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 FZ 52-S |
| XK 405 |
 SEM-90 |
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XK 405
The connectors for handset, loudspeaker and transceiver also are on the front.
The modes can be speech, CW, (and with external modem also AFSK). The operational unit can be used up to a distance of 90 m. A test device is built in. The transmitter part is verified continuously, and the result is displayd continuously. A test without transmitting also is possible. While receiving, the test is audible by a pulse-sequence; no RF is transmitted. If switched to SEND/EMPF the complete signal way is tested with RF- transmission, and the result is shown by showing the numbers 1 to 9 on the display of the operational unit. The REMUS- connector *** is on the underside of the transceiver. Two quick release screws hold the transceiver to the shock absorbing mounting.
The task of an ATU is to transform the real resistance of the radio to the radiation resistance. While transmitting, the values are preselected and stored; these values also stay the same while receiving. Below a frequency of 1.5 MHz the ATU is bridged over.
(Computer supported consistent measuring and checking system). REMUS formerly consisted of 75 mobile testing systems, for abt. 1 million Euro per system. The system could test 130 different modules of 20 weapon systems, and find out faults by comparing the sub- modules. The complete periphery of the module was simulated by REMUS. The system REMUS was suspended in 2002. Today only 7 systems are left; they still test radios of the SEM 70/80/90 family.
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