Immaterial to my question as to where the gentleman saw two different
shield types, Jim.
Moreover, I'm aware of this as others on the list are as to the 'history' of
RG numbers.
But, did you see this webpage:
http://everyspec.com/MIL-SPECS/MIL-SPECS-MIL-C/MIL-C-17_75F_46031/
(I didn't think I would have to 'litigate', this but it would appear I do.)
Note especially on that webpage the link to "MIL-C-17_75F_NOTICE-2"
(Note: To view those documents, first click each link then click the
"Download file" button to get a copy of each respective pdf file.)
Which contains this excerpted text:
MIL-C-17/75F (NOTICE-2), MILITARY SPECIFICATION SHEET: CABLE,
RADIO FREQUENCY, FLEXIBLE, COAXIAL, 50 OHMS, M17/75-RG214 AND
M17/75-RG36G (28-MAR-2008) [S/S BY MIL-DTL-17/75F]., MIL-C-17/75F,
dated 16 April 2003, has been reviewed and determined to be valid for use
in acquisition.
MIL-C-17/75F
NOTICE 2
28 March 2008
Custodians:
Army - CR
Navy - EC
Air Force - 11
DLA - CC
Preparing Activity:
DLA - CC
Reviewer Activities:
Army - AM, AT, CR4, MI
Navy - AS, MC, OS, SH
Air Force - 19, 99
DLA - IS
-------------------------------
Perhaps you can explain who all those 'custodians' and 'reviewers' are? Does it
look like this
mil spec covering coaxial cable has been reviewed within the last 50 years?
de AA5CT Jim
PS
Also for reference see: MIL-DTL-17H, DETAIL SPECIFICATION: CABLES, RADIO
FREQUENCY, FLEXIBLE AND SEMIRIGID, GENERATION SPECIFICATION FOR (04 AUG 2006)
[SUPERSEDING MIL-C-17G]
Link: http://everyspec.com/MIL-SPECS/MIL-SPECS-MIL-DTL/MIL-DTL-17H_5802/
Note also this excerpt of the Times Microwave cable catalog:
https://disti-assets.s3.amazonaws.com/cdmelectronics/files/datasheets/4697.pdf
.
. On Saturday, May 16, 2020, 07:46:27 PM CDT, Jim Brown
<jim@audiosystemsgroup.com> wrote:
Repeating my earlier comment, which is the most important one --
RG-numbers have not been a spec for half a century. They are a generic
descriptor, telling us Zo and approximate o.d., and nothing more.
Rather, we should be specifying (or talking about) a particular part
number from a particular manufacturer. My last print copy of Belden's
catalog is probably 15 years old. It lists 52 RG59 cables, 64 RG6s, 18
RG8s, and 32 32 RG11s.
Contemporary MIL specs use a very different numbering system.
73, Jim K9YC
On 5/16/2020 4:18 PM, AA5CT wrote:
> 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.
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