Specifications
The SMH 4000 meets or exceeds the following specifications:
General
Available Channels: . . . . . . . . . . . . . 36
Frequency Range:
1 50 MHz to 1 74 MHz
Power Source: .
. 1 3. 6 VOC (negative groun d on ly)
Size: . . . . . . . . .... .
Weight: .... .... . . .
. 2
.05"H x 5.5"W x 7.5"0 (52m m x 1 40mm x 1 90mm)
. 5.0 lb. (2. 3 kg )
Current Drain @ 13.6 VOC:
TX:.
RX: . . . . . . . .
.
SQ: . . . ..... .
Operating Temperature Range: .
Channel Spacing: . .
Chan nel Resolution: ..
Frequency Control: . .
Frequency Resolution:
Transmitter
RF Output (variable to 50%): . . . . . . .
Operating Bandwidth without Degradation:
Frequency Stability: . . .
Modulation: . . . . . . .
Spurious and Harmonics:
FM Hum and Noise: . . .
Modulation Frequency Response:
Audio Distortion: . . . . . . . . . .
Receiver
Modulation Acceptance: . . . . . . . . . .
Operating Bandwidth without Degradation:
Sensitivity:
20 dB Quieting:
1 2 dB Sinad: .
Squelch: . . . .
Selectivity: . . . . . . .
Intermodulation Rejection:
Frequen cy Stability: .
Spurious Response: .
Image (greater than):
Audio Output: . . .
.
. 8.0 A
. 1. 0 A
. 600 mA
. -30° C to +60° C
. 30 kHz
. 5.0 kHz
. Synthesized PLL
. 5 kHz
Conforms to
EIA
RS-1 52-B
. 40W
. 24 MHz
. ±0.0005%
. 16KOF3E
. -70
dB
. -45
dB
. + 1 , -3 dB from 300 to 3000 Hz
. 3%THD@ 1 000Hz, ±3 kHz
Conforms to
EIA
RS-204-C
. 7.5 kHz
. 24 MHz
. 0.35 µV
. 0.25 µV
.0. 1 5µV
. -75 dB
. -70 dB
. ± 0.0005%
. -70
dB
. -80
dB
. 5 W@ 4n,
1 0%
THO
This equipment conforms to
MIL-STD-8100
for rain, salt fog, dust, vibration, and shock.
Specifications are subject to change
without
notice.
Page
2
SMH 4000
December 1 992
Summary of Contents for SMH 4000
Page 20: ...Page 20 SMH 4000 December 1 992 ...
Page 24: ..._TP601 VR602 Logic Board Alignment Points Page 26 SMH 4000 December 1 992 ...
Page 26: ...Page 28 SMH 4000 December 1 992 ...
Page 27: ......
Page 47: ...CC SM 38 Revision 1 SMH 4000 December 1 992 ...
Page 49: ...SMH 4000 Exploded Mechanical View Page 1 8 S M H 4000 I 0 I 0 0 a 3 December 1 992 ...
Page 62: ... I December 1 992 SMH 4000 Earlier Version Logic PCB PD 304AC Component Side SMH 4000 Page 39 ...
Page 72: ......