[time-nuts] No GPS satellites

[Michael Perrett]

Since your antennas have a lot of gain I assume they are active and require
a DC voltage to the LNA. Does the XL-DC provide that voltage (sometime you
have to select active or passive antenna)?
Michael / K7HIL

On Wed, Feb 25, 2015 at 12:35 PM, Doug Ronald <doug at dougronald.com> wrote:

> I'm hoping someone can shed some light on my problem receiving any GPS
> satellites.
>
> I have two TrueTime GPS Time & Frequency Receivers, Model XL-DC. One has a
> regular crystal oscillator, and the other one has a rubidium oscillator. I
> have two outdoor GPS antennas with internal LNAs, one a 28 dB gain unit,
> and the other a 40 dB unit. When either antenna is connected to my Lucent
> KS-24361, it locks right up and tracks up to 8 satellites. When either of
> the antennas is connected to the XL-DCs, they just sit there and status :
> "Looking for GPS satellites".
>
> In the Alarm menu of either XL-DC there is an alarm for Antenna. Both
> units say "OK" and if I disconnect the antenna they both logically say
> "Open". So, what is the problem? I can't believe I don't have enough
> signal, after the Lucent locks-up right away. Is it possible the TrueTime
> sanctioned antenna has a down converter in it, perhaps placing the GPS
> signal from L-band to some lower frequency? I would appreciate any info the
> group might have...
>
> -Doug Ronald
> W6DSR
>
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