Kantronics KPC-9612 Plus, Руководство пользователя

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to your hand-held. Ground return and speaker audio are both supplied through
the external speaker jack of your hand-held.
While you will need to check the exact requirements of your hand-held radio, the
following guidelines may be useful:
•
A .1 uF capacitor (non-polarized) usually is required in the transmit
audio line from the TNC to any handheld transceiver (HT) radio. Even if
a capacitor is not required for connection to a particular radio, it can still
be installed, and the transmit audio (packets) will pass through to the
radio.
•
ICOM HT radios key the PTT by providing a low impedance path from
the mic input to ground. To accomplish this, simply install a resistor
(approximately 3.9K seems to be a good value) in series with the PTT
wire from the KPC-9612 Plus, and connect this to the mic input along
with the AFSK line.
+ The ICOM 2A style wiring is most common, and can be used with some
Alinco, Azden, and Standard HTs.
•
YAESU radios are similar but use a mono plug and a different value
resistor.
+ The wiring for Yaesu HTs can also be used with Radio Shack HTs.
•
Most KENWOOD HT radios key the PTT line by connecting the sleeve
of the mic connector to the sleeve of the earpiece connector. This means
that you will not need a resistor in the PTT wire from the KPC-9612
Plus, simply connect the PTT wire to the sleeve of the mic connector.
Another point to watch – most of the KENWOOD HTs (2600 and later)
use a three pin mic connector. The AFSK from the KPC-9612 Plus
should therefore connect to the RING and not the TIP of the mic
connector.
+ Leave J7 in normal (not HT) when using Kenwood HTs.
Optional Connections to DB-9 Radio Port
As noted above, Pin 7 can be used either for external (soft) reset or for power in-
put and Pin 9 can be used either for external (soft) reset or for ground. However,
Connecting to your Radios Appendix A: Advanced Installation
KPC-9612 Plus v 8.2 293 User’s Guide