| |
PA2RHB > VLF 20.01.98 00:44l 39 Lines 1399 Bytes #-10398 (0) @ WW
BID : 320719PA2RHB
Read: GUEST
Subj: Band specifier "VLF"
Path: DB0ZKA<DB0KFB<DB0CZ<DB0LJ<DB0ZDF<DB0SRS<DB0SIF<DB0NHM<DB0ERF<DB0HSK<
PI8DRS<DB0PKE<DB0SM<PI8DAZ<PI8GCB<PI8WFL
Sent: 980119/2132Z @:PI8WFL.#NH1.NLD.EU #:48081 [Enkhuizen] $:320719PA2RHB
From: PA2RHB@PI8WFL.#NH1.NLD.EU
To : VLF@WW
Hello all,
I read the VLF topic with interest, but one thing nags me. Really the
frequency band between 30 and 300 kHz should be named not VLF, but LF.
We have the list:
3 - 30 kHz VLF band 4 100 to 10 km myriametric waves
30 - 300 kHz LF band 5 10 to 1 km kilometric waves
300 - 3000 kHz MF band 6 1000 to 100 m hectometric waves
3 - 30 MHz HF band 7 100 to 10 m decametric waves
30 - 300 MHz VHF band 8 10 to 1 m metric waves *)
300 - 3000 MHz UHF band 9 1 to 0.1 m decimetric waves
(...)
The Band Number is not often used by amateurs, but shows up often in ITU
Regulations, Recommendations, Footnotes etc.
For instance, "broadcasting in band 7" (almost always about congestion).
The "middle" frequency of band number X is 10 to the power of X. So, band
7 contains 10^7 Hz or 10 MHz, etc.
Expressions like "hectometric waves" are to be found in the French-like
languages (well, in translation, of course).
Now, to get an audible VLF signal out, that would be quite a challenge..!
You would not even need a license as such, because you could pick a spot
below 9 kHz. That way, you would not formally be operating a transmitter.
*) sorry, there are no Imperial or Whitworth waves...
73 - Ruud, PA2RHB @ PI8WFL
18 Jan 1998, 13:45 MET.
WinPack-TF V6.30!
Read previous mail | Read next mail
| |
