Calculators
SNR dB to Linear Ratio Calculator
https://3roam.com/snr-db-to-ratio-calculator/
Excellent cable insertion loss calculator – compares RG58, LMR240, LMR400 and others
astronomy.network The Website of Lichfield Radio Observatory (LRO)
Andrew Thornett, Lichfield, England, M6THO, andrew (at) thornett (dot) net