FLEX-6000 Signature Series - SmartSDR for Windows Software User’s Guide
Page 142
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34.3 FDX CAPABILITIES BY RADIO MODEL
The capabilities and rules for FDX operation vary by model as defined by its respective hardware
capabilities. Specifics for each model are as follows.
34.3.1 FLEX-6600M / FLEX-6700 SO2R Operation
The FLEX-6600/M and FLEX-6700 incorporate two independent, full performance Spectral Capture
Units (SCUs), each with their own band pass filter pre-selectors. This means that these radios can
simultaneously receive on two separate antennas. With FDX engaged, it is possible to listen on one
antenna/band while transmitting on another - given sufficient antenna isolation is provided.
Alternately, RX A, RX B, or XVTR may be used as receive-only ports. The internal pre-selectors on the
FLEX-6600/m and FLEX-6700 provide a minimum of 20 dB band to band rejection. With antenna
isolation of at least 40 dB, cross band SO2R operation without external filtering is practical. For high
power operation and sites with less antenna isolation, external transmit band pass filters must be
added to increase isolation.
Please refer to the SO2R Mode with N1MM for the FLEX-6700 How to Guide for step-by-step setup
instructions for operating a FLEX-6600/M or FLEX-6700 with N1MM in SO2R mode.
A default Global profile, SO2RDefault, is provides a starting point for configuring the radio for SO2R
operation.
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