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Part 15 FM Could Perform A Real Public Service If Power Was Increased Slightly

Part 15 AM in Southern California has a problem; the expanded is nearly full during the day and packed at night with multiple stations on any given frequency. 1620 during the winter is only good for a few hours a day in some areas, 1610 can be used in many areas but subject to interruption from traffic advisory transmitters.
The only solution is the FM band; in many areas outside the big cities the band has plenty of real estate available. Small towns throughout California have very few signals, many with none. Many towns have had their local stations taken by major broadcasters like Clear Channel and moved to bigger markets; Tehachapi, California is one such town, an area of about 30,000 not including inmates had its local station moved to Lancaster, Ca. by Clear Channel and is now a repeater for KYSR Santa Monica/Los Angeles. If an emergency was to place such as an earthquake (their last major in 1952) many parts of the Tehachapi area have no FM signals, no cable, and only weak AM signals from way out of town, authorities would have no way of providing emergency information to Tehachapi’s citizens. (For the record Tehachapi’s second licensed FM is programmed from Palmdale, Ca. and has little to no signal in the COL. and has never broadcast from or to Tehachapi).
Tehachapi is just an example of a widespread problem, the only solution is Part 15 FM and for the FCC to raise the power like they have done in countries like New Zealand; New Zealand allows 300 milliwatts and seems to have no problems with planes crashing and emergency frequencies being jammed by poorly designed FM transmitters (the same FM transmitters barred from sales in the US). Sometimes serving the public interest should take a priority to serving the corporate interest of the NAB. Lets face the facts; the sole reason part 15 FM power is limited is to protect the interest of the NAB and not public safety, that ruse of planes crashing and emergency communications being jammed is solely intended to instill fear in the uneducated public, the beneficiary of this scam is the NAB and its member stations.
With the thousands of low power transmitters sold into this country and on the air, if there was any truth to them causing harmful interference to aircraft and emergency services; planes would be crashing everyday and emergency services would be hindered from performing their services, none of that happens. Do you think Norway would allow 10 watts transmitting power on FM unlicensed if they thought they would cause harmful interference to emergency services?
It should be our mission as community broadcasters to educate the public by proving to them that today’s low power transmitters don’t cause harmful interference like the ones sold twenty years ago. The best way to do this is at a public fair etc., have your station set up a booth, preferably right next to the sheriffs booth. Program their frequencies into a scanner, while your station is herd playing on a near by radio. It does not take very long before the visitor realizes they are being lied to by the FCC and the NAB, We explain the real deal to our visitors, and ask them to pass it on, do it enough times and the FCC will have no choice but to come clean and admit they are really agents working on behalf of the NAB and their deep pocketed lobbyist. Inference is not really a concern of the FCC, that can easily proven by inference the FCC considers acceptable; such as that allowed to be caused by licensed broadcasters to closely spaced.
Warning:Don’t do the demonstration in FL or NJ

Steve
www.radiobrandy.com
 
Re: Part 15 FM Could Perform A Real Public Service If Power Was Increased Slight

Amen to that!!! I understand that in Canada, Industry Canada (which regulates their technical standards) allows unlicensed FM TX's to put out something like 1000 uV/M @ 3 meters, 4 times what is allowed here in the US.

Even an increase to around 400 or 500 uV/M would be an improvement - or perhaps just enough signal to provide clear stereo @ around 1/4 mile.
 
I remember when Ireland allowed unlicensed FM in the 1980s. Friends built a station there and no
trouble.

In the USA part 15 is now more restrictive than it was 30 years ago. Back then, harmonics didn't
cause as many problems because we didn't use so many higher frequencies. The FCC allowed
people to build their own transmitter.

In the 1980s, it became more restricted, you could have 1mvm at 10 feet. Now it's one twentieth that at .5mvm at 10 feet.

What happened to change the FCC rules? High powered pirates in New York City and Miami messed up
comunications at airports. They forgot to install a low pass filter. People argued for type certified eqipment which limited coverage to field strength, not tx power.

I don't see the FCC lightening up as there are those campaigning that part 15 could mess up
emergency services. People are scared.
 
Re: Part 15 FM Could Perform A Real Public Service If Power Was Increased Slight

"Sometimes serving the public interest should take a priority to serving the corporate interest of the NAB. Lets face the facts; the sole reason part 15 FM power is limited is to protect the interest of the NAB and not public safety, that ruse of planes crashing and emergency communications being jammed is solely intended to instill fear in the uneducated public, the beneficiary of this scam is the NAB and its member stations."
_______

Note that never have I had any financial connection with the NAB. But facing facts, the belief quoted above is incorrect (sorry).

The original purpose for the compliant and unlicensed operation allowed by the FCC under Part 15 AM & FM was to permit the use of "phono oscillator" and such systems that could transmit the output of an audio source (record player, baby monitor etc) to an AM or FM radio receiver in the same household, and NOT as a "Community Broadcast Service" with unique programming deserving recognition/protection equal to, or even above that of licensed broadcast stations.

The field strengths produced by fully FCC-compliant Part 15 AM/FM systems were set with respect to the field strengths needed by an average AM/FM receiver within the area of a typical home to receive such signals with an acceptable signal-to-noise ratio -- and in mono, no less.

Increasing the legal, unlicensed Part 15 AM/FM radiated fields permissible in the USA in effect would create a new class of broadcast service. And no problem, if this is the explicit and stated goal of such promoters.

Let's be honest. The field strength resulting from the suggestion quoted above will exceed the original purpose of unlicensed Part 15 AM/FM systems.

RF
 
Re: Part 15 FM Could Perform A Real Public Service If Power Was Increased Slight

Regarding Part 15: most on this board and others would take that to mean un-licensed AM & FM broadcasting.
"Sometimes serving the public interest should take a priority to serving the corporate interest of the NAB
Note that never have I had any financial connection with the NAB. But facing facts, the belief quoted above is incorrect (sorry).
No that belief is correct "its mine", the public interest and safety should come before the N.A.B. interest.
Who do you think lobbied congress so strongly against LPFM? with more bull than my steer could put out in a lifetime; It was the NAB, whos interest do you think they were protecting? I promise you it was not the public interest.
There's more:
Who blew a fuse back in the late 70's when the FCC considered allowing 1 watt un-licensed broadcasting on AM & FM? it was the N.A.B. lobbing against it.
When the F.C.C. entertained a second FM band it was the N.A.B. that lobbied against it.
DAB was also heavily lobbied against by the N.A.B., DAB works just fine in Europe and Canada.
Who lobbied against XM Radio? it was the N.A.B. (Originally it was going to be free)
Who was involved in killing off class D 10 watt FM? N.P.R. and the N.A.B.
Lets face it the N.A.B. has never served in the public intersted.
RFry I'm surprised you never worked in broadcasting in anyway, if you did you were financially benefiting from the N.A.B.
Increasing the legal, unlicensed Part 15 AM/FM radiated fields permissible in the USA in effect would create a new class of broadcast service. And no problem, if this is the explicit and stated goal of such promoters.
I think that was my stated goal in my original post:
Un-licensed AM & FM broadcasting rules need to be amended to allow increased power in the public interest, who do you think would put up a fight over that? The boy scouts! No the N.A.B.
You can learn more about the N.A.B. bulling tactics here from a post back in 04, it will bring you up to speed real fast www.radiobrandy.com/BroadcastBullies1.html
Steve
www.radiobrandy.com
 
Steve Miller said:
Amen to that!!! I understand that in Canada, Industry Canada (which regulates their technical standards) allows unlicensed FM TX's to put out something like 1000 uV/M @ 3 meters, 4 times what is allowed here in the US.

Even an increase to around 400 or 500 uV/M would be an improvement - or perhaps just enough signal to provide clear stereo @ around 1/4 mile.

You are limited to a single transmitter running the same programming though.

no multisite or clustering setups allowed.

hardly seems to be a good trade off.
 
Flying-Dutchman said:
High powered pirates in New York City and Miami messed up
comunications at airports. They forgot to install a low pass filter. People argued for type certified eqipment which limited coverage to field strength, not tx power.

I don't see the FCC lightening up as there are those campaigning that part 15 could mess up
emergency services. People are scared.

speaking of pirates... Radio and TV Marti, two of the worlds biggest pirate stations run by the US government with the expressed purpose of interfering with another country and using your tax dollars to do it.

people seem to forget about these. although very rarely it pops up on a news cast.
 
XRQKFM said:
New Zealand allows 300 milliwatts and seems to have no problems with planes crashing and emergency frequencies being jammed by poorly designed FM transmitters (the same FM transmitters barred from sales in the US).

this is the best license exept system i've seen and would probably have no problems in the US.

they had their chance to remedy things with the DTV transition. they could have eliminated TV channel 5 & 6. Give this spectrum to LPFM, and Part 15. Limit the maximum ERP on this band to 100 Watts. allow Part 15 FM 1 Watt. Reserve specific frequencies to Part 15 FM so they will not interfere with LPFM.
 
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