It would be nice if it was measured that way but the restriction is that you cannot radiate more than 0.5 watts in any direction. Stacking dipoles will reduce the radiation towards the sky and ground and directs it more horizontally.
Most of the commercial stations here in Tauranga are only using something like 200 watt transmitters but effectively radiating around 1500 watts towards the city.
Say you have a 1-watt transmitter. How can changing your antenna radiate more power than 1 watt?
Is it not the case that changing your antenna will radiate in a different pattern (for example further horizontally but less far vertically) but the total power radiated would still be 1 watt, no?
Here in Nelson it seems as though there's an LPFM station on every second frequency on the guard bands! Thank you very much, Mainland TV and your ungainly...
... Same with Mainlands crap channels polluting the UHF TV band. The advantage they have is being up on the port hills their FM coverage carrys a long way. ...
I got my data from DSE http://www.dse.co.nz/cgi-bin/dse.storefront/43bcb8fb0c266b922740c0a87f990788/Export/catalogs/SUP1000031 Would be a Good Place to Start. ...
Johnno
valentine@...
Jan 5, 2006 6:36 am
... That's brilliant, thank you very much. I dismissed DSE when I found they didn't seem to _sell_ RG-58.... I've got a 3.7 dBi stacked dipole, and a 1 Watt...
... transmitter, ... uncle ... wind ... This ... Try this http://www.timesmicrowave.com/cgi-bin/calculate.pl Why do you have a stacked dipole? Just a normal...
I agree they don't give a rats about the rules by going over them in Nelson you will be doing exactly what they themselves have done in other parts of N.Z...
M.B & J.D Duffy
DuffyFamily@...
Jan 5, 2006 7:05 am
... You and others will be pleased then to hear that NZ on Air are refusing to give him any of the money that the Govt handed out for regional tv stations ...
Hi Michael, Stacked dipoles offer no benefit to LPFM. You already have sufficient transmitter power, so what's the point in reducing your radiation pattern? ...
... in reducing your radiation pattern? ... Well, someone _gave_ me a stacked dipole antennae, so I don't see particularily fit to complain really :D -Michael...
He'll only consider it martyrdom, the evil empire ganged against him. In light of the content of his stations maybe we could all search our hearts and send...
M.B & J.D Duffy
DuffyFamily@...
Jan 5, 2006 8:55 pm
The RG-58A Cable seems to be hard to find in Christchurch, I ended up getting it from Nelson and sent down. You need to remember the longer the cable more loss...
Johnno
valentine@...
Jan 5, 2006 9:11 pm
If you don't mind me asking, what meter are u getting? Sounds like a useful tool. Cheers Leigh www.HeavenFM.com <http://www.heavenfm.com/> ... From:...
You can only get more range by increasing your radiated power. If your radiated power is already at the limit, then changing the antenna won't help (because...
Here's what *I* don't get: Say you have a 1-watt transmitter. How can changing your antenna radiate more power than 1 watt? Is it not the case that changing...
SWR METER Easily tune your transmitter up to maximum RF output power or check your antenna match with this 50 ohm SWR meter. The design specification allows...
Johnno
valentine@...
Jan 5, 2006 11:38 pm
Could we get a website link to that product and a price please. Does sound very handy indeed. Johnno <valentine@...> wrote: SWR METER Easily tune your...
It would be nice if it was measured that way but the restriction is that you cannot radiate more than 0.5 watts in any direction. Stacking dipoles will reduce...
http://www.veronica.co.uk/a-access.htm ... From: "Michael Rowse" <valdusradio@...> To: <LPFM_Radio@...> Sent: Friday, January 06, 2006...
Johnno
valentine@...
Jan 6, 2006 2:34 am
Antennas focus the enrgy in a particular direction, similar to how a torch focusses the beam from the light bulb. So you get more energy being radiated in some...
Auckland uses 5,000W transmitters to radiate 50,000W from the Sky Tower. That's 50,000W per FM station :-) Some stations are running lower power transmitters...
Doesn't make sense to me.... all through my physics degree we knew the laws stated that energy cannot be 'created' it can only be transformed from one form...
Keep in mind that the specs are Eirp, that's EFFECTIVE radiated power. Think of a garden hose. To shoot water across the yard you can either turn the handle...
You are right, the energy is being transformed from radiating upwards and downwards, to radiating sideways. Furthermore, on the Sky Tower, the energy is...
And virtually none goes up towards beach haven. I can recall the horror the night that bfm disappeared. Soon after that I was left with just the xtian station,...
Offline 
Send Email