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Post by Deleted on Oct 26, 2017 20:54:18 GMT
Some Unusual Things In This Pirate StoryDavina Elena Mendes was found to be operating illegally with an over-powered signal at 87.7 FM in Dorchester, Massachusetts. The unusual things noticed in this story are that 87.7 is not mentioned as an unauthorized frequency, and the allowable power stated by the Boston FCC office is 100 uV meter/at 3 meters, which does not match the 250 microvolts per meter/3 meters stated in 15.239. Read This For Yourself and Tell Us What You Think
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Post by Deleted on Oct 27, 2017 0:21:18 GMT
I believe that for the frequency ranges 30-88 Mhz, the Part 15 limit is actually 100uv/m at 3 meters (I took that from an amateur radio site, and it should be in a table somewhere in the Part 15 regulations.
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Post by Admin on Oct 27, 2017 0:33:07 GMT
Part 15.209 specifies operation between 30 and 88 mHz shall not exceed 100 uV/mtr except as defined in paragraph g.;
(g) Perimeter protection systems may operate in the 54-72 MHz and 76-88 MHz bands under the provisions of this section. The use of such perimeter protection systems is limited to industrial, business and commercial applications.
Perhaps this is where the agent came up with the 100 uV/mtr spec. Of course paragraph g does not specify what the emission limits are for those specific applications.
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Post by thelegacy on Oct 27, 2017 0:36:59 GMT
Ha ha baby finally the light of truth. We just MAY get this treasured frequency worth it's wight in Gold.
ALL HOMAGE shall be given to the mighty soldiers of 87.7 Mhz. Let's wear T-shirts saying 87.7 Mhz.
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Post by Admin on Oct 27, 2017 0:39:30 GMT
And further, "*Except as provided in paragraph (g), fundamental emissions from intentional radiators operating under this section shall not be located in the frequency bands 54-72 MHz, 76-88 MHz, 174-216 MHz or 470-806 MHz." which means unless your device is a perimeter protection system, stay out.
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Post by Druid Hills Radio on Oct 27, 2017 14:51:47 GMT
And further, "*Except as provided in paragraph (g), fundamental emissions from intentional radiators operating under this section shall not be located in the frequency bands 54-72 MHz, 76-88 MHz, 174-216 MHz or 470-806 MHz." which means unless your device is a perimeter protection system, stay out. Exactly. Operation for anything other makes one a Pirate. |
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Post by Deleted on Oct 27, 2017 16:06:59 GMT
What If
"This is the official perimeter protection system radio service broadcasting at 87.7 and warning you to stay out."
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Post by thelegacy on Oct 27, 2017 19:59:55 GMT
Lol Carl every once in a while you come up with a good one.
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Post by mark on Oct 28, 2017 5:03:20 GMT
So 87.7 isn't illegal in the US just less than half the allowed signal strength as the 88-108MHZ band.
100uV/M@3Meters....not enough to get you out of the house.
But OK to get you across a large room to a stereo with no interference from any stations.
Mark
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Post by Deleted on Oct 28, 2017 15:44:34 GMT
Well, it's not illegal if you are operating a perimeter protection (i.e., security) system that uses that frequency and has a field strength of maximum 100uv/m at 3 meters. Other uses (such as broadcasting) are illegal.
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Post by Deleted on Oct 28, 2017 17:18:24 GMT
Bits and PiecesHere and there in the FCC rules new sections get added from time to time. Sub-Part H: Part 15.701 - 15.717 is recent, and defines several frequency bands open to "white space devices", including wireless microphones. Frequency band 76 - 88 MHz is Included in 15.707b
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Post by mark on Oct 28, 2017 21:14:42 GMT
I think Carl got it!
Only a two way communication from one person to another and only 100uV/M @ 3 meters which will get you to the next room. This must have been a revision when TV vacated.
But even the agents sometimes don't know their stuff as Michael at Decade once told me.
Mark
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Post by thelegacy on Oct 28, 2017 21:34:32 GMT
And you know this might explain how the transmitters like the scotch can be sold at Walmart.
I still have my predictions for the future of 87.7 could become more legal than a gray area.
You also have to remember that place is like Dorchester Massachusetts are too close to the problem bed of New York and New Jersey that's why they wanted to make an example out of that woman.
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Post by Boomer on Nov 3, 2017 23:49:00 GMT
Right, I've seen Dollar Store transmitters that go to 87.9 and 87.7, lots of them seem to, and sometimes those are the only frequencies open.
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