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5 February 2021.
Infrared wavelengths.
Infrared
Infrared astronomy,
Experimental Infrared radiation.
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24. Infrared Communications and Emissions.
24.1 Experimental Infrared radiation.
24.
Infrared Communications and Emissions.
Infrared.
IR.
Infrared communication.
Infrared communication systems.
Infrared communications.
Infrared communications systems.
Infrared research.
Infrared experimentation.
Infrared astronomy.
Astronomy on Infrared frequencies.
Astronomy on Infrared wavelengths.
3,000 – 400,000 GHz.
Infrared from 3,000,000 MHz (3000 GHz) extended above the EHF and THF bands.
The frequency of infrared is 3,000 – 420,000 GHz located above the EHF and THF bands.
The frequency of infrared is 3 – 420 THz located above the EHF and THF bands.
The wavelength of infrared is 100,000 nm – 700 nm.
The frequency of infrared is 3,000 – 420,000 GHz.
The frequency of infrared is 3,000 GHz – 420,000 GHz.
The frequency of infrared is 3 – 420 THz.
The frequency of infrared is 3 THz – 420 THz.
The wavelength of infrared is 100 – 0.7 µm.
The wavelength of infrared is 100 µm – 0.7 µm.
The wavelength of infrared is 100,000 – 700 nm.
The wavelength of infrared is 100,000 nm – 700 nm.
Infrared electromagnetic radiation.
Electromagnetic infrared radiation.
Far infrared - middle infrared - near infrared 0.1 mm – 750 nm (3 – 420 THz).
100 µm – 10 µm (3 THz – 30 THz).
Far infrared 100 – 10 µm (3000 – 30000 GHz).
Far infrared 100 – 10 µm (3,000 – 30,000 GHz).
Far infrared 100 µm – 10 µm (3,000 GHz – 30,000 GHz).
Far infrared 100 – 10 µm (3 – 30 THz).
Far infrared 100 µm – 10 µm (3 THz – 30 THz).
Far infrared 100,000 – 10,000 nm (3 – 30 THz).
Far infrared 100,000 nm – 10,000 nm (3 THz – 30 THz).
Middle infrared 10 – 1 µm (30000 – 300000 GHz).
Middle infrared 10 – 1 µm (30,000 – 300,000 GHz).
Middle infrared 10 µm – 1 µm (30,000 GHz – 300,000 GHz).
Middle infrared 10 – 1 µm (30 – 300 THz).
Middle infrared 10 µm – 1 µm (30 THz – 300 THz).
Middle infrared 10000 – 1000 nm (30 – 300 THz).
Middle infrared 10000 nm – 1000 nm (30 THz – 300 THz).
Optical infrared communication bands:
1260 – 1360 nm Infrared O band (Original band 1260 nm – 1360 nm).
1360 – 1460 nm Infrared E band (Extended band 1360 nm – 1460 nm).
1460 – 1530 nm Infrared S band (Short wavelength band 1460 nm – 1530 nm).
1530 – 1565 nm Infrared C band (Conventional band 1530 nm – 1565 nm) the most popular.
1565 – 1625 nm Infrared L band (Long wavelength 1565 nm – 1625 nm).
1625 – 1675 nm Infrared U band (Ultra long wavelength 1625 nm – 1675 nm).
Near infrared 1 – 0.7 µm (300000 – 420000 GHz).
Near infrared 1 – 0.7 µm (300,000 – 420,000 GHz).
Near infrared 1 µm – 0.7 µm (300,000 GHz – 420,000 GHz).
Near infrared 1 – 0.7 µm (300 – 420 THz).
Near infrared 1 µm – 0.7 µm (300 THz – 420 THz).
Near infrared 1000 nm – 700 nm (300 – 420 THz).
Near infrared 1000 nm – 700 nm (300 THz – 420 THz).
Introduction to Infrared.
https://courses.lumenlearning.com/boundless-physics/chapter/the-electromagnetic-spectrum/
http://science.hq.nasa.gov/kids/imagers/ems/infrared.html
http://www-ee.stanford.edu/~jmk/pubs/proc.ieee.2.97.pdf
The Infrared Space Observatory (ISO).
https://en.wikipedia.org/wiki/Infrared_Space_Observatory
https://www.cosmos.esa.int/web/iso
https://www.esa.int/About_Us/ESOC/Observations_Seeing_in_infrared_wavelengths
https://www.esa.int/Science_Exploration/Space_Science/ISO_factsheet
Photos made in Infrared and other wavelengths.
https://imagine.gsfc.nasa.gov/science/toolbox/images1.html
24.1
Experimental Infrared.
Infrared experimental radiation.
Infrared Frequency experimental radiation.
Infrared (Inf) experimental radiation (er).
Infer.
InFER.
Includes legal no-license-needed Infrared Experimental Transmitters.
The hobby of exploring Infrared frequencies.
Be aware of the extreme danger to the human body on these microwave frequencies. As you do with the Sun protect the eye and the human body by never looking into or standing in front of an Infrared antenna or any other microwave antenna.
Australia.
Experimental Infrared.
Infrared Experimental radiation in Australia.
Infrared Frequency Experimental radiation in Australia.
Infer.
InFER in Australia.
No transmitter licence (license) is needed in Australia on the Infrared band (see conditions below).
Infer Infrared band in terahertz.
187.5 THz – 420 THz.
(The lower part of this frequency range is refered to as radio or as infrared).
Infer Infrared band in terahertz.
187.500 THz – 420.000 THz.
Infer Infrared band in gigahertz.
187500 GHz – 420000 GHz.
187,500 GHz – 420,000 GHz.
Infer Infrared band in megahertz.
187500000 MHz – 420000000 MHz.
187,500,000 MHz – 420,000,000 MHz.
187.5 million MHz – 420 million MHz.
Infer Infrared band in kilohertz.
187500000000 MHz – 420000000000 kHz.
187,500,000,000 MHz – 420,000,000,000 kHz.
Infer Infrared band in Hertz.
187500000000000 Hz – 420000000000000 Hz.
187,500,000,000,000 Hz – 420,000,000,000,000 Hz.
The Infrared Band where no radio transmitter licence (license) is needed in Australia (see conditions) is from 187.5 THz – 420 THz 1.6 µm – 0.71 µm band (“Infer” Infrared Experimental Radiation).
In the Infrared band where no transmitter licence (license) is needed the maximum radiated antenna power is:
“Infer” 1.6 µm – 0.71 µm band 187.5 THz – 420 THz using a power output of 125 mW.
The Australian Radio communications (Low Interference Potential Devices LIPD class license 2000) with all amendments came into effect on 1 July 2009.
This document (LIPD 2000) includes the amendments to 2009 to allow devises that meet certain power levels on certain frequencies to be used without the need to apply for a license.
LIPD, (section 3, Note) states that LIPD devises must not cause radio frequency interference to other Radio communication devises.
The responsibility is on LIPD owners to resolve interference for example by retuning or stopping their operation.
Radio communications (Low Interference Potential Devices) Class Licence 2000, 1 July 2009, Schedule 1Transmitters, Pages 18.
Australian Communications and Media Authority ACMA (Low Interference Potential Devices LIPD).
Australian infrared communications experiments were conducted by amateur radio operator VK2ZLO.
Infrared transmitter and Infrared receiver.
BUILD AN INFRARED TRANSMITTER AND INFRARED RECEIVER from a kit. Use a torch light reflector to make an infrared directional antenna to boost the range. Check with electronic kit suppliers.
Amateur Radio on Infrared.
Amateur Radio from 275 GHz to 30000 GHz
Amateur Radio from 275 GHz to 30 THz.
https://en.wikipedia.org/wiki/Submillimeter_amateur_radio
Amateur Radio Microwave to light waves distance records. https://www.microwavers.org/index.htm?records.htm
Germany.
Amateur Radio above 275 GHz in Germany.
http://www.gesetze-im-internet.de/afuv_2005/anlage_1.html
United Kingdom.
Amateur Radio from 275 GHz to 3000 GHz in the United Kingdom.
In the UK there are no regulations for frequencies above 3000 GHz 3 THz.
https://rsgb.org/main/operating/band-plans/microwaves/terahertz/
United States.
Amateur Radio above 275 GHz in the United States.
http://www.arrl.org/frequency-allocations
The planet Saturn photographed in Infrared wavelengths.
This is the planet Saturn as seen by the Hubble Space Telescope using a near Infrared frequency Camera and Multi-Object Spectrometer.
A wavelength of 1 µm is indicated by blue and is clear atmosphere down to a main cloud layer.
Shades of blue indicate variations in the clouds particle, size and chemistry.
A wavelength of (1.8 µm is indicated by Green) and yellow colors indicate a haze above the main cloud layer.
A wavelength of 2.1 µm is shown in Red.
Red and orange colors indicate clouds reaching up high into the atmosphere.
The two different colours of Saturn's moons Dione (yellow) on the lower left and Tethys (green) on the upper right indicate they have different surface conditions.
All these wavelengths are reflected sunlight since Saturn's own heat glows only at wavelengths above 4 micrometers.
(Photo 4 January 1998 thanks to Erich Karkoschka (University of Arizona), and NASA via NSSDC)
Saturn has 61 moons.
Infrared astronomy and X-ray astronomy look near the centre of our Milky Way galaxy.
The centre of our Milky Way Galaxy seen at infrared frequencies compared to what is seen on X-ray frequencies (in the circle).
Infrared astronomy in Brown, Yellow and White is near the centre of our Milky Way galaxy.
X-ray astronomy in the circle in Black, White and Blue is also near the centre of our Milky Way galaxy.
The large infrared photo shows the area of X-ray glow along the plane of our Milky Way Galaxy near the centre of our Galaxy as seen from a telescope in space called the Spitzer Space Telescope (formerly the Space Infrared Telescope Facility, SIRTF).
This diffuse haze of X-ray light is from gas that has been heated to millions of degrees by winds from massive young stars, explosions of dying stars, and outflows powered by a supermassive black hole (called Sagittarius A, Sgr A) at the centre of our Milky Way Galaxy.
Another telescope in space known as the Chandra X-ray Observatory looked at the area shown by a small white circle that is marked near the bottom centre in the large photo. It is an area located only 1.4 degrees away from the center of our Milky Way Galaxy.
It found a total of 473 sources of X-rays detected in an area on the sky only about 3% of the size of the full Moon, one of the highest densities of X-ray sources ever seen in our Galaxy.
More than 80% of the seemingly diffuse ridge of X-ray emission was resolved into individual sources.
These are believed to be mostly white dwarf stars pulling matter from companion stars and double stars with strong magnetic activity that are producing X-ray outbursts or flares that are similar to, but more powerful than the flares seen on the Sun. These stars are unrelated to the large-scale structures seen towards the centre of the Spitzer infrared image, which are probably caused by X-rays from young massive stars.
(Combined photo of 29 April 2009 thanks to infrared frequency data from the NASA/JPL-Caltech/GLIMPSE Team and X-ray data from NASA/CXC/TUM/M.Revnivtsev et al.)
How to build a radio station in Somalia.
How to build a radio station antenna in Somalia.
The Somalia team mount the antenna horizontally in Galkayo, North East Somalia.
Abdikarim Nur Mohamud 6O0W directed the lifting of the Radio Free Somalia antenna (“Free for all to use” known later as Radio Galkayo) at the Galkayo Police station, Galkayo, North East Somalia 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
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