French Press Coffee Maker 21 oz, Camping Plastic Glass French Coffee Press, Medium Size Tea and Frothed Milk Press,100% BPA Free Prensa Francesa, Rust-Free and Dishwasher Safe (21 oz)

1. Due to structural limitations . the isolation of S12 is 10dB worse than that of S21. Above 3GHz . the performance decreases with the increase of frequency . and the port isolation is only 50dB at 6GHz. Below 1MHz . performance degrades with frequency . with effective dynamics dropping to 70dB at 100kHz.

2. Using a higher accuracy calibrator allows for higher accuracy measurements.

3. When the frequency is lower than 1MHz or higher than 3GHz . the output power may be reduced.