Frequency Range:

STR-1671 : 136 to 174 MHz
STR-1672 : 400 to 430 MHz
STR-1673 : 450 to 470 MHz
STR-1674 : 470 to 490 MHz
STR-1675 : 490 to 512 MHz

Channel Spacing: 25 or 12.5 KHz
Preset Channels: 8
Stability: +/- 0.0005% of Fc
Duty Cycle:

Capable of 30 seconds continuous transmit or 25%
continuous transmit/receive duty cycle

Compliance:

Various models available for:
- FCC
- IC, or
- ETSI
type certification. Contact factory for further information.

Type: FM
Rated Deviation:

+/- 5 KHz for 25 KHz Spacing
+/- 2.5 KHz for 12.5 KHz Spacing

Output Power: Selectable between 5, 25, and 30 Watts
Output Protection:

Operating into a 10:1 VSWR of any phase angle will not damage the transceiver

Spurious/Harmonic Output: -70 dB below rated power
Modulation Sensitivity:

Adjustable from 50 mvolt RMS audio input signal for 60% of rated deviation

Frequency Response:

Flat from 300 to 3000 Hz (no pre-emphasis)

Turn-on Time:

Within 25 msec (UHF) or 40 msec (VHF) of keying, radio
reaches 90% of rated output power.

Output SNR: 30 dB minimum fully modulated
Audio Input Impedance: 50 Ohm

Sensitivity: 0.5 uV (12 dB SINAD) minimum
Dynamic Range:

0 to -100 dBm for 23 dB SINAD (1 KHz Tone at 60% dev)

Spurious/Image Rejection: 70 dB minimum
Intermodulation: 65 dB minimum
Selectivity:

70 dB minimum for 25 KHz spacing
60 dB minimum for 12.5 KHz spacing

Recovery Time: 30 msec from removal of key signal
Audio Output:

Adjustable from 60% dev for 1 V p-p output into
600 ohm resistive load

Frequency Response:

Flat from 300 to 3000 Hz (no deemphasis)

Overload Protection:

A +28 dBm input continuous applied to input will not
cause any permanent damage

Platform: Windows compatible PC
Preset Channel Controls:

Frequencies
Bandwidths
Output Power Levels

Interface:

Special control cable from serial COM port to STR-1670

Chassis: ~ 2" High, ~ 6" Wide, and ~ 7" Deep
Weight: 3.3 lbs
Connectors

1 UHF for RF Input/Output
1 25 Pin D (Front Panel) for:
- Programming Interface
- Audio/Data Input/Output
- Preset Channel Selection
- PTT

Primary Power

13.6 VDC ± 15% ( transmit 12.5 A, receive 0.7 A)

MTBF: 25,000 Hours
Operator Adjustments: None
Temperature

-30° TO 60° C (Operational and Storage)

Vibration

2 g rms 5 Hz-300 Hz sinusoidal, 3 axes, continuous

Shock

10 g half sine, 15 msec; 3 axes

Humidity

Up to 100% ‘non-condensing’

Altitude

10,000 feet operating and 40,00 feet non-operating