[Elecraft] Age of a K3S. Serial # 105XX

[Bob McGraw K4TAX]

Thanks for the info and update.

73

Bob, K4TAX


On 10/20/2017 3:20 PM, Mark E. Musick wrote:
> John,
> I was informed here on the reflector. I think it was Wayne that sent the
> e-mail describing the mods. It is also on the website in the K3/K3S mods
> section.
> Here are the mods and I think this will answer Bob's, K4TAX question as
> well.
> The repair report says the following:
> IMD improvement KLPA to rev B3, KPA3A to Rev C9.
> KPAIO3MDKT (This adds a capacitor to the KPA3A I/O board to reduce fan noise
> on transmit)
> KPOD Ready, FP R82 to 6.8 Ohm, R60, 66, and 75 to current values. 7T
> capacitor. This provides power to the KPOD directly from the front panel
> jack for the KPOD. Early versions of the K3S below approximate serial #
> 10700-10800 require the KPOD to be powered from the K3S 12 Volt accessory
> socket on the back of the radio or powered from an external power supply or
> wallwart.
> John, if you or Bob, K4TAX have any other questions, let me know and I will
> try and answer them.
> If I have missed something or have something incorrect, I'm sure Don or
> someone else will chime in.
>
> 73,
> Mark, WB9CIF
>