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#17
July 23rd 03, 04:57 AM
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W7TI wrote in message ... On 22 Jul 2003 23:20:36 GMT, oSaddam (Yuri Blanarovich) wrote: It's not holding by four holes, but by being screwed by the jacket. Screwing the connector body onto the coax jacket provides weather proofing and mechanical "connection" between the cable and connector. What you did is to expose the watersucking braid to rain and braid will eventually break off at the junction of braid.solder/braid (tiny hair wires). If you never use the coax outside and don't rock it, you might be OK. snip I agree, the "watersucking" braid needs to be waterproofed if used outdoors. But can you picture "horrible" impedance jump because of your action? Cecil will never forgive you! snip Good point. I will do a test on 144 MHz and see if there is a measurable difference. The diameter of the connector is larger than the diameter of the braid, but only for about 1/2 inch or so. At microwave freqs that would be a no-no, but then who uses PL-259s for microwave? I'll report back what I find. -- 73, Bill W7TI I have NEVER soldered those damned holes. I remove the outer cover and "pick" the braid all round. Then I remove the inner cover (center conductor)and tin it. Then I fold the braid back over the remaining out cover and then screw on the adaptor (if any) onto the braid. Then I tighten the adaptor onto the body of the connector and tighten with pliers. Then I solder the center wire as usual. If there is any braid left I trim it off with a knife. This compares with the "old" way and does not cause any more absorption--one ought to moisture- proof one's outside connectors anyway. Actually, in my experience, soldering those stupid holes causes trouble of its own. With the braid soldered, the braid suspends the feedline anyway, right? This means that the braid and the center pin are in the same "room", as it were. All it takes is one eensy weensy wire of that braid to get down into the center and short out the whole thing. By folding the braid back AWAY under the adaptor (or under the rear of the PL-259 body) it isolates the assembly. Besides, it is easier to unsolder a connector and use it again. It does work. and I have been doing it for over 30 years. 73 Jerry K4KWH |
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