[ICOM] AT-160 Tuner

[Gary P. Fiber]

Ed,

It can not be used easily. The AT-160 depends on the analog band switching
voltages present on the ACC jack on Icom transceivers. Without that voltage it
would not know what band you were on as it does some presetting before 
actually
tuning.

Now building a circuit that will simulate those voltages manually would not be
that difficult. You could use a rotary or even SPST switches and a voltage
divider to do the job. The voltages are not exact so some place with in the
parameters below for each band will do.

Band MHz         Voltage +DC
1.8                    7.0 ~ 8.0 V
3.5                    6.0 ~ 6.5 V
7                       5.0 ~ 5.5V
14                     4.0 ~ 4.5V
18 - 21               3.0 ~ 3.5 V
24 - 28               2.0 ~ 2.5 V
10                       0 ~ 1.2 V

Application of one of these voltages causes the tuner to change to that
particular frequency range.

Hope this helps.

Gary K8IZ

>
> Can the AT-160 antenna tuner be used as a stand alone tuner
> with other rigs beside the IC-728, etc rigs.  I have seen the
> mod for use  with some later 706 rigs. Hope to make it the tuner for my
100
> watt non- ICOM rigs.
> thanks,
> Ed Purvis
>
> Bradenton, Fl
>
>
> Ed Purvis WA4NJY
>         Amateur radio since
>          1963, tube-type most
>          of the time.
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Gary P. Fiber K8IZ
GROL PG-19-6691
Washington State Resident