![]() The Silvertone keyboard was used in almost every R/C club in Australia and was finally declared the Australian National Standard Frequency Control System until the introduction of 2.4GHz sets rendered any form of frequency control unnecessary. Silvertone's answer to this dilemma was to develop the Silvertone Keyboard, a device that can safely control the simultaneous use of radio control systems of differing bandwidths. The old peg-on transmitter system proved to be totally inadequate and actually unsafe in this situation. The first problem was how to take advantage of the narrow band feature of the Mark VII, whilst maintaining safe operation for older and wider (40-50kHz) systems. From a club point of view, the introduction of narrow band operations (from 50kHz down to 15kHz, increasing available frequencies from 6 to 18 frequency slots) completely revolutionised club R/C operations in Australia. The narrow band feature presented clubs with some interesting problems and opportunities which they had never encountered before. The Mark VII ushered in a new era in Australian R/C operations. The Mark VII was the first Australian R/C system to feature narrow band spacing, frequency interlock and dual control. A very advanced system for its time, it was the first Australian R/C system to be written up in International magazines. The Mark VII was particularly well received in the USA, receiving an excellent review in RCM magazine. The Silvertone Mark VII system was introduced in 1969. ![]() The aircraft shown set the first Australian R/C speed record of 133mph. Uncomfortable and difficult to use at first, the chair proved to be quite successful eventually, especially on twin engine models. Utilising a Silvertone Mark 1 proportional transmitter, the "flying-chair" was actually a prototype dual control (buddy box) system with the chair control pots wired directly into the encoder. The late 1960s and early 1970s were the first of several peak periods in Silvertone creativity. In 1971 Bob Young along with Brian Green formed the first Australian team to fly in the World Aerobatic championships. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |