[Milsurplus] question - on BNC RF connectors

[John Hutchins]

Thanks -
The interchangeability problem  would make sense if the middle male pin 
were bigger/longer may be they are.
I will have to research this further. DRAT!
Hutch


On 8/31/2013 10:27 AM, Jim Haynes wrote:
> On Sat, 31 Aug 2013, Mike Feher wrote:
>
>> However, from what I recall, BNCs are interchangeable as the only 
>> difference between the two is the dielectric loading within the 
>> connector.
>
> Don't think so.  I had a bad experience one time.  We had installed
> a computer lab using ThinNet, which was an Ethernet technology that
> used RG-58/U coax cable, BNC connectors, and coax tees on the
> transceivers when then plugged into 9-pin D style connectors on the
> back of the computers.  This came shortly after the original Ethernet
> which used 1/2" coax cable and either "vampire taps" drilled into the
> side of the cable, or N connectors on the transceivers.
>
> As soon as the lab came into use students were complaining that they
> were getting disconnected from the file server machines and losing
> their work.  After a lot of head scratching we discovered that we
> had bought 75-ohm BNC coax tees, and they made intermittent contact
> with the 50-ohm BNC connectors on the cables and transceivers.
>
>
>