[FADCA] 9.6KB Throughput vs 1.2KB

[bud thompson]

The radio baud rate of 9.6kb is 8X as fast as 1.2kb...

We all know the throughput rate is not 8X as fast.

What I don't know is this:

What is a reasonable comparative throughput rate of 9.6KB compared to 1.2kb?

Premise:  While we may not make a 'perfect' 12kb test, we are used to 1.2kb 
and will accept almost anything that works.  So, if we observe a 1.2kb 10k 
file transfer with few, if any, retries, we will consider that our 
baseline...

Now we move to 9.6kb... where we have much less experience...

All I'm concerned about is encoding/decoding in the absence of noise.  Let's 
assume the RF path/link has virtually no influence.. this is a bench test.

If the 10k file can be received in 3 minutes using 1.2kb...

What can we expect to do using 9.6kb?

Half the time (1.5 minutes?)

Give me a range - I'm not interested in technical details regarding AX.25 
parameters, etc... just your experience on what we can expect.

I see no reason to go to 9.6kb if it takes 80% of the time that 1.2KB 
takes.. hardly worth it.

Where is the break over?  - 50%...40%

What have you achieved?

Thanks in advance.

bud N0IA
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