K3? KXV3A RX Ant, IF Out & Xvrtr Int question using LP-PAN, w/ Rev. B RF board

[dbp tds.net]

Hi-
 I read that K3 RF boards (Rev. H3 and later) sold about 09/01/09 had
a different value resistor, somewhere on the RF board that allowed for
a 10dB increase in signal to the I.F. output for use with LP-PAN and
other panadapters.  My RF board is a rev. B.
 Elecraft has a kit with the correct resistor, its order number is K3IOBUFFKT.
 Does anyone happen to have the value of the resistor and Elecrafts'
directions as to where it goes? I don't want to wait for Left Coast
time if I don't have to.
 Thanks,
Dave K1OPQ
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[Iain MacDonnell - N6ML-2]

On Wed, May 26, 2010 at 6:08 PM, dbp tds.net <[hidden email]> wrote:
> Hi-
>  I read that K3 RF boards (Rev. H3 and later) sold about 09/01/09 had
> a different value resistor, somewhere on the RF board that allowed for
> a 10dB increase in signal to the I.F. output for use with LP-PAN and
> other panadapters.  My RF board is a rev. B.
>  Elecraft has a kit with the correct resistor, its order number is K3IOBUFFKT.
>  Does anyone happen to have the value of the resistor and Elecrafts'
> directions as to where it goes? I don't want to wait for Left Coast
> time if I don't have to.

Dave,

See: http://www.elecraft.com/K3/mods/IF_Output_Buffer_Gain_Mod_Rev_A.pdf

GL,

    ~Iain / N6ML
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[Alan Bloom]

Hi Dave,

Go to http://www.elecraft.com/ and clock on "K3 Mods + App Notes".
Scroll down a couple entries and click on "IF Output Buffer Gain
Modification" to get the complete instructions.

The resistor is a 13k by the way.  The value is not critical; a 12k
would work fine.  It can either be a leaded or surface-mount type.

Al N1AL


On Wed, 2010-05-26 at 21:08 -0400, dbp tds.net wrote:

> Hi-
>  I read that K3 RF boards (Rev. H3 and later) sold about 09/01/09 had
> a different value resistor, somewhere on the RF board that allowed for
> a 10dB increase in signal to the I.F. output for use with LP-PAN and
> other panadapters.  My RF board is a rev. B.
>  Elecraft has a kit with the correct resistor, its order number is K3IOBUFFKT.
>  Does anyone happen to have the value of the resistor and Elecrafts'
> directions as to where it goes? I don't want to wait for Left Coast
> time if I don't have to.
>  Thanks,
> Dave K1OPQ
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html

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