[time-nuts] Fwd: Price of LTE Lite GPSDO vs Trimble Thunderbolt.
SAIDJACK at aol.com
SAIDJACK at aol.com
Fri Oct 17 22:23:03 EDT 2014
Bob,
"Depending on surplus gear in a commercial system would be silly compared
to using newly manufactured parts."
You nailed it Bob, we wouldn't compare an old 2004 Porsche Cayenne one can
now get for $5K with a new Tata car costing $6K either..
Both get you there for almost the same price even though the Porsche is
about 20x more expensive new, but you can't and shouldn't compare the
performance of the two. They were designed for two completely different
applications, and there is a reason why the Porsche (Thunderbolt) new is
significantly more expensive - it has significantly higher performance.
Its a silly comparison.
bye,
Said
Reply-To: Discussion of precise time and frequency measurement
<_time-nuts at febo.com_ (mailto:time-nuts at febo.com) >
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_
(mailto: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_ (mailto: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_
(mailto: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
_______________________________________________
time-nuts mailing list -- _time-nuts at febo.com_ (mailto:time-nuts at febo.com)
To unsubscribe, go to https://www.febo.com/cgi-bin/
mailman/listinfo/time-nuts
and follow the instructions there.
---
This email is free from viruses and malware because avast! Antivirus
protection is active.
_http://www.avast.com_ (http://www.avast.com/)
_______________________________________________
time-nuts mailing list -- _time-nuts at febo.com_ (mailto:time-nuts at febo.com)
To unsubscribe, go to https://www.febo.com/cgi-bin/
mailman/listinfo/time-nuts
and follow the instructions there.
_______________________________________________
time-nuts mailing list -- _time-nuts at febo.com_ (mailto:time-nuts at febo.com)
To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
_______________________________________________
time-nuts mailing list -- _time-nuts at febo.com_ (mailto:time-nuts at febo.com)
To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
_______________________________________________
time-nuts mailing list -- _time-nuts at febo.com_ (mailto: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
mailing list