Solar Conditions
Live NOAA solar flux and Kp
Propagation planning workbench
Propagation estimates with units, equations and stated limits. They cannot predict whether you will make a contact.
Radiated-power arithmetic
Tracks transmitter output through feed loss to maximum-direction antenna gain.
Calculation
EIRP = Ptx × 10^((gain dBi − loss)/10). ERP uses gain over a half-wave dipole; dBi = dBd + 2.15.
Meaning
This is peak-direction arithmetic. Confirm whether published antenna data is gain or realised gain before separately adding mismatch loss.
Not an RF-exposure compliance result. Compliance needs frequency, duty cycle, distance, field region and applicable limits.
Current solar-terrestrial observations
This page reports live NOAA measurements and scale summaries with their observation times. It does not claim a contact or band opening. Actual propagation depends on path, local time, season, ionosphere, noise, antennas and station capability.
Press Refresh current data. No background polling.