TriCom AM-SAT-50, Operator'S Manual, Page: 13 / 20

AM-SAT-50 OPERATOR’S MANUAL
90400-01078_B
2-3
2.3.3 Operating Procedures
2.3.3.1 Normal Operation
In normal operation, the AM-SAT-50 provides receive gain and transmit power
amplification for radios operating in the UHF SATCOM band.
NOTE: Operating outside of the UHF SATCOM frequency bands will not harm the system,
however, the equipment may not appear to be operating correctly and proper communications
will not be established. To operate outside of the SATCOM frequency bands see Paragraph
2.3.3.2.
To operate the system in the normal (power on) mode:
1. Select the desired transmit power setting
2. Set the desired receive gain setting
3. Turn the ON/OFF switch to ON
4. Note that the 28 VDC light is illuminated
5. Begin UHF SATCOM communications
6. Note that the TX light is illuminated whenever the radio is keyed
7. Note that the VSWR and TEMP lights are not illuminated
Paragraph 3.1 contains appropriate Amplifier receive pre-amp gain setting guidelines.
2.3.3.2 Bypass Operation
When powered off, the amplifier systems provide a low loss RF path through both the
Bias Tee and Amplifier. Communications are possible across the 30-512 MHz band in this
mode of operation. This way a single equipment configuration can be changed from a highly
cosite immune UHF SATCOM system to multi-band system simply by powering the Bias Tee
OFF. However, there is no filtering when in bypass mode, so interference with co-located
SATCOM radios may occur. To operate the system in the bypass (power off) mode:
1. Turn the ON/OFF switch to OFF
2. Note that the DC ON light is not illuminated
3. Begin multi-band communications
Note: Operation in the bypass mode may interfere with other co-located UHF SATCOM
radios, since none of the AM-SAT-50s filtering is used when powered off.