[Pafgbt] Soldering new dipoles

[Bob Simon]

Hi Karl,
      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?
      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.
Thanks,
bob..


On 1/22/2013 2:30 PM, Dennis Egan wrote:
> That's what I assumed but I saw some blackening on the picture and 
> just wanted to check.
>
> 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?
>
> Dennis
>
> 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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