(no subject)

[bill4570]

Hi there,

Anybody have any good ideas about where to connect to the K2 circuitry to pick off a PTT low keying line.  The K2/100 has this available on the back panel, but the QRP version doesn't.  Any ideas?  Any curent limitations?

Bill,  W7QQ
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[Don Wilhelm-3]

Bill,

I beleive you are asking about an Amp Keying line for the basic K2 --
Take a look at the AMP keying partial kit from Elecraft and also look at Tom
Hammond's website www.n0ss.net for an updated version - I believe Elecraft
will be adopting Tom's improved Amp Keying circuit for the K2, but I don't
know that with any degree of certainty - I am not an 'insider' for such
Elecraft business decisions.  I do know that Tom's circuit works FB.

OTOH, if you are asking about a CW 'PTT' input to the K2 to interrupt keying
until an external PTT signal is present, take a look at my website
http://w3fpr.qrpradio.com article on CW PTT for the K2.  This circuit will
prevent keying the K2 until an 'OK to transmit' signal is received from a
sequencer or footswitch - works great for the VHF crowd that needs to delay
the RF output until all switching is ready for RF or for those who have
amplifiers with slow T/R switching.


73,
Don W3FPR

> -----Original Message-----
>
> Anybody have any good ideas about where to connect to the K2
> circuitry to pick off a PTT low keying line.  The K2/100 has this
> available on the back panel, but the QRP version doesn't.  Any
> ideas?  Any curent limitations?
>
> Bill,  W7QQ
>

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[Stephen W. Kercel]

Fellow Elecrafters:

The new rig arrived from Alan today, and I expect to put it on the
air tomorrow.

What is considered an acceptable level of SWR for a K2/100?

73,

Steve Kercel
AA4AK
K2 S/N# 5383


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[Vic K2VCO]

Stephen W. Kercel wrote:

> What is considered an acceptable level of SWR for a K2/100?

The latest K2/100 firmware and modification level will allow an SWR of
up to 2:1 before it starts reducing the power level to protect the
finals.  You can operate with higher SWR, but you will have less power
output.
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
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[Don Wilhelm-3]

Steve,

Strive for SWR < 1.5 although the KPA100 will not throtle back power level
until SWR > 2.0 is exceeded.

73,
Don W3FPR

> -----Original Message-----
>
> The new rig arrived from Alan today, and I expect to put it on the
> air tomorrow.
>
> What is considered an acceptable level of SWR for a K2/100?
>
> 73,
>
> Steve Kercel
> AA4AK
> K2 S/N# 5383
>
>

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