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-- Our Next Meeting --
January 16, 2020 @ Eisenhower Rec Center MacArthur/Arnold Room 6:00 PM Social/Swap Tables/informal "Elmer'ing" 6:45 PM Business Meeting 7:40 PM TBA Our "Cookie Monster" - TBD |
K4VRC RF Safety Calculators
Estimating Your Monopole & Dipole Antenna Maximum Permissible Exposure
Transmitter Output (5 - 1500 Watts) ....
Modulation (20 - 100% Duty Cycle) ......
Frequency (1 - 3,000 MHz) ..............
Antenna Gain (-20 to +20 dBi) ..........
Tuner or Match loss (-10 to +0 dB) .....
Coaxial cable loss (-20 to +0 dB) ......
Typical transceiver maximum output is 100W SSB/CW or 25W digital/AM. Modulation duty cycles; SSB 20%, SSB with speech processing 40%, CW 40% and AM, FM, Digital modes are 100%. Antenna, tuner, match circuit and cable gains/loss are limited to prevent input errors. Ground reflections of antennas within a wavelength of the surface have a significant effect on radiations patterns proportional to the soil conditions, surface water or conductive surfaces. These reflections normally increase the RF levels near the antenna and are included in the results provided. To obtain a free space results (no ground reflections) from this calculator include an additional 4.1 dB of cable loss.
The results should display values immediately when CALCULATE is clicked. You may need to allow active content to run on your web browser.
Estimating Your 1 M Diameter Magnetic Loop Antenna Maximum Permissible Exposure
Transmitter Output (5 - 1500 Watts) ....
Modulation (20 - 100% Duty Cycle) ......
Frequency (3 - 30 MHz) .................
Coaxial cable loss (-20 to +0 dB) ......
Typical transceiver maximum output is 100W SSB/CW or 25W digital/AM. Modulation duty cycles; SSB 20%, SSB with speech processing 40%, CW 40% and AM, FM, Digital modes are 100%. Cable loss is limited to prevent input errors. Ground reflections of antennas within a wavelength of the surface have a significant effect on radiations patterns proportional to the soil conditions, surface water or conductive surfaces. These reflections normally increase the RF levels near the antenna and are included in the results provided. To obtain a free space results (no ground reflections) from this calculator include an additional 4.1 dB of cable loss.
The results should display values immediately when CALCULATE is clicked. You may need to allow active content to run on your web browser.