3-11 Figure 3-10.—Typical radio receiversQ8. What are the transmitter operating modes? Q9. What type of tuning does the receiver use? ANTENNA DISTRIBUTION SYSTEMS Receiving antenna distribution systems operate at low power levels and are built to fit a standard 19-inch rack. Each piece of distribution equipment is fitted with termination or patch fittings designed for ease of connecting and disconnecting. A basic patch panel is shown in figure 3-11. Even a fundamental distribution system has several antenna transmission lines and several receivers. Normally a patch panel consists of two basic patch panels. One panel is used to terminate the antenna transmission lines and the other the lines leading to the receivers. Any antenna can be patched to any receiver through the use of patch cords. Figure 3-11.—Basic rf receive patch panel. Many distribution systems are more complex. A complex distribution system to cover most situations is illustrated in figure 3-12. In this system you can patch four antennas to four receivers, or you can patch one antenna to more than one receiver via the multicouplers (multicouplers are covered later in
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