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n2jtx
join:2001-01-13
Glen Head, NY
 ·Optimum Online
| reply to Matt
Re: great.
said by Matt  :
So, once again, we are left with the HAM guys, who occupy a HUGE portion of the radio spectrum and don't want to lose it.
HUGE!?!? Gee I never thought we hams occupied a "HUGE" amount of spectrum but maybe my ability to do simple math is off. Between .540MHz (540KHz - low end of the AM broadcast band) and 80MHz hams have:
1.800MHz to 2.000MHz = 200KHz
3.500MHz to 4.000MHz = 500KHz
7.000MHz to 7.300MHz = 300KHz
10.000MHz to 10.150MHz = 150KHz
14.000MHz to 14.350MHz = 350KHz
18.068MHz to 18.168MHz = 100KHz
21.000MHz to 21.450MHz = 450KHz
24.890MHz to 24.990MHz = 100KHz
28.000MHz to 29.700MHz = 1700KHz (1.7MHz)
50.000MHz to 54.000MHz = 4000KHz (4.0MHz)
A grand total of 7850KHz or 7.85MHz of amateur radio spectrum out of a total of 80MHz, less than 10% of all of that. HUGE? Of course the rest of that is shared by broadcasters, military, public safety, aviation, etc. They will get hit worse than the hams but are probably not aware of the train wreck heading down the tunnel.
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I support the right to keep and arm bears. | |
Matt
You can't fix stupid
Premium
join:2003-07-20
Jamestown, NC
 ·North State Commun..
 ·Corporate Colocation
| said by n2jtx :
said by Matt :
So, once again, we are left with the HAM guys, who occupy a HUGE portion of the radio spectrum and don't want to lose it.
HUGE!?!? Gee I never thought we hams occupied a "HUGE" amount of spectrum but maybe my ability to do simple math is off. Between .540MHz (540KHz - low end of the AM broadcast band) and 80MHz hams have:
1.800MHz to 2.000MHz = 200KHz
3.500MHz to 4.000MHz = 500KHz
7.000MHz to 7.300MHz = 300KHz
10.000MHz to 10.150MHz = 150KHz
14.000MHz to 14.350MHz = 350KHz
18.068MHz to 18.168MHz = 100KHz
21.000MHz to 21.450MHz = 450KHz
24.890MHz to 24.990MHz = 100KHz
28.000MHz to 29.700MHz = 1700KHz (1.7MHz)
50.000MHz to 54.000MHz = 4000KHz (4.0MHz)
A grand total of 7850KHz or 7.85MHz of amateur radio spectrum out of a total of 80MHz, less than 10% of all of that. HUGE? Of course the rest of that is shared by broadcasters, military, public safety, aviation, etc. They will get hit worse than the hams but are probably not aware of the train wreck heading down the tunnel.
That's 2Khz through 4.0Mhz.
Sorry, that doesn't touch anything, AM or FM, 800Mhz (Emergency) or anything I am worried about.
I feel for the HAM guys, but perhaps they should innovate like always. Just "learn" the interference and devise equipment that filters it out.
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TripOnThis.net Administrator
"Security by obscurity is no security at all. Don't believe the hype." (c) MntlCase | |
hams2
@midco.net
| reply to n2jtx
fema usages hf two. and so do alot of disaster agencys so if you don't care about bpl causeing problems to these agencys who try to help save lives during a disaster then who are you. The U.S.Coast Guard uses hf to contact ships in trouble and helps when ever needed by useing hf in areas where nothing else works. and if you think bpl only cause local problem then you totally wrong. HF you are able to talk long distance at very low power i know some who talked from montana to russia with only 5 watts. so inference will travel a long distance with only a few watts. that my 2cents. | |
rf_engineer
join:2003-08-04
USA
| reply to Matt
said by Matt :
I feel for the HAM guys, but perhaps they should innovate like always. Just "learn" the interference and devise equipment that filters it out.
Suggestions like this may work in the movies, but not here, and it actually could be a detriment to BPL. If you play the noise floor game, hams and other HF spectrum users can merely raise the bar by using more power to overcome the signals. Anecdotal test results have indicated that power levels as low as several watts can bring down some BPL systems.
Hams have actually innovated over the years, to the point where ham communications can occur with signal levels that expensive lab equipment has difficulty measuring. If a BPL system operating within FCC Part 15 limits drops a signal tens of dB higher than a signal in the noise floor someone is attempting to receive, it's difficult to pull this out with technology. Believe me, if it could be done, it would have been already and someone would be making some money doing it 
The point here is that it is a needless waste to destroy good spectrum with worldwide communications capabilities with a wired network transmitting data for a couple hundred feet, especially when proven non-radiating alternatives exist. BPL might have been acceptable in a time before cable, DSL, and WiFi, but this time has passed. | |
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