[ICOM] IC-735 Interface

[Gary P. Fiber]

Seems to me I once saw an article where an enterprising ham used the 
band switching voltages to switch an antenna relay. For the life of me I 
can't remember where.
The voltages are published, even the parts on the schematic of like the 
AT-100, AT-150, AT-500, 2KL all depended on the transceiver sent band 
switching voltage to change bands.
I don't remember about the IC-4KL though. I don't think it would be to 
hard to duplicate the circuit providing the chips are still available 
Icom used.
I don't remember them being special either.

You might do a Google search on Band Voltage switched antenna switching 
or a variation of that.
Wow here is one already  
http://techdoc.kvindesland.no/radio/feed_lines/20060919163830596.pdf
Another using the band voltage  http://www.om5gt.szm.com/switch/switch.pdf
PICAXE one that uses the CI-V I think  
http://www.vk4adc.com/content/index.php?option=com_content&task=view&id=45&Itemid=1

Google search phrase below there seem to be many that pop up
Icom automatic antenna switching

Gary K8IZ

On 2/9/2011 3:32 PM, Taylor Jim-CJT001 wrote:
> Greetings to the Icom List. I have a Q that I'm sure has been addressed
> here previously, but I am a newcomer to the list. I'm looking for an
> interface for my IC-735 that will drive external relays etc that will
> follow the band switch. I have looked at the CT-17 but it doesn't do
> what I want ? Array Solutions has the BandMaster II interface but Big
> $$, as does another one at 2x the cost of the Array Solutions box. I'm
> sure someone has confronted this problem before and found a low cost
> solution. Any suggestions ?
>
> Regards,
>
> Jim Taylor
> WB8HMD
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-- 
Gary P. Fiber K8IZ

General Radio Telephone Operators License PG-19-6691,
with Shipboard Radar Endorsement.
Washington State Resident.

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