On 1/16/2016 6:29 PM, Erik Basilier wrote:
In the absence of authoritative facts to the contrary, I can merely
speculate about most of the compatibility questions. It seems clear
to me that the roofing filters have not changed at all, and work the
same inboth radios.
Eric and Wayne have both stated unequivocally that other than one new
bypass capacitor on the +5V regulator (to reduce noise that impacts
frequencies below 500 KHz), the current KRX3 is no different than the
one in the "original" K3. Your KRX3/accessories will work in any
version of the K3/K3S.
The only issue would be the need to match versions of the KSYN3. If the
KRX3 is going into a K3S one would need a KSYN3A. If the KRX3 is
going into a K3 with upgraded (KSYN3A) synthesizer the KRX3 will need
the upgraded (KSYN3) synthesizer. If the KRX3 is going into an older
K3 with original (KSYN3) synthesizer the KRX3 will need a KSYN3 and not
the KSYN3A.
Bottom line ... if the target transceiver has a KSYN3A installed,
anyone purchasing your KRX3 will need to purchase a KSYN3A from
Elecraft in order to make use of it.
73,
... Joe, W4TV
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