Hi, I am learning for new job as a technician for CATV company and I need one thing that I probably dont receive from my company and I dont want to buy it in first month for about 1500$.
I need to measure gain in dB on two frequencies (147,25 and 855,25 MHz) that are passing through coax cable from company box in houses to the flats. If the gain is lower than 50dB and higher than 70dB, internet through CATV will not work and HD canals will sometimes not work too...
So I just want to know, if there is something, that I can do with my Arduino UNO (or maybe Raspberry Pi), to measure the gain only on these two freqs (tolerance of +- 2dB is good)?
Thanks for the replies
EDIT: I dont need any graphs, I just need to show me this on my I2C 20x4 LCD:
147,25 MHz - XX dB
855,25 MHz - XX dB
And we are working with Promax 10 Premium QAM Analyzers, but I need just only this one function for the start.