[TenTec] Jupiter Firmware Upgrade 1.25 Problem

[Jason Buchanan <jsb@digistar.com>]

J. D. wrote:

> The Noise Reduction circuit with the latest update (1.25) seems to be hosed
> up. When I press the NR button on the radio, it mutes the receiver. If I
> have the N4PY control software on, moving the slider control just the
> slightest turns the NR off on the radio. Anyone else having problems with
> this after their update of 1.25? 

I am able to replicate this behavior but i'm also able to eliminate it.


Powercycle the unit after loading 1.25, then load a different memory 
channel on a different band OR hit the BAND button to switch to a 
different band; the NR function is restored.  The frequency/band that 
the unit comes back online with after the upgrade doesn't work properly 
with the NR feature.  Not even a power cycle does this but changing 
bands does.


How I figured this out:

My Jupiter was shipped from the factory with version 1.24.

I uploaded 1.25 the day it was released and have used it every day since 
then.

I reverted to 1.24 to see if I could hear any differences with the NR 
feature.

I didn't hear any differences so I re-loaded 1.25.  At this point the NR 
feature stopped working and muted the audio as you describe above.

I reloaded 1.24, powercycled the unit, then reloaded 1.25 and NR started 
working properly again but I had not powercycled the unit at this point. 
 I then powercycled the unit again and NR stopped working again.  I 
turned the unit back on, recalled a different frequency/band via M > V 
and NR started working again.

So it seems that going from 1.24 to 1.25 to 1.24 back to 1.25 causes 
1.25 to act a bit weird but is fixed by switching to a different band 
and then powercycling the unit.


I think there may be an issue when jumping around with different code 
versions without power cycling the unit.  Lazy registers in the DSP 
firmware perhaps...

Whatever the cause, the radio works fine now...

I wouldn't mind working working on this a bit more but i'd rather not 
flash the firmware a bunch of times on my own radio.  Maybe if someone 
has a spare Jupiter or Pegasus they'll loan to me I can do some more 
regression tests!  I'd REALLY like to try an Orion for a while!


hope this helps,
Jason W0JSB


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