KPA100 - L15 Inductor

[Vk2NU]

Hi All,

Just a quick query!!

I'm putting together a KPA100, and want to just confirm that the outline for Inductor L15 on the circuit board should be left empty. I can't find any reference to L15 in the manual (Revision D), but when I've looked at the online manual to search for the part, it is there, but the on-line manual is Revision C.

I'm assuming this was changed between Revision C and D ??

I just wanted to confirm this, as I have seem to an extra torroid (T50-10 black core). The manual says I should have 8, but I actually got 9.

Thanks

David, Vk2NU
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[Don Wilhelm-3]

David,

Manual Rev D is the latest, and yes, if you look at page 21 and page 41 of the KPA100 manual, you should see that C82, L15 and R12 positions are not populated.

You may have a use for that extra core someday, but 8 are sufficient in the KPA100 - you just got an extra one.

73,
Don W3FPR
 

> -----Original Message-----
> From: [hidden email]
> [mailto:[hidden email]]On Behalf Of
> [hidden email]
> Sent: Tuesday, October 10, 2006 6:46 PM
> To: [hidden email]
> Subject: [Elecraft] KPA100 - L15 Inductor
>
>
> Hi All,
>
> Just a quick query!!
>
> I'm putting together a KPA100, and want to just confirm that the
> outline for Inductor L15 on the circuit board should be left
> empty. I can't find any reference to L15 in the manual (Revision
> D), but when I've looked at the online manual to search for the
> part, it is there, but the on-line manual is Revision C.
>
> I'm assuming this was changed between Revision C and D ??
>
> I just wanted to confirm this, as I have seem to an extra torroid
> (T50-10 black core). The manual says I should have 8, but I
> actually got 9.
>
> Thanks
>
> David, Vk2NU
> _______________________________________________
> Elecraft mailing list
> Post to: [hidden email]
> You must be a subscriber to post to the list.
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>
> Help: http://mailman.qth.net/subscribers.htm
> Elecraft web page: http://www.elecraft.com
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>
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[Ron D'Eau Claire-2]

You are correct David. You should have checked off a step where you confirm
that nothing is installed in the space on the PCB for L15. (See page 21 of
the Rev. D manual, left column)

Also it's listed again as a part that is not installed on page 41 just
before you "button up" the amp.

Wayne left it on the schematic diagram so curious builders could see what it
was originally - an inductance in parallel with the secondary of transformer
T2, between the power output transistors and the t/r switch circuit - and he
added a note saying 'not used' next to it. It's on sheet 1 of the schematic
(page 70).

Ron AC7AC

-----Original Message-----
Hi All,

Just a quick query!!

I'm putting together a KPA100, and want to just confirm that the outline for
Inductor L15 on the circuit board should be left empty. I can't find any
reference to L15 in the manual (Revision D), but when I've looked at the
online manual to search for the part, it is there, but the on-line manual is
Revision C.

I'm assuming this was changed between Revision C and D ??

I just wanted to confirm this, as I have seem to an extra torroid (T50-10
black core). The manual says I should have 8, but I actually got 9.

Thanks

David, Vk2NU

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Post to: [hidden email]
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