F1KGX"
Cc: ;
Sent: Friday, July 31, 2009 7:34 AM
Subject: Re: [Elecraft] K2/KPA100: External Amplifier Keying Test (PA Key)
Problem
> Hideki,
>
> Yes, I would try re-soldering Q9.
> No harm will come to the K2 with this problem, but it will not be able to
> key an
Hideki,
Yes, I would try re-soldering Q9.
No harm will come to the K2 with this problem, but it will not be able
to key an external amplifier.
73,
Don W3FPR
JF1KGX wrote:
> Don,
>
> I have checked the below several times. But everything looks fine.
> And I also checked my DMM with small value o
no plan to connect an external amplifier.
Thank you,
Hideki
JF1KGX
- Original Message -
From: "Don Wilhelm"
To: "JF1KGX"
Cc: ;
Sent: Thursday, July 30, 2009 4:16 AM
Subject: Re: [Elecraft] K2/KPA100: External Amplifier Keying Test (PA Key)
Problem
> Hideki,
&
itself is something wromg.
>
> Thank you,
> Hideki
> JF1KGX
>
> - Original Message -
> From: "Don Wilhelm"
> To: "JF1KGX"
> Cc:
> Sent: Wednesday, July 29, 2009 6:47 AM
> Subject: Re: [Elecraft] K2/KPA100: External Amplifier Keying Tes
raft] K2/KPA100: External Amplifier Keying Test (PA Key)
Problem
> Hideki,
>
> With power off, check the resistance from the source of Q9 to ground. If
> you can check from the lead of Q9 rather than the solder connection. If
> it is not zero ohms, you have a soldering proble
Hideki,
With power off, check the resistance from the source of Q9 to ground.
If you can check from the lead of Q9 rather than the solder connection.
If it is not zero ohms, you have a soldering problem there.
If the source of Q9 is well grounded, next check the voltage at the Q9
gate during
Somebody has asked the same before. But nothing has been replied.
Now I have the same problem.
Page 49 of the KPA100 instructions calls for testing the resistance between
ground and the tab of Q9 on the KPA100 board (or center conductor of the PA
KEY
output jack, J7).
According to the instructio
Page 49 of the KPA100 instructions calls for testing the resistance between
ground and the tab of Q9 on the KPA100 board (or center conductor of the PA KEY
output jack, J7).
According to the instructions, the resistance should drop to less than 3 ohms
when the K2 is put into TUNE mode. Mine o
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