Detailed Circuit Description; Receiver Path, Detailed Circuit Description; Antenna Switch - Motorola MTH500 Service Manual

Theory of Operation

Detailed Circuit Description

Receiver Path, Detailed Circuit Description

2 - 10
See Figure 6.
LC
Front Filter
IL=2.5dB
Baseband
Filters
Baseband
Amplifiers
Figure 6 Receiver Path Circuit Diagram

Antenna Switch

The signal coming from the antenna is routed to the receiver section via the har-
monic filter, which is comprised of L890 and C1012. The signal continues to flow
through image filter (equivalent quarter wave) transformer C1015 and L817 to the
Rx section toward limiter diode D500. The antenna switch attenuates the image
(DSP)
GCAP
68P02963C70-O