[time-nuts] Difference in GPS antennas

[Chuck Harris]

Lux, Jim (337C) wrote:
> 
> 
> On 8/15/09 8:27 AM, "Magnus Danielson" <magnus at rubidium.dyndns.org> wrote:
> 
> 
>>> If you're near a harbor with fishing boats, you'll see plenty of quad
>>> helices about a half a meter in overall height, used for VHF Weather
>>> satellite reception.  They're also used on spacecraft (Mars Science Lander,
>>> Mars Reconnaissance Orbiter, and Phoenix all have UHF quad helix antennas, I
>>> think, for about 400 MHz)
>> Not used by the fishing vesels near me...
> 
> Really?  Practically all the fishing boats (mostly squid) boats going out
> from Ventura Harbor (in Southern California) have big ol' quad helix
> antennas up on the cross bar (as well as the usual HF SSB and VHF whips and
> the radar).  Maybe it's a regional preference thing (or folks are going to
> the 1.6 GHz band or something).

Haven't all of the VHF weather satellites been decommissioned?

-Chuck Harris