Do you have a mask set on the signal level? I have two tbolts running that are completely surrounded by trees, and I was getting satellites popping in and out. I dropped the AMU to 0.0 and it is much more stable as to not dropping birds, although I have absolutley no idea what effect that might have had on the stability of the 10.0M reference. Also, a high elevation mask can do the same.
Any reflection/comment as to the effect of my doing the above is appreciated. Brent On Mon, May 16, 2011 at 8:49 AM, paul swed <paulsw...@gmail.com> wrote: > ok > Indeed now that its morning and different glasses I would have seen that. > There you go dangerous at 11pm > > On Sun, May 15, 2011 at 11:39 PM, WB6BNQ <wb6...@cox.net> wrote: > >> Paul, >> >> If you had read more carefully what I wrote you would see that I said >> better coax >> "WHEN HE PUTS IT OUTSIDE." >> >> thank you, >> >> Bill....WB6BNQ >> >> >> paul swed wrote: >> >> > 12' of rg 58 should be fine and 5-3.7V should work >> > In the thread it says this is using a window. Boy some windows actually >> can >> > block the signal especially if there is a screen. >> > Some one else said you need a view to the south. Thats a fact from ma. at >> > least interesting to watch the sat tracks. I would not have believed they >> > travel the way they do. >> > Strongly believe you need to see clear sky. Signal to noise ratio. >> > Lastly its late forgive typos. >> > >> > On Sun, May 15, 2011 at 11:01 PM, WB6BNQ <wb6...@cox.net> wrote: >> > >> > > Hi Eugene, >> > > >> > > I will presume from your call sign that you are North of the equator. >> Thus >> > > you >> > > would want to have the best visibility (i.e., clear) pointing to the >> South. >> > > The >> > > fact that you are at the window, on the inside, does limit the amount >> of >> > > sky you >> > > can see. Just getting it on the roof will make a reasonable >> difference. >> > > Getting >> > > above, or reasonably at the same height as, the trees should be the >> goal. >> > > >> > > I would use something better then RG-58 when you put it outside. Even >> RG-6 >> > > with >> > > quality connectors, the good type used by the cable TV companies, is >> better >> > > than >> > > RG-58 at the GPS frequency. >> > > >> > > As for increasing the voltage to the antenna, I would definitely be >> careful >> > > there. No doubt a regulator of some sort is used up at the antenna and >> > > raising >> > > the voltage would just make that regulator work harder. If the voltage >> is >> > > well >> > > lower than the specified 5 volts, I would investigate why that is. >> Could >> > > be your >> > > meter is off ? The only reason for raising the voltage a TAD would be >> if >> > > you had >> > > a very long run (like over 200 feet) to compensate for I*R losses if >> they >> > > are >> > > significant. However, such a long run would be counterproductive due >> to >> > > line >> > > loss at the RF frequency of the GPS. >> > > >> > > 73....Bill....WB6BNQ >> > > >> > > W2HX wrote: >> > > >> > > > Length is about 12', type is RG-58, antenna is at my window pointing >> to a >> > > > some blue sky (no splitter). I think from the emails from the folks >> on >> > > the >> > > > list, before anything, I need to find a better location for the >> antenna. >> > > > Thanks for the reply >> > > > >> > > > 73 Eugene W2HX >> > > > >> > > > -----Original Message----- >> > > > From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] >> On >> > > > Behalf Of Scott Mace >> > > > Sent: Sunday, May 15, 2011 10:07 PM >> > > > To: time-nuts@febo.com >> > > > Subject: Re: [time-nuts] basic question on GPS satellites >> > > > >> > > > What type of coax are you using and how long is the run? >> > > > >> > > > I live in the woods and my antenna is partially blocked by >> > > > trees to the north and east and have never had problems. I have >> about >> > > > 130ft of LMR-400 between my antenna and splitter. >> > > > >> > > > Scott >> > > > >> > > > On 05/15/2011 05:30 PM, W2HX wrote: >> > > > > Hi there. Recently acquired my first GPSDO. It is a datum 9390 >> (thank >> > > you, >> > > > > Norm!). One aspect of its behavior seems strange to me. Within a >> > > matter >> > > > of >> > > > > a few minutes, it seems that satellites are appearing and >> disappearing. >> > > > Are >> > > > > the satellites moving that quickly? I might go from 1SV to 3SV or >> 4SV >> > > and >> > > > > then a minute later go to 1SV or none. The antenna isn't moving >> and >> > > the >> > > > > trees aren't moving too much today. I have not done anything with >> > > regard >> > > > to >> > > > > setting minimum elevation or any other parameters. I did go >> through >> > > the >> > > > > COLD RESTART procedure to clear out everything and let it start >> from >> > > > > scratch. >> > > > > >> > > > > >> > > > > >> > > > > Do other GPSDO users experience something like this? >> > > > > >> > > > > 73 Eugene W2HX >> > > > > >> > > > > >> > > > > >> > > > > _______________________________________________ >> > > > > time-nuts mailing list -- time-nuts@febo.com >> > > > > To unsubscribe, go to >> > > > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> > > > > and follow the instructions there. >> > > > > >> > > > > >> > > > >> > > > _______________________________________________ >> > > > time-nuts mailing list -- time-nuts@febo.com >> > > > To unsubscribe, go to >> > > > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> > > > and follow the instructions there. >> > > > >> > > > _______________________________________________ >> > > > time-nuts mailing list -- time-nuts@febo.com >> > > > To unsubscribe, go to >> > > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> > > > and follow the instructions there. >> > > >> > > >> > > _______________________________________________ >> > > time-nuts mailing list -- time-nuts@febo.com >> > > To unsubscribe, go to >> > > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> > > and follow the instructions there. >> > > >> > _______________________________________________ >> > time-nuts mailing list -- time-nuts@febo.com >> > To unsubscribe, go to >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> > and follow the instructions there. >> >> >> _______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. >> > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
