[aprssig] kpc-2 audio input level help

Nick G4IRX g4irx9 at nowindows.net
Tue Jul 26 04:54:35 EDT 2016

The manuals for the KPC-2 came as a set of 3 manuals that covered KPC-1, 
KPC-2, KPC-4 KAM and KPC-2400. Installation manual, Operations manual 
and Commands manual. They are available on mods.dk or several other 
sites if you search.

It uses the AM7910 mode chip so you need to select HF off, HFTONES off, 
HBAUD 1200 to ensure You've got Bell 202 1200 baud selected. A hardware 
reset should get you to this state.


On 26/07/2016 08:28, MJ Inabnit via aprssig wrote:
> I really don't know.  This tnc arrived in a box of junk, no manual 
> etc, so I don't have any info.  I've googled, but haven't found 
> anything yet.   I know the kpc3 had jumpers or pots or something. But 
> I have what I have at this point.
> tu om!  73
> j
> On 07/25/2016 10:15 PM, Eric Lorenz K9LGE wrote:
>> I don't know if it's the same in the -2, but in the -3 wasn't there a
>> jumper or something that you could insert/remove to change the output
>> level? Wondering if that might be in the -2 also...
>> Eric
>> On Jul 25, 2016 14:07, "MJ Inabnit via aprssig" <aprssig at tapr.org
>> <mailto:aprssig at tapr.org>> wrote:
>>     Hi Gang:
>>     Have two tnc's here, one is pk12 running wonderfully.  My problem is
>>     my KPC-2.  It works only on some signals.  I have it wired for my
>>     ft-8900 to its acc port so I can still use the other band for day to
>>     day vhf/uhf ops when not using the tnc.
>>     Is there ANY way to tweak the audio line level from the 8900 just a
>>     bit so it can copy slightly less deviated signals?   I have only the
>>     downloaded op manual which sort of covers the KPC1 all the way
>>     through the Kam and KPC-4, but doesn't show anything at all about
>>     adjusting input/output levels.
>>     I'm hoping maybe a pot or a resister value might be changed or
>>     something.
>>     As for the 8900, there doesn't seem to be any level adjustments for
>>     the acc port audio.
>>     thank you,
>>     73
>>     j
>>     --
>>     wishing you well
>>     Jaye, ke6sls--via the toshiba w/thunderchicken3
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