Websiden om gammel radiolitteratur.
Website about old radio literature.
Jeg har samlet på gammel radiolitteratur i mange år og jeg synes selv, det er blevet en god og interessant samling. På websiden fortæller jeg i store træk hvad der indgår i samlingen, og derudover har jeg lagt nogle udpluk fra nogle gamle bøger og tidsskrifter på siden for at fortælle lidt om teknikken, der blev anvendt i de "gode gamle dage".
Du kan starte ved indholdsfortegnelseneller gå direkte til de danske sider ved at klikke her.
Dansk senderamatørhistorie: ARRL's breve til James Steffensen, ex - ed7JS - 2Q.
I have for many years collected old radio literature and I think it has grown to be a good and interesting collection. On this website I'm telling you a bit about what is contained in my collection and in addition I have published abstracts from some of the old books and magazines to show the technique which was used in "the good old days"
NEW: Schematics of old German radio receivers.
You can start at the index or jump directly to the English pages by clicking here.
J'ai aussi une petite section française.
Hvis du har gamle tyske eller amerikanske radiotidsskrifter du
vil sælge, så kontakt mig.
If you have old German or American magazines for sale, please contact me.
Jag är också intresserad av Populär Radio från trettiotalet.
I call for information about old radio
magazines in other countries - the name - when it was published (from month/year
- to month/year) - the publisher and other interesting information.
I will place all the information on my web-site.
Write me, please.
Gorm.
In the book 'Wireless' from 1924, P. J. Wisdon wrote:
"CRYSTAL CIRCUITS WHICH AMPLIFY. Mention should here be made of an invention of M. Lossev, of Nijni-Novgorod, who discovered that, in addition to rectifying properties, certain crystal combinations will function as amplifiers within a limited range. Several combinations have been found to possess this property, one being zincite used in conjunction with a steel point. It must not, of course, be supposed that the crystal itself magnifies it merely serves, as a valve functions, to impress fluctuations in received oscillations on an electric current. A battery is therefore essential, to provide a source of electrical energy. Instead, however, of having to employ a high-tension battery, a low-tension battery of a few volts is all that is necessary. The further development of this discovery may revolutionize broadcast reception, for the small first cost of a crystal, as compared with that of a valve, and the advantage of low-tension as against high-tension batteries, must instantly appeal to everybody interested in the art of wireless."
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Opdateret 18. oktober
2011.