Apache Labs ANAN-100/D
Antenna use and switching in ANAN-100/D
There are many Antenna switching options for the Apache Labs ANAN-100/D. Below you see a screen picture of
the Setup,General Ant/Filters, Antenna tab.
The 1, 2, 3 selections correspond to the rear panel ANT1, ANT2, and ANT3 BNC connectors. You can select
different antennas for receive and transmit on each band. As you change bands, the selected antenna ports will
automatically change according to the settings on this form.
You can also optionally select EXT1, EXT2, or XVTR to receive on the selected port while transmitting on
ANT(N). These correspond to the EXT1, EXT2 and XVTR BNC connectors on the ANAN-100/D back panel.
When you select EXT1, EXT2, or XVTR, the receive path from ANT(n) switches from the HPF and receiver to the
rear panel ByPass connector.
If you select EXT1, EXT2, or XVTR you can modify the received signal path by:
1. Connecting an external filter or pre-amp between the ByPass connector and the selected EXT1, EXT2
or XVTR connector. The signal would then pass thru the HPF to the receiver.
2. Attaching an external receive antenna to the EXT1, EXT2, or XVTR connector. The selected antenna would
then be routed thru the HPF to the receiver. If EXT1, EXT2, or XVTR is selected, ANT 1-3 would no longer be
used for receiving.
WARNING: During transmit, the selected EXT1, EXT2, or XVTR antenna could experience high levels
of RF which could result in damage to the receiver. An external T/R switch should be configured to
protect the receiver input while transmitting.
Revision v1.8 April 23, 2013 27 of 70 authors N9VV and KC9XG
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