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1<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
2     "">
3<html xmlns="" xml:lang="en">
4<head><!--#set var="title"        value="Broadcasting"
5   --><!--#set var="location"     value="rundfunk"
6   --><!--#set var="part"         value="communication"
7   --><!--#set var="url_de"       value="kommunikationstechnik/rundfunk.shtm"
8   --><!--#set var="prev"         value="../"
9   --><!--#set var="prev_title"   value="Start"
10   --><!--#set var="next"         value="sound_technology.shtm"
11   --><!--#set var="next_title"   value="Sound recording and reproducing technology"
12 --><title>Technikum29 - <!--#echo var="title" --></title>
14    <!--#include virtual="/en/inc/" -->
15    <meta name="keywords" lang="de" content="Rundfunk, Signalbau Huth, E 72, Telefunken W9, K&ouml;rting Ultramar, Telefunken 650, Kofferempf&auml;nger, Metz" />
16    <meta name="keywords" lang="en" content="Broadcasting, broadcast devices, museum, Signalbau Huth, Telefunken W9, K&ouml;rtng Ultramar, Telefunken 650, Metz" />
17    <meta name="DC.Title" content="technikum29 - <!--#echo var="title" -->" />
18    <meta name="t29.SVN" content="$Id: broadcasting.shtm 123 2009-11-11 22:56:33Z heribert $" />
19    <meta name="t29.germanoriginal" content="v5.8.x/10.2008" />
20    <meta name="t29.thistranslation" content="v5.8.x+1/12.10.2008" />
21    <meta name="t92.comment" content="New: Telefunken 650 GK" />
22    <!--changelog: 19.04.2006/v5.5.BETA - last edit own translation -->
23    <!--changelog: 10.08.2006/v5.5.7 - new translation (Ulmann) -->
24    <!--changelog: 19.08.2007/v5.7.5 - new translation, new structure [v5.7 grundlegende Änderungen, weitgehend gleicher Text] -->
25    <!--changelog: 21.03.2008/v5.7.20 based on 03.02.2008/v5.7.17: Neuer Auschnitt Rundfunkecke (Text angepasst, neues Bild) -->
28<!--#echo encoding="none" var="heading" -->
29<div id="content">
30    <h2><!--#echo var="title" --></h2>
32    <div class="box center">
33        <img src="/shared/photos/kommunikationstechnik/neuer-ausschnitt-rundfunkecke.jpg" alt="Photography from the museum: A partial view of the broadcasting corner" width="594" height="418" />
34        <p class="bildtext-bildbreite" style="width:594px;">
35            Som of the broadcast devices in the exhibition &ndash; from left to right:
36            the twenties, early thirties, mid-thirties, late thirties,
37            early fifties.
38        </p>
39    </div>
41    <!--<div class="box left">
42        <img src="/shared/photos/kommunikationstechnik/ausschnitt-rundfunkecke.jpg" alt="Partial view of the broadcasting corner" height="297" width="396" class="nomargin-bottom" />
43        <div class="bildtext" style="padding-top: 127px;">Some of the broadcast
44            devices in the exhibition &ndash; shown are mostly receivers from the
45            1920s and 1930s.</div>
46        <div class="clear">&nbsp;</div>
47    </div>-->
49    <p>It is astonishing to see the incredible pace at which the development of
50       broadcasting systems took place. Beginning with very simple devices using
51       crystals for demodulation the technology matured very fast and resulted
52       in the design and development of high performance transmitters and receivers
53       employing super heterodyning and the like.
54       This paved the way from simple crystal receivers which required special
55       skills to operate to everyday radios which were easy to operate and soon
56       could be found in nearly every household. A process which took a mere 15
57       years from its first steps to near perfection.
58       This development is reflected in the appearance of the devices as well. While
59       the first receivers were of a very technical design, later devices turned into
60       wonderful pieces of furniture, fitting neatly into the average household and
61       denying the fact that the receiver itself was a rather complicated piece of
62       equipment. This page shows some selected examples from the collection of the
63       museum which contains about 150 different receivers.
64    </p>
67      <p>The short time between the moderate launch of broadcasting in the early 1920s and its perfection is amazing. The era of broadcasting began in Germany in 1923, at first with very limited reception quality. 15 years later the quality of reception was almost perfect. At the beginning the apparatures had a very technical design (exactly like today), but since the 30s the radio apparatures changed to partially attractive pieces of furniture. Chosen examples from the museum-holding (150 pieces) for both kinds are shown on this page.</p>
70      <div class="box center">
71          <img src="/shared/photos/kommunikationstechnik/huth.jpg" width="600" height="385" alt="HUTH-Empf&auml;nger (HUTH-Receiver)" />
72          <p class="bildtext">Receiver made by Signalbau Huth (model E72):
73            This is an example of a cheap
74            receiver made in 1928. It was one of the first models which could
75            be connected to the mains thus eliminating the bulky anode batteries
76            requires by previous generations of receivers.
77            The sound quality of this receiver is quite limited and the horn
78            loudspeaker makes for a sound which one would expect from a tin can.</p>
79      </div>
81      <div class="box left">
82         <img src="/shared/photos/kommunikationstechnik/telefunken_w90.jpg" width="307" height="371" alt="Telefunken W9" class="nomargin-bottom" />
83         <p class="bildtext">Wealthy people could afford a <b>Telefunken W9</b>
84           (shown in the picture on the left) which was available during the
85           same time frame. Equipped with an Acrophon loudspeaker it featured
86           a rich sound although with very limited bass. In addition to this
87           the receiver was quite sensible and could even receive stations
88           far away while the cheap model above was limited to the reception
89           of local broadcast stations.</p>
90         <div class="clear">&nbsp;</div>
91      </div>
93      <p>There have always been devices that have been built very aesthetically.
94        One of these devices is the Telefunken T 40W.</p>
96      <div class="box left">
97         <a href="/en/devices/telefunken_t40w.shtm"><img src="/shared/photos/kommunikationstechnik/telefunken_t40w/klein.jpg" alt="Photography of the Telefunken T40W" class="nomargin-bottom"></a>
98         <p class="bildtext">
99            Clicking on the picture yields the
100            innards of the <a href="/en/devices/telefunken_t40w.shtm" class="go">Telefunken
101            T 40W</a>.
102         </p>
103         <div class="clear">&nbsp;</div>
104      </div>
108      <p>The following pictures show some receivers of outstanding design
109         and outstanding technical properties. Apart from these the
110         museum's collection contains a lot of different receivers
111         covering all stages of the development of public radio
112         broadcasting.
113         These receivers include crystal radios, battery powered receivers
114         from the 1920s, a 'Luxus Super' (1930s) as well as the first postwar
115         receiver equipped with motorized search functionality and remote
116         control by cable, the SABA Freiburg 3D. The sound of this receiver
117         is so rich and impressive that even young people are faszinated and
118         admire this 50 year old technical miracle.</p>
120      <div class="box left">
121          <!-- Section new at 12.10.2008 from de -->
122          <img src="/shared/photos/kommunikationstechnik/telefunken,musikschrank.jpg" width="350" height="610" alt="Telefunken radiogramophone" />
123          <p class="bildtext">
124              Having intelligent all-in-one furniture suitable for all kinds of music is an old dream
125              which appeared some years after the introducion of mass broadcasting. The radiogramophone
126              on the left is the <b>Telefunken 650 GK</b> from 1931/32. The record player was quite
127              modern, featuring a magnetic system and electric motor. On the other hand it still used
128              gramophone needles and the needlessly weighty pick-up stressed the records.
129              Nevertheless the sound quality of the radiogramophone was much better, compared to an
130              ordinary gramophone player. The chassis is made out of noble walnut trees, therefore
131              this piece of furniture was very expensive.
132              <br />The <a class="go"
133              name="backlink-telefunken" href="/en/devices/telefunken_650.shtm">Telefunken 650</a>
134              is the alternative table-top type and was a very successful export hit.
135          </p>
136          <div class="clear">&nbsp;</div>
137      </div>
141      <p>The next two pictures show two apparatures that point out themselves optically and also technically, but the picture gallery could be continued without stopping.
142      <br />Many other curiosities can be admired in the museum, an audio experience is possible in every epoch: detectors, batterie-receivers (1920s), "Luxus-Super" (1930s) and at the end the first postwar receivers with motor-channel search and cable-remote control: SABA Freiburg 3D. The sound of this milestone with 5 built-in loudspeakers is so impressing that even CD-spoiled kids would stand wondering in front of this nearly 50-years old apparature.
143      <br />All in all you see how broadcasting was two or three generations ago and how fast the aparatures developed.</p>
146      <div class="box center">
147          <img src="/shared/photos/kommunikationstechnik/ultramar3.jpg" width="600" height="533" alt="K&ouml;rting Ultramar" />
148          <p class="bildtext"><b>K&ouml;rting Ultramar</b>: One of the most
149            nobel, most complex and most expensive recievers made in 1935.
150            Its circuitry contains 11 vacuum tubes driving two loudspeakers
151            which results in an astonishable quality of sound. See also
152            some pictures showing the
153            <a class="go" name="backlink-ultramar" href="/en/devices/ultramar_back.shtm">Innards of the Ultramar</a>.
154      </div>
156      <div class="box left">
157          <img src="/shared/photos/kommunikationstechnik/metz,koffer.jpg" width="400" height="333"
158             alt="Metz portable reciever" class="nomargin-bottom" />
159          <p class="bildtext">The portable reveceiver from Metz, built in
160            1956 and shown above, is another outstanding piece of equipment.
161            It is a so called "Kofferradio" so it can be carried around and
162            it features even an integrated recordplayer - forseeing the
163            development of modern multipurpose receiver/CD-player combinations</p>
165          <!--
166          A rapid leap in time to the youngest model in the museal collection: The portable receiver from Metz with built-in gramophone. Of course the apparature, built 1956, still uses tubes. Youth would have been able to hear their "Elvis Presley"-records in the swimming pool if the radio were much more cheaper.-->
167          <div class="clear">&nbsp;</div>
168      </div>
171</div><!-- end of content -->
172<!--#include virtual="/en/inc/" -->
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