[time-nuts] Looking to find an antenna for a TrueTime XL-DC

Bob Camp kb8tq at n1k.org
Sat Aug 6 10:56:37 EDT 2016


Add in variables like supply voltage, tuning approach, signal levels, and gain ….

There are a lot of things you need to match up to get a downconverter going 
with an old style GPS. Once you do, you then likely have a unit that has GPS
epoch roll over issues. It may have other firmware quirks as well. 

None of that says “don’t do it”. It simply is a caution that this is a labor of love rather
than one getting a useful piece of gear up and going. You may ultimately have something
useful, the odds are it will have bugs …


> On Aug 6, 2016, at 9:44 AM, paul swed <paulswedb at gmail.com> wrote:
> Completely agree with the comment on working with other receivers.
> The down converters had to match the IF and there were at that time at
> least 2 IF frequencies 75 and 34 MHz as I recall.
> But that said no idea what they may cost and is it worth the gamble.
> Or reach out to meinberg and ask.
> Regards
> Paul
> On Sat, Aug 6, 2016 at 4:19 AM, Martin Burnicki <
> martin.burnicki at burnicki.net> wrote:
>> Alexander Pummer wrote:
>>> Meinberg https://www.meinbergglobal.com/ makes complete down and up
>>> converter for GPS remote antennas
>> That's true, but they have been designed for the frontend assembled in
>> Meinberg GPS receivers. I doubt they work with Truetime devices.
>> Martin (working @Meinberg)
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