K3 10 Watt Version - How much actual power out?

[Dean44]

I presently have a K2 with 15 to 17 watts out. When I need QRO it runs my AL-811H amp up to a few hundred watts so I have never needed the 100 watt finals.

I am thinking that I will be able to do the same thing with the K3 as long as it has about the same output.

For those with the 10 watt model, it would be helpful to know what your actual power out is.

Thanks!

Dean
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[Matt Zilmer]

Into a good [50+j0]  load, max is 12W.  

Just buy the PA.  It's a steal.

matt W6NIA
K3 #24

On Sat, 16 Jan 2010 23:27:25 -0800, you wrote:

>I presently have a K2 with 15 to 17 watts out. When I need QRO it runs my AL-811H amp up to a few hundred watts so I have never needed the 100 watt finals.
>
>I am thinking that I will be able to do the same thing with the K3 as long as it has about the same output.
>
>For those with the 10 watt model, it would be helpful to know what your actual power out is.
>
>Thanks!
>
>Dean
>______________________________________________________________
>Elecraft mailing list
>Home: http://mailman.qth.net/mailman/listinfo/elecraft
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>
>This list hosted by: http://www.qsl.net
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[Val-12]

Dean,

K3 is QRP compared to K2. 12W only!

73 Val LZ1VB

>I presently have a K2 with 15 to 17 watts out. When I need QRO it runs my
>AL-811H amp up to a few hundred watts so I have never needed the 100 watt
>finals.
>
> I am thinking that I will be able to do the same thing with the K3 as long
> as it has about the same output.
>
> For those with the 10 watt model, it would be helpful to know what your
> actual power out is.
>
> Thanks!
>
> Dean

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[Dave, G4AON]

Dean, running the driver "flat out" or indeed the PA at full power
creates a high level of 3rd order IMD. If you run the K3 around 1/4
power the IMD on SSB transmit reduces by around 10 dB. It's not that the
K3 is particularly bad in this regard, almost all 12 Volt PA
transceivers are like it. My recommendation would be to opt for the 100
Watt PA and run into your linear at 15 ~ 25 Watts or so.

73 Dave, G4AON
K3/100 #80
===============
I presently have a K2 with 15 to 17 watts out. When I need QRO it runs
my AL-811H amp up to a few hundred watts so I have never needed the 100
watt finals.

I am thinking that I will be able to do the same thing with the K3 as
long as it has about the same output.

For those with the 10 watt model, it would be helpful to know what your
actual power out is.

Thanks!

Dean

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[N5GE]

On Sat, 16 Jan 2010 23:27:25 -0800, "Dean" <[hidden email]> wrote:

I have the 100 watt version, but when the rig changes over to low
power I can hear a relay click.  If I check the power out with the
Control software of the W2 my output is 11.9 watts.  Some rigs may be
different.  My voltage drops to 11.5 volts from 13.2 with the key down
due to a long power cord from my voltage source to the K3.  I suspect
the output would be higher if the cord were shorter or heavier.

When I am operating on 30m and feel like I need the full 200w there I
set the power on the K3 at around 3 watts.  Driving my Alpha 87A with
that power gets me 200w on 30m.

73,

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

>I presently have a K2 with 15 to 17 watts out. When I need QRO it runs my AL-811H amp up to a few hundred watts so I have never needed the 100 watt finals.
>
>I am thinking that I will be able to do the same thing with the K3 as long as it has about the same output.
>
>For those with the 10 watt model, it would be helpful to know what your actual power out is.
>
>Thanks!
>
>Dean
>______________________________________________________________

[snip]

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