LDG AT-11 construction pitfall (oops!)

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From: Scott Rosenfeld NF3I (ham@w3eax.umd.edu)
Date: Wed Feb 12 1997 - 22:33:04 EST


My friend Bill, K3MHZ, bought one of these dandy AT-11 kits during the
group purchase.

With a fair amount of building experience between us, he brought over his
board with the 14-pin header and we agreed "there no way it's gonna fit
in that board with them thar holes. They are toooo small."

So we proceeded to take a PC board drill and remove a tiny, teeny bit of
material from each hole.

Little did we realize that the material we'd removed was plating.

Plating makes good contact on double-sided boards, which this is.

After three hours of diagnosing and checking and rechecking the board
tonight, we agreed, "seems like there's contact missing here. I wonder
if the board's missing some plating..."

The plating we'd removed. We pulled the plastic collar from the 14-pin
header and soldered the TOP side of the pins to the board. Of course,
the plastic collar would no linger fit, so we just mashed the connector
onto the pins and VOILA!

Perfectly working unit.

Moral:

Never drill out plated thru holes. Now back to operating.

* Scott Rosenfeld NF3I Burtonsville, MD FM19mc QRV 80-10/6/2/440 *
*** 6m 75 grids worked on 8 watts *** HF 138 cfmd * QRP-L #147 ***
** QRP ARCI #9054 ** DXCC/WAS/WAC *** 100% dipole powered HF/6m **
* 301-549-1022 h / 301-982-1015 w *** 145.490- 147.225+ PL 156.7 *


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