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[aprssig] OPENING TNC problem on Kenwood TM-D700

Ralph Milnes ralphmilnes at gmail.com
Mon Aug 30 16:10:43 UTC 2010

My TM-D700 hangs with the OPENING TNC message about every other time I turn
it on (TNC is in APRS mode). I usually clear it with an quick power OFF then
ON. It is annoying. Is the VFO reset a permanent solution?

Ralph NM5RM

-----Original Message-----
From: aprssig-bounces at tapr.org [mailto:aprssig-bounces at tapr.org] On Behalf
Of Stephen H. Smith
Sent: Monday, August 30, 2010 1:40 AM
To: TAPR APRS Mailing List
Subject: Re: [aprssig] APRS Desert? & Sick sounding Digis, etc...

  On 8/29/2010 10:01 PM, Steve Noskowicz wrote:
> --
>   73, Steve, K9DCI   USN (Vet) MOT (Ret) Ham (Yet)
> P.S. To clear my OPENING TNC problem, I used a wireless (XBee)
USB-to-Serial setup *similar* to the thing John, W2FS is selling in QST; his
Virtual Serial Cable (VSC).  I conveniently and coincidently got a
consulting job that was using the modules and got my contact to buy me the
Development kit with modules that do the same thing that John's do...sorry
> John:   http://www.coastalchip.com/VSC-X/index.htm
> Digi (Xbee Development kit):

What does all this have to do with recovering from the "OPENING TNC" lockup?

I've had this same lockup numerous times, especially when something crashes
my laptop while controlling the Kenwood in "TNC" mode.  (Accidentally 
unplugging a USB<-->serial dongle while a program is talking to the D700 is 
guaranteed to lock it up!)  Even with the TNC hung, you can normally get to
radio configuration menus.

All you have to do is wade through the D700 setup menus under 
RADIO->AUX->RESET->"VFO Reset", and OK it.    By choosing "VFO" reset rather

than "Memory" or "Full", you don't loose anything. The radio re-initializes
VFO A on 144.00, VFO B on 440.00, memories untouched, and TNC off.    Then
recall a PM previously stored with your customary settings, and you're back

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