[Elecraft] K2 Looking for a KPA 100 amplifier

[Dave Van Wallaghen]

Mike,

The KAT2 is the QRP version of an ATU used with the base K2. It can handle 
up to 20 watts. If you need an ATU to work with your KPA100,  then you 
would need the higher KAT100 that will handle 150 watts.

The KAT2 and KIO2 mount in the top cover of the base K2. The KPA100 
replaces that whole cover. So neither board could be used with the KPA100 
installed (as well as the KBT2 battery option).

Many ops who upgrade their K2'S with the KPA100, simply keep the top cove 
around with those options installed and in the event they want to operate 
QRP, they simply swap the top cover with the KPA100. This is the wonderful 
nature of the modular design of the
K2.

Again, I hope this helps and is not clear as mud.

73,
Dave, W8FGU

On April 27, 2020 14:44:02 Mike Kopacki <mikekopacki at gmail.com> wrote:
> Thanks, Dave.
>
> You’re saying that the KAT2 that I have now has to be replaced?  I wonder 
> if that’s included in the KPA 100 kit?
>
> 73,
> Mike NJ2OM
>
> Sent from Mail for Windows 10
>
> From: Dave Van Wallaghen
> Sent: Monday, April 27, 2020 2:24 PM
> To: NJMike; elecraft at mailman.qth.net
> Subject: Re: [Elecraft] K2 Looking for a KPA 100 amplifier
>
> Mike,
>
> The amp will fit just fine with your current configuration. Although, the 
> KAT2 and KIO2 boards will stay with the original top cover. The KPA100 
> includes the KIO2 circuitry. If you need an ATU for use with the KPA100, 
> then you will want a KAT100 ATU or other brand that can handle 100+ watts.
>
> Hope this answers your question.
>
> 73,
> Dave, W8FGU
>
> On April 27, 2020 14:18:04 NJMike <mikekopacki at gmail.com> wrote:
>
> I built K2 #4619 some years ago. Now I am considering adding the KPA 100
> amplifier.  When I bought and built the K2, I also built and installed the
> following option3:
>
> KAT2 automatic antenna tuner
> KSB2 SSB adapter
> KDSP2 DSP filter and internal clock
> KIO2 AUX I/O module
> KNB2 noise blanker
> K160RX 160 meter module
> MH2 microphone
>
> On the technical side, I need to know if the amp can be installed after
> installing all these options.
>
> On the purchasing side, I guess my options are purchasing from Elecraft for
> $650 (which I am sure is worth the price), or buying one from someone who
> bought one but never built it.  I am retired now so I'm trying to spend as
> little as I can.
>
> Please let me know if you have one that you'll sell, and if you know the
> answer to the first question.
>
> Thanks!
> Mike NJ2OM
>
>
>
>
> --
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