[Milsurplus] connector ID

Thu, 21 Nov 2002 21:55:54 +0200

Jay,

yea, forgot about those, Amphenol makes 'em, per the new Allied
catalog, but interestingly, Amphenol says their 75 ohm BNCs will
fit with standard 50 ohm BNCs "without damage or intermittence."

I suppose it really depends on the female center conductor and
how much it will flex and return to normal size.

Thanks,

73
Sheldon
WA4MZZ/SV7

[email protected] wrote:

> There are 75 ohm BNC's also that do not mate with 50 ohm types.Had me fooled once!
> Jay
>
> -----Original Message-----
> From: Sheldon Daitch [mailto:[email protected]]
> Sent: Thursday, November 21, 2002 11:38 AM
> To: aGEnuine ham
> Cc: [email protected]; [email protected];
> [email protected]
> Subject: Re: [Milsurplus] connector ID
>
> Be careful, tho, with two categories of connectors.
>
> I have seen polarized BNC connectors that have the opposite
> center conductors.  The normal BNC male has the male center
> pin with the rotatable outer connector.  There are polarized
> BNC connectors that would have the normal outer
> rotating part of the connector but a female center conductor
> connector.
>
> Also, in better grade, perhaps the term might be precision
> grade Type N connectors, they are made for either 75 ohms or
> 50 ohms impedance.  The center conductor pin and socket
> are different sizes and in some cases, they may not mate
> properly.
>
> 73
> Sheldon
> WA4MZZ/SV7
>
> aGEnuine ham wrote:
>
> > Jim:
> >
> > Ummmm, I don't know exactly where to start.  Connector series designate
> > interface (mating) standards, i. e. type "N" connectors fit other type
> > "N", "BNC"s fit other "BNC"s, "TNC"s fit "TNC"s, and so on.  Within each
> > series are plugs, jacks, panel mounts, bulkhead mounts, adapters, and
> > undoubtedly others which I have forgotten.  Also within each series are
> > different 'number' connectors for different size cables.  I suspect maybe
> > type "N" is the champion in that regard, as I have seen "N"plugs for
> > everything from tiny RG-300 to 3&1/2 inch Heliax.
> >
> > The UG-495 is the number of the male plug which fits RG-17 to HN.  For
> > RG-8 size like RG-214, the number is UG-59.  There are also other numbers
> > with other features like armor clamps, etc.
> >
> > This information is principally derived from T. O. 31-1-59, "Handbook
> > Installation Practice Manual", "Flexible R-F Coaxial Cables and
> > Connectors" which every milsurplus enthusiast should have.  My copy is
> > unfortunately incomplete.  Which brings up the questions, Robert:
> > Is there a current version of this T. O.?  Do you have for sale reprints
> > of any of this series?
> >
> > 73,
> > George
> > W5VPQ
> >
> > On Wed, 20 Nov 2002 09:15:01 -0600 "James Duffer"
> > <[email protected]> writes:
> > > The "HN" RF coaxial connector that I ran into on the Omni antenna
> > > used in
> > > ATCBI (Air Traffic Control Beacon Interrogator)allowed the use of a
> > > RF
> > > coaxial cable RG-214 which is less than an inch in
> > > diameter.....could the HN
> > > type have had more than one series with different size openings to
> > > allow
> > > different size coaxial cable?? Or is the connector other than the HN
> > > type???
> > >
> > > Has the originator of this thread received private e-mail which has
> > > suggested other possbilities....inquiring minds wish to know
> > >
> > > Jim, wd4air
> > >
> > >
> > >
> > >
> > >
> > >
> > > >From: aGEnuine ham <[email protected]>
> > > >To: [email protected]
> > > >CC: [email protected]
> > > >Subject: Re: [Milsurplus] connector ID
> > > >Date: Tue, 19 Nov 2002 22:54:37 -0600
> > > >
> > > >Joe:
> > > >
> > > >HN series connector (plug) for RG-17,  RG-18, and RG-177, and
> > > whatever
> > > >their new equivalents are.
> > > >
> > > >73,
> > > >George
> > > >W5VPQ
> > > >
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