The LEGAL limit for unlicensed operation in the FM as well as other bands is in Part 15....It is NOT based on power but a field intensity..In the FM band of 88-108, it comes CLOSE to 100mw ERP (Effective Radiated Power) but not exact. Bluetooth is usually limited to 30ft. 100mw on FM MAY get you legally 300 ft....A CB radio would cover that better but then how many of the attendees would have CBs oin their cars? Multiple FM Part15 xmtrs placed in the right spots would work IF You can find enough clear frequencies. Then you have to get the audio to them
Christopher W. Boone WB5ITT Trustee, W5APX Chief Engineer, iHeartMedia New Orleans On Wed, Apr 8, 2020 at 12:01 PM john Parmalee via BVARC <[email protected]> wrote: > I have watched this thread and thought about it and an idea struck me. > Why not use a service monitor. An IFR or equivalent will cover the FM > band, I don't know it it will modulate to 75 kHz without distorting so > you have to turn the receiver up a bit. I don't know what size of parking > but I suggest an antenna cut to frequency up 15 or 20 feet or you might > try a mobile mag mount stuck to a pipe vertical. it will be short but has a > coil in the base that will extend it. Make sure it has something metal to > mount to to. > > I defiantly think you need a run through with enough time for a redo. > > As far as the FCC is concerned you are a pirate station and illegal. As > far as I know under part 15 you can run a low power AM transmitter but no > provisions for the FM band. It is quite common though for translated audio > in services and such with no enforcement action if there is no interference > to anyone. Choose your frequency by listening carefully, > > I expect a full parking lot will be different RF wise from an empty, Get > that antenna in the air, you will need the margin. > > Call me if I can help, let me know how it went. Good luck and may god > bless your service.. > > John Parmalee > [email protected] > 281-380-3811 > K5VGM WI2XLJ > In a message dated 3/31/2020 4:45:33 PM Central Standard Time, > [email protected] writes: > > Found this on Google; haven't verified with the legal code. > > > https://learnchristmaslighting.com/what-fm-transmitter-do-i-need-for-my-christmas-light-show/ > What FM Transmitter Do I Need for My Christmas Light Show? – Learn > Christmas Lighting > <https://learnchristmaslighting.com/what-fm-transmitter-do-i-need-for-my-christmas-light-show/> > Okay, maybe they aren’t “turning the dial” quite like the old days, but if > you want your display to be heard, you need an FM transmitter.. Even though > setting up some large PA speakers might seem like a good idea, you’ll > quickly lose the friendship of your neighbors! > learnchristmaslighting.com > > > > ------------------------------ > *From:* BVARC <[email protected]> on behalf of Ravi Patrick Ratnala > via BVARC <[email protected]> > *Sent:* Tuesday, March 31, 2020 4:40 PM > *To:* BRAZOS VALLEY AMATEUR RADIO CLUB <[email protected]> > *Cc:* Ravi Patrick Ratnala <[email protected]> > *Subject:* Re: [BVARC] Fm transmitter for Easter service > > Marty, > > I've read the same thing - somewhere - but I can't find anything > permitting it in the regs, so I don't know if it's true. If it is, I > imagine it would be for things like bluetooth devices that are designed to > pump spotify from your phone through your car's radio. If so, I'd suspect > that "100 feet" is a dreamy maximum, and that it would sound terrible in > the real-life scenario you describe. > > But as always, FleaBay to the rescue: a 6-watt FM transmitter! For just a > hundred bucks, you can start your very own pirate radio station anywhere on > the commercial FM dial. This thing should provide nice, punchy audio to > your entire church's congregation. Very, very illegal, though. > > > https://www.ebay.com/itm/Retekess-6W-FM-Transmitter-Stereo-Station-Antenna-Wireless-Factory-Church-Home/324108794811?hash=item4b7663bbbb:g:48UAAOSwBfhcExIJ > > How about just setting up a PA system? > > 73 de N5OL > > On 3/31/2020 3:01 PM, Martin Blaise via BVARC wrote: > > I read that anything 25 milliwatts or less for 100 feet is ok > > On Tue, Mar 31, 2020 at 3:00 PM Alexander Park via BVARC <[email protected]> > wrote: > > I'm not sure that will be legal without an license > > On Tue, Mar 31, 2020, 2:09 PM Martin Blaise via BVARC <[email protected]> > wrote: > > My church would like to do a parking lot service for Easter and my pastor > asked me what fm transmitter we could use to broadcast the service from the > church to the cars per social distancing. Email or call me at 713-305-2148 > thanks Marty > ________________________________________________ > Brazos Valley Amateur Radio Club > > BVARC mailing list > [email protected] > http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org > > ________________________________________________ > Brazos Valley Amateur Radio Club > > BVARC mailing list > [email protected] > http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org > > > ________________________________________________ > Brazos Valley Amateur Radio Club > > BVARC mailing > [email protected]http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org > > > > > <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient&utm_term=icon> > Virus-free. > www.avast.com > <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient&utm_term=link> > ________________________________________________ > Brazos Valley Amateur Radio Club > > BVARC mailing list > [email protected] > http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org > > ________________________________________________ > Brazos Valley Amateur Radio Club > > BVARC mailing list > [email protected] > http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org >
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