I have not observed a low power issue in my K3. OTOH, in my experience the K3S
PA has been a huge disappointment. One reason for buying a K3S was a hope that
the TX IMD would be improved with FETs. This would no doubt have been true if
Elecraft designed the radio for 50 VDC.
Wes N7WS
On 1/5/2019 3:16 PM, K9MA wrote:
I've always felt that the KPA3 in my K3 was marginal. For example, I've never
been able to get more than about 80 W out of it on 15 meters. (And that's at
about 14.5 V) Is the KPA3A any better?
73,
Scott K9MA
On 1/5/2019 15:23, Robert Friess wrote:
Hank,
The 2SC2782 is not internally matched and is the only part ever used in the
KPA3. The KPA3A uses MOSFETs.
73,
Bob, N6CM
On Sat, Jan 5, 2019 at 11:04 AM HP <[email protected]> wrote:
Anyone know if the Toshiba 2SC2782 transistors used in the K3 power amp
have internal matching (mos cap and wirebonds ) ?
Or did the K3 power amp ever use Motorola MRF247 transistors ?
Hank K7HP
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