[OZAPRS] alternative to KA9Q NOS ?

vk2tv vk2tv at exemail.com.au
Wed Nov 7 15:09:09 AEDT 2018

I think the extended AX25 that Linux supports addresses those issues. It 
can certainly handle Maxframe 127 instead of just 7.

I played with it over a wire link between a YAM 9k6 modem and the Baycom 
USCC>4 card 9k6 modem some years back. I remember being impressed by the 
performance compared with 1k2 packet.

Ray vk2tv

On 7/11/18 2:43 pm, Carlos wrote:
> Hi Tom,
> I was reading a bit this morning and I understand that transporting
> TCP/IP traffic over AX.25 might not be a wise idea due to the small
> frame count.
> I don't understand these things well, but with a radio capable of 64
> kbps (or more) constrained by a protocol with a short frame length and
> count (the number of unconfirmed packets that can exist at a give
> time), the transmissions will be constantly halted waiting for
> acknowledgements ???
> Have you guys explored the use of SLIP/PP over radio ?
> 73,
> Carlos VK1EA
> On 11/7/18, Thomas Karpiniec <tk at 1.21jiggawatts.net> wrote:
>> On Tue, 6 Nov 2018, at 11:41 PM, Cary Dreelan wrote:
>>> You’ll find that your Linux distribution has compiled some defaults that
>>> may not be suitable to this application, but they are *not* hard coded.
>>> if you run ‘sysctl -a’ you’ll find more parameters that can be tweaked
>>> in realtime than you’ll want to ever know about.
>> Oh definitely - I probably gave the wrong impression. There's lots of sysctl
>> stuff that vastly improves matters, particularly concerning ARP, and it's
>> usable. However there was at least one fundamental constant where optimising
>> it for packet required a kernel rebuild. I've forgotten what precisely it
>> was but I could do a deeper search later if anyone particularly wanted to
>> know.
>> Cheers & 73
>> Tom VK7NTK
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