[time-nuts] Price of LTE Lite GPSDO vs Trimble Thunderbolt.

Pete Lancashire pete at petelancashire.com
Fri Oct 17 22:49:45 EDT 2014


I'm sorry for what I wrote

-pete bye ...

On Fri, Oct 17, 2014 at 7:46 PM, Pete Lancashire <pete at petelancashire.com>
wrote:

> No where did I mention comparing specifications.
>
> It was a statement of an individual Joe being able to get a GPDSO for a
> very reasonable amount.
>
>
> Just a usable GPDSO nothing else.
>
>
>
> On Fri, Oct 17, 2014 at 6:14 PM, Bob Camp <kb8tq at n1k.org> wrote:
>
>> Hi
>>
>> The question on all of these setups is very much - what do you need?
>>
>> The T-Bolt was designed to meet some very specific requirements. It’s got
>> an OCXO onboard because of that.
>>
>> A 48 hour battery backed Rb does something very different, it’s got
>> different costs associated with it.
>>
>> A modern / up to date TCXO based unit makes some compromises to trade off
>> against power and size.
>>
>> Depending on what your system needs are, each of the first two may
>> uniquely fill a bill that the others will not and can not. If you need to
>> run 120 days on battery, the third will win the contest easily. If you want
>> to run on something other than GPS, number 3 is your choice.
>>
>> Cost wise, it all depends on when you bought what. I have Rb’s that cost
>> less than $40 and T-Bolts that cost less than $100. You can still get
>> surplus T-Bolt like objects (OCXO based surplus GPSDO’s) for under $130. I
>> also have some stuff I’ve bought on eBay (and other surplus outlets) over
>> the years that turned out to be less than perfect. Depending on surplus
>> gear in a commercial system would be silly compared to using newly
>> manufactured parts. It all depends on what you need.
>>
>> Bob
>>
>> > On Oct 17, 2014, at 5:19 PM, paul swed <paulswedb at gmail.com> wrote:
>> >
>> > Don't want to hijack any discussion and am looking forward to the ebay
>> site
>> > and ordering. Whats amazing is the power spec in addition to other
>> specs. I
>> > rechecked the spec 1/16th watt at 3.3V. My RB in the basement draws 24
>> > watts just idling along and keeping two hefty SLA batteries charged for
>> a
>> > 48 hour run time if needed.
>> >
>> > I can clearly see the case of careful support system design such that a
>> > battery set can be charged and even in a power failure run several days
>> on
>> > a small battery.
>> > SLA 7 amp was something like 100 plus hours. Bert introduced me to some
>> of
>> > the Lithium battery technologies that can be had for reasonable cost and
>> > are small and dense.
>> >
>> > But that said really no need for a battery since restarts are fast...
>> > Lots to think about. Like LEDs drawing more power then the system and
>> > sloppy base power supplies wasting power.
>> > Regards
>> > Paul
>> > WB8TSL
>> >
>> > On Fri, Oct 17, 2014 at 4:53 PM, Pete Lancashire <
>> pete at petelancashire.com>
>> > wrote:
>> >
>> >> Sorry to create any  misunderstanding
>> >>
>> >> I was saying thanks to TVB/TAPR for all their effort, and Said/JLT for
>> >> doing what they did for the group
>> >>
>> >> I was in no way comparing the used Thunderbolts to the LTE Lite.
>> >>
>> >> -pete
>> >>
>> >> On Fri, Oct 17, 2014 at 1:13 PM, Jim Sanford <wb4gcs at wb4gcs.org>
>> wrote:
>> >>
>> >>> And, somehow I expect that my LTE-LITE will actually work, which my
>> >>> thunderbolt never did.  (Very noisy)  It continues to collect dust....
>> >>> On 10/17/2014 3:49 PM, Pete Lancashire wrote:
>> >>>
>> >>>> First three cheers to LTE for making these available.
>> >>>>
>> >>>> It reminds me when Motorola made a developers kit for the then
>> >>>> new 68HC11 MCU available for $68.11.
>> >>>>
>> >>>> I know of one design win they got that more then made of their
>> marketing
>> >>>> costs.
>> >>>>
>> >>>> Another that hit me is with inflation the LTE Lite is not much more
>> then
>> >>>> what many of us paid for our Thunderbolts.
>> >>>>
>> >>>> For those new to the list ...
>> >>>>
>> >>>> https://www.febo.com/pipermail/time-nuts/2008-May/031100.html
>> >>>>
>> >>>> http://www.leapsecond.com/pages/tapr-tbolt/
>> >>>>
>> >>>> In 2008, $124, the LTE Lite in 2014 $195.
>> >>>>
>> >>>> With 'real' inflation (not the 11% you get online) the $71
>> difference is
>> >>>> not much more.
>> >>>>
>> >>>> My two backup Thunderbolts cost me $145 each, just before they hit
>> $200
>> >>>> then became history.
>> >>>>
>> >>>> Again thanks to Said and JLT !!!!
>> >>>>
>> >>>> -pete
>> >>>> _______________________________________________
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>> >>>>
>> >>>
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