[Icom] AT-150 with other manufacturers rigs

Sat, 14 Dec 2002 00:23:07 -0800

Hi Adam

I have constructed the AT-150 bandswitch control using
a CK1024 12 position single pole non-shorting rotary switch.

The other parts required were a 7 Pin DIN plug,
eight 1K 1/4 watt resistors and one 5.1K 1/4 watt resistor.
(I used three 15K's in parallel instead of a single 5.1K).

The CK1024 switch has a mechanical stop that can be set to limit
the switch to 7 positions.  The contacts for the unused switch
positions are used as standoffs when building the resistor network.

The bandswitch control works perfectly, allowing the AT-150 to
service non-Icom transceivers.  I still need to add a
reverse-polarity-protection
diode in the 12V supply line and a suitable enclosure.

Once my Jupiter arrives, I'll start digging into the howto's of
auto bandswitching.  Meanwhile, I can get on the air with
the manual bandswitch.

Thanks for your assistance.

(If anyone wants to see photos/diagrams of this manual bandswitch
for the AT-150, let me know and I will upload them to my webspace
and post the URL.

Gary
VE7GGJ

Adam Farson wrote:

> Hi Gary,
>
> That is an excellent interim solution. Here is a table of bandswitching
> voltage range vs. band:
>
> Band MHz    Input Voltage
> 10               0.0 ~ 1.0V
> 28 or 24      2.0 ~ 3.0V
> 21 or 18      3.0 ~ 4.0V
> 14               4.0 ~ 5.0V
> 7                 5.0 ~ 6.0V
> 3.5              6.0 ~ 7.0V
> 1.8              7.0 ~ 8.0V
>
> You should be able to build a logic circuit to decode the band data (if any)
> from the Jupiter, and drive a DAC  which in turn generates the Icom
> band-selection voltage.
>
> Cheers for now, 73,
> Adam VA7OJ/AB4OJ
>
> -----Original Message-----
> From: [email protected] [mailto:[email protected]]On
> Behalf Of Gary Jacek
> Sent: December 9,~ 2002 23:46
> To: [email protected]
> Subject: Re: [Icom] AT-150 with other manufacturers rigs
>
> Adam
>
> I don't have much information on the Jupiter yet.
>
> I did dig out my IC-745 and AT-150 manuals and take some measurements.
>
> My plan is to build a voltage divider network in order to produce the 7
> required
> signalling voltages and the 8V reference.  I will then run these through a 7
> position
> single pole rotary switch and 7-pin DIN connector so that I can put the
> AT-150 on the right band manually.   I believe the AT-500 already has this
> feature,
> but the AT-150 does not.
>
> That will be my first cut at this project.  Once I have more information
> on the Jupiter, I will try to devise something to do the bandswitching
> automagically.
>
> 73 de Gary
> VE7GGJ
>
> Adam Farson wrote:
>
> > Gary,
> >
> > You will need to come up with a scheme to translate whatever band-related
> > data comes out of the Jupiter into the 0 ~ 8V DC band-selection voltage
> > required by the AT-150.  Icom has grouped 17m with 15m, and 12m with 10m.
> >
> > Best 73,
> > Adam, VA7OJ/AB4OJ
> > North Vancouver, BC, Canada
> > http://www.qsl.net/ab4oj/
> > Icom FAQ site:
> > http://www.qsl.net/icom/
> >
> > -----Original Message-----
> > From: [email protected] [mailto:[email protected]]On
> > Behalf Of Gary Jacek
> > Sent: Sunday, December 08, 2002 10:40
> > To: [email protected]
> > Subject: [Icom] AT-150 with other manufacturers rigs
> >
> > I have an Icom AT-150 that I would like to use with a Ten Tec Jupiter HF
> > transceiver.
> > Is this possible?
> > What do I need to build in order to trigger tuning and antenna switching
> in
> > the AT-150?
> >
> > Gary
> > VE7GGJ
> > [email protected]
> >
> > ----
> > Your Moderator: Dick Flanagan W6OLD, [email protected]
> > Icom Users Net: Sundays, 1700Z, 14.315 MHz
> > Icom FAQ: http://www.qsl.net/icom/
>
> ----
> Your Moderator: Dick Flanagan W6OLD, [email protected]
> Icom Users Net: Sundays, 1700Z, 14.315 MHz
> Icom FAQ: http://www.qsl.net/icom/
>
> ----
> Your Moderator: Dick Flanagan W6OLD, [email protected]
> Icom Users Net: Sundays, 1700Z, 14.315 MHz
> Icom FAQ: http://www.qsl.net/icom/