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Thursday, 20 November 2014

160) The “25 Euro Silver-Niobium Coin Series" (iii): 2003 onwards minted by the Austrian Mint:The third coin in the series: “50 Years of Television in Austria” (2005):



160) The “25 Euro Silver-Niobium Coin Series (iii): 2003 onwards minted by the Austrian Mint by using Niobium and Niobium metal insertion technology for the first time anywhere in the World of Numismatics:

iii)The third coin in the series: “50 Years of Television in Austria” (2005):

Television was introduced in Austria in 1956.

Until the end of 1960s, television was a prime source of entertainment for many people who would gather around a television set in pubs and other public places.

Families would gather at a neighbour’s house, especially if they had a large TV set and later on Colour TV sets, which stole a march over the black & white TV sets. It was considered prestigious to own a TV set and a kind of status symbol.

Several forms of entertainment were made for TV shows and sports which were hitherto broadcast over radios & transistors could now be watched live through a television broadcast. Some shows broadcast at fixed times, particularly serial soaps, became an everyday affair for Austrians, like in many other countries.

The TV sets and TV Programmes and news reporting have come a long way from the early days and watching TV is a favourite pastime for the majority of the Austrians, much like in other countries.

The Silver-Niobium coin titled “50 Years of Television in Austria”:

On the Obverse of the coin is shown the original 1950s Austrian TV test card, which was used for calibration and focussing at the beginning of the broadcasting day and then again just prior to the broadcaster signing off at the end of the day. The test pattern is considered to be a classic of retro design in Austria today.  This engraving features on the niobium core of the coin which is coloured in purple.

The name of the country “Republik Osterreich” is inscribed on the upper periphery. Interestingly, the country name and face value of the coin “25 Euro” are shown in its outer silver ring. The year of issues “2005” is mentioned towards the bottom of the niobium core.
 On the Reverse of the coin are shown, milestones in the history of television – ranging from an analogue 1950s TV set (the past) to contemporary digital satellite dishes (the present) are depicted in the silver ring. The inscription “50 Jahre Fernsehen” in German (meaning “50 years of television”) is placed on the lower right hand periphery.

In between are shown a television camera from the 1970s, a family of three switching on/surfing their TV set with a remote, and a control room of a TV broadcasting station manned by personnel at work, all in the silver outer ring. An old-fashioned TV antenna superimposed over the European section of the globe is depicted in the niobium core.

The specifications of the coin are:

Face value: 25 Euros; Metallic composition: Outer ring: Silver (Ag) 900 – 9 gms, Niobium 998 – 6.50 gms; Diameter: 34 mm; Weight: 16.50 gms; Edge: smooth.

The mintage of this coin was limited to a maximum of 65000 pieces.

Test card:

A test card (also known as a test pattern) is a television test signal, which was broadcast when the TV transmitter would go live, but before broadcasting any programmes. These cards were used since the earliest TV broadcasts and were originally physical cards at which a television camera was pointed for calibration, alignment and matching of cameras and camcorders.

Test patterns used for calibrating or troubleshooting the downstream signal path are nowadays mostly generated by test signal generators, which do not depend on correct configuration and presence of a camera. Digitally generated cards allow vendors, viewers and television stations to adjust their equipment for optimal functionality.

Modern microcontroller-controlled analogue televisions rarely, if at all, need adjustment, therefore test cards are no longer an important feature of start of day operations for a TV Broadcasting station. Also, the use of digital broadcasting standards eliminates the requirement of a Test Card.

Analog television: Analog(ue) television is an Analogue transmission which involves broadcasting of encoded Analogue audio and analog video signals. The information to be transmitted i.e. the brightness, colours and the sound are represented by rapid variations of either the amplitude, frequency or phase of the signal.

Analogue signals vary over an infinite number of possible values which means that the electronic noise and interference becomes reproduced by the receiver. Thus, with analog, a weak signal becomes snowy and subject to interference. In contrast, a moderately weak signal and a very strong digital signal transmit equal picture quality.

All broadcast systems preceding digital transmission of digital television (DTV) used analogue signals. Analogue television can be wireless or can be distributed over a cable network using cable converters.

The earliest mechanical televisions were not very successful till the introduction of the Cathode – Ray tubes (CRT) introduced.

Broadcasters using analog television systems encoded their signal using the American NTSC (National Television Systems Committee), the European/Australian PAL (Phase Alternation Line Rate), or the French/Soviet Union SECAM (Sequential Couleur Avec Memoire) analog coding and then use RF modulation to modulate this signal onto a Very High Frequency (VHF) or Ultra High Frequency (UHF) carrier.

The first commercial television systems were black and white and colour television started only in the 1950s.

Subsequently, the Cathode – Ray Tube (CRT) technology superseded the earlier transmission/broadcasting systems in which an image is displayed on the TV screen by scanning a beam of electrons across the screen in a pattern of horizontal lines one by one, known as a Raster.

A colour television is identical except that it has an additional signal known as chrominance controls the colour of the spot.

Plasma screens and LCD screens are also used in analogue television sets. These types of display screens use lower voltages than the older CRT displays.

Many dual system television receivers are equipped to receive both analog transmissions and digital transmissions and have analogue tuner receiving capabilities, but these must use an antenna.

From 2009 onwards, several countries replaced their analogue terrestrial broadcasting to digital over-the-air (terrestrial television) broadcasting. The digital television transition is also called the digital switchover or analogue switch-off, which is a process in which analogue television broadcasting is converted to and replaced by digital television. Austria converted to this technology in 2011.

Satellite dish: A satellite dish is a type of parabolic antenna designed to receive electro-magnetic signals from satellites, which transmit data transmissions or broadcasts, such as satellite television. Satellite dishes are of several types:

i)             Motor driven: mounted on a pole and driven by a stepper motor or a servo & can be controlled or rotated to face any satellite position in the sky. Motor-driven dishes are popular with enthusiasts.

ii)           Multi satellite: These designs enable simultaneous reception from multiple different satellite positions without repositioning the Dish. The vertical axis operates as an off-axis concave hyperbolic Cassegrain reflector, while the horizontal axis operates as a concave convex Cassegrain. The mechanism corrects astigmatism by its varying curvature.

iii)          VSAT:  This is a Very Small aperture terminal which provides two way satellite internet communications for both consumers and private networks for organisations.

iv)         DTH: These are individual dishes serving one house.

v)           SMATV: These are collective Dishes shared by several houses.

vi)         CABD: This is a Communal Antenna Broadcast Distribution for an entire Community.



The following coins have been issued in this Series:

2003 – 700 years old city hall in Tyrol or Tirol.

2004 – 150 years Semmering Alpine Railway

2005 – 50 years of Television

2006 – The European Satellite Navigation

2007 – Austrian Aviators

2008 – Fascinating light

2009 – Year of astronomy

2010 – Renewable Energy Sources.

2011 – Robotics

2012 – Bionics

2013 – Drilling tunnels

2014 - Evolution
2015 - Cosmology






Links:

1) The 25 Euro Silver-Niobium Coin series issued by the Austrian Mint: First coin  featuring "700 years of Hall City in Tyrol"

2) The 25 Euro Silver-Niobium Coin Series issued by the Austrian Mint: Second coin featuring "150 years of the Semmering Alpine Railway"

3) The 25 Euro Silver-Niobium Coin series issued by the Austrian Mint: Fourth coin in the series featuring "European Satellite Navigation System"

4) The 25 Euro Silver-Niobium Coin series issued by the Austrian Mint: Fifth coin featuring "Austrian Aviators"

5) The 25 Euro Silver-Niobium Coin Series issued by the Austrian Mint: Sixth Coin: "Fascinating Light"

6) The 25 Euro Silver-Niobium Coin Series issued by the Austrian Mint : Seventh Coin: " The International Year of Astronomy"

7) The 25 Euro Silver-Niobium Coin Series issued by the Austrian Mint: Eighth Coin: "Renewable Energy"

8) The 25 Euro Silver-Niobium Coin Series issued by the Austrian Mint : Ninth Coin: "Robotics"

9) The 25 Euro Silver-Niobium Coin Series issued by the Austrian Mint : Tenth Coin: "Bionics"

10) The 25 Euro Silver-Niobium Coin Series issued by the Austrian Mint: Eleventh Coin: "Tunnel Construction"

11) The 25 Euro Silver-Niobium Coin series issued by the Austrian Mint: Twelfth Coin: "Evolution"

12) The 50 Euro Gold Coin Series issued by the Austrian Mint: Klimt & his Women: 2012-2016" (includes Coin of the Year 2015 - COTY)

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