GRF-1300 A, as optional accessories for the GSP-730, is a trainer for basic RF communications experiments.The GRF-1300 A RF Trainingskit not only offers all the functions of the GRF-1300 RF-Training Kits, but is extended also with mixer and band-pass filter. Users can view the properties of the mixer and a better understanding of the band-pass filter by a scalar network analyzer measurements by the combination of GSP-730 spectrum analyzer, GRF-1300 A RF Communications Trainers and USG signal generator is generated.The combination of the USG signal generator and GRF-1300 A mixer function can 2.4 GHz AM and FM-modulation signals. The GRF-1300 A band-pass filter, the output signals by filtering out the vibrations and interference caused by mixer output signals are generated, clean up.This text is machine translated.