[Elecraft] K3 HAGC mod pre S/N 211 (Was: K3 noise-blanker)

[G4ILO]

Bill W4ZV wrote:
> 
> my guess is he may have had a pre-S/N 211 K3 (sans hardware AGC mod
> announced publicly on March 27 with the mod implemented in production
> units approximately mid-January).
> 

I believe that some K3's later than S/N 211 do not have the HAGC mod. Mine
is S/N 222. While installing the KPA3 yesterday I checked the area of the
mod and it looks exactly like the pictures of the unmodded board. The
resistor that was changed to a LED looks just like all the other resistors,
the two resistors that are shorted look just like resistors, and there is no
added resistor linking two points. So unless the changes made in production
were done in such a way that the board still looks the same, I must assume
my K3 does not have the mod, and possibly others post S/N 211 haven't
either.

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Julian, G4ILO  K3 s/n: 222 K2 s/n: 392
G4ILO's Shack: www.g4ilo.com
Zerobeat Ham Forums: www.zerobeat.net/smf
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