Swiveling BNC-To-BNC Connector For Handheld Scanner Antenna ?

Swiveling BNC-To-BNC Connector For Handheld Scanner Antenna ?

Post by Robert1 » Thu, 08 Nov 2007 01:21:30

Hi,

I know a very few handheld scanner antennas come with one already built in,
but does anyone know of a
source (assuming they exist) for a BNC to BNC that swivels between them ?

Would like to add a swivel feature to a  scanner antenna that does not
swivel.

BTW:  any opinions on whether this degrades any signals, etc. ?

Thanks,
Bob

 
 
 

Swiveling BNC-To-BNC Connector For Handheld Scanner Antenna ?

Post by F. Barry Mulliga » Thu, 08 Nov 2007 01:50:08



Quote:> ... does anyone know of a source (assuming they exist) for a
>  BNC to BNC that swivels between them ?

    I've used a pair of right-angle BNC adapters to provide a universal
joint. The arrangement allowed the antenna to sit along the side of the
scanner while clipped to a belt, without poking me in the ribs.
    And, yes, it also provided an attenuator in the process.
 
 
 

Swiveling BNC-To-BNC Connector For Handheld Scanner Antenna ?

Post by mikeFN » Thu, 08 Nov 2007 07:19:36

it will degrade the signals,
how about using a pull up telescopic, cheap and its free with the aerial.

mike


Quote:> Hi,

> I know a very few handheld scanner antennas come with one already built
> in, but does anyone know of a
> source (assuming they exist) for a BNC to BNC that swivels between them ?

> Would like to add a swivel feature to a  scanner antenna that does not
> swivel.

> BTW:  any opinions on whether this degrades any signals, etc. ?

> Thanks,
> Bob

 
 
 

Swiveling BNC-To-BNC Connector For Handheld Scanner Antenna ?

Post by Robert1 » Thu, 08 Nov 2007 21:41:54

Hi Guys,

Hi Guys,

Thanks for the suggestion of the 2 BNC right angles.
This truly fits into my category of:  "gosh, why didn't I think of that !"

Just a quick follow up"

I realize that anything in the antenna feed loop degrades signals top  some
extent, but how can (just) two BNC's degrade any to a "meaningful" extent "

I don't have the tables in front of me, but at the UHF freq's are the BNC
losses that high ?

Thoughts on ?

Thanks again,
Bob

-----------------------------


Quote:> Hi,

> I know a very few handheld scanner antennas come with one already built
> in, but does anyone know of a
> source (assuming they exist) for a BNC to BNC that swivels between them ?

> Would like to add a swivel feature to a  scanner antenna that does not
> swivel.

> BTW:  any opinions on whether this degrades any signals, etc. ?

> Thanks,
> Bob

 
 
 

Swiveling BNC-To-BNC Connector For Handheld Scanner Antenna ?

Post by F. Barry Mulliga » Fri, 09 Nov 2007 01:17:33


Quote:> I realize that anything in the antenna feed loop degrades signals
> top some extent, but how can (just) two BNC's degrade any to a
> "meaningful" extent "

    I can't tell you just how much attenuation a pair of BNC right
angles introduces, but I'd guess they'd add 1-2db. It isn't excessive
but I do know that they helped reduce some pager intermod that I was
getting, without harming the strong signals I wanted. Of course,
folding the antenna down so that it lay alongside the scanner case
blocked all but the strongest signals.
    If you want to get the exact figures, look for specs on UG-306/U
or Amphenol 31-009.