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[aprssig] KPC-3+ with a Delta?

Ron Tonneson ron.tonneson at gmail.com
Tue Jun 3 17:52:37 UTC 2008


I run an KPC-3+ xmitlvl of 303 with my GE Phoenix SX.

Ron - K0QVF

Mark Cheavens wrote:
> Earl,
> I have built MANY Digi's out of Delta S and SX's (No plain Delta's).
> 
> On the S and SX you need to watch out for the following:
> 1. How are you getting your RX audio? If you are using Vol/SQ high 
> you MUST install a de-emphasis (R-C) if you want good decode performance.
> 2. Make sure when you set the transmit deviation that you do not get 
> into the limiter/clipper.
>          - There is no "mic gain" in the radio's, but there is a 
> deviation level and a deviation limiter.
>          - I HAVE seen some radio's (designed for 12kc channels) that 
> you could NOT get over 2.5khz clean audio without installing a bypass 
> resistor ( I can't remember the resistor number and I am out of town 
> right now and can't look it up).
> 
> Be sure a use a service monitor when setting the xmit level and make 
> sure when you set the high tone at 3.5khz that the audio is still a 
> clean sign wave with no clipping.
> 
> Mark
> KC5EVE
> 
> At 09:46 PM 6/2/2008, you wrote:
> 
>>          How high did you set it?  I've already gone from the
>> standard 100 to 170, and it needs more.  I wish there was some way of
>> using it with the original settings, incase the TNC fritzes
>> out.  Yes, that's a technical term...
>>
>>          Tnx es 7 3
>>          Earl
>>
>> At 08:39 PM 6/2/2008, John B. Leonard, Jr. wrote:
>>> I had a similar problem with a Motorola mobile.  The KPC3+ has a tranmit
>>> level setting (I think it's "xmitlvl") that is used to change the deviation.
>>> Once it was set from the default to a level much higher, it worked fine.
>>> Bottom line:  there was no need to fiddle with the radio at all.
>>>
>>> 73
>>> w9jbl
>>>
>>> ----- Original Message -----
>>> From: "Earl Needham" <needhame1 at plateautel.net>
>>> To: <aprssig at lists.tapr.org>
>>> Sent: Monday, June 02, 2008 9:01 PM
>>> Subject: [aprssig] KPC-3+ with a Delta?
>>>
>>>
>>>>         Anybody else using a KPC-3+ with a GE Delta?  If so, I'd
>>>> like to hear what your settings are for XMITLVL and whether you have
>>>> found a "mic gain" control somewhere on the Delta.  I can't seem to
>>>> get enough audio to the Delta to match the other stations here.
>>>>
>>>>         Thanks,
>>>>         Earl
>>>>
>>>> KD5XB -- Earl Needham
>>>> Clovis, New Mexico DM84jk
>>>> http://groups.yahoo.com/group/cw_bugs
>>>> Quoting from the Coast Guard: ZUT
>>
>>
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> 
> 
> 
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