[aprssig] Kenwood "TC" command

Lee Bengston lee.bengston at gmail.com
Sat Jun 18 16:20:50 EDT 2011

On Wed, Jun 15, 2011 at 6:16 PM, Stephen H. Smith <wa8lmf2 at aol.com> wrote:
> The D700 and TH-D7 are notorious for a too-small buffer that overflows in
> KISS mode, since the entire raw packet including headers, etc lands in the
> buffer before being passed to the external terminal, (rather than just the
> packet payload as it does in the standard command-line mode).    The problem
> is aggravated by high traffic rates on the RF channel, especially if a lot
> of longish packets such as raw NMEA posits or weather station data are
> present.
> [ The direct predecessors of the D700 and TH-D7 were originally designed for
> the Japanese "NaviTra" ("NAvigation TRAnsceiver") system.  When these
> designs flopped in the domestic Japanese ham marketplace, the hardware was
>  re-purposed for APRS, with new firmware.     The APRS implementation is a
> firmware kludge crammed into a microcontroller with too little RAM and too
> little ROM to do it properly. ]

Wouldn't that tend to affect either packet mode or KISS mode when
using APRS software, or does KISS mode need more RAM and ROM?

Lee - K5DAT

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