Bravo et 73 de F1LC Alfred France

Can't beat that German engineering and technology

Wonderful work. I'd love to see a tour of your lab. Observation: Tape speed seems to be only about 17 - 18 inches per second? (IPS) [45 - 46 cm/sec] -as per the speed meter. The registered speed DOES seem to match the reel speed. How is the tape speed circuit designed? How accurate? The motors are AC hysteresis powered? The play/record speed is slower than I expected. Les Paul told me that he recalled the play/record speed being "rewind fast". (Les said he saw a demo c. 1946). Based on tape head machining engineering of the era, I'd have guessed a faster speed as well. Q: What company performed the original machining of the tape heads? The tape? The war stopped all magnetic audio development at the wire recorder (c. 1938). America simply stopped all R/D on anything that did not have an immediate military need. However, Magnetophon development began c. 1933? -and was ready for market c. 1938? Q: Did the Magnetophon use Alnico magnet material? The Japanese had invented and developed the Alnico permanent magnet by c. 1932. Due to Japanese militarism, the Alnico magnet was classed as a top secret military material, thus Alnico did not appear in the west until well after the war. (see Gibson Hum-bucking guitar pickups and assorted loud speakers). Was Alnico material used in the Magnetophon? Alnico would surely have had many war uses in a AF and RF electronics. Q: What are the high frequency specs, (above 7 -8 kHz), 0 dB/THD and S/N play/record? Are there any original graphs for assorted specs? Tape head design and manufacturing was likely the most difficult manufacturing problem. Next, would be the design, oxide formulation and manufacturing of the tape. There was no 3M Mylar and likely no polyester? Note: Germany could grow no cotton and had little resource for wool, hence, after c. 1942, the military uniforms, originally made from wool and cotton, rapidly changed to ersatz textiles, -polyester? I.e. Germany had technology to produce polyester? Q: I noticed that during rewind, the tape seems to be running over the heads, thus needlessly wearing down the tape heads. Was this an early model? Q: Why do you use the other machine when speed winding? I.e., the Magnetophon is providing the tape winding motor torque. Is there a problem with the Magnetophon's take-up reel at higher speeds? Cheers.

Very interesting. It's great seeing all that WW2 radio equipment in use. However the antenna above the house was a TV antenna.

Magnificently executed tech -- turret bandswitching, castings used for much of the receiver's foundation, to say nothing of its simple but elegant circuit design. From a manufacturing process perspective, note the inspection stamps on each stage coilset for each frequency range. (Radio amateur W9BRD here, and a receiver, especially regenerative receiver, enthusiast. My US Navy RAL-5 and RAK-7 sets are jealous. :-) ) Thanks for the inspiration!

Hallo, zuerst, haben Sie Informationen über Satellitenantenne richtungsgeräte, können Sie mit uns teilen

What is the RF output of this?

73 de SM6MOJ

:0 i am absolutely shocked , so nice to hear sound come from this again , i see you also have a 100Ws ww2 german radio video , im dying in my computer chair right now , thank you for making these , so excited to see more old stuff !

Spy radio but needs 48m of wire... Lol😂

Fantastic video!

감사합니다 😊

Du lager veldig gode og forståelige videoer, Helge. En fryd både å se og høre på deg !!👍👍

Mr. Helge could you tell me the what is the C.I. for amp and AF filter? Thanks for share.

Vy 73 de Luki SQ5WLH.

Thank you for the fantastic video, I very much enjoyed it. Frightening how quickly a trained operator would find the coordinates and agents, I believe it could be done in 3 minutes, G4FAD.

Thank you Helge!

Beautiful project,good channel,more projects please.

What a stunning location to display historic/hysteric🤣radio equipment! A lot of our German coast guard stations had been equipped with "modern" Hagenuk radios. I just checked, they are still in business with top notch technology for maritime purposes, even for submarines!

Thanks Helge. I am collecting parts to build one.

It is great that you keep these working and use them. Thanks Helge!

Du er et geni! Elsker denne blandingen av gammel og ny teknologi. Min nåværende konstruksjon er min første rørrigg. Hart 25 fra 1955. Jeg bygger 40m-versjonen.... Så langt går det ikke bra :) Jeg kan prøve 12A6 sparer å rote rundt med å konvertere DC til varmeovner. TU for alle disse flotte tingene 73 dit dit You sir are a genius! Love this mix of old and new tech. My present build is my first tube rig. The Hart 25 from 1955. I'm building the 40m version....so far not going well :) I might try the 12A6 saves mucking around with converting DC for heaters. TU fer all this great stuff 73

Hei, jeg skrev til deg på Facebook angående den tyske radiostasjonen, vennligst svar

Nice but it seems you not very active on telegraphy... But nice that you are using umlaut... MF band should be more popular for local CW QSOs...

Very interesting. That DF device has German titles on it. And when I understand it correctly at the end, this was how the Germans operated their DF to find enemy transmitters? Recently there was an article in our Ham radio magazine Electron here in the Netherlands about another DF system that was used to aim their bombers to the right spots over London. That system seem to work a bit like the ILS landing system locator. A soos as the British found out they began jamming the signals and even manage to send the German guided planes away from the targets.

This is a fascinating video! Where did you locate the equipment?

Hi Helge. I operated AN-GRC9 at spanish military at 1981/82 ( obligatory military service ). How did yo obtain these equipment? ...military Norway surplus? Thanks for share, very nice

Thank you for the interesting demonstration and description.

Exciting! Thank you for the demonstration of this old equipment.

Exciting small DXpedition! Thank you for sharing the story, the radio, and the place.

I love the adoption and love of all eras of tech on this rig. 73 OM TU FER QSO . de VK2AOE.

Great video. I notice you have made an adapter to use a different crystal type to the original 10X crystal housing. Is it for HC49U series crystals? I have just got my B2 set restored back to full working order and need more crystals for the ham bands. I would greatly appreciate your guidance on this as the HC series crystals seem easily available for amateur frequencies. Many thanks, Chris.

great video thank you for sharing 👌🏻👍🏻👍🏻👍🏻

can i buy one from you☺

Reliable technology. The soul rejoices to see such. us2iy

Very interesting. My father is a very keen radio & electronics enthusiast and would surely love to see this.

Ja! Ist gut. Dankie mir frund😊😊

My fave is the radio fixed in a Altoids box .

It doesn't look like 15W output, mostly likely 1.5W

These were freely available in the SH market in London in early 1960s. As a boy pirated with them! When my fathers house was sold in 1993 I gave them to a collector friend. Yesterday he have them back to me!! 60 years on - their back with me!! Sadly no junction boxes, headsets, mic or aerials! Wonder if they still work!! Thanks for a wonderful video - great presentation Dave G4NOW

Чтобы сохранить эту коллекцию, понадобится помощь государства..

Большой ангар, и в нем огромное богатство! Немного покрыто пылью, но это не беда..

Wonderful to see an old Hellscriber machine in action, and it's amazing that it lends itself to modern software encoding/decoding and SSB tuning!

Facinating, I do love that string operated antenna tuner! Thanks Helge... 73

Ver interesting, thank you very much for the video.

German Electronics are always the best made

German Electronics are the very best

IT IS VERY MUCH APPRECIATED PLEASE.

Helge you are just fine...tnx for the nice video..73..de. ta3iid...

This is the largest radio collection I ever seen. In my 70+ years , I’ve only been familiar with American equipment. I didn’t know so much more existed. Thank you for sharing. I hope you have made arrangements to preserve this collection for future generations to see. I would love to travel to Norway just to visit this museum.