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Copen Restoration Project 1

I have been fortunate to acquire three original Bruce Copen Radionic Instruments. Unfortunately, they were in quite a state when I received them. The images below are of a nine dial base 10 resistance instrument. I can’t seem to find any information on this, but judging by the pass dates on the old Colvern potentiometers, it is from the early to mid 50s. Looking at the general grime build up and rust on the nickel fittings, I can only assume it had been stored in damp conditions for a number of years, most likely in a shed or barn. It is sad to think that these impressionable instruments were left neglected, their original owner no longer able to care for them. At one point, they were used extensively to manufacture homeopathic remedies. A lot of the surviving vials came with the lot. However, I have no use for vintage remedies so have stored them away. If anyone is interested in the vials, please get in touch.


I am slowly, working my way through the restoration, and am making good progress. I have decided to tackle this nine dial instrument first, as it is the easiest. Currently, I have fully cleaned up the casing, and replaced the fixings with brand new nickel latches and hinges from the original company. I have also replaced the leather strap handle on the front. The inside lid has been lined with red card, reflecting the original intentions of using paper, which was too damp and dirty to re-use. I will upload some new photos on another post over the next few weeks. Currently, I’m working on the control panel. Sadly only one of the original potentiometers is in full working order, luckily it is the one which can’t be easily replaced. Copen’s wiring is the most unusual. On this nine dial instrument, you have three logarithmic carbon track 1Megaohm pots, then one 50k linear carbon track. The remaining five in the sequence are Colvern wirewound’s which go from 100k, 10k, 1k, 100R, and 10R I can see the logic in the last five as the resistance steps down, but it’s almost as if Copen has rummaged in his parts box to make up the first four in the stage. This initial 3-4M of resistance is seen in the other instruments I have. It would make more sense if they stepped down like the others and were all linear. It’s a mystery!


The neon lamp on this instrument is wired in an unusual manner, so that it is turned off when the power is in the off position. I suspect the original owner fiddled with the wiring at some point in its history. I intend to rewire the circuit with the same type of wire Copen used, and replace the shot pots, but leave the unusual configuration intact, aside from the neon lamp which I will change to reflect the correct way of operation as seen in the other instruments I have. I look forward to presenting the fully restored instrument to you in a new article.



Update: 18th April

Some of the potentiometers aren’t as damaged as I originally thought. A great deal of tuner cleaner, and they appear to work o.k. Its not to my usual high standards, but what can you expect from components that are sixty odd years old?! The resistances are all o.k and within the manufacturer’s tolerance range, it’s just the movement  is not as fluid or consistent as I would have liked, and this may present a problem when tuning the instrument. I have several wirewounds en route, so it should not be a problem. I would like to keep the originals where I can.

Furthermore, the card lining the lid has begun to peel away. I may just go and Araldite a sheet of thin felted, or vinyled wood to the lid to get around this problem. In any case, I will stick with the red as it compliments the red leather of the case.


The clogged up dials on the control panel are clearly visible in this image. It has since been completely taken apart and cleaned. The dials look as good as new now.

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6 Responses to “Copen Restoration Project 1”

  • lotus:

    I’m so glad to come across your site and forum while searching!

    I have a Copen ASLD95, with the ADAP-1 interface which connects to the Scope v4 software on the PC. I have mixed feelings about the software and as I get better results using it in pure analog mode.

    While I have the manual, I’m still a newbie and disappointed that the German office is not interested to support the analog instruments, pushing the MARS III instead, while the US distributor for analog instruments doesn’t answer his mails.

    I have a lot of respect for Copen, but feel lost as I’m barely able to use the ASLD95 to its full potential. At one point, I was almost looking into getting a Homoeonic (who used to make Copen clones) instrument to get better support.

    I’ve been looking at Welz devices and find your forum to be a breath of fresh air, as many people are getting duped by Welz’ marketing. I’ve been warned that he is a slick salesman first and that other people have been making far more powerful devices than his most top model and selling them for less than 1/10 what Karl charges.

  • Sorynzar:

    I am by no means an expert in the field, just a humble researcher and instrument builder. Most of the greats learnt from each other’s work anyway. It’s a two-way process of inspiration! :) I can try to help in anway I can, but I’m limited by the Copen instruments and documentation I have to hand. Knowing the radionics process as I do. You would be better off working in pure analogue mode. Any computer interface is a gimmic as far as I’m concerned. There is of course functional software out there, which can be used as frequency generators to drive a certain process on instruments, but all you need for that is an audio jack.

    I would suggest using it in analogue. If something electrical fails, I could gladly take a look and see if I can repair it. I would not charge for my time, just cost of parts, and shipping.

  • Federico:

    i would be glad if you can tell me where to purchase it, or, if not possible, where to to find the plans dor building it and the schedule of components.
    My most sicere congratulations
    and compliments!
    You’ve done a wonderful tool!!!! I do need it..i was looking for it for several months by now and the Miraclee happened!
    All the best wishes! Great Job!!!!

  • Sorynzar:

    I am not sure where one can be purchased from. The Copen instrument I have was part of a house clearance, and is in pretty bad shape, hence why it taking me so long to bring up to scratch. I did meticulously take notes, and reverse engineer the circuit. I can draw you the Copen schematic of this instrument for twenty dollars. If you are interested, let me know.

  • Regarding the comment: “There is of course functional software out there, which can be used as frequency generators to drive a certain process on instruments, but all you need for that is an audio jack…I would suggest using it in analogue.”

    I am interested in obtaining analog radionic equipment….

    I would appreciate any direction…

    Thank you,
    Bill Wolfe

  • I dont know if I can be of much help, but I have been a Radionic Practitioner for about 35 years, so although I havent used a Copen instrument, I had many others of that Era. Basically it doesnt matter too much what to do to the old style ones, the most important part of the instrument, is the operator. I remember that you always had problems with new instruments, because the instrument had to gel with you as the practitioner, in other words you need to impregnate the instrument with your energies. It didnt take long, but you could feel it was easier to use. The other thing that we found out later, for a good instrument you should use wood, and proper wooden joinery. NO GLUE I cant remember why, but it was not good, best to use wooden dovetail joints. Sorry I am not a technical person. I used those with plastic cases, but didnt like them as much as the wooden ones. Also we didnt ever use electricity because it was too coarse, only used for a timer. Nowadays the instrument I would recommend, is one from White Mountain Radionics in the US. The owner is an English lady, who was a pupil of the late Tony Bassett in longer who was a absolute genius with radionic instrument, even though they looked terrible.
    I have one of her instruments and they are amazing, i can make them do things nobody elses instruments can. We can use plastic cases with these and you can put them in your pocket. They have memories but gone are the days of using rates. You dont have to be a trained person to use them, nor do they require your energy, you could read a book and operate it at the same time, and it would work. I can talk into the computer and say for example a Homeopathic remedy and the potency, or just say something like pain in my left shoulder in any language.

    So what I would say to you, just use your intuition with the old instruments, do what you feel is right inside you, thats how they work. Hope it helps a little bit. By the way we even made up paper instruments drew something on a piece of paper, it worked just the same.

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