[Antennas] Splicing Coax
Jacqui
[email protected]
2002年6月13日 22:45:05 -0400
It is my understanding that the impedance of any coax is a function of the
distance of the outer shield to the inner center conductor and the material
between them. Once you make a splice without a proper connector you have lost
this ratio and no longer have the proper impedance. The result is high SWR. For
receiving you may not notice a difference but for transmitting it is a whole
other story. I have seen hard-line that was dented cause high SWR at 800mhz and
above. I'm sure the same applies here. So here is another vote for proper
termination if I am correct and I am sure someone will correct me if I am
wrong. Jacqui N1DVE
Jan Reimers wrote:
> Any body have any tips/tricks for splicing coax (for example RG213 or RG8/U)
> rather than using connecters/unions?
>> I was thinking of
> 1) removing half the center conductor strands on each side and soldering
> them together.
> 2) slip on a sliced piece of insulator over the joint.
> 3) somehow fudge the braid back on top. (how to solder without damagaing
> the insultor material?)
> 4) Perhaps seal with heat shrink tubing.
>> usage would be VHF and below.
>> Why do I want to do this?
> 1) I am always running out of PL259's
> 2) A good splice should be less lossy than a 259-barrel-259 junction.
>> Thanks
> Jan (VA7JNR)
> - - -
>> Your moderator for this list is:
> Larry Wilson KE1HZ [email protected]
> _______________________________________________
> Antennas mailing list
> [email protected]
> http://mailman.qth.net/mailman/listinfo/antennas