K3 Low Power PA

[Phil Hystad]

With nothing else to do late last night I was looking at the schematics for the K3, in particular the lower power amplifier.

I decided to look up the specs for the RF power transistors and noticed that one was for HF and the other was for VHF.  And, from these specs, it looks like the VHF mosfet can easily handle 2 meters.

Does this mean that the LPA is the 2-meter amplifier for the new 2-meter option for the K3 or does this VHF spec apply to 6 meters only?
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[N5GE]

On Thu, 7 Jan 2010 09:02:50 -0800, Phil Hystad <[hidden email]>
wrote:

Phil,

After looking at the installation instructions for the K144XV I
determined that the K144XV has its own RF Power transistor, ergo the
large heat sink that attaches to the left side panel of the K3.

You can download the K144XV Manual at
http://www.elecraft.com/manual/K144XV%20Manual%20A3.pdf

>With nothing else to do late last night I was looking at the schematics for the K3, in particular the lower power amplifier.
>
>I decided to look up the specs for the RF power transistors and noticed that one was for HF and the other was for VHF.  And, from these specs, it looks like the VHF mosfet can easily handle 2 meters.
>
>Does this mean that the LPA is the 2-meter amplifier for the new 2-meter option for the K3 or does this VHF spec apply to 6 meters only?
>______________________________________________________________
[snip]

Tom, N5GE

[hidden email]
K3 #806 with SUB RX, K3 #1055, PR6,
XV144, XV432, KRC2,
W1, 2 W2's and other small kits

1 K144XV on order

http://www.n5ge.com
http://www.swotrc.net

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