[Elecraft] DSP Revision Question

[Matthew Zilmer]

Rev C => Rev D may have been component changes only.  I believe Rev D changed the LPF corner frequency.  The board fab level is likely the same, Rev C.  That', or Rev C board fabs are compatible with Rev D assembly changes.

Normally (not sure on Elecraft's 'normal') a paper label is placed over silk assembly rev label to indicate a change in components.

Matt Zilmer
Consultant 
W. 909.394.6052
C. 909.730.6552
E. mzilmer at magellanGPS.com
279 E. Arrow Hwy, San Dimas, CA. 91773

Pecca Fortiter



-----Original Message-----
From: elecraft-bounces at mailman.qth.net [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Dave Anderson, K4SV
Sent: Tuesday, March 05, 2013 8:09 AM
To: Elecraft
Subject: [Elecraft] DSP Revision Question

Hi All,

I was reading the DSP upgrade docs and am under the impression that all new Main DSP PCBs being shipped are to be Rev D

I just completed assembly of SN6855 and noticed that my brand new main DSP PCB reads Revision C on the silk screen.  It appears according to the upgrade link here   http://www.elecraft.com/K3/mods/dsp_rev_c_information.htm   a sticker and or some PCB modifications are to be done to older PCBs.   During close inspection I was unable to find a sticker like the one pictured on the Rev B PCB in the docs.   I found other square stickers with plenty of numbers and letters but nothing showing clearly a D on it.

So this leads me to ask, How is a Revision C PCB being modified to be a Revision D?  I see no cuts and jumps, no small PCBs, no added parts, nothing out of the ordinary.

So do I have a Revision C or D DSP???

Thanks in advance,
 
Dave Anderson, K4SV
Tryon, NC
 828 777-5088
 
www.K4SV.com
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