kHz), 70 dB (25 kHz)
     Model 3701-03 ...........................   50 dB (12.5 kHz), 60 dB (25 kHz)
Intermodulation
     Model 3701-00/-02 ...........................   -70 dB
     Model 3701-03 ...........................   -65 dB
Spurious Emissions
     Model 3701-00/-02 ...........................   -57 dB (9 kHz to 1 GHz), -47 dB (1 GHz to 4 GHz)
     Model 3701-03 ...........................   -70 dB
RX Hum/Noise
     Model 3701-00/-02 ...........................   -40 dB (12.5 kHz), 40 dB (25 kHz)
Spurious/Harmonic ...........................   65 dB
Response Time ...........................  
Audio Output Power
     Model 3701-00/-02 ...........................   0.5 W
     Model 3701-03 ...........................   2.5 V @ 600 Ω
Squelch Attack Time
     Model 3701-00/-02 ...........................   <20/40 mS (RSSI/Analog), <10/30 mS (RSSI/Analog), +20 dB
Squelch Decay Time
     Model 3701-00/-02 ...........................   5 mS (min), 20 mS (max)
General
Frequency Range ...........................   VHF 142 to 174 MHz, UHF 450 to 490 MHz, and UHF 400 to 430 MHz
Channel Spacings ...........................   2.5/15 kHz (US only), 12.5/15 kHz (Outside the US)
PLL Channel Step ...........................   2.5 kHz, 5 kHz, 6.25 kHz
Lock Time ...........................  
LED Status Model 3701-00/-02 ...........................   Yellow=Busy, Green=Receive/Decode, Red=Transmit
Operating Voltage ...........................   9 to 18 VDC, 12 V nominal
Current Draw ...........................   Tx Hi: 2 A, Tx Lo: 1 A, Standby 65 mA
Temperature Range ...........................   -22° to 140° F (-30° to 60° C)
Dimensions ...........................   4.6x2.4x1.4 in(11.7x6.2x3.5 cm) HxWxD
Weight ...........................   9.4 oz (267 g)

 

ORDERING GUIDE:
HSE Warranty
General Terms and Conditions

Model 3701-00 ......... Data Transceiver, VHF 142 to 174 MHz
Model 3701-02 ......... Data Transceiver, UHF 450 to 490 MHz
Model 3701-03 ......... Data Transceiver, UHF 400 to 430 MHz

OPTIONAL:
Model 3701-15 ......... Data Transceiver Programming Kit w/Extender Board, Includes: Power Supply, Cable, and Software


 

RELATED PRODUCTS:

3580 Remote Series ......... Flashing Beacon Controllers
3580 Master Series ......... Environmental Monitoring Station Controllers
Model 3306-00 ......... ALERT/IFLOWS Data Transmitter
Model 3306-02 ......... ALERT/IFLOWS Data Transmitter with ALERT2 Format
Model 3316-00 ......... ALERT/IFLOWS Data Transmitter in NEMA Enclosure


 

SUPPORT:

Data Transceivers - Model 3701-00: Datasheet