[aprssig] recommendations for 9600 TNC

Bill V WA7NWP wa7nwp at gmail.com
Fri May 6 13:07:32 EDT 2011

Double ditto what Tom said.   The D7?0 is the way to go for a 9k6
packet station.

On the other hand, I'd suggest you carefully evaluate why you need
9k6.   For a 'backbone' feeding multiple stations it would be great.
For a "user" APRS channel it's not needed, actually two fast for the
display for those with mobiles, adds cost and complexity and locks out
everybody that doesn't have the 9k6 setup.   If you want to take some
of the traffic off of 144.39 - go for UHF (or other band) with 1200
baud which should have a much wider audience than 9k6.

Bill - WA7NWP

On Fri, May 6, 2011 at 7:59 AM, Tom Hayward <esarfl at gmail.com> wrote:
> On Fri, May 6, 2011 at 08:07, ml41782 <ml41782 at yahoo.com> wrote:
>> I'm looking at my options for expanding APRS using 9600 baud in my area. I
>> have been testing with 9600 on UHF for some time now with fair to good
>> success. I actually prefer UHF. I'm getting ready to test this now on the
>> VHF side. I have the VHF radios  what I'm looking for is a cheaper way to do
>> the TNC other than a KPC 9612.
> In the Pacific Northwest we've been using Kenwood TM-D710s with their
> internal TNC, some with the built-in digipeater and some with aprx. We
> take advantage of both receivers, putting an external 1200 baud TNC on
> the second receiver. This gives a lot of bang for the buck. Two
> digipeaters for ~$600 in radios and TNCs.
> See:
> http://aprs.fi/?call=baldi
> http://aprs.fi/?call=vbaldi
> http://aprs.fi/?call=pack
> http://aprs.fi/?call=somtn
> http://aprs.fi/?call=vsomtn
> http://aprs.fi/?call=xtal
> http://aprs.fi/?call=crystl
> I'm also looking forward to something from Argent or Byonics that is
> capable of 9600 baud.
> Tom KD7LXL

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