I just went on ebay. I got one of the 8 port units with 5V antenna
power supply and 11 db amp, there is still one left $175.00
https://www.ebay.com/itm/GPS-SOURCE-S18-A11-P110-5-GPS-1x8-WAY-SPLITTER-DEVICE-LOOK-REF-233G/193397441449?hash=item2d0762c3a9:g:PQIAAOSw0eNdDSLi
Here it is in the
Hi
With a setup using a (bunch of) broad band splitter(s), you have only one amp.
Whatever that
amp needs / does can easily be dealt with. Have a 5V antenna (or 3.3V …) and a
12V amp?
That’s easier to work on with only one amp. Need to allow the magic new band
that just appeared?
Just change
On 4/30/2020 10:39 AM, Bob kb8tq wrote:
At 1.5 GHz something like a 50 to 100 pf NPO is probably the best
pick for a blocking cap.
Why? It does a fine job at the intended frequency. It acts as a high pass
down lower where lightning energy is a bit higher ….
Hi Bob and all,
You are 100%
I'll second this thought.
I've got one of the symmetricom-branded distribution amplifiers in use here
and it's worked like a charm. Unfortunately it only works with GPS L1.
GALILEO seems to be at least mostly in it's passband, GLONASS is not.
As the bands I've needed have started to increase,
Hello All,
FWIW, I've been using Model Number 2401IFD from Channel Master (power
divider) for quite some time - works good for me.
I bought the one I have from Halted here in the Bay Area when they were
still open - didn't spend more than $10 on it if memory serves
me.
Regards,
John W.
AJ6BC
Hi
The original splitters mentioned most certainly do *NOT* short the DC to
ground.
I have used those splitters for decades to power GPS gear. We have used them
in production for runs of thousands of parts ….
Before anybody goes off and spends $1,000 on a splitter, think very hard about
what
Most of the regular splitters first mentioned are basically transformers
with one side if each winding connected to the case ground so they don’t
work because they short out the 5 VDC on the receiver’s antenna coax. You
have to be aware of the D.C. voltage to power the antenna plus have fake
I was lucky. I was looking for a GPS splitter a few months ago. Since I
wasn't in a big hurry I had the luxury of time to hunt. I picked up a
GPS Networking LNFA1X4-N for under $50. File that success under even a
blind squirrel sometimes finds an acorn. It is an active splitter that
provides
Frank (et.al.),
I've been very happy with my 8-port GPS Networking brand unit. It's
amplified so you don't incur splitting loss, it supplies 5V to the antenna
from an external DC source while blocking DC from the individual units (but
puts a 200 ohm load on each port so the receivers don't think
This InStock Wireless 4-Way splitter is a *passive* device, meaning no
amplification is included. The headline spec of "Insertion Loss 0.4 dB
typical" may be true but does not tell the whole story. Below that spec,
is the column heading of "Insertion Loss Above 6.02 dB" explaining that
each
I use splitters made for satellite TV with good results, I think. They
have response 5 MHz to >2 GHz and pass DC from any of the outputs to the
input, so any or all GPS receivers can feed the antenna. Some cabling
can be done with F connectors, or I add adapters as necessary (F to BNC
I use splitters for broadcast satellite stuffs all the time. My preference is
for splitters that have diodes so that all receivers can provide LNB power and
at the same time not back-feed any of the other receivers. That way, if any of
the receivers fails, any of the remaining receivers can
On 04/30/20 17:00, time-nuts-requ...@lists.febo.com wrote:
Re: GPS antenna splitter recommendation? (John Ackermann N8UR)
Usually a lurker here, but a couple of points. The best splitters are
those designed for the task, such as the HP or symmetricom 4 way
boxes seen from time to time on Ebay,
So, being a heartless butcher I opened up one of the HP 8-port GPS
splitters (forget the number) and removed the sawtooth filters so the
unit would pass both L1 and L2.
I found that to bridge the filter pads even the smallest cap I had (I
think 7pf) caused problems. I ended up making "gimmick"
Hi
At 1.5 GHz something like a 50 to 100 pf NPO is probably the best
pick for a blocking cap.
Why? It does a fine job at the intended frequency. It acts as a high pass
down lower where lightning energy is a bit higher ….
Bob
> On Apr 30, 2020, at 9:25 AM, Ben Hall wrote:
>
> On 4/30/2020
On 4/30/2020 7:33 AM, Bob kb8tq wrote:
Pretty much all the Mini Circuits splitters will pass DC.
Hi Bob and all,
That's absolutely correct. Something you might consider is what I did -
I got a pair of Mini-Circuits ZC6PD-1900W's cheap on the e-place.
Frequency-wise and loss-wise, not
nnell
> Sent: Wednesday, April 29, 2020 19:18
> To: time-nuts@lists.febo.com
> Subject: [time-nuts] GPS antenna splitter recommendation?
>
> I'm looking for a splitter to allow three or four GPSDO's to share my
> roof-mounted Lucent PCTEL KS24019L112C 26db GPS twist antenna.
>
&g
There is a Greek ham who sells a nice, very small, 4 way splitter with amp on
eBay. Sorry, no URL handy. It works well, but is L1 only, if that matters.
It costs a lot more than a Mini-circuits splitter, but a lot less than a "real"
GPS one.
John
On Apr 30, 2020, 3:16 AM, at 3:16 AM, Bob
.
https://www.instockwireless.com/gps-splitter-4way-SMA-gps410.htm
Chris Burford
-Original Message-
From: time-nuts On Behalf Of Frank
O'Donnell
Sent: Wednesday, April 29, 2020 19:18
To: time-nuts@lists.febo.com
Subject: [time-nuts] GPS antenna splitter recommendation?
I'm looking
Frank, you are looking for something like ebay item 181914486443.
But it's not cheap...
Regards
Bll NL7F
Frank,
Yes! Passive splitters are /not/ what you want. Units like the one Bill
mentioned have an amplifier built in, powered by one of the active GPS
devices
Am 30.04.20 um 03:01 schrieb Bob kb8tq:
Here’s a few:
... lots of ebay offers snipped
The problem is, they will do their Job at RF, but the GPS receiver
usually has to feed the antenna pre-amplifier with DC through the cable.
The 4 RX candidates should not have to fight for the right / duty
Hi
Again, that’s just the candidates pulled out of the first dozen.
Three port splitters (in general) don’t exist. At least not on the “low cost”
end
of things. You either use a 4 or a set of three 2 ports ( to make a 4 port).
Each time you split 2 ways, you “loose” 3 db ( equal power into
Having more ports than you need will incur some extra loss, since the
signal power has to be divvied up (usually equally) between them all. On
the other hand, there's a pretty good chance that you'll want another
port or more in the future - especially in time-nuts type pursuits, so
it's good
Frank, you are looking for something like ebay item 181914486443.
But it's not cheap...
Regards
Bll NL7F
On Wed, 29 Apr 2020 19:06:35 -0700, Frank O'Donnell wrote:
>On 4/29/20 6:01 PM, Bob kb8tq wrote:
>> HereGs a few:
>Bob, thanks very much for the suggestions.
>Five of the seven splitters
0 10:06 PM
To: time-nuts@lists.febo.com
Subject: Re: [time-nuts] GPS antenna splitter recommendation?
On 4/29/20 6:01 PM, Bob kb8tq wrote:
> Here’s a few:
Bob, thanks very much for the suggestions.
Five of the seven splitters in your list appear to offer a total of two
output ports. Wha
Are you splitting power OUT OF GPSDO or are you splitting antenna into
individual GPSDO?
Most, if not all GPSDO outputs power supply source to the antenna via the same
connector RF signal comes in. Simple splitters may or may not work. There are
GPS antenna splitters made for that.
On 4/29/20 6:01 PM, Bob kb8tq wrote:
Here’s a few:
Bob, thanks very much for the suggestions.
Five of the seven splitters in your list appear to offer a total of two
output ports. What I'm looking for is one that will accommodate
(specifically) three or four ports.
Of the remaining two on
Hi
Here’s a few:
I'm looking for a splitter to allow three or four GPSDO's to share my
roof-mounted Lucent PCTEL KS24019L112C 26db GPS twist antenna.
I understand from scanning past threads that inexpensive splitters by
companies like Mini-Circuits often turn up on eBay, but I'm having
trouble narrowing down
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