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Group Information

  • Members: 584
  • Category: Weather
  • Founded: Dec 19, 2003
  • Language: English
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Activity within 7 days:

54 New Messages - New Questions

Description

This is the official group is for subscribers of the Group for Earth Observation (GEO). Membership of the group is limited to those who want to exchange information relating to either GEO or earth observation satellites. Postings may be moderated. Whilst you may find out information about GEO on other groups, this group is always monitored by the GEO steering group, and they will probably reply to your questions. For specific/personal issues please mail the steering members directly. Contact information is on the GEO web site. All list and GEO Membership enquiries to members@geo-web.org.uk

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Re: GEO preamp - variable/reduced gain?
Hi Barry, A point of consideration. If you a use antenna with a impedance (at 137.5 Mhz) that have NOT the same impedance as the used coaxcable impedance and
Posted - Wed Nov 25, 2009 12:45 pm
 Ruud Jansen
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Re: GEO preamp - variable/reduced gain?
Barry my dipoles are taken from Jerrys article They are 980mm overall length. with a gap of 15mm in the centres The dipoles should be spaced 550mm centre to
Posted - Wed Nov 25, 2009 10:33 am
 Simon L
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Re: GEO preamp - variable/reduced gain?
Hi Jerry, In the article published in GEO Quarterly #18, June 2008, I covered a lot of the interference problems discussed in this thread. In particular, I
Posted - Wed Nov 25, 2009 10:25 am
 Alan Sewards
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Re: GEO preamp - variable/reduced gain?
... I wrote up my findings here: http://www.satsignal.eu/wxsat/pagerproblems.htm "Ameliorate" rather than "eliminate" is the term I would use. 73, David --
Posted - Wed Nov 25, 2009 9:56 am
 David J Taylor
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Re: GEO preamp - variable/reduced gain?
... Hi david I guess I have stumbled into a trap. I thought a person couldnt eliminate pager interference when the pager transmitter is within 10 miles (line
Posted - Wed Nov 25, 2009 9:52 am
 jerry@...
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Message History

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2009 76 340 140 77 82 125 153 161 175 168 180
2008 81 243 177 123 99 209 153 120 134 81 81 52
2007 167 132 284 100 195 103 124 159 58 135 57 137
2006 144 171 125 132 159 163 145 231 116 241 150 75
2005 206 176 101 151 344 196 167 101 140 119 151 150
2004 5 11 6 8 26 92 82 153 108 112 73 145
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