archiv~1.txt: SETI Water Hole

SETI Water Hole

SETI-Hispano ( carloscp@mx3.redestb.es )
Thu, 25 Mar 1999 02:41:18 +0100

Hi all!

I have read that the "Water Hole" is an extremely narrow range of radio
frequencies between the hydrogen line of 1420 megahertz and the first
hydroxyl line of 1662 megahertz, but The Committee on Radio Astronomy
Frequencies (CRAF) showed 4 Hydroxyl lines.

Frequency minimum bandwidth
...
Deuterium (DI) 327.384 MHz 327.0 - 327.7 MHz
Hydrogen (HI) 1420.406 MHz 1370.0 - 1427.0 MHz
Hydroxyl radical (OH) 1612.231 MHz 1606.8 - 1613.8 MHz
Hydroxyl radical (OH) 1665.402 MHz 1659.8 - 1667.1 MHz
Hydroxyl radical (OH) 1667.359 MHz 1661.8 - 1669.0 MHz
Hydroxyl radical (OH) 1720.530 MHz 1714.8 - 1722.2 MHz
Methyladyne (CH) ...
...

Can anybody say me what is the real range that owns the "Water Hole"?

Thankyou from Spain. ;)