[aprssig] D710 standalone control head!

Stephen H. Smith wa8lmf2 at aol.com
Mon Oct 1 20:19:48 CDT 2007

kb2scs at optonline.net wrote:
> Hi Stephen
>                     See below.
> On 1 Oct 2007 at 17:46, Stephen H. Smith wrote:
> Snip
>> One question I have is:
>> Does the head have some kind of RS-232 serial port connection on it so 
>> that you could connect it to an external computer with APRS program as 
>> you do in the D700/710 "packet " mode.
> No
> It would be nice if it did. As long as the main radio body had one 
> also.
> Which of course the main body does but again the Head does not.
> Let us hope we never witness the "Silence Of The Hams"
> 73 DE John  KB2SCS
>        E-Mail:            kb2scs at arrl.net
>        APRS-SCS     http://www.tapr.org/~kb2scs
>        Web Page:     http://www.qsl.net/kb2scs

I'm really puzzled now.   If the TNC is in the control head, and the 710 
supports the same kind of "packet mode" operation as the 700 with an 
external computer/terminal,    then there must be some way TNC data is 
getting to the main chassis where the serial port connector is located.    

Is it interleaved in the data stream carrying radio control functions 
(volume, squelch, channel,etc.) from the head to the main chassis?

Or perhaps separate TTL-level signals in other conductors of the 
head-to-radio cable with conversion to true RS-232 levels inside the 
main chassis?


Stephen H. Smith    wa8lmf (at) aol.com
EchoLink Node:      14400    [Think bottom of the 2M band]
Home Page:          http://wa8lmf.com  --OR--   http://wa8lmf.net

JavAPRS Filter Port 14580 Guide

"APRS 101"  Explanation of APRS Path Selection & Digipeating

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