it's been said that I don't show enough
information about how I connected this
coax to this board and just to clarify
that I'm hoping as you can see this the
coax the hole in this piece of plastic
was big enough for this coax to go in
there and this is where the original
antenna came out so I found in my
situation I did not have to connect the
outer shield to ground the outer shield
is this foil and braided wire that's on
the outside of the Senate connector at
Center wire a piece of copper right
there with sobbing to the circuit board
right here where the original antenna
was connected unsoldered that purple
antenna wire and soldered this copper
wire in its place and then I cut off the
shield and that foil and then
reinstalled this and what I did was cut
that relax like this sobbing this to the
circuit board and I cut this foil on the
shield off and I found it necessary to
connect this to ground I could he have
stripped us back and make this longer I
come over here to connect it to screwed
something that's metal this is plastic
it's a bad place to connect it to make
it to ground or I could solder a wire to
this and then run that wire to here and
connect it to ground I did not find it
necessary and I'll show you how the
strip is collect that's like easy one
thing further I have seen a couple of
these garage door openers that have a
terminal sticking out here or connecting
external antenna which case you would
have a fitting like this on the end of
your coax and you would just screw that
on to that and the way you go some of
the external antenna kits that are being
sold would already have these connectors
on the end of the wire although the life
of the wire and some of those kids
can be quite short show you how to
prepare the end of this coax without any
special tools you have an old piece of
coax just cut the end off get back to
fresh material we're going to cut this
back quite a ways to expose the braided
shield
bring this back cut it off with a knife
or nippers or a scissors just cut the
outer covering try not to damage the
braid take something like an ice pick
just come in here and gently start
unbraided this outer shield in a
straight line and as much as possible
bring it all down here by the rubber
coating and just twist it
sometimes this foil is stuck to the
inner core get it back here and
sometimes it will break off otherwise
you cut it off we only need a short
length of the center copper let's take a
sharp knife and come in here and I just
score this inner core and I want to do
that without nicking the copper and I
twist that and then pull it off that's
all there is to it we only need about
this much we'll push this up as close as
we can to the circuit board solder that
to the circuit board and then cut off
the excess so it doesn't stick out past
the solder side if necessary we can
attach this to ground if this is not
long enough we can solder this right
here and solder a flexible wire to it
and take that to ground connection the
purpose of the shield is to prevent
extraneous signals from getting to a
receiver and by connecting this to
ground we make this an effective shield
for the center conductor in my case I
didn't find that it made any difference
these garage door openers don't seem to
be very high-tech and the signal
received does not seem to be sensitive
to antenna length on the other end of
the wire that was outside I cut this off
I soldered the original purple wire to
this and put some heat-shrink on here
and the only reason I put the original
antenna wire on here is it was a
flexible wire this wire is very stiff
and is prone to breaking or getting
kinked that original wire was very
flexible and not as likely to get
damaged over the years so that's why I
did that how you do it is strictly up
here if the shield is grounded you will
need a length of wire solder to this
copper roughly equivalent to the length
of the original antenna wire
removes from the door opener
you
