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[aprssig] Re: D700 not got for 'connected packet'

John K9IJ k9ij at vx5.com
Thu Nov 10 22:37:12 UTC 2005


At 12:18 PM 11/10/2005, you wrote:
>Bob-
><<It has MAXFRAME = 1 which
>means that each packet has to be acknowledged
>one ack per line at a time in a connected mode.
>Normal packet MAXFRAME can be as high as 7 >>
>
>In the fine print of the D7 brochure Kenwood say:
>"Built-in 1200/9600bps TNC (1 packet, 1 frame, 256 bytes)
>compliant with AX.25 protocol* " and the asterisk only seems to relate to mode
>selection not requiring a PC.
>
>
>I may be the only one who bought a Kenwood with no understanding that this
>1-1-256 limit was different from what "real" TNCs do but I suspect a 
>lot of the
>Tasco modem arguments center around this little fact.
>
>Does teh AX.25 protocol say anything about these limits? Or, is it just that
>everything [sic] but APRS presumes rhe hardware will be more capable?

Current D-700s default to a MAXFRAME of 4. We set ours up to MAXFRAME=7
and have no problems with long messages like shelter reports.

John - K9IJ
Lake County (IL) RACES


-

John Rice  K9IJ
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