Gerhard,
The pads in your photo appear to be ground-plane pads. Ground-plane pads
require greater heat energy to solder, because the heat is absorbed and
radiated by the larger surface area. Increasing you soldering iron temp
to about 426 Deg C (800 Deg F) will solve this problem.
--
73, Rod N0RC
----- Original Message -----
From: "Gerhard Schwanz" <[EMAIL PROTECTED]>
To: <elecraft@mailman.qth.net>
Sent: Friday, January 28, 2005 7:24 AM
Subject: [Elecraft] Bad joints on KPA100 again - with photo...
Hi again,
just took a photo. You see it seems to affect only a special kind of
hole (see picture). You can see on the picture that other holes work
well.
http://www.gs-roboter.de/problem.htm
Iron is temp regulated at 330 deg C. Same like before. I already changed
iron and solder. To no avail.
73 again.
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