[R-390] Is this the same mini-BNC connector?

[Tom Norris]

Yes, sort of. The mini-BNC we were talking about is designated
"MB" and is the type found in the R-390A, while the "normal"
BNC is used in the R-390.

The connector from Trompeter appears to be new design and is
different from the mini-BNC found in our radios - which was the
subject of the first email.  The earlier MB connector was a bit
smaller than the M-BNC, but the new connector has better
mechanical properties and impedance characteristics.

Regarding Mike Murphy's comments on finding info on the older
style connector, I think Steve Haney - of Haney's Surplus - has
several small lots of prefabricated 75 ohm cable assemblies, or
he did earlier this year. I bought a bundle, may have a couple
extra if anyone wants. If I can find where I put them. I also need
to dig up Steve Haney's email addy.

Tom NU4G


On Jul 6, 2005, at 4:01 PM, dps4 at juno.com wrote:

>
> The mini BNC is a new connector designed in the last several years  
> to reduce the package size of the "standard BNC"  The claims are  
> 40% more connections in the same space.  The Mini will not mate  
> with the standard BNC.  The standard BNC is the one designed in the  
> 40's and used in the R390/URR.
>
> Just some info for all.
>
> 73's
>
> David Seckel
> W8GWI
>
> -- "David Hallam" <dhallam at rapidsys.com> wrote:
> I'm not sure but they don't look quite the same.  The connectors in  
> the R-390A were MB series.  I don't believe that is the same as  
> mini BNC.
>
> David C. Hallam
> KC2JD
>