FW: K2-100 Parasitic

[srife]

        Tom, I just passed your RFC-10 mod on to Brent, WB4X. I copied the
list as well.


Stan Rife
W5EWA
Houston, TX
K2 S/N 4216
 

-----Original Message-----
From: Brent Sutphin [mailto:[hidden email]]
Sent: Sunday, May 14, 2006 10:27 AM
To: Stan Rife
Subject: Re: [Elecraft] K2-100 Parasitic


Stan, I am very interested in this mod.  I sold my last KAT100 because of
this problem.  I would like to have another one if I can fix the reset
problem.  Do you have the info on the mod and if so please email it to me.
I just searched Tom's website and did not see it.

Thanks
Brent  WB4X
----- Original Message -----
From: "Stan Rife" <[hidden email]>
To: <[hidden email]>
Sent: Sunday, May 14, 2006 9:56 AM
Subject: RE: [Elecraft] K2-100 Parasitic


Tom, have you done the N0SS RFC-10 mod yet?

Stan Rife
W5EWA
Houston, TX
K2 S/N 4216


-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of Tom Althoff
Sent: Sunday, May 14, 2006 8:42 AM
To: [hidden email]
Subject: Re: [Elecraft] K2-100 Parasitic


Add me to the list of people experiencing the K2/KPA-100/KAT-100 40M high
power reset problem.

Since my KAT-100 is built into the base of my K2/100 I do not have the
option of moving the KAT-100 farther from the K2/100.

One observation I made back when I was trying to track the problem down was
that it did NOT seem to happen when I ran on a 12V car battery on my desktop
but DID happen when I used my Astron 20A switching supply.   It was not a
conclusive test but I'll try again next week.

How many others who are experiencing this erratic 40M behavior (resets the
K2 etc) are also using switching supplies?

Anyone having problems with a K2/100 and KAT-100 combo ONLY on 40M please
contact me off-list and I'll keep track of all those who are affected by
this problem.   One person is a fluke,  two people is a coincidence, three
people is a trend and four or more people is a problematic symptom that
needs looking into.

- Tom K2TA

----- Original Message -----
From: "Ken K3IU" <[hidden email]>
To: <[hidden email]>
Sent: Sunday, May 14, 2006 8:28 AM
Subject: [Elecraft] K2-100 Parasitic


> I also have experienced this problem on 3 different K2/100s. I had moved
the
> my KAT100 a couple feet from the K2/100 which reduced the magnitude of the
> problem. Tuning on low power prevented the problem. After talking to Tom,
> n0ss, I moved RFC-10 further away from the RF connector (J2). I'm not sure
> exactly how far I moved it but is was probably 2 or 3 mm. I no longer have
> the problem. I have moved the KAT100 back beneath the K2/100 and now
> experience no problems tuning with high power on 40 meters. I have sent
the
> info on this to the present owner of one of the other K2/100s that
displayed
> this problem and will make this "mod" to the third one in 2 or 3 weeks
when
> the local owner returns to town. After I get my hands on the local one,
I'll
> put a note on the reflector about the results.
>
> I really don't know exactly what causes the problem or why moving that RFC
a

> silly little millimeter or 2 corrects the problem, but it worked here!
>
> 73,
> Ken K3IU
>
> -----Original Message-----
> From: [hidden email]
> [mailto:[hidden email]] On Behalf Of walter renner
> Sent: Sunday, May 14, 2006 7:54 AM
> To: ElecraftList
> Subject: [Elecraft] K2-100 Parasitic
>
> While reading a post by Stan, W5EWA and his experince with a problems on

the
> 40 meter band with parasitic occilations, I realized that I was also
having
> the same thing happening to my setup. When using the K2-100 with the
KAT100
> tuner on the 40 meter band it caused the tuner to act erratic on high
power.
>

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