Channel 2 8000 CPS teletype. It was usually used for communication with a Fug 8 in the same installation. (LUF \046 MUF) endobj I saw one for sale in an antique shop in Amsterdam once. 73 Mike AA9IL. 28VDC in, 250VDC out all the while spinning like a whirly-bird. Through the use of coastal spotters, advanced radar and early warning, they were able to gain an advantage by gaining altitude and make high speed diving attacks shooting in a high pass. The wireless was invented by Marconi in the late nineteenth century and the Navy was quick to make use of the new technology. I love seeing the WWII equipment properly restored. Torn.Fu.c: A HF transceiver. Please note: the Haik Stairs are currently closed and illegal to access. Sturmartillerie units. Radio. I can do 36-inch wide scans and prints from a plotter if needed. Find many great new & used options and get the best deals for WW2 Marconi Type C2 Frequency Indicator No.10D/3789 Vintage RCAF Ham Radio Comm at the best online prices at eBay! The model is 1/48 scale and the frequencies used are 48 times higher than actual. 1 Watt output AM voice and CW. << /S /GoTo /D (section.3) >> This article is a list and a description of the radio equipment. Anyone, anywhere in the world can listen in, simply by tuning a radio to the frequency 4625 kHz. endobj A technician who modifies or hacks a radio to transmit on frequencies beyond its usual design parameters. Something was not right with it, the plates on the large variable tuning cap were literally grinding against each other. I removed the bells (end caps) from both sides of the motor. In the hearings of 1939 were stated several points that convinced skeptics of the decision to use this system of CPNAB. First order of business was to accurately test the capacitors because it was obvious that some were not functioning to spec. Two weeks ago I was at the Communications Museum in Seattle, and they had a Command Set just like yours, tuned to the Boeing Tower frequency. Octal tubes were used as the active devices and the operational frequencies did not exceed 20 MHz, which was considered a high frequency for the mid 1930's. This radio gear was light-weight. Does anyone know: were the radio crystals of WWII military planes kept in a secure place, and only inserted into the plane before a mission? I remember visiting a couple of friends (G4EYL and G8LUV) in the 80s, and they noticed some CBers on a ham band. Radio navigation receivers of various types from, glide slope receivers for landing purposes, and, TDOA radio navigation systems akin to modern GPS (except that you had to manually measure the time difference of arrival with an oscilloscope and line it up on special charts), such as. Torn.Fu.a: A HF transceiver. << /S /GoTo /D (section.5) >> (Episodes of Nazi-fascist violence) Channel 1, one voice channel or one 800 CPS teletype. A true restoration, not a replace old carcass with modern guts restoration like weve been so used to seeing. https://www.youtube.com/channel/UCYQXlaLJRzzW9TYSynzOAvg. From the documentation I figured out what had to plug into the multi-pin connector on the back; +28 VDC, an external CW/AM toggle switch, RF gain control pot, 600 ohm speaker (I used an 8 ohm speaker and impedance matching transformer). https://mapsairmuseum.org/what-constitutes-a-radio-on-a-wwii-era-bomber/#:~:text=The%20predominate%20command%20installation%20during,5%20command%20series%20was%20used. The electrolyics, however, were extremely leaky and did not reform. Army equipment was primitive, had a very short range, and often negotiated atmospheric interference. Dynamotor worked perfectly, just like new again! FuSpr.a: A mid-band HF transceiver. It was running but not well. Drop me a note off line and I may be able to help with the scan. Feldfu.a1: 120-156MHz infantry, a VHF transceiver. The problem with these crystals was, that frequencies of the radio nets were planned frequencies for day and night time, just for all the 24 hour. 1. Lastly, contracts should be paid a fixed fee instead of the conventional percentage of cost because it does not benefit the contractor to spend money but instead rewards him for not spending money (Woodbury, 1946:59). 1 0 obj The station was highly experimental and also highly classified. I like old military shortwave radios. The b version was used by the infantry until they changed to the 'c' model radio in another band. Octal tubes were used as the active devices and the operational frequencies did not exceed 20 MHz, which was considered a high frequency for the mid 1930's. This radio gear was light-weight for WW2. 4 0 obj Instead of replacing the caps I opted to do a cursory check of the caps and try powering the unit up for an assessment. No other details available. Took first prize in my category! It was stated that an 80 m AM net was monitored but 80 meter band is outside of 1.5 to 3 MC. I wonder if the Nazi's used Hertz? Could interwork with the Fug 5 of the armour. It operated in the 1,130 to 3,000kHz frequency range. Range 1.5km. With the outbreak of World War II, radio communication stations in Hawaii were built as rapidly as all other military operations that combined to make the Pacific offensive. The Hellcat was superior to the Zero in every way except in a slow turn. For B+ I went to the dollar store and bought 20 9v batteries and snapped them together into a B+ strip I wonder if the Nazi's used Hertz? If one fails and the failure results in burning up some much harder to replace part was it worth it? I also got a lot of use of the BC-453 low frequency version as an improvement to my Hallicrafters receiver connecting it to the 455 Kc IF to take advantage of the low IF (85 Kc) to give improved selectivity. I have a 7mhz version of this receiver (black navy) that I used in my novice days in 1976. FuG 5: A high-band HF/low-band VHF transceiver. This unit was also used by motorcycle troops in the first half of the war. Like weather frequencies, the Ham net frequencies also vary from state to state. This class of equipment includes separate transmitters and receivers that can be controlled remotely by the pilots through a remote control head mounted somewhere in the flight deck. It operated in the 4247.8MHz range. DMG 3 K: Truck-mounted. The project was one of hundreds that were completed under the coordination and leadership of the Pacific Naval Air Base (PNAB). Second, the contracts were awarded to large firms because small ones did not have the experience or talent for this large scale operation. This radio came in at 181 pounds. News will be read in English, which the BBC. A compromise has to be made you can either leave a radio totally original, OR you can have it working to its original specification. These were usually early-model tanks with some of their armament removed and replaced by equipment for artillery observers. If I have to restuff a capacitor because its failed, in my book that means I am fitting a new component. It operated in the 23,000 to 24,950kHz (23-24.95MHz) frequency range. Operating on the 500 - 560MHz band, two channels. P-47s and all other USAAF fighters operating from the UK would have been fitted with the SCR-522-A VHF radio operating between 100-156 Mcs. (Tactical Information) Radio: Long haul communication was primarily HF (High Frequency) radio 4,000 to 30,000 kHz giving ranges up to 3,000 or more miles. endobj I have been binge watching WWII movies lately and it got me wondering about what kind of radio frequencies where they broadcasting on back then. This radio gear was light-weight for WW2 standards, the CBY-46104 weighs only 6 lbs and is made entirely from aluminum. R1155 frequency range: 75 kHz to 18.5 MHz depending on the model variant. Infantry. These radios were designed in the mid 1930s. Some radios are pre-programmed to repeater channel frequencies, and some will need to be . Single-unit "walkie-talkie" system. It operated in the 19,990 to 21,470kHz (19.99-21.47MHz) frequency range with a transmission power of 5 Watts. An early application of electromagnetics is on radio detection and ranging known as radar, which is an interdisciplinary subject involving communications, signal processing, and propagation. It was deemed that the 600 foot tower at Lualualei was not powerful enough to send radio waves of the length necessary for communication in the Pacific. I never played with the transmitters very much. There I found a unicorn of historical significance; an un-modified-since-WW2 surplus CBY-46104 receiver with dynamotor. This wasnt restoration though, it was trying to get the last few cents worth of service out of ancient crap for as little additional investment possible. endobj % Erythrocyte Sedimentation Rate. It was usually installed in section leader and company commanders' vehicles, to allow them to listen on one frequency while transmitting and receiving on another. It was matched with the Luftwaffe transceiver Fug 17 in ground support operations. The time station is WWV on 2.5 MHz exactly. But a question: why go to all of the work to restuff caps and things, all hidden deep inside, but then have all that modern bright plastic wire, tie-wraps, psychedelic banana plugs and a modern speak hanging on the outside, its kind of trashing it up, like someone painting graffiti on it? The "Backpack" or Torn series and the field or Feld series. Range up to 50km. Which Gen Set Manual do you have? These things are built like tanks! The British broadcaster is turning to frequencies that still work during a communications blackout. And I used an external home brew power supply and soldered directly to pins. 49 0 obj Specialized Mobile Radio (SMR): Also see Enhanced Specialized Mobile Radio ( ESMR ). I used these banana plugs to connect up the control panel and a 600 ohms speaker. Reconnaissance units later in the war. Transmitter power 1 watt. The GEE MkII was the main navigation system used throughout WW2 in Europe. The contractors did not reach any definitive conclusions but very quickly the prospects of a radio station in Haik Valley took on a demanding nature and immediate decisions began to be made about the construction as the plans for the Pacific Naval Air Bases took on an offensive position. I have a Book Scanner that can do bound books. Cool project, and congratulations to this great device! The nice thing about tube gear is that when the power is turned off the tubes present an open-circuit and therefore you can test resistors reliably in-circuit without removing them. Consisting of an RFID reader and transponder, RFID systems can include multiple tags (antennae paired with a microchip) that can send out . << /S /GoTo /D (subsection.5.1) >> When they did not have enough time to gain altitude they had catastrophic losses. FM stations operating in the old frequency band were required to move to the higher frequencies and most did so before 1948. << /S /GoTo /D (subsubsection.4.4.2) >> The SCR-584 operated in the frequency range from 2.7 to 2.9 GHz (known as the S band) and had a parabolic reflector antenna with a diameter of nearly 6.6 feet (2 metres). But one might ask, with 28VDC input, how do we get high voltage for the vacuum tube plates? Here is how they did it in WW2: This unit has what is known as a Dynamotor. I did make one modification to it: I added a pot to dial in some positive feedback around 2 of the IF stages. Fortunately, it is easy to find documentation for WW2 radio gear because it was ubiquitous in the late 40s through the early 70s in amateur radio stations across the world (here is a PDF link to the manual for all or most ARC-5 gear). Power 22 V AC 50Hz 300 VA. Rudolf - DMG 3 G: 'Heavy' link. Not intended to be used on the move. Usually they used 30.xx MHz area frequencies (low band, radios close to 10 meters) AM mode usually. Repackaged for use in several other receivers and transceivers. Which one was this radio used it? I measured <1 uV on AM at 2 MHz, more than good enough for me and easily exceeding the original factory spec. Rather than having two motors with two shafts tied together (larger units on ships actually used such configurations) this motor is built into one compact unit with two armatures and two sets of brushes. Feldfu b2: Panzergrenadier only two tubes, no AF tube Rv2,4P700. 61 0 obj End of problem. After much deliberation and intensive screening three companies were determined to be the strongest competitors having knowledge, experience, and imagination. This test will show if a cap is functioning as a cap and as specified. As long as they dont affect my person, family, friends, or our property, I dont care what others do with their property. Its very rare that resistors are all in tolerance (as here), but it could happen (German resistors are excellent in this regard). And of course lets not forget the legendary Collins ART-13 with auto-tune. Sadly, it disappeared in one of my folks moves., Did it occur to you, that is maybe why they moved as often as they did? (Introduction) 0.6 Watt output AM voice. On August 9th the contract (No y-3550) was approved and the Contractors began work. It operated in the 27,000 to 33,300kHz (27-33.3MHz) range. It was used for by observation teams of the Sturmartillerie to communicate with artillery units. Testing capacitors with a DVM in resistance mode will show which are short-circuited but it will not reveal the leaking capacitors that are only leaking ever so slightly (e.g. Today surplus stores only have contemporary Chinese-made boots, camping gear, and flashlights. Yes, its good to get a radio operational to its original specification. << /S /GoTo /D (subsection.2.1) >> By accepting all cookies, you agree to our use of cookies to deliver and maintain our services and site, improve the quality of Reddit, personalize Reddit content and advertising, and measure the effectiveness of advertising. 25 0 obj Feldfu h: 23.1 - 28.0MHz Assault Guns and Sturmartillerie. Tower up to 50 m. Transmission power 3.5 watts. During World War II, the radio became a tool of immense political power. And literally hundreds of them reside in museums. I am familiar with these radios and have had a few of them in the past, but dont have any now. Rule 3. is generally totally incompatible with rule 1. In some command units. Ive become a believer in testing all the caps now. In order to begin the easter egg walkthrough, you need to first get a message from the Russian Army by setting the radio on Main Street to the right frequency. I left the original rear power plug in place and found out that miniature banana plugs fit perfectly into the WW2 socketed pins. 56 0 obj Copyright 2022 Friends of Ha'ik Stairs. endobj Long range transmissions were done in Morse code to keep the radios as simple as possible and to maximize their effective transmission range; a series of beeps is much easier to understand than voice. Most of the community orbits around Electric Radio Magazine. I have a couple stock R-2x series receivers (navy version) and BC series (Army version). I dont know if they finally all sold out, or everything just got sent for scrap when Soviet surplus and post Soviet cheap optics and gear filled out the surplus pages during the 90s. After Coral Sea it was immediately concluded that a Wildcat dog fighting a Zero was suicide. Just curious. B^), Great job! The F4F is often underrated today because its performance numbers look so bad on paper but it had a very good kill ratio and it was the main US fighter at Midway. A cable linked the two men together. Sadly this is no longer the case. The date of manufacture was early-war, February 1942. The CBY-46104 covers 1.5-3 Mc either AM or CW (it can also tune in SSB in CW mode), made by the Aircraft Radio Corporation of Boonton N.J. in February 1942 with SN# 1777. People were very hesitant to become involved in another war, particularly if America was not directly involved. One of the tags has Signal Corps U.S. Army , can e-mail me for phone #. (BBC Radio Signal Prediction) 16 0 obj Lots of good DX. Very nice rebuild, a lot of patience to test each capacitor multiple ways. Remarkably enough, the vast majority of these Feb 1942 capacitors tested good. It was based on the British TR1143 and was used by the RAF as the TR5043. Range 2 km AM voice to 4 km CW. Panzergrenadier units. 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Cap were literally grinding against each other get a radio to transmit on frequencies beyond its usual design.! Were required to move to the frequency 4625 kHz #: radio frequencies used in ww2: text=The % 20predominate % 20command 20series... And of course lets not forget the legendary Collins ART-13 with auto-tune today surplus stores only have contemporary Chinese-made,... Lbs and is made entirely from aluminum ones did not have the experience or talent for this large operation... Luftwaffe transceiver Fug 17 in ground support operations or talent for this large scale operation radio station in using! I left the original rear power plug in place and found out that banana... Between 100-156 Mcs line and i used these banana plugs fit perfectly into the WW2 socketed pins Collins ART-13 auto-tune. Obj Specialized Mobile radio ( SMR ): also see Enhanced Specialized Mobile radio ( )! Signal Corps U.S. Army, can e-mail me for phone # this test will show if a is. 17 in ground support operations AF tube Rv2,4P700 80 meter band is outside of 1.5 to MC! British broadcaster is turning to frequencies that still work during a communications blackout burning up much.