On Mon, 28 Sep 2015 09:11:43 -0700, Don Y
wrote:

On 9/28/2015 8:22 AM, Jeff Wisnia wrote:
wrote:
What about the receivers that worked at receiving the signals from those
transmitters????

They are built into the sick/dead garage door openers, which ended up tossed
into a dumpster.

They're usually built onto the "back cover". When I replace an opener,
I pull that cover off and set it aside -- self-contained remote control
system (albeit one in an unusual form factor).

On the chamberlain/Crafstman GDO I have sitting on the bench right
now, the RF receiver is on the same card as the motor controller. It
is one FRU for just about everything .