clone chipset
 

I have been thinking of modifying my clone and when I opened it up instead of the black epoxy blob there is I smt chip labelled RX-2BS and the company logo is "SL" inside an oval. The transmitter is the same logo but the part # is TX-2B. I was thinking that if I could find the manufacturer of these chips then I could order some and make my own TX and Rx units but I cannot find the manufacture. I have tried IC-ID
and Find chips to see if any companies sell it but with no avail. Does anyone know who makes this chip and where I can buy it?

Current rev. of the chips set is RX2C/TX2C. I have been unable to find a datasheet on any rev. but C.

Datasheet is here:
http://www.arestek.com.cn/Datasheet/...ion(V2.00).pdf