[time-nuts] GPSDO energy consumption question(s)
kb8tq at n1k.org
Fri Aug 28 20:29:15 EDT 2015
The GPSTM (and similar) have at least one other “fatal flaw” compared to the TBolt -
You can not tune the filter (control loop) parameters. That locks you in to the “big hump”
Trimble ADEV that their default settings create.
If I was stuck on a solar battery stack, I think I’d prefer the GPSTM’s wide range switcher
over the linear regulators that are needed to make a TBolt run nicely :)
There is always the possibility that another “wave” of TBolts might show up. I doubt they
will drop back to the $120 range again. It looks like something around 2X to 3X that is now the
going rate. Who knows …..
> On Aug 28, 2015, at 7:04 PM, skipp Isaham via time-nuts <time-nuts at febo.com> wrote:
> Greetings Time Nuts Group Members
> A few quick questions regarding the Trimble Thunderbolt and similar GPSDO
> unit power consumption.
> I've obtained and currently use the Thunderbolt GPSDO having the case top
> power connector requiring a triple output supply. Being very happy with the
> operation and performance of the mentioned, I'd like to find one or two more.
> However, the online auction prices for the Thunderbolt GPSDO model I like have
> risen quite a bit.
> As what I thought might be a possible price and availability alternative, started
> evaluating the Nortel NTBW50AA GPSTM GPS Timing Module.
> The Nortel NTBW50AA GPSTM GPS Timing Module compared to the Thunderbolt
> seems to be a bit of an "energy hog". I don't yet have enough information
> to do a total comparison of other available GPSDO options.
> Would any of you be able to provide a quick relative comparison about relatively
> common (surplus) GPSDO and similar type/function units? their real world
> energy consumption?
> The Nortel NTBW50AA GPSTM is nice but I'm not sure we'd want to park one
> at a solar only location that didn't need what appears to be a mini space
> Thank you in advance for your replies...
> skipp025 at yahoo.com
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.
More information about the time-nuts