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FT-920 Operating Manual
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5. Antenna Connections
The FT-920’s three antenna connectors, plus inno-
vative microprocessor-based memory and switching
circuits, provide excellent flexibility in setting up your
antenna connections.
Typical antenna configurations are shown below. Re-
member that Antenna A and Antenna B (which are
“SO-239” or “M” connectors) may be used for trans-
mission and reception, while the RX Antenna port
(which is an “RCA” type connector) may only be used
for reception.
Note
Regarding Large Receive Antennas
Although surge suppression is provided on all
antenna ports, you may wish to consider build-
ing a simple external circuit which will discon-
nect, on TX, any antenna connected to the RX
A
NT
I
N
jack, particularly if you are using a very
long wire antenna such as a Beverage. Very
long antennas can build up very high RF and
static voltages on them, and the circuit below
may provide better protection for your
receiver’s input circuitry.
6. Personal Computer Interfacing
for Contest Software, etc.
The FT-920 features a built-in level converter, allow-
ing direct connection from the rear-panel CAT jack to
the serial port of your computer, without the need for
any external converter box.
When your software requests serial port configura-
tion information, set it for “4800,N,8,2” (4800 baud,
No Parity, 8 Data Bits, and 2 Stop Bits). Be certain to
configure and activate any required “TSR” (Terminate-
and-Stay-Resident) utilities before beginning com-
puter-controlled transceiver operation (your software’s
instruction manual will describe any such require-
ment).
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