[time-nuts] Chinese GPSDOs

[Tobias Pluess]

I wonder why the only (or at least, most of the) GPSDOs one can find on
eBay are from China. Is there a reason for that?
I would like to buy used GPSDOs and OCXOs from other sources because the
stuff from China is often of doubtful pedigree and I would never 100% trust
one of those. They often look like they were treated very badly and I have
the impression that it is often unqualified personnel who pulls out the
GPSDOs from whatever equipment they have there.
The same is for Rb standards. I would already have one, but I can only find
Chinese sources, so I better keep my money than I buy a Rb standard from
which I don't know whether it was treated properly when removed from some
electronic equipment.

Having said that I can add that I do have one of those dubious GPSDOs from
there; however not the particular model you mentioned. The GPSDO works but
I don't know whether it can be trusted. I once compared it to a Trimble
Thunderbolt, but I am not sure whether it was the Trimble which was
unstable or my own unit. It looks like the seller has made some
modifications to it and I don't know why. Also, there is no measurement
data available.


Tobias
HB9FSX


On Fri, Apr 17, 2020 at 4:05 PM Steve - Home <steve-krull at cox.net> wrote:

> There are some Chinese GPSDOs currently on eBay, containing a Symmetricom
> 10MHz oscillator and a Furuno GT-8031 GPS receiver. Has anyone had any
> experience with them? It’s hard to tell from the pictures what the power
> requirements are. I know the GT-8031 is an older 8-channel receiver. I was
> considering one for a portable 10MHz reference. Anyone checked these out
> yet?
>
> Steve
> WB0DBS
>
>
>
>
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