TO 31R2-2TRC207-1
1-4
Figure 1-1
Figure 1-2. Receiver-Transmitter RT-1695/TRC-199
1-1.2.4
Diplexer.
(See Figure 1-3.) The BDR diplexer provides a method of using a receiver and a transmitter on a common antenna. The
diplexer has three coaxial connector ports - one port connects to the antenna via the power supply and the other two
connect to the Radio A and Radio B ports on the BDR. The diplexer, when properly tuned, provides a transmitter-to-
receiver isolation of 70 decibels (dB) at any frequency spacing of 4 MHz or 3% of the operating frequency, whichever
is greater. There are three separate diplexers, one for each frequency band. The frequency band of the diplexer must
correspond to that of the receiver-transmitter and antenna.
Legend for Figure 1-3
(136-174 MHz and 403-470 MHz diplexers have the same controls, but their appearance is slightly different):
1. Tuning Meter
3. RCV Frequency Meter and Tuning Knob
5. TUNE Pushbutton
2. SENS Control
4. XMT Frequency Meter and Tuning Knob
Figure 1-3. BDR Diplexer
Содержание AN/TRC-207
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Страница 53: ...TO 31R2 2TRC207 1 5 5 Figure 5 2 Repeater Control Audio CCA A1A2 Functional Block Diagram ...
Страница 54: ...TO 31R2 2TRC207 1 5 6 Figure 5 3 15 Watt Power Amplifier Assembly A1A6 Functional Block Diagram ...
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Страница 74: ...TO 31R2 2TRC207 1 7 6 HOW TO USE THE ILLUSTRATED PARTS BREAKDOWN ...
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