Dynamotor worked perfectly, just like new again! endobj In some command units. Long range radio systems to communicate back to base, typically consisting of an ART-13 transmitter and a BC-348 receiver. Range 2km AM voice to 4km CW. endobj The B-17 was the work horse of high altitude heavy bombers when the United States entered World War II. During a siege on enemy territory, the Aztecs warriors would sound the "Death Whistle" in an effort to cause their . 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. A system was needed that could send messages to the bottom of Tokyo harbor. Olek has updated the project titled Fan Controller. I found mine at the Dayton Hamvention many years ago for $10. To preserve this historic treasure my rules of restoration were: These were not easy rules to follow because, as we know, the first step to antique radio restoration is to replace all of the paper and electrolytic capacitors, saving a lot of headache and time. (Introduction) Aircraft used a variety of frequencies. There are plenty. Formed the base design of other units. Torn.Fu.d2: A VHF transceiver. I can do 36-inch wide scans and prints from a plotter if needed. 41 0 obj You might enjoy this video on reconditioning a WW2 aircraft radio that was converted to civilian use. Free shipping for many products! (LUF \046 MUF) My elmer was a B17 radio op. Nice work. I never played with the transmitters very much. It was matched with transceiver Fug 16 for use with Sturmartillerie (self-propelled artillery). 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. >> WWII WW2 BC 611 HANDIE WALKIE TALKIE US Army Radio Reciever Top plate $79.99 $11.99 shipping Pre-WW2 US Army Military Signal Corps Field Phone Radio Telephone Type EE-3-B $429.99 $42.00 shipping or Best Offer Vintage WWII Army Signal Corps BC-603-D Field Radio Receiver Western Electric $199.99 $53.79 shipping These radios were designed in the mid 1930s. Both the army and the air force made use of the same equipment. There seemed to b warehouses full of them up into the 80s along with a lot of other WWII stuff still around. .15 Watt output AM voice and CW. I have a Book Scanner that can do bound books. Comparable to the American SCR-508 tank radio, which covered a similar frequency range (20-27.9MHz) at 25 watts. endobj Depending on the set a range of communication facilities were available consisting of voice and/or teletype and Hellscriber. Look . endobj One of them went under the stairs and there was the characteristic sound of a dynamotor spinning up they blasted out Morse at (I think they said) 2kW for a few seconds and then G4EYL used her best local-radio announcers voice to tell them they werent welcome. 40 0 obj In the hearings of 1939 were stated several points that convinced skeptics of the decision to use this system of CPNAB. 73 Mike AA9IL. It was used for communication back to the regimental command post. For this radio not one resistor was out of tolerance! I made a lot of contacts on it. At that time, the mood of America was one of caution. Something was not right with it, the plates on the large variable tuning cap were literally grinding against each other. If run out of trim, I might do a little naughty and just strap a little booster cap across it. It operated in the 23.11 to 24.01 MHz (24100 to 25000kHz) frequency range with a transmission power of 5 Watts. I love seeing the WWII equipment properly restored. There are also other frequencies allowed based on location (Hawaii, Los Angeles, and the Grand Canyon). The new receiving station at Wahiawa amply met these requirements but the main Navy transmitter at Lualualei was not powerful enough for an all-ocean war. Used at the regimental command post. Maybe 160 meter AM net? Production on the SCR-536 radio began in July of 1941, and approximately 130,000 of them were built by Galvin Manufacturing Co./Motorola of Chicago, Illinois. endobj It was used for by reconnaissance elements for intercommunication. Could interwork with the Fug 5 of the armour. endobj RFID - Radio-Frequency Identification - uses electromagnetic fields to identify and track objects which carry either a passive or active tag. I agree with the sentiment about not hacking, but restoring these venerable veterans. 73, gary/NJ8BB. endobj DVM testing only reveals the short-circuited caps, this is a necessary first step. It operated in the 4247.8MHz range. This receiver is part of a series of radio gear known as ARC-5 command sets, which describes an entire class of WW2 transmitting and receiving equipment for aircraft-to-aircraft communication. I know ATA ferry pilots had no radio, even on repaired planes, and was wondering how that was accomplished. 68 0 obj 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. The Navy would choose the contractors it believed competent to do pioneering work under stress of emergency, then pay them on a cost-plus-fixed fee basis. The 1940s also came to be known as the Age of Golden Programming for radio shows. It was usually used with a 1.4 metre antenna. Looking back at my own history, its clear that the kids toys were always the last priority in a move. 69 0 obj B^), Great job! stream Reworked to produce the FuG 5 (Luft) variant which was used for air-to-ground communication until replaced with the FuG 7. In modern low-voltage electronics the key metric to capacitor goodness is ESR. The electrolyics, however, were extremely leaky and did not reform. In 1936 the Lualualei Valley transmitter was activated (HABS, 1997:6). During the war this was extended to cover the majority of the occupied areas or Europe and North Africa. More to the point, how might the workers themselves reach the top of the ridge (Wainwright, 1997). 49 0 obj This thing was preserved as good as the day it was removed from its F4F Hellcat. I applied 28V and, carefully with my finger, pushed the armature on the 28V side of the dynamotor to coax it into operation. I connected up my 20 m external dipole and powered up the radio. Sadly, it disappeared in one of my folks moves. Tower up to 50 m. Transmission power 0.4 Watts. Fortunately these are easy to service, they are designed so that anyone with a flat-head screwdriver can fix them. During World War II, the radio became a tool of immense political power. 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. The Aztec "Death Whistle" served a variety of purposes from human sacrifice rituals to warfare. Fug 21: A 0.1 - 10MHz receiver paired with a 2.5 - 7.5MHz transmitter. From 1936 the German forces started deploying a range of communication links using UHF frequencies to form a point-to-point mesh communication network. FuG 12: A medium-wave transceiver (receiver/transmitter) used in command tanks. It led to my career in electronics. Which one was this radio used it? Everyone is thrilled and amazed to see a dynamotor-powered receiver that is running almost entirely on its original parts and as it was originally built. 81 0 obj %PDF-1.5 All paper/wax capacitors were fine. After Coral Sea it was immediately concluded that a Wildcat dog fighting a Zero was suicide. Ground-to-air range 60km AM voice to 80km CW. Remarkably enough, the vast majority of these Feb 1942 capacitors tested good. The Navy quickly decided to build a long range low frequency radio station in Hawaii using this type of natural resource. Sturmartillerie units. Found this today, while researching how to fix up my CCT-46192 (roughly like the AN/ARC-5 R23) that hasnt seen power since probably 1985. Frequencies around the 13-18 GHz band is where precipitation radars generally operate. 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. Channel 1, voice or 2400 CPS teletype. June 1940. << /S /GoTo /D (subsection.6.1) >> Near exclusively AM mode. It operated in the 3-5MHz frequency range. 73 K9LJB. . Early in 1945, in the Northern Appenine mountains of Italy, T/5 Harvey, a radioman with the 10th Mountain Division, is carrying his WW2 . Very cool! Please note: the Haik Stairs are currently closed and illegal to access. 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 1930s. What an incredible receiver, it was wide awake and operating to its original specifications once more! Usually they used 30.xx MHz area frequencies (low band, radios close to 10 meters) AM mode usually. FuG 3: A low-band VHF receiver. It also seems from recently received info that in 1947 the World Radio Conference and ICAO adopted the basis of current system(118-132Mhz later expanded to 136, then 137mhz) for en route/ local traffic/Approach/Tower etc..while HF was retained for long distance comms (much . (Multipath) Radio was the cheapest form of entertainment, and it was the most popular medium during World War II. 36 0 obj I followed the instructions from the original service manual, aligning the IF first (using a modern synthesized signal generator to get it spot-on), then the front-end variable cap assembly that I had just repaired. The Submarine Base at Pearl Harbor, established in 1919, found itself at the forefront of war operations for the Pacific during World War II. Range 1.5km. endobj Things looked bleak for the Allies after the fall of France and the retreat from Dunkirk, Britain was on the defensive and most people believed that the invasion of England would soon begin. << /S /GoTo /D (subsection.4.3) >> Very, very well done! How the lineage of the walkie-talkie reaches from World War II to the modern cell phone. I figured out the problem after about five minutes of reverse polarity operation. Sets employing frequency modulation and carrier techniques were developed and used, as were also radio relay sets that used radar pulse transmission and reception techniques and multiplex time-division methods for obtaining many voice channels from one radio carrier. For general aviation, 122.75 is the official fixed wing air-to-air frequency designated by the FCC and FAA (and 123.025 is for helicopters). The Navy believed it possible to use the natural geography to create the necessary height. About Me - Opt out - OP can reply !delete to delete - Article of the day. Range approximately 10km with Cw and 3km with voice. Replacement for Torn.Fu.f. They used radio frequencies from 15 kHz to 33,3 kHz. Ive been told all my life about old-timey Army/Navy surplus stores where you could buy buckets of FT-243 crystals, radio gear, gas masks, and even a Jeep boxed-up in a big wooden crate. As long as they dont affect my person, family, friends, or our property, I dont care what others do with their property. Its definitely going the extra mile to do this and if you can keep it going a little longer than 20 years that will make it a hundred years old and possibly the future generations will see it as value and keep the restoration going. 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. In fact, using sound to psychologically attack an enemy has roots in the ancient Aztec culture. It was used with various antenna ranging from 1.8 to 9-metre antenna. Building for war:Contractors, Pacific Naval Air Bases. A leaky cap will act like a high value resistor, in the many-multi-mega ohm range thereby reverse-biasing the grids of tubes or discharging itself causing it to not function like a capacitor at all. The German-army-issued infantry radios in two main series. 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. Axis Sally (Mildred Gillars) Several American Nazi sympathizers worked as broadcasters for German state radio, but perhaps none was as famous as Mildred Gillars. Not reversible. Small world. Isnt ESR short for Equivalent Series Resistance? Copyright 2022 Friends of Ha'ik Stairs. Join the movement, there are many others who restore WW2 and other vintage gear to be original as possible. Radio Saigon was designated to carry anti-British broadcasts to India, backed up by similar programs emanating from transmitters in Singapore and Bangkok. Most times a good proportion of resistors have to be replaced..with modern parts, because if you find old parts of the same type they are all out of tolerance too. It operated in the 4.5-6.67MHz frequency range. I did make one modification to it: I added a pot to dial in some positive feedback around 2 of the IF stages. 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. This radio transmitter was 25 watts and had a range of 7 miles moving, and 10 to 15 while stopped. It spun up like a 1950s jet engine! (BBC Signal and Sunspots) Learn how your comment data is processed. The Wildcat was completely outclassed by the Zero, which enjoyed a 12:1 kill ratio over American planes at the beginning of the war; with the exception that the Wildcat was amazingly durable. Nice restoration. (Episodes of Nazi-fascist violence) Aviation Distress (VHF Guard) 118.000 - 121.950 MHz. One exception I removed the flower pot caps carefully with a soldering iron and dental pick/solder sucker to unwind the wires. Those old radios are fun. Channel 1 control channel voice, Channel 2 nine voice channels or p x 3 Teletype. I have one receiver with the dyno I run stock and the caps appear fine so I left them in. endobj Now that everything was in order it was time to try the radio in its final configuration. I bought it from a fellow in a wheel chair who had a shed full of surplus electronics. The first decade of FM broadcasting, starting in 1936 to 1946, occurred in the 42 - 50 MHz band. Range was approx 23km when using AM voice and 34km when using CW. A technician who modifies or hacks a radio to transmit on frequencies beyond its usual design parameters. Now there are so many easily modifiable kits and open source designs the remaining historical items are better off as museum pieces. FuG 5: A high-band HF/low-band VHF transceiver. Most of this equipment received the generic prefix FuG for Funkgert, meaning "radio device". Then noise came out of the speaker. I re-connected it the correct way and it worked just as well as it did before. Torn.Fu.b: A HF transceiver. Military radar band nomenclature is widely used today in radar . In comparison, there's a morning Ohio rag chew net that operates on 28.337 MHz, Monday-Friday at 8:30 am. I found that all but three of the metal-can-sealed wax and paper caps (special to ARC-5 and other WW2 radio equipment, otherwise known as flower pot capacitors due to the shape of their metal cans) and the electrolytic caps needed to be replaced. I was one of the youngsters who got an ARC-5 receiver in the mid 50s. In particular they questioned how the wires would be brought to the top of the ridge from the Valley side. Born in Maine, Gillars was a. One of the first tasks was building the Operation Office in Alameda. This test will confirm that a capacitor is presenting a low impedance to a high frequency signal. At this point I had two toggle switches and a pot with a mess of wire shoved into the rear panel connector pins. (Fug 8 + Fug 4). I dont think you kept your own rules here because you replaced some capacitor with new parts.
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