Hello everyone, I'm new to this list but also I'm new to all of this GPS
timing world, all do used GPS before but as a regular GPS user.
I bought on Amazon a couple of USB GPS:
U-BLOX UB-6010
GlobalSat BU-353-S4
I also have registered version of NMEATime version 2.0.25 running on
Windows 10
Seems to me that both GPS receivers and Ligado's transmitters are going to
need the
"brick-wall" filters. I wonder how lossy such filters will be when sized
to fit in handheld
GPS receivers, smart phones, and (especially) GPS watches.
On the other hand, it may be that many time-nuts will not
On 4/17/20 2:04 PM, Taka Kamiya via time-nuts wrote:
The original article said 9.8dBW. I guess 10 WATTS? Kind of unusual unit
expression
dBW it is. It's what's used in transmitter license filings, since most
transmitters are Watts, kilowatts, or megawatts. Very few licenses
issued for
And the competition has/is putting up a gazillion cubesats to screw up
another of my little pleasures, astronomy. Bah. It's enough to make you
want to go out and stand right next to somebody.
Don
On 2020-04-17 14:37, Scott McGrath wrote:
That was +9.8 on the terrrestrial microcell
Ohio eBay reseller selling items from an old television/ recording station
estate.
He has dropped the initial price for this GPS Master Clock, and is accepting
offers.
ESE ES-185A GPS Master Clock (used), eBay auction number: 264676519970
The ESE ES-185A Master Clock is an older model. The
Kevin,
Those Masterclock units sold out yesterday evening. The HS units had an OCXO.
I have no idea what the seller’s inclusion of “K60” in auction referenced.
Freescale‘s Kinetics K60 ARM processor is used in some NTP appliances.
The original article said 9.8dBW. I guess 10 WATTS? Kind of unusual unit
expression
---
(Mr.) Taka Kamiya
KB4EMF / ex JF2DKG
On Friday, April 17, 2020, 4:38:36 PM EDT, Scott McGrath
wrote:
That was +9.8 on the terrrestrial microcell
d...@montana.com said:
> It's all about imaginary brick wall bandpass filters.
You mean the ones that magically appear in all the installed gear?
When the FCC allocates spectrum, do they say anything about how long that slot
is good for? I'm interested in both formal and informal
That was +9.8 on the terrrestrial microcell transmitters,
Yes this seems to have been sold with the assurance that the magic brickwall
filters with 100db/octave slope will be included in every one.
But the asian manufacturer of said devices will neglect to include them and
juice the power
All three seam to be Chinese customer specific devices with focus on time. I
bought three of the Trimble units we call them Tbolt 2 because of design
similarities. On LH you will notice one thing like the original Tbolt it shows
frequency jumps of 1 E -10 but also once every hour it does a
Hi
Was that +9.8 or -98 dbm ? :)
At -98 they probably *could* coexist with GPS. Not real clear how well there
system would work at that level though.
Bob
> On Apr 17, 2020, at 1:37 PM, Scott McGrath wrote:
>
> Supposedly lowering Tx power on terrestrial network from +23 DBm to +9.8 DBm
>
It's all about imaginary brick wall bandpass filters.
On 2020-04-17 11:37, Scott McGrath wrote:
Supposedly lowering Tx power on terrestrial network from +23 DBm to
+9.8 DBm will make everything better. Ajit Pai is listening only to
carriers and ignoring DoD who is stating it will
Supposedly lowering Tx power on terrestrial network from +23 DBm to +9.8 DBm
will make everything better. Ajit Pai is listening only to carriers and
ignoring DoD who is stating it will significantly degrade and/or make useless
the GPS system.
Not to mention ADS-B which was installed at
On Freitag, 17. April 2020 16:04:15 CEST Steve - Home 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
>
Hi
GPSDO’s come from China for a very simple reason:
All the world’s scrap gear is sent to China for “reclamation”. It’s just
another element in the great flow of material being recycled. For a
variety of reasons China is the destination of choice for electronics
scrap.
Like it or not,
Leo Bodnar (Great Britain) makes some nice GPSDO devices for reasonable
prices, albeit TXCO.
http://www.leobodnar.com/shop/index.php?main_page=product_info=107_id=234
On Fri, Apr 17, 2020 at 10:53 AM Tobias Pluess wrote:
> I wonder why the only (or at least, most of the) GPSDOs one can find on
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
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
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