[FLWSS] Making 10 GHz contacts

[GRAHAM HULS]

with a handheld gps over 30m on the average closer to 100m,  you are fooling yourself    ...why ?  it has no wave processor. Like anything else you get what you pay for , your getting 1 meter because that's what the salesman at walmart told you , enough of this  I 'm talking to a wall.   ke4wbo > From: k4rsv at bellsouth.net> To: flwss at flwss.net> Date: Sat, 19 Jan 2008 09:55:27 -0800> Subject: [FLWSS] Making 10 GHz contacts> > Things are filtering down now and I think I now understand some of the pros> and cons of the different ways to express a location.> > 1) Maidenhead, unless carried out to 8 places or great distances, is the> least accurate.> > 2) Hddd*mm'ss.s format, with WAAS active, is accurate to <10 ft. Simply, the> longer the data string is, the more accurate the data. Even without WAAS and> 5 or more satellites, accuracies of <30 ft. are common. That's very> adequate. > > 3) The other two common long/lat formats can give similar results but the> issue is that we all use the same or recognize and convert formats given to> us by another party. It's not necessary to decide on a standard today, it's> just knowing the difference for now. It could cost you a contact.> > *****> > I'm not the expert, but I've learned a thing or two about making contacts on> 10 GHz.> > 1) The very first thing is that both stations need to be on the same> FREQUENCY! Do not go to step 2 unless step 1 is satisfied. Then the rest is> easy. If step 1 can't be achieved, go to step 2 and hope conditions are good> enough for the proverbial "Blind Squirrel" to find a nut.> > 2) Point the dish square with the horizon. Simple.> > 3) The station[A] that has the best ability to accurately point at the other> station[B] should initiate the contact. Transmit a side tone or switch to> FM, CW, or RTTY mode to produce a steady carrier. Many contacts can be> continued on FM and solve some stability problems.> > 4) Station[B] sweeps and tweaks dish. If you have to TUNE and sweep, it> becomes even more important that station[B] can also point accurately so> that the only variable left is TUNING. It becomes 4 times harder if TUNING> and sweeping are performed at the same time.> > 5) If contact is not made, only station[A] should make minor dish changes> and retransmit for station[B] to do step 4 again.> > 6) If all fails, station[B] can assume the initiators position and try> again. This could help define possible equipment problems.> > I wrote this because the weather sucks today and others might be waiting for> tomorrow also. Good luck.> > At our next group meeting, we need to really address the frequency issue.> I'm taking another look at the TCXOs that Chuck introduced that could still> be the answer. I'm thinking about gluing the harmonic generating IC inside> a DDS LNB waveguide to bump the signal level up to a more useful level. > > George K4RSV> > > > > > _______________________________________________> Website http://www.flwss.net> > FLWSS mailing list> FLWSS at flwss.net> http://flwss.net/mailman/listinfo/flwss_flwss.net
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