Re: [BCD396XT] Re: Roof top antenna for bcd396xt
>We can also look at what’s called “Mismatch Loss”, which for whenMichael has made very good points here and is probably the best response
>calculated for a 75 ohm cable connected to a 50 ohm antenna results in a
>loss of around >0.2dB….. Not even worth considering….
>Bottom line: Using 75 ohm transmission line with a 50 ohm antenna ain’t a
>All that said, getting an outside antenna up on a pole works wonders --
>even though most broadband antennas such as a discone have no gain
>themselves, getting >one up high on a pole and connected via GOOD coax will
>let you hear stuff you never though possible.
I've seen to the original question. Very few people own equipment
sophisticated enough to see any real signal difference due to impedance
mismatch between 50 and 75 ohm coaxial feedline.
Antenna height and feed line losses are the keys to a good system. If you
have access to any low loss cable, either 50 or 75 ohm don't hesitate to use
it. Your $500 scanner will not know the difference between $500 worth of
rigid hard line or $100 worth of quality 75 ohm TV coax. Like others have
said, avoid the cheap RG-58/59 stuff unless that is all you can afford.
- I think he was meaning that this group is supposed to be focused to
396XT issues not generic scanners topics at length that are better
covered in other groups like the newscannerantenna group that was
suggested. I tend to agree. The thread on antenna suggestions is getting
long and off topic from the 386XT focus which is what I why I originally
signed up. The brief tangent is ok but the antenna and coax discussion
has been been the majority of the traffic here for a month or so..Though
at a low level it is interesting it is becoming off topic noise and
degrading the intended focus of the group.
This is just my view, all two cents of it, and it is the moderator that
has the control of discussion so I could off base. I think Clark's
response appropriate and John's follow up with the group name helpful.
On 2/2/2011 9:29 PM, johnstark wrote:
> How is antenna's and coax off topic? Last I heard both are required
> (depending on setup regarding coax) for scanners to hear what you want to
> hear. So it would seem to be very on topic.
> ----- Original Message -----
> From: "Clark Rennie" <c.rennie1@...
> To: <BCD396XT@yahoogroups.com <mailto:BCD396XT%40yahoogroups.com>>
> Sent: Wednesday, February 02, 2011 6:53 PM
> Subject: RE: [BCD396XT] Re: Roof top antenna for bcd396xt
> > Isn't there some Yahoo Antenna group that would be more appropriate for
> > this subject as it's getting
> > more off topic for Uniden BCD396XTs ?
> > Clark
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