[50mhz] cushcraft question

[Lance Collister]

Bill W5WVO wrote:

>Metal galling (seizure) seems to be a common problem with Cushcraft stuff. I
>suspect it has something to do with the quality of metal they use in their
>fasteners and other non-aluminum parts. Having been badly burned by this on
>a Cushcraft antenna (had to cut all the u-bolts off with a hacksaw), I now
>always use an anti-seize compound on all threads, especially on stainless
>steel fasteners. Penetrox is good, and is available from many ham radio
>dealers. Copper-based anti-seize compounds available in most auto parts
>stores has also worked fine for me, though I've heard some people recommend
>against using a copper-based compound around aluminum. Be careful on SO-239s
>that you carefully restrict it to the coupling threads, and don't let it get
>into the body of the connector, as it is conductive.
>
>Bill W5WVO
>
>Greenacres113 at aol.com wrote:
>  
>
>>i'm considering the Cushcraft  3 el.
>>
>>i've had two of their 11 el. 2 mtr fm antennas. both my dads  & mine
>>suffered coax connector seizure after a few yrs.  you can't get  the
>>pl259 off any
>>way. i cut the coax & fabricated a new plate with a new  s0239. it
>>was the only easy answer. i wonder if using 'no alox' or the common
>>electricians metal conduit helper will prevent the seizure.
>>
>>i've not had this problem on other antennas
>>
>>bob k9il
>>Moderator: Ray Brown, KB0STN
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>>
>
>
>Moderator: Ray Brown, KB0STN
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>  
>
Copper corrodes when places in contact with aluminum.  Be sure to avoid 
that!  If a copper wire or braid needs to be installed against aluminum 
be sure to first tin the copper with lead bearing solder, so that no 
bare copper contacts the aluminum!  GL and VY 73, Lance

-- 
Lance Collister, W7GJ (ex: WN3GPL, WA3GPL, WA1JXN, WA1JXN/C6A, ZF2OC/ZF8)
P.O. Box 73
Frenchtown, MT  59834  USA
QTH: DN27UB
TEL: (406) 626-5728
URL: http://www.bigskyspaces.com/w7gj
2m DXCC #11/6m DXCC #815