[Elecraft] KPA3 vs KPA3A

[David Shoaf]

This has been discussed in the K3S FAQ.  See the link to it on the main
Elecraft.com web page.  Here's the detailed answer from it.

Q: Can I move the KPA3 100-watt PA module from my K3 to a K3S, or do I need
the new
KPA3A module?

A: A KPA3 can be used in a K3S. However, we recommend using the KPA3A PA
module,
because the K3S RF board was optimized for use with the KPA3A's MOSFET power
transistors. In a K3S, a KPA3A will typically provide 1 to 3 dB better
transmit IMD
performance, on average, than a KPA3. 

Hope that helps.

Cheers,

David/KG6IRW
Elecraft Customer Support



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