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Model Forum / Radio Controlled / Air Models / April 2004



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Soldering antenna wire-

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Sisyphus - 02 Apr 2004 19:53 GMT
I have a reciever with an antenna wire that was broken about 3/4" from
the reciever case.  I stripped the wire and wound the broken ends and
soldered them together.  I then applied a good amount of vinyl tape
the joint.

How far should the range test go before I declare it safe?  Are there
any considerations that have escaped my conderation?

Thanks,

Sisyphus
John Alt - 02 Apr 2004 20:45 GMT
> I have a reciever with an antenna wire that was broken about 3/4" from
> the reciever case.  I stripped the wire and wound the broken ends and
[quoted text clipped - 3 lines]
> How far should the range test go before I declare it safe?  Are there
> any considerations that have escaped my conderation?

If you have any noticeable loss from before, you should be worried. If
it broke off that close to the receiver, I would have just put a new
antenna on to be sure there were no broken areas still under the
insulation. But if you range check OK, and there aren't any disturbed
areas left in the insulation to worry about, then you're good to go. You
might want to pick up some heat shrink next time you order from someone
that carries it, and replace the tape with it. If you should ever have
to re-solder that area, the glue from the tape will make a good job
almost impossible.
Ted Campanelli - 02 Apr 2004 20:49 GMT
On 4/2/2004 1:53 PM Ted shuffled out of his cave and grunted these great
(and sometimes not so great) words of knowledge:

Just do a normal range test.  If the receiver is working properly you
should be OK.  If any antenna is missing it is probably minimal and
should not effect your reception.  You did measure the repaired antenna
to see if it was ABOUT 39" long, didn't you ?

The only other suggestions I can make are:

Did you clean the solder joint afterwards to prevent corrosion ?

I would substitute some heat shrink tubing or "liquid electrical tape"
in place of the vinyl tape.  The vinyl tape, beside being bulky, has a
good chance of "unraveling" as it ages, which can in turn expose the
connection and/or foul/jam the controls.

> I have a reciever with an antenna wire that was broken about 3/4" from
> the reciever case.  I stripped the wire and wound the broken ends and
[quoted text clipped - 7 lines]
>
> Sisyphus
Paul McIntosh - 02 Apr 2004 22:03 GMT
It should range check the same as before.  These receivers are fairly
tolerant of an inch or two.

--
Paul McIntosh
http://www.rc-bearings.com
> I have a reciever with an antenna wire that was broken about 3/4" from
> the reciever case.  I stripped the wire and wound the broken ends and
[quoted text clipped - 7 lines]
>
> Sisyphus
The Natural Philosopher - 03 Apr 2004 09:02 GMT
> I have a reciever with an antenna wire that was broken about 3/4" from
> the reciever case.  I stripped the wire and wound the broken ends and
[quoted text clipped - 3 lines]
> How far should the range test go before I declare it safe?  Are there
> any considerations that have escaped my conderation?

No. That's all you do. Very few of my models have their original
antennae in. Mostly I build in a piece of wire into the wings or
fuselage of about the right length and solder it to a short pigtail left
on the receiver.

> Thanks,
>
> Sisyphus
Sisyphus - 05 Apr 2004 16:51 GMT
Thanks for the reply-  I'll let it go at that.

> > I have a reciever with an antenna wire that was broken about 3/4" from
> > the reciever case.  I stripped the wire and wound the broken ends and
[quoted text clipped - 12 lines]
> >
> > Sisyphus
 
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