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The one Antenna to rule them all

Posted: Tue Nov 03, 2009 10:50 am
by Bigfella78
Ok the ruling party (WIFE) has said I can put one more antenna on the roof..

I don't even know if this is possible but I'd like to use one antenna to:

Use my Scanner, CB, and make an access point for my wifi network...

Any suggestions?

Re: The one Antenna to rule them all

Posted: Tue Nov 03, 2009 1:14 pm
by vk6hgr
Bigfella78 wrote: Use my Scanner, CB, and make an access point for my wifi network...
You'll need at least two antennas for that...

Re: The one Antenna to rule them all

Posted: Tue Nov 03, 2009 2:24 pm
by Bigfella78
vk6hgr wrote:You'll need at least two antennas for that...
Yeah I thought so.. a different one for the wifi.. I wonder if I can make it look like one..

Re: The one Antenna to rule them all

Posted: Tue Nov 03, 2009 4:34 pm
by robbage
Why do you need the Wifi on the roof?

Re: The one Antenna to rule them all

Posted: Tue Nov 03, 2009 10:55 pm
by VK6ZMS
So we can get free internets

What band CB do you use ?

Re: The one Antenna to rule them all

Posted: Wed Nov 04, 2009 10:35 am
by Bigfella78
VK6ZMS wrote:So we can get free internets
Yup and cause I can..

Just 40 ch UHF.

Re: The one Antenna to rule them all

Posted: Wed Nov 04, 2009 11:33 am
by Tyranus
so reasoning for UHF is to keep you out of trouble
reasoning for WiFi free interweb which saves the money :P she's gotta buy that...??

Re: The one Antenna to rule them all

Posted: Wed Nov 04, 2009 1:01 pm
by Bigfella78
Tyranus wrote:so reasoning for UHF is to keep you out of trouble
reasoning for WiFi free interweb which saves the money :P she's gotta buy that...??
"But more than one antenna on the roof will look ugly.."

I've got the TV aerial on the old foxtel pole that is bolted to the side of the house and it pops out through the roof. I was thinking of running a mast along side it and having the antenna about 2 metres above roof height. Should give me pretty good signal for the area.

I have a steel frame roof and it cause's issues with radio tramissions.. Even the baby monitor has issues..

Re: The one Antenna to rule them all

Posted: Thu Nov 05, 2009 12:05 pm
by Bigfella78
Ok next stupid question.. Can the Antenna for the scanner share the cable with the TV antenna? I already have a TV point near when I'm going to set up the scanner? or would it be better to avoid interference and install new cable?


The one I was thinking off was this one.. Thoughts?
http://www.prestigecom.net.au/index.php ... ts_id=1897

Re: The one Antenna to rule them all

Posted: Thu Nov 05, 2009 1:20 pm
by Fastlane
Bigfella78 wrote:Ok next stupid question.. Can the Antenna for the scanner share the cable with the TV antenna? I already have a TV point near when I'm going to set up the scanner? or would it be better to avoid interference and install new cable?


The one I was thinking off was this one.. Thoughts?
http://www.prestigecom.net.au/index.php ... ts_id=1897
different impedence, so no..

Re: The one Antenna to rule them all

Posted: Thu Nov 05, 2009 2:17 pm
by Bigfella78
on the cable?

Re: The one Antenna to rule them all

Posted: Thu Nov 05, 2009 2:36 pm
by Tyranus
In the whole system really. Impedance of TV coax and assosciated peripherals are 75 ohms. Where as all radio's and scanners that I've seen are 50 ohms.

Re: The one Antenna to rule them all

Posted: Thu Nov 05, 2009 3:15 pm
by VK6ZMS
It wont make a lot of difference for a RX only unit.
But yeah run a separate cable to avoid RF noise etc from the telly.
That discone will work with UHF CB into repeaters that you have line of sight to but if you want to work simplex over a distance it wont have any gain.

Re: The one Antenna to rule them all

Posted: Thu Nov 05, 2009 4:17 pm
by robbage
TV antenna works ok except remember it's horizontal so you will lose most of the signal from anyone transmitting with a vertical. (ie most fixed and mobile)

Re: The one Antenna to rule them all

Posted: Mon Nov 09, 2009 9:13 am
by Bigfella78
robbage wrote:TV antenna works ok except remember it's horizontal so you will lose most of the signal from anyone transmitting with a vertical. (ie most fixed and mobile)
So I read.. I was thinking of installing another antenna and using the same cables as the TV antenna. But I think I'll install a new cable. They will be on the same pole. Given up on the wifi idea.. for now.. So Scanner and UHF CB on one antenna will work..