History of wireless telegraphy and broadcasting in Australia/Topical/Biographies/Robert Ballantyne Caldwell/Notes

3 Robert Ballantyne Caldwell - Transcriptions and notes Key article copies Brief wireless bio of Caldwell in 1929 AMATEUR STATIONS. 5BP — North Unley. OPERATOR R. B. CALDWELL. 5BP experimental wireless station is owned and operated by Mr. R. B. Caldwell, of 53 Hughes street, North Unley. Mr. Caldwell was perhaps the first to experiment in radio in this State, having first taken an active interest in 1902. Mr. Caldwell is president of the Wireless Institute of Australia (South Australian division), and has held that position for a number of years. His first experiments in radio were conducted with coherers and spark transmitters, and experimenting continued until the outbreak of war, when the Commonwealth Government closed all amateur stations. Immediately after the war came to an end he again conducted experiments, this time, however, having the advantage of new apparatus, and principles evolved for wartime communication. As soon as possible a valve was installed. This was a comparatively crude piece of apparatus, with a plate like a 50-watt transmitting tube. The elements were enclosed in a piece of heavy glass tubing. All the condensers, nuts, and bolts and other accessories used on the receiver were made by Mr. Caldwell. The set was mounted on a red-fibre panel. The first radiotelephone transmission picked up by Mr. Caldwell was from a ship visiting Port Pirie. The chief engineer of this vessel bought the transmitter in America, and during the voyage conducted transmissions. Mr. Caldwell's three-coil Armstrong receiver was later also used as a telephone transmitter, and an amateur a few streets away succeeded in picking up the transmission. This was followed by a 10-watt transmitter employing one UX210 valve as an oscillator. Various circuits have been experimented with, and transmissions from this station have been heard all over the State and by numbers of listeners in Victoria and New South Wales. Electrolytic rectifiers are employed, but "S" tubes are (Start Photo Caption) 5BP EXPERIMENTAL RADIO STATION — This station is owned and operated by Mr. R. B. Caldwell, one of the oldest experimenters in radio in this State. Mr. Caldwell is well-known as president of the Wireless Institute of Australia (South Australian Division). He has conducted some interesting tests with television. (End Photo Caption) also available for this purpose. Plate potential is at 500 volts. The receiver employed for 200 metre and broadcast reception uses the well-known tuned anode system. Shortwave reception is performed with an Armstrong three-coil circuit. Shortwave transmission is effected with a loose-couple Hartley arrangement, with one Philips TB04/10 as an oscillator. This transmitter has come into commission only recently, and will shortly be heard to good effect on the 40-metre band. Television is another branch of Mr. Caldwell's activity in the wireless world.http://nla.gov.au/nla.news-article58621663 AMATEUR STATIONS The Mail (Adelaide) 11, 895 South Australia 20 July 1929 13 April 2025 28 National Library of Australia Non-chronological material 1900s 1900 1900 01 1900 02 1900 03 1900 04 1900 05 1900 06 1900 07 1900 08 1900 09 1900 10 1900 11 1900 12 1901 1901 01 1901 02 1901 03 1901 04 1901 05 1901 06 1901 07 1901 08 1901 09 1901 10 1901 11 1901 12 1902 1902 01 1902 02 1902 03 1902 04 1902 05 1902 06 1902 07 1902 08 1902 09 1902 10 1902 11 1902 12 1903 1903 01 1903 02 1903 03 1903 04 1903 05 1903 06 1903 07 1903 08 1903 09 1903 10 1903 11 1903 12 1904 1904 01 1904 02 1904 03 1904 04 1904 05 1904 06 1904 07 1904 08 1904 09 1904 10 1904 11 1904 12 1905 1905 01 1905 02 1905 03 1905 04 1905 05 1905 06 1905 07 1905 08 1905 09 1905 10 1905 11 1905 12 1906 1906 01 1906 02 1906 03 1906 04 1906 05 1906 06 1906 07 1906 08 1906 09 1906 10 1906 11 1906 12 1907 1907 01 1907 02 1907 03 1907 04 1907 05 1907 06 1907 07 1907 08 1907 09 1907 10 1907 11 1907 12 1908 1908 01 1908 02 1908 03 1908 04 1908 05 1908 06 1908 07 1908 08 1908 09 1908 10 1908 11 1908 12 1909 1909 01 1909 02 1909 03 1909 04 1909 05 1909 06 1909 07 1909 08 1909 09 1909 10 1909 11 1909 12 1910s 1910 1910 01 1910 02 1910 03 1910 04 1910 05 1910 06 1910 07 1910 08 1910 09 1910 10 1910 11 1910 12 1911 1911 01 1911 02 1911 03 1911 04 1911 05 1911 06 1911 07 1911 08 1911 09 1911 10 1911 11 1911 12 1912 1912 01 1912 02 1912 03 1912 04 1912 05 1912 06 1912 07 1912 08 1912 09 1912 10 1912 11 1912 12 1913 1913 01 1913 02 1913 03 1913 04 1913 05 1913 06 1913 07 1913 08 1913 09 1913 10 1913 11 1913 12 1914 1914 01 1914 02 1914 03 1914 04 1914 05 1914 06 1914 07 1914 08 1914 09 1914 10 1914 11 1914 12 1915 1915 01 1915 02 1915 03 1915 04 1915 05 1915 06 1915 07 1915 08 1915 09 1915 10 1915 11 1915 12 1916 1916 01 1916 02 1916 03 1916 04 1916 05 1916 06 1916 07 1916 08 1916 09 1916 10 1916 11 1916 12 1917 1917 01 1917 02 1917 03 1917 04 1917 05 1917 06 1917 07 1917 08 1917 09 1917 10 1917 11 1917 12 1918 1918 01 1918 02 1918 03 1918 04 1918 05 1918 06 1918 07 1918 08 1918 09 1918 10 1918 11 1918 12 1919 1919 01 1919 02 1919 03 1919 04 1919 05 1919 06 1919 07 1919 08 1919 09 1919 10 1919 11 1919 12 1920s 1920 1920 01 1920 02 1920 03 1920 04 1920 05 1920 06 1920 07 1920 08 1920 09 1920 10 1920 11 1920 12 1921 1921 01 1921 02 1921 03 1921 04 1921 05 1921 06 1921 07 1921 08 1921 09 1921 10 1921 11 1921 12 1922 1922 01 1922 02 1922 03 1922 04 1922 05 1922 06 1922 07 WIA SA meeting report, Caldwell issues a rally cry on broad range of licensing issues WIRELESS INSTITUTE. At the last meeting of the Wireless Institute of Australia (South Australia division), Mr. Clark presiding. Mr. Carter gave an excellent and highly interesting lecture on the "Telephone receiver." He dealt with the development, the principle, and construction of this instrument so essential to the receiving apparatus. Mr. Spurrier spoke on the construction of an electrolytic rectifier and high tension battery. He dealt mainly with his own experiences. The President congratulated the speakers, who were accorded a hearty vote of thanks. Mr. Caldwell urged all members to pull together. In the state of New York, U.S.A., he said there are upwards of 200,000 experimenters. They are allotted, and tuned to, a wave length of 200 metres. He emphasised the need for a reduction of license fee (£2), the abolition of valve licenses, and a wave of 200 metres length, wherewith to experiment. The only way to obtain these requests, he said, was to draw up a schedule of information for the enlightenment of those responsible for the regulations now in force.http://nla.gov.au/nla.news-article210610820 WIRELESS INSTITUTE The Express And Telegraph LIX, 17,694 South Australia 25 July 1922 5 April 2025 1 (5 O'CLOCK EDITION) National Library of Australia As previous but with significant additional detail WIRELESS INSTITUTION OF AUSTRALIA. A meeting of the South Australian division of the above institute was held in the Y.M.C.A., and Mr. Clark (President) occupied the chair. Mr. Carter gave an interesting lecture on the "Telephone receiver," dealing with the development, the principle and construction of this instrument so essential to the receiving apparatus. Mr. Spurrier spoke on the construction of an electrolytic rectifier and high tension battery. He dealt mainly with his own experiences, which provided a valuable store of information for those present. The secretary read a paragraph which set forth the attitude of the Amalgamated Wireless towards radio experimenters. One of the members, Mr. Caldwell, who is the resident engineer for the South Australian Railways, spoke strongly on the subject. He urged all members to pull together in order to resist any attempts by a private concern to hinder the progress of the amateur. In the State of New York, U.S.A., there were more than 200,000 experimenters, licenced by the Government, and enjoying privileges undreamt of by Australian amateurs, and yet they did not cause any interferences. They were allotted, and tuned to a wave length of 200 metres. Mr. Caldwell emphasized the need for the reduction of the licence fee (£2); the abolition of valve licences; and a wave of 200 metres length for experimental work. He said the only way to have those requests granted was to draw up a schedule of information for the enlightenment of those responsible for the drastic regulations now in force.http://nla.gov.au/nla.news-article63917874 WIRELESS INSTITUTION OF AUSTRALIA. The Register (Adelaide) LXXXVII, 25,453 South Australia 26 July 1922 5 April 2025 10 National Library of Australia 1922 08 1922 09 1922 10 1922 11 WIA SA meeting report, Caldwell does a show-and-tell with his receiver and loop antenna, tunes in several ship and coastal stations WIRELESS INSTITUTE. The monthly meeting was held in the Y.M.C.A. Buildings on Wednesday. The President (Mr. Hambly Clarke) occupied the chair and there was a large attendance. Three new members were admitted. Future meetings will be held at the University, as the result of a generous offer by Professor Kerr-Grant. The lecturer for the evening was Mr. Caldwell, who had brought his complete valve-receiving set with a loop aerial. In a few minutes Mr. Caldwell succeeded in "tuning in" several ship and coastal commercial stations. He explained the workings of the set, and showed the diagram of the circuit employed. An interesting discussion was introduced by Mr. E. S. King on the method of receiving by means of the electric light socket and ordinary house wiring. Mr. Caldwell was thanked for his instructive discourse.http://nla.gov.au/nla.news-article63745100 WIRELESS INSTITUTE. The Register (Adelaide) LXXXVII, 25,540 South Australia 4 November 1922 5 April 2025 10 National Library of Australia 1922 12 1923 1923 01 1923 02 1923 03 1923 04 1923 05 1923 06 1923 07 1923 08 1923 09 1923 10 1923 11 1923 12 1924 1924 01 1924 02 1924 03 1924 04 1924 05 1924 06 1924 07 1924 08 1924 09 1924 10 1924 11 1924 12 1925 1925 01 1925 02 1925 03 1925 04 1925 05 1925 06 1925 07 1925 08 1925 09 1925 10 1925 11 1925 12 1926 1926 01 1926 02 1926 03 1926 04 1926 05 1926 06 1926 07 1926 08 1926 09 1926 10 1926 11 1926 12 1927 1927 01 1927 02 1927 03 1927 04 1927 05 1927 06 1927 07 1927 08 1927 09 1927 10 1927 11 1927 12 1928 1928 01 1928 02 1928 03 1928 04 1928 05 1928 06 1928 07 1928 08 1928 09 1928 10 1928 11 1928 12 1929 1929 01 1929 02 1929 03 1929 04 1929 05 1929 06 1929 07 Brief wireless bio of Caldwell in 1929 AMATEUR STATIONS. 5BP — North Unley. OPERATOR R. B. CALDWELL. 5BP experimental wireless station is owned and operated by Mr. R. B. Caldwell, of 53 Hughes street, North Unley. Mr. Caldwell was perhaps the first to experiment in radio in this State, having first taken an active interest in 1902. Mr. Caldwell is president of the Wireless Institute of Australia (South Australian division), and has held that position for a number of years. His first experiments in radio were conducted with coherers and spark transmitters, and experimenting continued until the outbreak of war, when the Commonwealth Government closed all amateur stations. Immediately after the war came to an end he again conducted experiments, this time, however, having the advantage of new apparatus, and principles evolved for wartime communication. As soon as possible a valve was installed. This was a comparatively crude piece of apparatus, with a plate like a 50-watt transmitting tube. The elements were enclosed in a piece of heavy glass tubing. All the condensers, nuts, and bolts and other accessories used on the receiver were made by Mr. Caldwell. The set was mounted on a red-fibre panel. The first radiotelephone transmission picked up by Mr. Caldwell was from a ship visiting Port Pirie. The chief engineer of this vessel bought the transmitter in America, and during the voyage conducted transmissions. Mr. Caldwell's three-coil Armstrong receiver was later also used as a telephone transmitter, and an amateur a few streets away succeeded in picking up the transmission. This was followed by a 10-watt transmitter employing one UX210 valve as an oscillator. Various circuits have been experimented with, and transmissions from this station have been heard all over the State and by numbers of listeners in Victoria and New South Wales. Electrolytic rectifiers are employed, but "S" tubes are (Start Photo Caption) 5BP EXPERIMENTAL RADIO STATION — This station is owned and operated by Mr. R. B. Caldwell, one of the oldest experimenters in radio in this State. Mr. Caldwell is well-known as president of the Wireless Institute of Australia (South Australian Division). He has conducted some interesting tests with television. (End Photo Caption) also available for this purpose. Plate potential is at 500 volts. The receiver employed for 200 metre and broadcast reception uses the well-known tuned anode system. Shortwave reception is performed with an Armstrong three-coil circuit. Shortwave transmission is effected with a loose-couple Hartley arrangement, with one Philips TB04/10 as an oscillator. This transmitter has come into commission only recently, and will shortly be heard to good effect on the 40-metre band. Television is another branch of Mr. Caldwell's activity in the wireless world.http://nla.gov.au/nla.news-article58621663 AMATEUR STATIONS The Mail (Adelaide) 11, 895 South Australia 20 July 1929 13 April 2025 28 National Library of Australia 1929 08 1929 09 1929 10 1929 11 1929 12 1930s 1930 1930 01 1930 02 1930 03 1930 04 1930 05 1930 06 1930 07 1930 08 1930 09 1930 10 1930 11 1930 12 1931 1931 01 1931 02 1931 03 1931 04 1931 05 1931 06 1931 07 1931 08 1931 09 1931 10 1931 11 1931 12 1932 1932 01 1932 02 1932 03 1932 04 1932 05 1932 06 1932 07 1932 08 1932 09 1932 10 1932 11 1932 12 1933 1933 01 1933 02 1933 03 1933 04 1933 05 1933 06 1933 07 1933 08 1933 09 1933 10 1933 11 1933 12 1934 1934 01 1934 02 Brief bio of Caldwell at the time of his retirement RAILWAY ENGINEER RETIRES. Mr. R. B. Caldwell's Career. Mr. R. B. Caldwell, who retired yesterday from the position of resident engineer in the Adelaide division of the South Australian railways, started work with the Irrigation Department in 1887. A few years later he became assistant to Mr. Oliver Rogers in the Engineer-in-Chiefs Department, and was connected with the construction of the Beetaloo waterworks, the Barossa dam, and the Outer Harbor. In 1909 Mr. Caldwell entered the railway service, and after some years on construction works, which included the bridge over the Port River, the Hilton overway bridge, and the Mile-End freight yard, he was appointed resident engineer for the Mile-End district, which position he occupied until Mr. W. A. Webb, the then Railways Commissioner, altered the system of control in 1923. From then he occupied the position of assistant superintendent, maintenance, on the Adelaide division, until 1932, when he became resident engineer of the same district. Mr. Caldwell was one of the pioneers in the use of arsenic for the poisoning of weeds on railway tracks, and developed the mechanical poison mixing train, which has saved much money in the application of poison on the South Australian railways. He has taken a practical interest in wireless, and later television, and was one of the first amateur broadcasters in South Australia. For many years he was president of the South Australian division of the Wireless Institute, and later became Federal president. Mr. Caldwell was one of the first to drive a motor car in this State, and is a keen amateur mechanic. His workshop at his residence, in Hughes street, North Unley, is particularly well equipped. He will be given a luncheon today by officers of the department.http://nla.gov.au/nla.news-article74095788 RAILWAY ENGINEER RETIRES The Advertiser (Adelaide) 16 February 1934 12 April 2025 25 National Library of Australia 1934 03 1934 04 1934 05 1934 06 1934 07 1934 08 1934 09 1934 10 1934 11 1934 12 1935 1935 01 1935 02 1935 03 1935 04 1935 05 1935 06 1935 07 1935 08 1935 09 1935 10 1935 11 1935 12 1936 1936 01 1936 02 1936 03 1936 04 1936 05 1936 06 1936 07 1936 08 1936 09 1936 10 1936 11 1936 12 1937 1937 01 1937 02 1937 03 1937 04 1937 05 1937 06 1937 07 1937 08 1937 09 1937 10 1937 11 1937 12 1938 1938 01 1938 02 1938 03 1938 04 1938 05 1938 06 1938 07 1938 08 1938 09 1938 10 1938 11 1938 12 1939 1939 01 1939 02 1939 03 1939 04 1939 05 1939 06 1939 07 1939 08 1939 09 1939 10 1939 11 1939 12 1940s 1940 1940 01 1940 02 1940 03 1940 04 1940 05 1940 06 1940 07 1940 08 1940 09 1940 10 1940 11 1940 12 1941 1941 01 1941 02 1941 03 1941 04 1941 05 1941 06 1941 07 1941 08 1941 09 1941 10 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