[Elecraft] K3 - No speaker output

[Wayne Burdick]

The final addition to the AF amp protection circuitry was phased into production about a year ago. I'm trying to determine what the first S/N was. We'll also be making this available as a mod kit shortly.

There have been a few other improvements to the AF amp circuitry, all phased into production a long time ago. These are listed on the K3 mods page. The K3 owner who posted about not having speaker output has a very old K3 (~S/N 300) which had none of the upgrades. AF amp problems are now exceedingly rare.

73,
Wayne
N6KR


On Jan 15, 2014, at 3:21 AM, Bill W2BLC <w2blc at nycap.rr.com> wrote:

> Is the improved circuit in production K3s and, if so, at what serial number did that start?
> 
> Bill W2BLC
>