30 – 31. Online radio measurement converters, electronics calculations, electrical calculators and Somalia photos 49.
6 February 2021.
Online radio measurement converters.
Online radio measurement converters.
Online electronics calculations,
Online electrical calculators.
The All Frequency Database Index is here: http://sites.google.com/site/somaliaamateurradio/somaliaphotos10
You are here:
30 – 31. Online measurement converters.
30.1 Calculate antenna ERP and calculate antenna EIRP.
30.2 Convert antenna ERP to antenna EIRP.
30.3 Convert dBm, dBu, voltage and S-units.
30.4 Convert dBW and Watts.
30.5 Convert dBm and dBW.
30.6 Convert dBm, power and voltage.
30.7 Convert length units and distance units.
30.8 Convert power units.
30.9 Convert frequency units.
30.10 Convert wavelength units.
30.11 Find full wavelength, three quarter wavelength, five eighths wavelength, half wavelength and quarter wavelength.
30.12 Convert frequency to wavelength and convert wavelength to frequency.
30.13 What is the International date? What are the local regional times in the USA? What is the Universal time?
30.14 What are the current local times around the world?
31. Magnetic field strength measurement.
30.
Online measurement converters.
30.1
Calculate antenna ERP and Calculate antenna EIRP.
Antenna ERP and Antenna EIRP.
Calculate both the effective isotopic radiated power (eirp) and the Effective Radiated Power from the antenna.
Enter the transmitter power output in Watts or dBW.
Enter the antenna gain in dBi or dBd.
Press calculate.
http://www.csgnetwork.com/antennaecalc.html
What is Effective Radiated Power ERP?
Effective Radiated Power is
ERP is
What is Effective Isotopic Radiated Power?
Effective Isotopic Radiated Power is
Eirp is
What is Equivalent Isotropically Radiated Power?
Equivalent Isotropically Radiated Power is
Eirp is
EIRP is
http://en.wikipedia.org/wiki/Equivalent_isotropically_radiated_power
30.2
Convert antenna ERP to antenna EIRP.
Antenna ERP converted to Antenna EIRP.
Convert ERP to EIRP.
Change ERP to EIRP.
Convert EIRP to ERP.
Change EIRP to ERP.
EIRP = ERP multiplied by 1.64.
ERP = EIRP divided by 1.64.
30.3
Convert dBm, dBu, voltage and S-units.
dBm.
dBm is the power expressed in Decibels relative to one milliwatt (1 mW)
dBu.
dBm and dBu.
Convert dBm to dBu to Voltage and to S-units.
30.4
Convert dBW and Watts.
dBW.
dBW is the power expressed in Decibels relative to one Watt (1 W)
Watts.
Power converter.
Power in dBW and Power in Watts
Convert a dBW power level to its equivalent value in Watts.
Convert a Watts power level to dBW.
dBW is decibels relative to 1 Watt.
https://www.rapidtables.com/electric/dBW.html
30.5
Convert dBm and dBW.
dBm and dBW.
dBm from -60 dBm to 100 dBm
dBW from -90 dBW to 70 dBW
http://www.radio-electronics.com/info/formulae/decibels/dBm_dBW_table.php
30.6
Convert dBm, power and voltage.
dBm to power and Voltage.
Conversion of dBm to power and Voltage.
Conversion of Power and Voltage to dBm.
Convert microwatts to dBm.
Convert milliwatts to dBm.
Convert Watts to dBm
Convert dBm to microwatts.
Convert dBm to milliwatts.
Convert dBm to Watts.
-70 dBm to +75 dBm converted to 100 picowatts to 31.62 kilowatts.
0 dBm is 1 milliwatt (1 mW).
This is a 50 ohm power conversion table.
https://www.ahsystems.com/EMC-formulas-equations/dBm_Volts_Watts_Conversion.php
30.7
Convert length units and distance units.
Convert units of length and units of distance.
Convert lengths and distances.
Distance converter / Length converter.
Change miles to kilometers (km).
Change miles to kilometres.
Convert kilometers to miles.
Change kilometres to miles.
Change metres (m).
Change meters.
Change millimeters.
Change millimeters.
Change micrometres (µm, mu m, mu/m, mu.m, micron).
Change micrometers.
Change millimetres (mm).
Change millimeters (mm).
Change centimetres (cm).
Change centimeters.
Change nanometers (nm).
Change nanometers.
Change picometres (pm).
Change picometers.
Change rod.
Change mil.
Change point (pt).
Change Angstrom.
Change astronomical unit (AU).
Change parsec.
Change light year (LY).
Change nautical mile (US).
Change nautical mile (UK).
Change league.
Change inch (in).
Change inches.
Change foot (ft).
Change feet.
Change Fermi (fm).
Change Fathom.
Change em.
Change ell.
Change caliber.
http://www.theonlineconverter.co.uk/conversions/length.htm
micrometres (µm, mu m, mu/m, mu.m, micron).
30.8
Convert power units.
Convert units of power.
Convert power measurements.
Femtowatt (fW) and other POWER units are here.
Power
Petawatt (PW)
Terawatt (TW)
Gigawatt (GW)
Megawatt (MW)
Kilowatt (kW)
Watt (W)
Milliwatt (mW)
Microwatt (µW)
Nanowatt (nW)
Picowatt (pW)
Femtowatt (fW)
Zeptowatt (zW)
Metric horsepower (hp)
Mechanical horsepower (hp)
http://www.unitjuggler.com/power-conversion.html
30.9
Convert frequency units.
Convert units of frequency.
Frequency units.
1 Khz (Kilohertz) = 1000 Hz.
1 Mhz (Megahertz) = 1000 kHz.
1 GHz (Gigahertz) = 1000 MHz.
1 THz (Terahertz) = 1000 GHz.
1 PHz (Pentahertz) = 1000 THz.
1 EHz (Exahertz) = 1000 PHz.
1 ZHz (Zettahertz) = 1000 EHz.
1YHz (Yottahertz) = 1000 ZHz.
30.10
Convert wavelength units.
Convert units of wavelength.
Wavelength units.
micrometres (micrometers, µm, mu m, mu/m, mu.m, micron).
namometers (manometers, nm)
1 km = 1000 m (meter metre).
1 m = 1000 cm (Centimeter, Centimetre).
1 cm = 1000 mm (Millimeter, Millimetre).
1 mm = 1000 µm (Micrometer, Micrometre).
1 µm = 1000 nm (Nanometer, Nanometre).
1 nm = 1000 pm (Picometer, Picometre).
1 pm = 1000 fm (Femtometer, Femtometre).
1 fm = 1000 am (Attometer, Attometre).
1 am = 1000 zm (Zeptometer, Zeptometre).
1 zm = 1000 ym (Yoctometer, Yoctometre).
30.11
Convert frequency to wavelength.
Frequency / Wavelength.
Frequency and Wavelength.
Wavelength. and Frequency.
Find the full wavelength.
Find the three quarter wavelength.
Find the five eighths wavelength.
Find the half wavelength.
Find the quarter wavelength.
Find the frequency wavelength in feet.
Find the frequency wavelength in inches.
Find the frequency wavelength in meters.
Find the frequency wavelength in metres.
Find the frequency wavelength in millimeters.
Find the frequency wavelength in millimeters.
http://www.onlineconversion.com/frequency_wavelength.htm
30.12
Convert frequency to wavelength.
Convert wavelength to frequency.
Convert Hz to m,
Convert kHz to m,
Convert MHz to m,
Convert MHz to cm,
Convert MHz to mm,
Convert MHz to µm,
Convert megahertz to nanometers this way.
Convert nanometers to megahertz this way.
Convert megahertz to nanometres this way.
Convert nanometres to megahertz this way.
First convert nm to µm.
(1). Nanometre (nm) = 0.001 Micrometre (µm)
Example 630 nm is 0.630 µm
(2). Use 0.630 µm in the online converter (= 475861044.44444 MHz)
Convert GHz to m, Convert m to GHz.
Convert GHz to cm, Convert cm to GHz.
Convert GHz to mm, Convert mm to GHz.
Convert GHz to µm, Convert µm to GHz.
Convert GHz to nm, Convert nm to GHz.
Convert gigahertz to nanometers this way.
Convert nanometers to gigahertz this way.
Convert gigahertz to nanometres this way.
Convert nanometres to gigahertz this way.
First convert nm to µm.
(1). Nanometre (nm) = 0.001 Micrometre (µm)
Example 630 nm is 0.630 µm
(2). Use 0.630 µm in the online converter (= 475861044.44444 MHz or 475861.04444444 GHz or 475.861044444 THz)
Convert THz to m, Convert m to THz.
Convert THz to cm, Convert cm to THz.
Convert THz to mm, Convert mm to THz.
Convert THz to µm, Convert µm to THz.
Convert THz to nm, Convert nm to THz.
Convert terahertz to nanometers this way.
Convert nanometers to terahertz this way.
Convert terahertz to nanometres this way.
Convert nanometres to terahertz this way.
First convert nm to µm.
(1). Nanometre (nm) = 0.001 Micrometre (µm)
Example 630 nm is 0.630 µm
(2). Use 0.630 µm in the online converter (= 475.861044444 THz)
Hertz (Hz).
Exahertz (EHz).
Pentahertz (PHz).
Terahertz (THz).
Gigahertz (Ghz).
Megahertz (MHz).
Kilohertz (KHz).
Hectohertz (hHz).
Dekahertz (daHz).
Decihertz (dHz).
Centihertz (cHz).
Millihertz (mHz).
Microhertz (µHz).
Nanohertz (nHz).
Picohertz (pHz).
Femtohertz (fHz).
Attohertz (aHz).
Cycle per second (cycle /second, c/s).
Wavelength in exametres (Em).
Wavelength in pentametres (Pm).
Wavelength in terametres (Tm).
Wavelength in gigametres (Gm).
Wavelength in megametres (Mm).
Wavelength in kilometres (Km).
Wavelength in hectometres (hm).
Wavelength in dekametres (dam).
Wavelength in metres (m).
Convert wavelength in metres to frequency in Hertz.
Convert wavelength in meters to frequency in Hertz.
Convert frequency in Hertz to wavelength in metres.
Convert frequency in Hertz to wavelength in meters.
Convert wavelength in metres to frequency in kilohertz.
Convert wavelength in meters to frequency in kilohertz.
Convert frequency in kilohertz to wavelength in metres.
Convert frequency in kilohertz to wavelength in meters.
Convert wavelength in metres to frequency in megahertz.
Convert wavelength in meters to frequency in megahertz.
Convert frequency in megahertz to wavelength in metres.
Convert frequency in megahertz to wavelength in meters.
Convert wavelength in metres to frequency in gigahertz.
Convert wavelength in meters to frequency in gigahertz.
Convert frequency in gigahertz to wavelength in metres.
Convert frequency in gigahertz to wavelength in meters.
Convert wavelength in metres to frequency in terahertz.
Convert wavelength in meters to frequency in terahertz.
Convert frequency in terahertz to wavelength in metres.
Convert frequency in terahertz to wavelength in meters.
Wavelength in metres
Wavelength in metres
Wavelength in metres
Wavelength in decimetres (dm).
Wavelength in centimeters (cm).
Wavelength in millimeters (mm).
Wavelength in micrometres (µm).
Electron Compton wavelength.
Electron Compton Proton.
Electron Compton Neutron.
http://www.unitconversion.org/unit_converter/frequency-wavelength.html
30.13
Time.
Univeral Time (UT, UTC, GMT)
UTC (GMT) time and date.
What is the time now?
The UTC time now is?
The UTC date now is?
EDT Eastern Time and date now
CDT Central Time and date now
MDT Mountain Time and date now
PDT Pacific Time and date now
AKDT Alaska Time and date now
HAST Hawaii-Aleutian Time and date now
US Naval Observatory master clock time updated every second.
https://www.usno.navy.mil/USNO/time/display-clocks/simpletime
30.14
Current local times around the world.
What is the local time in?
The local time listed by country.
The local date listed by country.
The local time and date listed by country.
http://www.timeanddate.com/worldclock/custom.html?sort=1
The local time listed by city.
The local date listed by city.
The local time and date listed by city.
http://www.timeanddate.com/worldclock/custom.html?sort=0
The local time listed by time zone.
The local date listed by time zone.
The local time and date listed by time zone.
http://www.timeanddate.com/worldclock/custom.html?sort=2
31.
Magnetic field strength measurment.
Magnetic field strength H is measured in ampere per meter.
A magnetic field strength of 1 A/m corresponds to 1.257 microtesla (µT) or 12.57 milligauss (mG).
Introduction to Magnetic field.
http://en.wikipedia.org/wiki/Magnetic_field
Introduction to field strength.
http://en.wikipedia.org/wiki/Field_strength
How to build a radio station in Somalia.
How to build a radio station antenna in Somalia.
The completed 6.5 MHz to 30 MHz Log periodic antenna and the 3.9 MHz and 6.9 MHz dipole antennas in Galkayo, North East Somalia.
Visible are the two Short wave radio wire dipole antennas left and right of the completed new directional antennas at the Galkayo Police station, Galkayo, North East Somalia in August 1994.
The wire antennas were first installed in July 1993 for Radio Free Somalia (“Free for all to use” known later as Radio Galkayo) broadcasts and for the worldwide two-way ham radio communications training that lead to the friendship with an Australian amateur radio operator that resulting in the donated new antenna, transmitter, amplifier and training in August 1994.
North East Somalia became the Puntland State of Somalia on the 1st August 1998.
(Photo Sam Voron 6O0A, VK2BVS).
Index https://sites.google.com/site/somaliaamateurradio/index1
Contact: Sam Voron VK2BVS, 6O0A.
Email somaliahamradio@yahoo.com