Cool! This is actually something I'd really like to see in the US, perhaps on some of the spectrum to be freed up from analog TV.
Studio1 said:
What we do have though is the next best thing - "General User Radio Licence". This effectively a "free for all" that allows anyone anywhere to set up an FM station (on selected frequencies) and transmit whatever they want, as long as their EIRP does not exceed 500 mW. You don't need to obtain a licence, and there is no fee to pay to use the frequency.
The frequencies currently available here are 88.1 through to 88.7 and 106.7 through to 107.7 [all are 100 kHz increments], with some restrictions including no use of 88.5, 88.6 or 88.7 within 120 km of the Sky Tower (in Auckland) as there is a commercial station operating off there on 88.6. This station's licence was issued long before the GURL system was even thought about and they won't shift the station to another frequency. So, in the biggest city of all, there are only four usable frequencies at the lower end of the band!
There has been talk for a long time about increasing the EIRP to 1 watt - but the controlling authority over radio usage here is nervous about this as there are fixed land mobile services at the lower end of the band (around 87.5) and the very sensitive and highly protected aviation band at the top (starting at 110 MHz for radio beacons).
That's another reason why they won't allow the use of anything below 88.1 at the moment - they are worried someone will splatter on the land mobile services.
Already there has been one station closed down - it was operating on 88.1 and due to lack of filtering on the output, it was getting right into the front end of a land mobile repeater on 84 MHz.
I am aware of stations that flout the 500mW rule - I know of one operator that is currently running 20 watts into a 3 element yagi.
Another station I heard was transmitting on 108 MHz which is a total no-no. This is a guardband, and despite two emails to the radio authority, I don't believe anything has been done yet.
Few if any of the operators of these "radio in a box" systems have any practical training in RF or broadcasting - and consequently rely on what the station sounds like on-air to determine if things are set properly.
A few of them may have a cheap SWR/power meter if they are fortunate, but given that many stations are run by people who have only enough money to string together the basic items, any kind of technical gear or test equipment is usually off the list.
With the move to digital broadcasting in its infancy here, I can see a time when eventually the commercial operators will relinquish many of their high power frequencies. When this happens, I suspect a larger chunk of the FM spectrum will become available for community groups and GURL operators.
Whether this is a good move or not remains to be seen.
Until they tighten up on the requirements for these low power users, or free up some more space, they are really the "Pirates" of the country.