A few days ago, this video came back to my mind, since I needed to trace down the source of a very annoying noise in my neighbourhood, which was jamming the whole RF spectrum all the way from 150 to 3000KHz. All I did was to walk up and down the street with a portable AM radio, but it took me some time to find a good null point, since the noise was really strong. In the end, the source was inside a newly-established mechanical shop, a few houses apart from mine. After talking with the owner, I found out the culprit was a compressor motor, which he agreed to fix after I proved him he was against the law for producing so much electromagnetic pollution! By the way, this video (and all the others) are amazing. This is what gives me joy for being into a cool hobby as this!
That set looks almost exactly like the AN/TRD-1 we used in Korea until the late 1970s. It was replaced by later 1940's tube equipment, the TRQ-23. For manpack missions we got some other gear in the 80s, the TRQ-30. "Flash"operations to call out targets was done very very quickly.
Fascinating video! Your knowledge and hard work to first find and collect all this rare equipment is amazing. I repair guitar amplifiers built from the fifties to the eighties so I have a small idea of how much work it must be just to get this gear working and calibrated. Bravo! I read a lot of military history from WW2 and always wondered exactly how D/F equipment worked and was used. Very grateful to you for an excellent lesson!
I was an Electronic Warfare Officer flying reconnaisance missions in the analog days. The navigator logged the exact route we flew. I operated a radar receiver fed by a rotating dish. The signal of interest was fed into equipment which showed pulse width, pulse recurrence frequency and other data from which maintenance status of the transmitter could be determined. A direction finding (df) bearing would be logged with the time. At least three df bearings would be taken. After landing a mission debriefing was held and the crew activity reports provided which also included other operators data. The ground analyst would take the data and plot all the provided info which showed location and the "fingerprint" of that system. If it was moved to another location, it could be identified where it had been positioned. It was time consuming but it was the best info available at the time. We are now in digital times and signals hit an antenna in an airplane, ship or satelite, prosessed through computers and relayed direct to intel processors. The navigator has been replaced by a GPS compterized system and so have I. KE5UPM
I have a lot of respect for Norway in WW2 And WW2 family links to both Norway and SOE ( Special Operations Executive ). / My father was a junior officer on HM Submarine Torbay, which carried out one patrol off northern Norway to shield an Artic convoy from German surface attack. Torbay also landed various types of agents and special forces in the Mediterranean and in Malaya. / My mother never said a single word about her war, but after her death, something prompted me to start asking questions. I found a clear link to French Section of SOE, explaining her intimate knowledge of the Beaulieu area in southern England, used as their training area, and for sending agents by air to France. / So I really appreciate your video, Helge. It is one thing to read of RDF in books, but quite another to see it in action, and using the original kit. I watch some of ww2historyhunter's videos, where he explores the many German bunkers. I could imagine radio kit such as yours in a museum in such a bunker. /
As we now know, some sections of the Special Operations Executive were severely compromised, often through incompetence and some possibly by British traitors at the highest level.
Absolutely wonderful video! the realistic feel, accuracy of deployment, knowledge of the equipment, etc...... it is just a trip in time for sure. Thanks for all the fantastic and professional videos that you have done, and are still doing! As I was watching, I was finding myself in the early 1940's after Germans had occupied Norway. Thanks so much!!! Keep history alive! 73
Over the years I had many different WWII radios from aircraft, jeeps, and even a tank. But I would sell it off for other equipment, not knowing how rare it would become in the future! Nice to see so much saved and in use still!
Very interesting indeed, thank you for sharing. Amazing that the equipment works so well after 75+ years, chilling to see the paint wear on the DF circular handle showing lots of WW2 use.
Love the old radio gear! Would be great to use in Fox Hunting as we call it today. Thank you so much for the video. I recall when my Dad had Teletype equipment.
I remember watching he movie 'The Heroes from Telemark' and wondering how true the movie-science was. I guess without having Kirk Douglas skiing past this is as good as I will know. Thanks.
What a great video! I do like it when you include the technical breakdown of the radios with the diagrams of the circuits in use. Please keep making these videos. I cannot wait to see a video on the KlFuSpr.d “Dorette”.
Thanks for the nice comment. I will make a video about KlFuSpr.d "Dorette". I can then also show the technical aspects inside the radio. Nice to get such feedback. LA6NCA
Another very interesting presentation by Helge again. Enjoying the entire process of WW2 DF for the first time. I used to be a radio operator in my military service and was not told about DF at all. Very surprised at the results.
Good result from the German point-of view, the "agent" was caught red handed. There were 3 main DF stations in Brest, Nuremberg and one other German city. When a signal of no German knowledge was encountered, the 3 DF stations were rung up "Achtung die Frequenz 3600 kilohertz" was told, and the 3 stations made the first DF-ing. Later more local stations "homed in" on the agent, the last stage could be the "Gürtelpeilgerät" which was carried under the jacket of the DF officer
So the Abwehr are still active in Norway 😁 An excellent demonstration Helge and amazing accuracy too. It is far better than any modern TDOA systems I have seen/used.
Man you have a great collection of wartime gear. Bless the Norwegian Resistance members for their bravery in WW2. Love the accuracy of that loop antenna system.
Very interesting presentation, with a story too. I have always been interested in RDF workings. It is a pity that my radio club does not have younger members to participate in foxhunts. I would love to have a go at it. Foxhunts remind me of being a child with a make-believe pirate treasure map. Thank you for such a good video.
Thanks for your video. It was very interesting to watch. I have been reading a lot of WWII history the last few years, particularly anything radio related. This was fun to watch because it brought to life what was actually happening during this period. I look forward to watching more of your videos. 73, N7DN
Amazing video and amazing to see this old equipment working. I look forward to watching more. I absolutely love the old radio stuff and this made my day. Great shack and working equipment/typesetter. Cheers! I wish I could spend a min in your shack just to enjoy your treasures and see them at work!
@@LA6NCA I am new to the hobby, I see that you build great transmitters. Is it possible to have you put a video out for a 40m 7Mhz simple single or dual tube (50's) radio build using todays devices, no arduino/chipsets? Thanks!
That's really neat, I love that you received your orders by teletype. My friends and I used to drive around town and track each other with our Citizen Band radios.
Dear Helge Thanks for your videos and nice presentation. I admire you. You have them all in an excellent working condition. First time in my life i see an old RDF. I read stories about German RDF chasing Greeks who were operating TRANSCEIVERS who communicate with Egypt . Best regards from 5B4ER.VERY HOT SUMMER HERE.
Hello Helge. Thanks for putting up this video and for restoring and for keeping and maintaining all these pieces of history. :-) Have a great day, 73 de Mike DL3YZ
Very nice video! You are doing wonderful work to keep old technology alive into the future! I have used antennas that are euphemistically called “elephant cage”. I was surprised with the accuracy of a small, portable radio in your video example!
Very interesting. Also, as a Swede it always feels odd to listen to a video in a language that I don't know and still understand it well enough to not need subtitles.
Veldig god video. Har du mer informasjon om hvordan peilestasjonen virker og hva den antennetypen heter og hvilke prinsipper som er brukt. Det kunne blitt et godt prosjekt å lage noe slikt med moderne utstyr?
Thanks for the message. Yes, I have thought that it should be easy to design such an antenna with modern components. I have proven that it works well. I need to test more at what distances this works. I tested at 3 km now. Will make a video where I try different distances. I use the ground wave.
Absolutelly perfect... Thank you for you effort and energy you put into this video...really nice. by the way would you please suggest me where i can get / buy such locator system ? 73 DE Om1CC
Very educational Helge. Wondered what the process was in using the DF equipment. What frequences is the DF equipment effective other than the 80 meter band.
