The Norwegian Historical Radio Society

by Anthony Charles Thomas

Welcome to our web site, this is my attempt at writing a few lines about my membership in a radio club situated in a colder part of Northern Europe. NRHF as it is called in Norwegian is situated in Oslo, however I live midway between Bergen and Trondheim out on the coast near a place called Ålesund. The club has drop in meetings nearly every Tuesday, field days are as often as possible but usually 2-3 times a year. We also have auctions at the clubhouse a couple of times a year. Being situated minutes from Ålesund it would entail a days drive each way to participate at a club meeting, 16 + hours of driving. Thank goodness we have Internet!

The aim of our club is to preserve radio equipment that has or will have a historical interest for future generations. During W.W. II a lot of fortifications were built in Norway, these were equipped with electronic equipment which was indeed cutting edge technology at the time. Even today some of these items turn up occasionally and are extremely valuable, fetching high prices at auctions. Since the W.W.II fortifications in Norway were almost exclusively equipped with equipment of German manufacture, many radio amateurs cut their teeth on just such “Army / forces Surplus equipment.”
I believe that even today many relics from W.W.II are still awe-inspiring in their concept and construction, where else have you seen 4 and 6 ganged variable capacitors geared together with almost zero backlash in their drive systems?

After W.W.II British and US manufactured surplus found its way to Norway, Norway despite its modest population has also had a long tradition of producing quality radio and television equipment. Tandberg and Radionette are just two names that come to mind, the list of others is quite significant. Our club has schematics appertaining to most of the domestically produced sets of Tandberg and Radionette, also information about many of the other sets produced under license for other manufacturers such as Philips. (think I am correct in saying?)

I am thankful that Internet has enabled me to participate in club activities, we have information on domestic radios mentioned above, and information online about W.W.II valves (tubes) as used in equipment of German origin. From the club I have obtained some parts for a replica of the Olga suitcase radio used by the Norwegian resistance movement during W.W.II, and some of the parts for a valve / tube short-wave radio that hopefully is pictured elsewhere in this article. My interests are centred around both restoring and constructing replicas of older radio equipment. I feel that despite using a lot of time and energy on producing a replica of top quality it will still only be a replica. My Olga project will include a few discreet modifications to allow it to be better suited to usage in field day events, more of this project another time. ( it wont strictly speaking be an Olga!)

Our club has recently started a chat room or discussion forum for radio topics, at present in Norwegian but in the future who knows? Many Norwegians are capable of several languages, many club members are radio amateurs and have current call signs. I am an exception to the rule, bad memory inhibits my learning Morse and therefore construction and restoration are my key interests. I wont say that I write just yet.

A few details around my Valve short-wave radio project, it will probably use 12Volt valves / tubes similar to 12BE6, 12AQ5 etc this so that it can be easily run from a 12 car battery if need be. By swapping the valves for 6 volt versions it may also be used on 6 Volt supplies. The metalwork will enable it to be built into a rack system so that it may also be combined with a valve transmitter (what else?), alternative power supply units for mains 220Volt. Aforementioned 12 Volt car battery / AGM type battery power supplies will be plug-ins. The transmitter will be capable of telephony and or CW.

Internet is peppered with circuits together with pictures of “glow-bugs” and regenerative receivers, hopefully next time I can post some pictures of my progress. Metalwork is cut and folded, most components are rounded up, just the Inductors and transformers to reckon out and wind. I have some suitable laminations and formers in my junk box.

Seasons Greetings

Alias member 1126



This picture shows some of the parts that almost anyone can purchase via Internet. Some were purchased from NRHF; the largest round Vernier and the square tuning scales are from Mainline Group UK, and despite being “made to order” were very reasonably priced.

The chassis is home made, the inductors and transformers for the Power supplies will also be home made.


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