On Tue, 27 Sep 2011 01:36:21 -0700, ydoubleuz_at_gmail.com wrote:

> My assumption:

> 1. "R" & "T" denotes receive & transmit respectively. 2. The digits

> represent the frequencies. 3. If I replace these 2 "R" and "T" to same

> frequency value, they should work.

They should work if the frequency is close enough so the signal can pass 

any tuned circuit or filter in its path, should they exist.

> Not sure if these assumptions are true or these components are not

> resonators. Can anyone help please?

They should be SAW based as, IIRC, crystals cannot go that high in 

frequency by themselves. Many resonators I've encountered are "crystal-

like" passive devices, ie. something that can be put in oscillation into 

an active circuit or used as a filter depending on how you connect it, 

but information is a bit scarce on the net. Some examples can be found 

though by googling for saw+schematic+receiver(or transmitter).

If anybody has more information, I'm interested in the subject as well!