Cheap UHF spectrum analyzer (and RC tx rx) using RFM22 module

Hi Great Find this Good work !!!!!!!

I downloaded the programs and Pde. but i get compilation errors almost so much that it looks like im missing a library , can some one please confirm this ? i have played with the RF22 modules alot so i have the RF22.h libraries but i cant get this source code to compile

any help would be great