[time-nuts] Truetime XL-DC help
Don Wisdom
donw at engineeringinc.com
Sat Jan 12 21:09:31 EST 2008
Bruce,
The Andrew antenna uses a +5v DC Bias The trutime is kicking out +5vDC
between the center conductor & the cable shield. It has the best horizon to
horizon view its going to get where I live (mobile home park) It is
mounted outside on its bracket with the dome above the metal roof. Any
other suggstions? I checked the internal battery voltage as well its
normal.
--Don
On 1/12/08 6:45 PM, "Bruce Lane" <kyrrin at bluefeathertech.com> wrote:
> Good eve,
>
> One common problem is that the DC bias produced by your clock and that
> required by the antenna may not be matched. Look up the antenna specs, and see
> what it calls for in terms of operating voltage.
>
> Next, whip out your multimeter and see what the XL-DC is putting out on the
> center conductor of the antenna cable. If it's more than the Andrew antenna
> calls for, you're going to need a DC block/injector (also known as a Bias-T)
> to put the proper voltage up the coax.
>
> I'm guessing that your antenna has as clear a horizon-to-horizon view as you
> can give it?
>
> Happy tweaking.
>
> *********** REPLY SEPARATOR ***********
>
> On 12-Jan-08 at 17:52 Don Wisdom wrote:
>
>> Hi All,
>> I'm fairly new here and could use some help.
>>
>>
>> I ended up getting a XL-DC from one of my friends. It was removed in
>> working condition from a local utility. Its the GPS based model. Anyways
>> I
>> am having a very hard time trying to get the unit to lock. It only seems
>> to ever be able to track Sat #26. I have gone thru all the lists and made
>> sure every satellite in the list is enabled and soforth. Still no luck.
>> I am using a Andrews GPS antenna that a friend who is a cell site tech got
>> me new in the box. Anyone with experience with the Truetime XL-DC stuff
>> that would be willing to lend a hand please email me.
>>
>>
>> Thanks
>> --Don
>>
>>
>>
>>
>>
>>
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>
>
> -=-=-=-=-=-=-=-=-=-=-=-
> Bruce Lane, Owner & Head Hardware Heavy,
> Blue Feather Technologies -- http://www.bluefeathertech.com
> kyrrin (at) bluefeathertech do/t c=o=m
> "If Salvador Dali had owned a computer, would it have been equipped with
> surreal ports?"
>
>
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