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Showing posts with label shortwave. Show all posts
Showing posts with label shortwave. Show all posts

The Short Wave Magazine

Short Wave Magazine originally appeared in March 1937 and published up to September, 1939 when it closed due to the onset of W.W. II. A second era began  in March of 1943 and continued to 2005 when it was amalgamated with "Radio Active" to become "Radio User".

Link to all issues of the Short Wave Magazine

https://worldradiohistory.com/Short_Wave_UK.htm

Popular Communications


First issue of the publication, September 1982.

Popular Communications magazine, radio hobby, including scanners, shortwave radio, CB, amateur radio, AM and FM broadcast band listening, radio history, and vintage radio restoration.
The magazine existed between 1982 and 2013.

Here is a link where all the publications of the Popular Communications magazine are in pdf format.

Shortwave (SW)

 
Shortwave (SW) radio includes the entire High Frequency (HF) band.

Radio waves in the shortwave band can be reflected or refracted from a layer of electrically charged atoms in the atmosphere called the ionosphere. Therefore, short waves directed at an angle towards the sky can be reflected back to Earth at great distances, beyond the horizon.

Shortwave radio is used for broadcasting of voice and music to shortwave listeners over very large areas; sometimes entire continents or beyond. Other uses include military over-the-horizon radar, diplomatic communication, amateur radio, education, and emergency service, as well as for long-distance aviation and marine communications.
 
Shortwave (SW) frequency range High Frequency (HF)

Band    Frequency Range
120 m   2.3–2.495 MHz
 90 m    3.2–3.4 MHz
 75 m    3.9–4 MHz
 60 m    4.75–5.06 MHz
 49 m    5.9–6.2 MHz
 41 m    7.2–7.6 MHz
 31 m    9.4–9.9 MHz
 25 m    11.6–12.2 MHz
 22 m    13.57–13.87 MHz
 19 m    15.1–15.8 MHz
 16 m    17.48–17.9 MHz
 15 m    18.9–19.02 MHz
 13 m    21.45–21.85 MHz
 11 m    25.6–26.1 MHz

Mediumwave (MW) frequency range Medium Frequency (MF)

530-1.700 Khz

Longwave (LW) frequency range Low Frequency (LF)

148.5–283.5 kHz

Klingenfuss Shortwave Frequency Book

 

For more than 50 years, we have been the world's leading publisher of books and databases for professional shortwave (HF) radio monitoring.

An essential guide with detailed information that cannot be missing in our library dedicated to radio
If you visit their page you will see a lot of information about all their articles and products, I think I am not wrong if I say that it is one of the best sites dedicated for lovers of listening on shortwave frequencies.

Shortwave Antenna

Horizontal wire dipole antennas are popular for use on the HF shortwave bands, both for transmitting and shortwave listening. They are usually constructed of two lengths of wire joined by a strain insulator in the center, which is the feedpoint. The ends can be attached to existing buildings, structures, or trees, taking advantage of their heights. If used for transmitting, it is essential that the ends of the antenna be attached to supports through strain insulators with a sufficiently high flashover voltage, since the antenna's high-voltage antinodes occur there. Being a balanced antenna, they are best fed with a balun between the (coax) transmission line and the feedpoint.

These are simple to put up for temporary or field use. But they are also widely used by radio amateurs and short wave listeners in fixed locations due to their simple (and inexpensive) construction, while still realizing a resonant antenna at frequencies where resonant antenna elements need to be of quite some size. They are an attractive solution for these frequencies when significant directionality is not desired, and the cost of several such resonant antennas for different frequency bands, built at home, may still be much less than a single commercially produced antenna. 

Source: https://en.wikipedia.org/wiki/Dipole_antenna#Shortwave_antenna