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Bob,<br>
<br>
We have 20 kits, with one soldered already, so 19 remaining. Due to
a design change, we have quite a few thin rods with the copper/gold
plating. Should we went a few of the thin rods to you, or an entire
kit perhaps?<br>
<br>
Karl<br>
<br>
<div class="moz-cite-prefix">On 1/22/2013 12:43 PM, Bob Simon wrote:<br>
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Hi Karl,<br>
Did you make any fixtures to hold the pieces in place during
soldering? If not, could you send drawings, so I could think about
how to support them? <br>
I've had better luck soldering these type things on a hot
plate, rather than a torch. In my experience, heating it up and
doing all the soldering in one session is better than doing each
joint separately. I agree, a few test pieces would help. <br>
Thanks,<br>
bob..<br>
<br>
<br>
On 1/22/2013 2:30 PM, Dennis Egan wrote:
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That's what I assumed but I saw some blackening on the picture
and just wanted to check. <br>
<br>
We would like to do these, we are currently hung up on another
job availability will improve in the next couple of weeks. Are
there any extra pieces that we could practice on?<br>
<br>
Dennis<br>
<br>
Bob Simon wrote:
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The ones we've done here in GB were soldered with SN62.
There isn't much mechanical stress on these, so the softer
solder works fine. Also, the lower melting point allows you
to get on and off the heat quickly, avoiding
damage/discoloration to the gold-plated brass.<br>
bob..<br>
<br>
<br>
<br>
On 1/22/2013 12:38 PM, Dennis Egan wrote:
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Are these intended to be soldered with eutectic solder or
silver solder?<br>
<br>
Karl Warnick wrote:
<blockquote cite="mid:50FEBF7C.3030703@ee.byu.edu"
type="cite">Bob and all, <br>
<br>
Rick suggested last fall that the Green Bank machine shop
could assist with fabrication of the new dipoles. We've
run into a snag and could use some help. The soldering
expert in our university machine shop has retired, and the
current staff have not been able to achieve the quality in
the soldering we need for the antennas (see attached).
Would it be possible for us to send the parts for the
remaining 19 dipoles to Green Bank for soldering? <br>
<br>
Karl <br>
<br>
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<pre class="moz-signature" cols="72">--
Karl F. Warnick
Department of Electrical and Computer Engineering
Brigham Young University
459 Clyde Building
Provo, UT 84602
(801) 422-1732
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