[R-390] Minibnc connectors (really MB connectors)

[Tisha Hayes]

I had stuck with the SMA/SMB form factor as there is a chassis mounting
hole to contend with if you remove the existing MB connector. The MCX
connectors I have were suited for a much smaller chassis opening.

SMA requires that you thread that little thing in place, kind of a pain in
the keester when working in the back corners. SMB is a snap coupling that
you just press down on the cable.

I only modded one radio in this manner, my primary '390A where I added a 12
KHz roofing filter (Rockwell/Collins torsional filter) and it only took the
move of a single coax cable. For a while I was getting all worked up about
MB connectors and just decided to bite the bullet and go with the SMB
connector on the coax coming off of the RF deck. The two connectors on the
roofing filter can (that is screwed to the back wall of the chassis) and
the connector on the IF deck.

Tish, "the crazy radio lady"

On Fri, Jul 25, 2014 at 7:58 AM, Bob Camp <kb8tq at n1k.org> wrote:

> Hi
>
> If you go the “replacement” route, there are also things like the MCX that
> are a *lot* more common. You may run into locations where an SMA / SMB /
> SMC is simply to large. I haven’t done the conversion so no idea if they
> fit everywhere or not …
>
> Bob
> KB8TQ
>
>
>