After CW transmit K2 receiver is muted.

[Arato Andras]

Dear Addicted Elecraft Users,

please help me fixing the following problem. I built the first K2 in HA
land (still not many owners in Hungary unfortunately). My K2 No is #2398.
I mainly use it for QSO-s and am not very happy if I have to open it
because of any error. Until now there were no problems, but recently my
receiver is muted more often and often after CW transmit. A short key down
helps, but not always.

Transmitting with 100 W causes the problem more often than with QRP. Some
times Hi Reflected message appears while receiver is muted. The message
disappears if the short time transmit "solves" the problem. The phenomena
comes without KAT100 too.

Have anybody faced this malfunction?

73! de Andras HA4AA (ex: HA5BDU).
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[Tom Hammond-3]

Hi Andreas:

My DIRECT reply to you was rejected. See below:

   [hidden email]
     SMTP error from remote mailer after RCPT TO:<[hidden email]>:
     host smtp-in.kfki.hu [148.6.0.25]: 550 <[hidden email]>:
     Recipient address rejected: Access denied. Your site is banned
     because of the unsolicited mail messages received from it.

So, I am replying via the reflector... hope you receive this reply.

Some questions first, please...

 >please help me fixing the following problem. I built the first K2 in HA
 >land (still not many owners in Hungary unfortunately). My K2 No is #2398.
 >I mainly use it for QSO-s and am not very happy if I have to open it
 >because of any error. Until now there were no problems, but recently my
 >receiver is muted more often and often after CW transmit. A short key down
 >helps, but not always.
 >
 >Transmitting with 100 W causes the problem more often than with QRP. Some
 >times Hi Reflected message appears while receiver is muted. The message
 >disappears if the short time transmit "solves" the problem. The phenomena
 >comes without KAT100 too.

1) Does the K2 truly 'mute'? Or can you hear VERY STRONG signals
weakly? And can you hear the CW sidetone when it is 'muted'?

2) Does this occur on a specific band? Or does it occur on ANY band?

3) You state that the "HI REFLECTED" message appears "while receiver
is muted"... safe to assume that the message ONLY appears during TX
and NOT during RX mode?

4) You state that the problem occurs with/without the KAT100. DO you
mean that you have actually REMOVED the KAT100 from the K2 and the
problem is still present? Or than you have only set KAT100 to CAL
mode (so it does not attempt to tune) and the message still appears?

73,

Tom   N0SS

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[Arato Andras]

Hi,

On Mon, 21 Aug 2006, Arato Andras wrote:
> receiver is muted more often and often after CW transmit. A short key down
> helps, but not always.
>
> Transmitting with 100 W causes the problem more often than with QRP. Some
> times Hi Reflected message appears while receiver is muted. The message
> disappears if the short time transmit "solves" the problem. The phenomena
> comes without KAT100 too.

I had no RF ground at my portable station. Can it cause the problem above?
Now I have a good ground and it seems working OK.

73! de Andras HA4AA.
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