[time-nuts] new GPSDO kit
saidjack at aol.com
Sat Apr 5 01:18:30 UTC 2014
Let me try to answer the questions.
This unit is placed to fill a need for lower cost plug-and-play units than what our Fury offers. The Fury desktop DOCXO sells for around $1700 if I am not mistaken, and literally 100's of them are sold every year. This is not trying to address a $50 hobbyist market; heck we pay about $50 just for the front and rear panels because we make them in the US in small qty instead of ordering 10,000 from China at $0.75 each.
There are other options at that price point on EBay, for example you can get a complete 58503A kit for $550 now which I consider one of the best units ever -way better than any Thunderbolt I have seen, and I have said so many times here in the past.
We however need to worry about paying salaries and the PL statements at the end of the year, so we have to price products at cost * x unfortunately.
The unit works well for typical lab applications, and if the loop time constants are increased a bit and the Unit is shielded from airflow, the ADEV is quite good, around xE-010 or better is possible. It's also easier to deploy than the Fury, no user-interaction is needed other than applying power and connecting the antenna.
This not being an oven as noted, it really is not designed for holdover. But how often does one see GPS holdover in a stationary lab application with uBlox GPS receivers? We have the Fury for that. The Phase noise and ADEV of the Fury are also significantly better of course..
Buying used equipment works really well to keep cost down, but for those that have to buy new with support, warranty, and a long life-cycle there are no other desktop GPSDO kits with complete accessories available in this price range that I am aware of. Of course if there are, I would like to hear about them..
Sent from my iPad
On Apr 4, 2014, at 17:45, paul swed <paulswedb at gmail.com> wrote:
> I mean no disrespect to anyone here. Jacksonlabs makes some very fine
> components. Brookes comment was spot on. What happens etc. I did run out to
> the site and take a quick read. The short piece I read did not have a lot
> of specifics or I simply missed them. It is low power and thats quite a
> plus, but has to also take into account how it behaves without GPS.
> Hopefully others will comment.
> So looking at the price I know that I have seen used Tbolts all over the
> place up to at least $350 or more. Same for the HPs and they have lots of
> miles on them.
> I suspect some comparison to those technologies would be helpful in
> appreciating whats being offered.
> Look at the fast turn around Said did. A time-nut says how about a discount
> and there you go a discount.
> On Fri, Apr 4, 2014 at 8:20 PM, Chris Albertson
> <albertson.chris at gmail.com>wrote:
>> Wow. Seriously I was just going to post about my $35 GPSDO. I've used
>> some discipline to not say "for just a little more I can get..." and gone
>> the lowest cost route at each decision point. Just to see what happens.
>> Price does not include GPS receiver, plug-in power cube and case and I'm
>> not shooting for really great spec's. My goal was lowest price possible.
>> The unit is based on the one posted here by Lars Walenius. I replaced his
>> $30 Arudino with a $4 part and added an LCD display.
>> It's not finished yet. I plan on changing out the LCD display to a $4
>> Nokia cell phone part that does 84x84 pixel graphics. I'd like to have the
>> GPSDO do its own primitive graphs and setup menus without need to be
>> connected to a computer.
>> No intent to compete with a commercial product. I'm not going to sell
>> them. But in time I'll document it.
>> Here is a photo <https://www.dropbox.com/s/bsksw9x51ydk6gi/gpsdo.jpg>
>> On Fri, Apr 4, 2014 at 3:39 PM, <SAIDJACK at aol.com> wrote:
>>> Hello everyone,
>>> sorry for the plug, but we just announced a new $568 complete GPSDO
>>> reference kit.
>>> This unit is a tiny desktop unit with 10m antenna, power supply, cables,
>>> CD, and other accessories. It is a low cost addition to our Fury GPSDO
>>> and contains a really good TCXO, a uBlox GPS receiver, and various power
>>> options. I believe this is the lowest-cost real GPSDO in mass production
>>> available on the market right now, and being a true GPSDO it has some
>>> good phase noise and stability specs.
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>> Chris Albertson
>> Redondo Beach, California
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