Yeah, I've used a ceramic resonator before with great results.
I took a 400khz and divided by 10 and the xmtr worked great.
I had these 38khz receiver modules in my parts drawer and been having some difficulty as I couldn't find anything in a ceramic resonator that was either 38khz or divide down to it. (?)
Looked everywhere....digi key, mouser, newark...nothing.
Plenty of 40 and 400 CR though.
So I wasted alot of time breadboarding a 4011 with a 38khz crystal....it works but the start up time is ridiculous and a little change in Vcc changes the frequency so much.
I thought an R/C might be alright at only 38khz but I'll go back to the ceramic resonator and 40khz.
Why no 38 khz CR parts? There is a 420 and 455 khz that divided can get close.