[TowerTalk] Crimping PL-259s, Installing PL-259 Connectors

K7GCO@aol.com K7GCO@aol.com
Sat, 20 Nov 1999 02:09:10 EST

In a message dated 19.11.99 12:37:40 Pacific Standard Time, K7GCO writes:

<< CC:  steve_fraasch@adc.com
    Applying silicon to the PL259 and SO239 threads is a must.  Use a Q tip 
inside the PL259 and a tooth brush on the SO239.  Do you have evidence that a 
very light coat of silicone on the PL259 center conductor is conductivity 
detrimental on a dry center connection?  I'll have to run a high power test 
and see if it heats dry or coated.
     On the old PL259's, water could get by the center pin insulator through 
2 small holes.  I used to spray the center insulator with acrylic spray and 
let it run into the soldered connector a few times and then after it dried, 
coat around the pin with silicone rubber, I never ever had one leak when 
untaped.  I did tape behind the barrel.  The newer connectors have no holes 
in the center dielectric but I still coat it with silicone rubber.
      If one doesn't solder the shield of polly foam coax fast, the foam 
overheats and flows up through the shield and you have to start over.  I've 
wrapped the shield end with a very fine copper wire on the end and tined the 
shield over the foam very quickly.  File any high spots if necessary.  I then 
inserted the tined shield onto the connector and did a quick solder job 
through the holes with no foam bleed out.  I drill the 4 holes one drill size 
larger and bevel the holes.  It's easier to get the soldering iron tip in the 
hole down to the tined or untined shield.  It gives more solder grip area on 
the shield.   
 k7gco >>

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