On Wed, 07 May 2014 21:45:22 -0700, Jim Thompson
wrote:

I have some old 455kHz ceramic filters... maybe that's the way to do
it :-}

Ummm.... no. I suggest that you give up on building your own and
purchase something that has a chance of actually working:
www.ebay.com/sch/i.html?_nkw=wireless+remote+switch
Look for 315 MHz and something with a momentary/timed/latch output
jumper for the relay(s). Install the receiver antenna or the entire
receiver outside your shielded garage for optimum range.

--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558