Thanks Lyle!

James K2QI

-----Original Message-----
From: Lyle Johnson [mailto:[email protected]] 
Sent: Saturday, January 09, 2010 10:42 AM
To: James Sarte
Cc: [email protected]
Subject: Re: [Elecraft] K3 New DSP Replacing


> How can we ensure the LPF is there once we receive our rev D boards? 

Look for either:

(a) a small piggyback board on the back of the DSP board near the 
speaker amplifier IC (U1, at the upper left corner of the PCB as you 
face it in normal orientation with the component side of the board 
facing you, or

(b) an IC (U30) and a number of components surrounding it to the right 
of the speaker amplifier IC (U1).

Note that Rev D refers to the "assembly level" of the DSP board, *not* 
the raw PCB revision level.

If you are still uncertain, after you receive your new DSP board 
assembly, send me a private email with photos of both  sides of the DSP 
board and I'll let you know if it is equipped with the LPF or not.

73,

Lyle KK7P

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