KAT2: voltage reading

[oe9fwv]

I am in the course of finishing the KAT2 assembly.

I did the C55 adjustment like discribed on page 16:
Press T U N E button and release it when you see the display change.
Adjust C55 for an indication as close as
possible to 0 0 0 . Tap or hold T U N E again to cancel the C A L n
display and return to receive mode

I get as close as 007 - is this normal or indicating a problem?

next question:

On page 17 of the assembly manual at this point:
------
Go into TUNE mode briefly. At 5 watts, the voltage should be between 3 and
4 volts. If it is much
lower or higher than this, you probably have a wiring error in the SWR
bridge. Remove the KAT2 control
board from the L-C board and check the wiring of T1. Make sure T1's leads
are properly stripped.
------

I have a reading of only 2.4 V. I checked the T1 wiring but do not see a
mistake. Should I go on and add R6 or should I remove T1 and check it
outside the board?



73! de Werner OE9FWV

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[Don Wilhelm-4]

  Werner,

You have obtained a better than normal adjustment - normally 008 and
above is considered OK.  I believe there is a statement to that effect
somewhere in the manual.

I would guess that the 2.4 volts is OK.  That may change when you finish
the power calibration.  Connect R6 (47 ohms if the K60XV is not
installed, or 470 ohms with the K60XV) and see what happens.

73,
Don W3FPR

On 11/25/2010 6:03 PM, Dr. Werner Furlan wrote:

> I am in the course of finishing the KAT2 assembly.
>
> I did the C55 adjustment like discribed on page 16:
> Press T U N E button and release it when you see the display change.
> Adjust C55 for an indication as close as
> possible to 0 0 0 . Tap or hold T U N E again to cancel the C A L n
> display and return to receive mode
>
> I get as close as 007 - is this normal or indicating a problem?
>
> next question:
>
> On page 17 of the assembly manual at this point:
> ------
> Go into TUNE mode briefly. At 5 watts, the voltage should be between 3 and
> 4 volts. If it is much
> lower or higher than this, you probably have a wiring error in the SWR
> bridge. Remove the KAT2 control
> board from the L-C board and check the wiring of T1. Make sure T1's leads
> are properly stripped.
> ------
>
> I have a reading of only 2.4 V. I checked the T1 wiring but do not see a
> mistake. Should I go on and add R6 or should I remove T1 and check it
> outside the board?
>

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[oe9fwv]

Don,

thank you - everything looks fine. The tuner seems to work.

73! de Werner OE9FWV


Don Wilhelm schrieb am 25 Nov 2010 um 19:59:

>   Werner,
>
> You have obtained a better than normal adjustment - normally 008 and
> above is considered OK.  I believe there is a statement to that effect
> somewhere in the manual.
>
> I would guess that the 2.4 volts is OK.  That may change when you finish
> the power calibration.  Connect R6 (47 ohms if the K60XV is not installed,
> or 470 ohms with the K60XV) and see what happens.
>
> 73,
> Don W3FPR
>
> On 11/25/2010 6:03 PM, Dr. Werner Furlan wrote:
> > I am in the course of finishing the KAT2 assembly.
> >
> > I did the C55 adjustment like discribed on page 16:
> > Press T U N E button and release it when you see the display change.
> > Adjust C55 for an indication as close as possible to 0 0 0 . Tap or hold
> > T U N E again to cancel the C A L n display and return to receive mode
> >
> > I get as close as 007 - is this normal or indicating a problem?
> >
> > next question:
> >
> > On page 17 of the assembly manual at this point:
> > ------
> > Go into TUNE mode briefly. At 5 watts, the voltage should be between 3
> > and 4 volts. If it is much lower or higher than this, you probably have a
> > wiring error in the SWR bridge. Remove the KAT2 control board from the
> > L-C board and check the wiring of T1. Make sure T1's leads are properly
> > stripped. ------
> >
> > I have a reading of only 2.4 V. I checked the T1 wiring but do not see a
> > mistake. Should I go on and add R6 or should I remove T1 and check it
> > outside the board?
> >

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