Part15

License Free, legal, low-power radio broadcasting

Part 15ers keep your eye open

by

New concept is getting ready to hit to use multiple part15 transmitters in a network to cover more area for part 15 broadcasters. I have found a company that is offering these services. Is this legal? I ask others has anyone else heard this lately or did I just get lucky finding this out through a reliable source who is fed up.

New concept is getting ready to hit to use multiple part15 transmitters in a network to cover more area for part 15 broadcasters. I have found a company that is offering these services. Is this legal? I ask others has anyone else heard this lately or did I just get lucky finding this out through a reliable source who is fed up.

Filed Under: Uncategorized

Reader Interactions

Comments

  2. Multiple transmitters
    Multiple transmitters have been use by Part 15 broadcasters for some time. That is to say that each transmitter is physically in another location, either on the same frequency or different frequencies, and daisy chained across the coverage area. The transmitters are sync’d directly by “beat” tuning the oscillators or by using GPS syncro clock systems.

    Also the use of Part 15 2.4 and 5.8 GHz WiFi/video surveilance systems have been used as unlicensed studio-transmitter links. Some folks hard-wire the daisy chain, some use the internet to deliver remote audio to the various transmitters.

    Under the current Part 15 rules, ALL are legal.

    Several micro-power broadcasters use multiple site transmitting systems to increase their coverage. The challenge becomes, how to sync up the audio. The only transmitter I know of that is FCC certified and capable of sync’ing audio internally is the Rangemaster AM1000. A good resource to research multiple sited transmitters is the Rangemaster web site and its owner Keith Hamilton. Also Ron Erickson at Erickson Broadcast Services has been very helpful in researching multiple site technology and equipment availablity.

    “Multi-siting” for AM is cost effective, at least in the long run. FM, on the other hand, has such limited range under Part 15, multi-siting is not cost efective.

    Marshall Johnson, Sr.
    Rhema Radio – The Word In Worship
    http://www.rhemaradio.org

    • aparently, there is a fellow
      aparently, there is a fellow near redwood, ca that is doing the multi-FM linking thing.

      I think if you have the money, but not enough to buy an FM station out, maybe it is cost effective.

      For 30K I could cover most of Tucson with an FM signal legally… but I cannot buy a FM station for that.

      Now, the MAJOR downside is monitoring all those TX’s to make sure they work, and also – when some commercial station moves to your freq, you have to go manually change the freq on every one of those tx’s. UGH.