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Free Downloads and FCC
resources:
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| TV,
CATV, and MMDS links |
International Television System Standards (from CCIR Report 624) VHF Television (CATV) frequency Chart UHF Television frequency Chart Permitted Forms of Low Power (AM, FM, and TV) Broadcast Operation MMDS Frequency Chart |
| Marine
radio, Coast Guard, Distress, and Weather related links |
U.S.
VHF Maritime Channels and Frequencies International VHF Maritime Radio Channels and Frequencies Maritime VHF Narrowband Channels - 12.5 kHz Distress Frequencies NOAA Weather Radio Frequencies Citizen's Band Radio frequency Chart |
| Aeronautical
& Aviation |
Ac-u-kwik - Global
Resource for Aviation Information SkyVector Aeronautical charts and Flight Planning AirNav Airport Information FAA & NOTAM's |
| Geocoding,
address to Waypoint conversion |
Acme Mapper FFIEC Geocoding System Microsoft Live Search TerraServer MelissaData |
| Calculators | Javascript
geodetic azimuth distance/bearing Calculator NOAA Improved Sunrise-Sunset Calculation Antenna Tilt Angle Calculator |
| - - 50 and 75 ohm field strength calculator - Voltage/power ratio to dB conversion - Pulse RF/Radar, Average and Peak Power calculator with duty cycle given Pulse Width, PRI, or PRF - Radar Mile / Propogation Time and Distance calculator - VSWR, Return Loss, Mismatch Loss, and Reflection Coefficient conversion - Directional Coupler tap loss (coupling coefficient) - Coupler directivity uncertainty - Mismatch error (uncertainty) - Mismatches with the impedance that can provide the mismatch. - Reduction of VSWR and Impedance by introducing attenuation (non-lossless transmission line) - Calculate line attenuation (insertion Loss) of a transmission line given output and input VSWR - Fresnel zone calculator - Free Space Path Loss calculator - English/Metric conversion - Frequency to wavelength conversion - Antenna Near Field Distance, transition region - Antenna Far Field Distance - Near Field Power Density - Far Field Power Density - ERP and EIRP - Hazard Distance Calculator (PEL), for fixed-beam radar - Hazard Distance Calculator (PEL), for scanning radar - Scanning Duty Factor Calculator - ERP and EIRP - Geodetic calculator (inverse & forward) |
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Weltwireless no longer has any business
affiliation with EMCEE Broadcast Products, Inc. or any of its
past management.
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