Hi Giuseppe,
Welcome to the group.
If you are already happy constructing equipment and have basic test gear
('scope, DMM) and a small budget, I'd suggest a timing GPS as a starting point.
While a Thunderbolt will give most of what you want, it is more expensive. A
Timing version or Motorola's Oncore <(ebay item 300355981024 from flukel for
instance) will give you an accurate 1 pulse per second output (you also need a
power supply antenna and a PC). This and a 'scope will allow you to calibrate
other instruments and a oven controlled crystal oscillator. A GPS based
solution (including Thunderbolt) will give you good confidence of accuracy.
Just buying a surplus Rubidium could result in you adjusting all your
instruments to the wrong frequency! Like many of these decisions, it's a
balance between time and money, with a lesser input from your capabilities and
existing equipment.
Robert G8RPI.
--- On Mon, 28/12/09, Giuseppe Marullo <[email protected]> wrote:
From: Giuseppe Marullo <[email protected]>
Subject: Re: [time-nuts] Timenoob - Cheap and simple 10MHz reference
To: "Discussion of precise time and frequency measurement" <[email protected]>
Date: Monday, 28 December, 2009, 0:56
Thanks a lot to all for your quick answer.
Rubinium should be good for my needs, but buying it surplus makes me think I
could get something very used (and abused) and it does not have the self
correcting thing thunderbolt has.
GPSDO gives me also the time, maybe with a supercool LCD display.
> A Thunderbolt needs a triple supply (+12, -12, and +5) to operate. It also
> needs a GPS antenna of some sort.
Do you know exactly the power requirement? On Ebay I read 15W then few mA on
each branch (board only). Something is not clear to me.
The dark side of the noon already embraced I have....
Giuseppe
PS: I am experiencing mail problems for the first time in many years, please
anyone willing to contact me directly do cc copy also this other email address:
[email protected] while my ISP gathers back all the bits they lost (2
days of emails vanished from my IMAP account under my eyes, literally)
_______________________________________________
time-nuts mailing list -- [email protected]
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
_______________________________________________
time-nuts mailing list -- [email protected]
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
