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 <[email protected]> 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: [email protected] [mailto:[email protected]] On > > > Behalf Of Scott Mace > > > Sent: Sunday, May 15, 2011 10:07 PM > > > To: [email protected] > > > 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 -- [email protected] > > > > To unsubscribe, go to > > > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > > > and follow the instructions there. > > > > > > > > > > > > > > _______________________________________________ > > > time-nuts mailing list -- [email protected] > > > To unsubscribe, go to > > > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > > and follow the instructions there. > > > > > > _______________________________________________ > > > time-nuts mailing list -- [email protected] > > > To unsubscribe, go to > > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > > and follow the instructions there. > > > > > > _______________________________________________ > > time-nuts mailing list -- [email protected] > > To unsubscribe, go to > > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > and follow the instructions there. > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
