GW-Instek-GRF-3300K-RF-&-Spectrum-Analyser-Training-System-GW-Instek-GRF-3300K-Training-P-The-GW-Instek-GRF-3300K-training-system-is-designed-for-a-high-frequency-range-of-wireless-applications-This-superior-system-is-equipped-with-digital-phase-locked-loop-PLL-&-a-micro-strip-line-filter-MLF-with-a-design-range-from-730 M Hz-up-to-960 M Hz-2-4 G Hz-which-is-increasingly-important-in-the-education-field-By-using-the-Wireless-Voice-Communication-system-students-can-practical