[RFI] Rfi help

[AA5CT]

 Mac,

Where did you find RG214 with two different shield types? I have 
seen SPC (silver plated copper) only in my 214 cable and in the 
various 214 data sheets.

Two different shield types could affect full duplex systems that 
need low PIM (passive intermodulation) performance, which is 
why I use RG-214 in repeater work (as jumpers).


Belden:
https://catalog.belden.com/techdata/EN/8268_techdata.pdf


RFParts:
https://www.rfparts.com/rg214milc17.html


MIL SPECS:
http://everyspec.com/MIL-SPECS/MIL-SPECS-MIL-C/MIL-C-17_75F_46031/


73, de AA5CT Jim

.
.


     On Saturday, May 16, 2020, 04:23:47 PM CDT, D C _Mac_ Macdonald <k2gkk at hotmail.com> wrote:  
 
 RG-214 has two shields.  The inner shield is made of silver-plated copper wires and the outer shield is made of tinned copper wires.  Total diameter is nominally .420 inches as opposed to the .405 inches of RG-8 and RG-213.  RG-213 is what would have been named RG-8D (IIRC) and RG-214 is what would have been RG-9C.  Difference is primarily that the "new" stuff has non-contaminating outer Jacket.  Attenuation is virtually identical to RG-8 but maybe a smidge higher at upper frequency range ( again, IIRC).

73 de Mac, K2GKK/5 in OKC, OK

Sent from my iPad

> On May 16, 2020, at 14:26, Jim Brown <jim at audiosystemsgroup.com> wrote:
> 
> com
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