[TheList] Right Co-ax

Tue Apr 2 17:22:19 AEDT 2013

Hi Kevin,

On receivers such as scanners using 75 ohm coax such as RG6 has some 
real advantages. Mainly less loss in longer runs. Disadvantages are many 
but not usually a big deal. The hardest thing is finding suitable 
connectors in a lot of cases.

You can even use 75 ohm coax on transmitters instead of 50 ohm coax, so 
long as you are using a half wavelength multiple it acts as an impedance 
repeater and won't cause huge VSWR issues.

Oh by the way, with a receiver the loss with the two transitions from 50 
to 75 and then 75 to 50 is usually way less than the additional signal 
obtained by the lower loss in the 75 ohm cable.

Best of all, 75 ohm cable is usually way cheaper.

Regards,

Neill.

On 2/04/2013 5:52 p.m., Kevin Cosgrove wrote:
> Sorry this maybe the second posting.  I was not allowed to post the 
> first message for some reason
>
> I am at present cleaning up my antennas before the winter.  Is it 
> alright to use 75 ohm co ax or is there to much loss using it scanners
> Thanks
> Kevin Cosgrove
>
> -- 
> Like Minds Like Mine
>
>
> _______________________________________________
> TheList mailing list
> TheList at radiowiki.org.nz
> http://radiowiki.org.nz/mailman/listinfo/thelist_radiowiki.org.nz