The drive in near me used RF. If you do use speakers watch for slap back from 
big sound reflective walls. It will kill the intelligence. I remember a camper 
messing with a outdoor project. 

Sent through the international space station 

> On Apr 9, 2020, at 1:08 PM, David Hold via BVARC <[email protected]> wrote:
> 
> 
> I would try to look into a 70v multi speaker setup 
> 
> - church - may already have the amp in use for intercom 
> So all u would need to do is do the speakers a few to each row of cars.
> 
> Benefits lower volume per speaker so more intelligible less echo
> 
> I am no suggesting a setup like a drive in theater 1 speaker per car
> 
> But maybe 
> Row 1   2 speakers in middle facing the ends
> Skip a row 
> Then same on row 3 5 7 9
> 
> 
> 
>>> On Apr 9, 2020, at 12:47 PM, Martin Blaise <[email protected]> wrote:
>>> 
>> 
>> Should I tell my pastor to cancel the Easter service and just tape it?
>> 
>>> On Thu, Apr 9, 2020 at 12:35 PM David Hold via BVARC <[email protected]> 
>>> wrote:
>>> Good luck 
>>> Hate PA. All echo and distorted and unintelligible 
>>> 
>>>> On Thu, Apr 9, 2020 at 11:02 AM Martin Blaise via BVARC <[email protected]> 
>>>> wrote:
>>>> We are just going to have the pastor stand in the grass outside the church 
>>>> with an amplifier. If it is unsafe to roll down windows please let me know 
>>>> and I will contact the church and tell them not to do it. Thanks I had 
>>>> encouraged leaving parking spaces open between cars. If I am going too far 
>>>> on this let me know. Thanks. We won't have many cars there.
>>>> 
>>>>> On Thu, Apr 9, 2020 at 10:48 AM Gus Bernard via BVARC <[email protected]> 
>>>>> wrote:
>>>>> Great article, Jimmy - thanks!
>>>>> 
>>>>> Gus, KG5OFB
>>>>> 
>>>>>> On Wed, Apr 8, 2020 at 6:14 PM Jimmy Vance via BVARC <[email protected]> 
>>>>>> wrote:
>>>>>> This is a good article that discusses the subject at hand
>>>>>> 
>>>>>> https://thepublicsradio.org/episode/theec-radio-for-churches-during-coronavirus
>>>>>> 
>>>>>> --jv
>>>>>> NA5D
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>>> On 4/8/2020 12:13 PM, SETX Telecom via BVARC wrote:
>>>>>>> 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
>>>>>>>> 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 list
>>>>>>>> [email protected]
>>>>>>>> http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org
>>>>>>>> 
>>>>>>>> 
>>>>>>>>        Virus-free. www.avast.com
>>>>>>>> ________________________________________________
>>>>>>>> Brazos Valley Amateur Radio Club
>>>>>>>> 
>>>>>>>> BVARC mailing list
>>>>>>>> [email protected]
>>>>>>>> http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org
>>>>>>>> ________________________________________________
>>>>>>>> Brazos Valley Amateur Radio Club
>>>>>>>> 
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>>>>>>>> [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 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
>>>> 
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>>>> http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org
>>> -- 
>>> David Hold [email protected]
>>> ________________________________________________
>>> Brazos Valley Amateur Radio Club
>>> 
>>> BVARC mailing list
>>> [email protected]
>>> http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org
> ________________________________________________
> Brazos Valley Amateur Radio Club
> 
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