David and Dianne on Comcast <[email protected]> wrote:

> I have several questions for you as I consider the K3S upgrade decision in 
> the near term.
> 
> My early K3 (Feb 2008) has an early sub-receiver installed.  I may be 
> interested in purchasing a K3S but would like to use my current sub-receiver 
> in the new K3S to keep the cost down. I believe you indicated earlier that it 
> is compatible and is possible to do. So....
> 
> 1. Will my original sub-receiver's DSP board also work in the K3S?

Yes.


> Will a new sub-receiver DSP board work with an original sub-receiver in the 
> K3S?

Yes.


> Any other considerations or suggestions?

No. The DSP board we're changing is the one for the main receiver/transmitter. 
That's the one that has the new AF circuitry on it. 


> 2. Can you summarize the changes from the early KPA3's to the more recent 
> KP3A?

The KPA3A uses different output devices that are more readily available. 
Otherwise specs are the same.  


> 3. Has the K3 mixer board and its circuit on the K3 RF board undergone any 
> changes from the early K3's to the K3S?

The K3 RF board has had a few minor updates, all covered by existing mod kits. 
The K3S adds an attenuator section (to provide 5/10/15 dB settings) and a 
completely revised layout using 4 layers to reduce noise pickup and improve 
port-to-port isolation.

73,
Wayne
N6KR



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