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Thanks for the all the very helpful responses (especially the one from
Jonathan). The missing piece of information was the ability to program
the SEND signal per band. With that capability my problem is solved. I
am moving forward with the upgrade.

Thanks again.


>  I own an IC-821H and would like to replace it with something than can

> do 23cm. I have been looking at the 910H. One of the issues I had with

> the 821H was that it did not have separate ground-on-transmit signals 
> for each band (like the Yaesu 736R does). It appears from the ICOM 
> 910H manual (available here  
> http://www.icomamerica.com/SUPPORT/DOCUMENTS/manuals/ic-910H.pdf ) 
> that this shortcoming (in my opinion) has not been corrected. To make 
> things worse I don't even see a single ground-on-transmit signal 
> available (the ACC and DATA sockets list PTT and SEND as inputs). 
> While I can justify not using an external linear for 2m and 70cm, 23cm

> is a different story. I don't like to use RF sensed switching of 
> linear amplifiers - I like to use a ground-on-transmit signal from the

> radio. So, what am I missing? How does one accomplish this with the 
> 910H and an external 23cm linear AMP without RF sensing?

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