I have that same board and I am powering it from a 30VDC unregulated
power cube from an old printer, it has been working well that way for
several months now. The specs say it will shutdown at around 18V so it
will probably be OK at 19.5, if it is a unregulated brick the actual
output may even be a bit higher than rated voltage. I made my power
connections by soldering the leads from the power cube to square pins
and shoving the square pins into the connector on the board. I suspect
it could run of AC too however I have never tried it, since it is
designed for telco systems they would not spec AC power.
I made my antenna connection using a SMB to BNC pigtail and terminated
the antenna cable with a BNC connector. I use a couple more of the
same pigtails for the 10MHz and even second outputs.
Paul.
On 9/06/13 5:18 PM, quartz55 wrote:
I got this thing today. Here's some pics of it.
http://s251.photobucket.com/user/DogTi/library/time?sort=3&page=1
Can anyone tell me anything significant about it? I know less than nothing as
I'm real new to this. It came with a Alcatel Lucent 26dB antenna, pipe mount
and a couple of SMB pigtails. I have a couple of SMB to BNC connectors I can
use easier for the antenna and 10MHz out.
I looked at the PS circuit and indeed pins 1 and 4 on the back connector that
are isolated from ground go directly to the AC input of a bridge, so it looks
like one could put about anything on the input in either polarity. I made a
drawing of the input circuit. I wonder if I could put AC on it? I've got a
19.5VDC 4A brick I may try unless someone tells me not to. Otherwise I can
make up a 24 to 48VDC supply. Instead of buying the $6 connector I think I'll
just push some #20 wires into the pins and fasten them down somehow. Looks
like 1a,b,c,d are one side and 4a,b,c,d are the other. The connector looks
unsexed, but I suppose this unit just pushes into a rack so it doesn't matter.
I'll install the antenna and feed, not sure what I'm going to use for cable, I
have a bunch of RG-8X and also some 75 ohm tv stuff, but how to get the 75 ohm
stuff to the N connector on the antenna and the SMB on the unit. I have an N
to BNC and maybe I can just rig some BNC connectors on the 75 ohm stuff. I
suppose I should check the feed line for shorts or opens before I hook anything
up to anything. Should I check the unit antenna input for +5V before I connect
the antenna, the antenna instructions says it takes +5DC bias for the active
antenna?
Will the antenna be high enough just above the peak of the roof, above that is
about another 50' of a couple of oak trees right above and to the north? I
could put it on the deck but not as high, but it gets out from under the oak
trees a bit and has a real good southern view, I'm not sure where these birds
are.
Suggestions welcome. I'm going out to get the feed line ready. We're leaving
in another hour or so, so I don't have much time to play with this thing.
Should I get the LH and com port working before I get too far or should I just
plug this thing together and see what happens?
Dave
N3DT
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