In article , Jim Hampton
wrote:
A couple of other questions for you Keith.
BPL uses frequencies between 1.8 and 80 MHz.
Question #1: Does 27 MHz CB fall between 1.8 and 80 MHz?
Question #2: Do HF radio astronomy posts use frequencies between 1.8 and 80
MHz?
Question #3: Does WWV use frequencies between 1.8 and 80 MHz?
Question #4: Do HF aeronautical frequencies lie between 1.8 and 80 MHz?
Question #5: Do HF foreign broadcasters use frequencies between 1.8 and 80
MHz?
Question #6: Will SWLs be impacted by the answer to question #5?
Question #7: I see you provide a link to short wave. Just what do you
think short wave is? (BIG hint: HF; 3 to 30 MHz, just what is being
impacted).
Question #8: I see you provide a link to scanners. You are aware that many
scanners go down to 30 MHz or so (some lower) and even VHF frequencies to 80
MHz are affected.
Question #9: What are the frequencies occupied by the lowest channels of
television in the United States? (Hint, channel two runs between 54 MHz and
60 MHz). Do these frequencies lie between 1.8 and 80 MHz?
Now think about those questions for a while.
These are just simple starter questions; it gets worse the deeper you dig.
Now go back to your room and shut the padded door 
73 from Rochester, NY
Jim AA2QA
Jim, to add a few to your list........
Question #10 Do TV Channels 2 through 5 use spectrum in this range?
Question #11 Do you know that even with Digital TV that broadcasters
will still have to broadcast on the old frequencies until about 80% of
the households in their class A & B coverage areas upgrade to digital?
This means that VHF over the air brodcast will likely go on well past
1996.
Question #12 Do you know that RC aircraft use spectrum in the 70 MHz
range for control?
Question #13 Did you know that there are literally millions of RC
flyers out ther and some of these aircraft tip the scales at over 30
pounds, are powered by actual tubojet engines and can approach 300 MPH?
Question #14 Do you really believe that the cutoff frequency will be
sharp enough to stop interference to at least the upper part of AM
broadcast and the lower part of FM broadcast?
73
George
K3UD