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WangoTango

In article ,
says...

WangoTango wrote:

In article ,
says...

WangoTango wrote:

In article ,
says...

amdx wrote:

On 5/8/2014 1:25 PM, WangoTango wrote:
In article , To-Email-Use-
says...
This new, very well-insulated, foil-backed, house has one drawback...
the garage door opener range with the garage door closed is only about
20'

Any ideas on how I could extend that range?

...Jim Thompson

An external antenna would be the easiest thing.

I'm with you, antenna is the solution.
I'd try cutting a director and reflector to proper lengths
and just hung then in place for a test.
Two pieces of wire could solve his problem.

That will detune the front end since it wasn't designed for a
complex, 50 ohm antenna. Some of the single board controllers have an
etched trace for the antenna. Also, any physical modification voids the
FCC acceptance. Some of these are super regen, and a better antenna will
radiate crap that will cause interference.

That's a lot of speculation and maybes.
How about he look at what he has and goes from there.
I'll bet it is one of the single chip code hopping solutions from any
one of a bunch of manufacturers and I doubt that it will be a super-
regen anything.
And, he didn't say that he cared if the FCC might not like the mod.

How many have you worked on?

One more than you have.

If that were true, you would know how sensitive the front end is to
detuning. The additional capacitance of coax would take it out of band
without reducing the inductance in the tuned circuit. BTW, I repaired
hundreds of the damned things for a garage door company that was owned
by a friend. I repaired stuff from early tube designs, up to rolling
code. From single function, to specials models that controlled eight
doors for firehouses.

That's awesome, but it has absolutely nothing to do with the problem at
hand, and that is Jim's SPECIFIC unit. Which is most likely NOT some
regenerative design.