Wrc-1992 Diagram Calculator [TRUSTED]

To compute of any WRC-92 band from its edge frequencies:

| Frequency range | Primary service (Reg. 2) | Secondary | Footnote example | |----------------|-------------------------|-----------|------------------| | 525–1606.5 kHz | Broadcasting | Fixed, Mobile (aeronautical mobile except) | S5.76 | | 88–108 MHz | Broadcasting | Fixed, Mobile (except aeronautical mobile) | S5.192 | | 420–450 MHz | Fixed, Mobile (except aeronautical mobile), Radionavigation (radiosonde) | Amateur (430–440 MHz) | S5.282 | | 1240–1300 MHz | Amateur, Fixed, Mobile (except aeronautical mobile), Radiolocation | | S5.329 | | 2700–2900 MHz | Radionavigation (radar), Radiolocation | Fixed, Mobile (except aeronautical mobile) | S5.423 | | 10.7–11.7 GHz | Fixed, Mobile (except aeronautical mobile), Broadcasting (satellite) | | S5.484 |

E_int = E_desired - Protection ratio (dB)

Early tools like the 1948 Schaeffler Diagram were revolutionary but flawed; they didn't account for nitrogen, which is a powerful stabilizer of the non-magnetic austenite phase.