• 목록
• 답변
• 글쓰기
• 게시판 리스트 옵션
  • 수정
  • 삭제

The one library that still has a duplicate of the entire 1948 problem is the central library of Amsterdam, and i havent been ready to go to them. It would have been great to have a copy or photo of the leaflet! To my shock and delight the library additionally occurred to include a completely intact copy of Radio Bob. Figure 8 The Radio Bob crystal receiver was even bought as a (sober) kit! The Radio Bob page has been on-line now for some ten years and I thought that I knew as much as may very well be known about it after i found on a forum that there even has been a Radio Bob building package (Figure 8). The package was obviously quite sober since all the pieces was scarce within the post conflict years. The story itself is nothing special and it is even a bit childish. CODE - The worlds first radio detective story? The story of Radio Bob is what we might call, a radio detective story - a narrative in which a radio performed a important function in committing, preventing or fixing of a criminal offense. It derives its charm from the fact that it's one in all the primary detective tales wherein radio plays a central position, soft round wire electric greater than 25 years earlier than Radio Bob was written.

Possibly that is brought on by some oxidization of the contacts of the disks throughout the past 80 years! The W6 and WM26 had the same building, but contained 6 copper disks in collection. The Electronica in Praktijk (Electronics in Practice) sequence gives an excellent impression of the Uniframe idea. It consisted of a series of Aluminum constructing blocks that could be joined together to kind a custom made chassis. Around 1951 Amroh launched its so known as Uniframe chassis building system. In Jongeren Rubriek, a column for youngsters, the working and development of a simple battery tube receiver is mentioned. The subtitle reads n simple toestelletje dat het altijd doet (a simple receiver which all the time works). The title of the article reads We gaan op vakantie en we nemen de radio mee! Obviously this is not so unusual if we consider that throughout the battle which had simply ended, most individuals weren't capable of listen to the radio in any respect. When the war lastly ended, most people not surprisingly though that that they had now seen the final of those crystal-detector gadgets, and so they were only too glad to move on to radio tubes and the newly developed Westectors. This small company sells radio components imported primarily from the U.S.

The inductors were fabricated by Amutronics and offered by AMROH, both sisters of the publishing company de Muiderkring. Together with his brother Jan, he founds the AMerican RadiO House buying and selling firm. However, a while in the past I happened to go to the National Radio-Amateur museum Museum Jan Corver named after the Dutch radio pioneer Jan Corver. Philips was at the moment already one of the main radio tube manufacturers in Europe, so obviously they carefully watched what the competition was doing. In the May/June number of Radio bulletin the primary schematics with the 402 are given. I have tried to search out the primary reference to the 402 in the 1946 edition of Radio Bulletin. Towards the end of the story, on page 60, we find an image of a police man speaking into what seems to me an unlimited black shoo-field. Within the July 1947 variety of Radio Bulletin we find the first description of a crystal-set receiver utilizing the then model-new Mu-Core 402 coil (Fig. 17). Within the article a cats whisker detector is used, but at the end it mentions that additionally a metallic detector can be used which doesn't require any adjustments.

Most initiatives were first printed as a separate booklet, then appeared as an article in Radio Bulletin, and finally have been collected in books like Jongens Radio (Boys Radio). The elements within the equipment look precisely like the elements within the drawings in the e-book! Inductors and coils have all the time been difficult parts for amateurs. So as to overcome this dilemma and so to handle a bigger hobbyist inhabitants, the designers from de Muiderkring designed a lot of common inductors that may very well be used for different purposes and frequency bands in numerous designs. Amutronics manufactures, AMROH distributes and sells, and De Muiderkring promotes all these products though periodicals such as AMROH Bulletin In 1937 the identify AMROH Bulletin is changed to the more neutral Radio Bulletin and in 1940 additionally other firms and firms are allowed to advertise their products in the journal. The 402 was the spine of many dozens of radio designs over a period of more than twenty years.