Elecraft

Fwd: Re: k2 low output solution.

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Pat n8vw

Fwd: Re: k2 low output solution.

On Fri Aug 5 23:04:11 2005, "Pat N8VW" <[hidden email]> wrote :

>
> After some more debugging it appears that the ksb2 is causing the problem.
> Removing it returns tx power to normal levels. Some might say, good you
> don't need ssb anyway.
>
> Looking at the dac u2 I find that pin 5 is at 6v when it should be ~.6v on
> tx and rx. Removing Q1 makes no difference so it appears that u2 is the
> problem.
>

Received parts from elecraft, installed and power is now back to normal.
Well, except testing with the kpa100 and a real wattmeter reveils that I
have the low-power on 20m/17m.

Hello, Elecraft it's me again!

Pat N8VW

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Don Wilhelm-3

RE: kpa100 low output

Pat,

A note to mailto:[hidden email] should get 2 new non-inductive resistors
on their way to you when Scott and Brian get back to work on Monday.

If you have not been updated on the information, the capacitor change does
not do the trick entirely, the increased value caps are OK, but simply move
the problem down a bit in frequency. The 4700 pf caps are also OK and will
be the ones shipped and recommended.

73,
Don W3FPR

> -----Original Message-----
>
> On Fri Aug 5 23:04:11 2005, "Pat N8VW" <[hidden email]> wrote :
>
> >
> > After some more debugging it appears that the ksb2 is causing
> the problem.
> > Removing it returns tx power to normal levels. Some might say, good you
> > don't need ssb anyway.
> >
> > Looking at the dac u2 I find that pin 5 is at 6v when it should
> be ~.6v on
> > tx and rx. Removing Q1 makes no difference so it appears that u2 is the
> > problem.
> >
>
> Received parts from elecraft, installed and power is now back to normal.
> Well, except testing with the kpa100 and a real wattmeter reveils that I
> have the low-power on 20m/17m.
>
> Hello, Elecraft it's me again!
>
> Pat N8VW
>
>

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Jess Gypin

Counter probe and RF probe assembly

Can someone tell me what the 10pF axial lead capacitor looks like for the
counter probe? I have looked through all of the caps that I have sorted and
cannot find an axial lead cap that is obvious. Is this cap in a package that
looks like a resistor or inductor? I have to very small beige "resistor"
looking parts that are color coded Brown-black-Brown and the other is
Grn-Brn-Grn-Gld. I am sure that the one with 4 bands is a resistor, but not
sure about the other 3 band piece. Sorry for the stupid questions, but I am
used to the "normal" packaging of caps and I see no axial lead caps anywhere
in the ones that I have. The only other one that I have that looks suspect
is the cardboard mounted ceramic orange cap that has a "1" on the face, but
I am sure that it is a 1uF and not 10 pF?

What do you think?

Jess AE0CW<><

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Craig Rairdin

RE: Counter probe and RF probe assembly

C1 is a regular old brown "103" cap. It's not "axial" at least as I
understand the word.

It's always possible I'm looking at the wrong part or I got it wrong, too.
But I remember being stumped at the same point you are until I found this
particular capacitor. I think it was in the same envelope with the rest of
the probe parts.

Craig
NZ0R
K1 #1966
K2/100 #4941 (now on the air so to speak; I need to finish the KAT100 before
I can actually transmit)

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of Jess Gypin
Sent: Saturday, August 13, 2005 2:19 PM
To: [hidden email]
Subject: [Elecraft] Counter probe and RF probe assembly

Can someone tell me what the 10pF axial lead capacitor looks like for the
counter probe? I have looked through all of the caps that I have sorted and
cannot find an axial lead cap that is obvious. Is this cap in a package that
looks like a resistor or inductor? I have to very small beige "resistor"
looking parts that are color coded Brown-black-Brown and the other is
Grn-Brn-Grn-Gld. I am sure that the one with 4 bands is a resistor, but not
sure about the other 3 band piece. Sorry for the stupid questions, but I am
used to the "normal" packaging of caps and I see no axial lead caps anywhere
in the ones that I have. The only other one that I have that looks suspect
is the cardboard mounted ceramic orange cap that has a "1" on the face, but
I am sure that it is a 1uF and not 10 pF?

What do you think?

Jess AE0CW<><

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Don Wilhelm-3

RE: Counter probe and RF probe assembly

In reply to this post by Jess Gypin

Jess,

The 10 pf axial cap is in the Frequency Probe envelope - it is less than 1/8
inch in diameter and just a wee bit longer than it is round - leads coming
out the ends. Capacitors are usually not color coded - that other object
you have colored brown-black-brown is likely a subminiature 100 uH inductor.

73,
Don W3FPR

> -----Original Message-----
> From: [hidden email]
> [mailto:[hidden email]]On Behalf Of Jess Gypin
> Sent: Saturday, August 13, 2005 3:19 PM
> To: [hidden email]
> Subject: [Elecraft] Counter probe and RF probe assembly
>
>
>
> Can someone tell me what the 10pF axial lead capacitor looks like for the
> counter probe? I have looked through all of the caps that I have
> sorted and
> cannot find an axial lead cap that is obvious. Is this cap in a
> package that
> looks like a resistor or inductor? I have to very small beige "resistor"
> looking parts that are color coded Brown-black-Brown and the other is
> Grn-Brn-Grn-Gld. I am sure that the one with 4 bands is a
> resistor, but not
> sure about the other 3 band piece. Sorry for the stupid
> questions, but I am
> used to the "normal" packaging of caps and I see no axial lead
> caps anywhere
> in the ones that I have. The only other one that I have that looks suspect
> is the cardboard mounted ceramic orange cap that has a "1" on the
> face, but
> I am sure that it is a 1uF and not 10 pF?
>
> What do you think?
>
> Jess AE0CW<><
>
>
> _______________________________________________
> Elecraft mailing list
> Post to: [hidden email]
> You must be a subscriber to post to the list.
> Subscriber Info (Addr. Change, sub, unsub etc.):
> http://mailman.qth.net/mailman/listinfo/elecraft
>
> Help: http://mailman.qth.net/subscribers.htm
> Elecraft web page: http://www.elecraft.com
> --
> No virus found in this incoming message.
> Checked by AVG Anti-Virus.
> Version: 7.0.338 / Virus Database: 267.10.8/71 - Release Date: 8/12/2005
>

Jess Gypin

RE: Counter probe and RF probe assembly

Found it. Forgot about the RF bag. Thanks to all that pointed the way!

Jess

-----Original Message-----
From: W3FPR - Don Wilhelm [mailto:[hidden email]]
Sent: Saturday, August 13, 2005 5:04 PM
To: Jess Gypin; [hidden email]
Subject: RE: [Elecraft] Counter probe and RF probe assembly

Jess,

The 10 pf axial cap is in the Frequency Probe envelope - it is less than 1/8
inch in diameter and just a wee bit longer than it is round - leads coming
out the ends. Capacitors are usually not color coded - that other object
you have colored brown-black-brown is likely a subminiature 100 uH inductor.

73,
Don W3FPR