[Pafgbt] Soldering new dipoles

[Karl Warnick]

Bob,

We may have a mechanical stress issue with these dipoles. The design is 
fairly robust, but the dipole arms are quite heavy. I wonder if the 
softer solder may still actually be better, though, as there is less 
risk of cracking and catastrophic failure.

Karl

On 1/22/2013 10:47 AM, Bob Simon wrote:
>     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.
> bob..
>
>
>
> On 1/22/2013 12:38 PM, Dennis Egan wrote:
>> Are these intended to be soldered with eutectic solder or silver solder?
>>
>> Karl Warnick wrote:
>>> Bob and all,
>>>
>>> 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?
>>>
>>> Karl
>>>
>>>
>>>
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>>
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-- 
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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