Ya when I first got into the hobby I tried this, and others guys have tried! Habbico Redhawks crystals 27 FM has some that worked, but they stopped making them![>:]
But Heng long has now started doing their own, so at least we have 10 channels now! But for me the more I work with the DBCRC2,, it seems the way to go eventually for all my tanks that have the Heng long electronics in them!

The Blitz