All caps were open-circuit as far as my DVM was concerned (unfortunately DVMs are not sensitive enough for a proper leakage test, more on this later). It is a carefully balanced chassis/radio design for weight minimization (these were installed in aircraft after all) while also remaining rugged and able to provide stable operation across MIL-SPEC temperature ranges and intense vibration. EDIT: forgot to add that nearly all transmitters employed crystal-oscillators (wartime demands actually drove research to make leaps in radio crystal quality). Military radar band nomenclature, L, S, C, X, Ku, and K bands originated during World War II as a secret code so scientists and engineers could talk about frequencies without divulging them. FuSpr.a: A mid-band HF transceiver. With this increase in appropriations the Contractors also needed to expand their resources and invited in two new private companies, the Morrison Knudsen Company, Inc. and the J.H. A giant sending station must be built that would reach not only to the waters of Australia and the Indian Ocean but also to every Allied submarine-submerged-especially if she were on the bottom of Tokyo harbor (Woodbury, 1946:349). 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? Specialized Mobile Radio (SMR): Also see Enhanced Specialized Mobile Radio ( ESMR ). Operating on the 475 - 525MHz band, two channels. 33 0 obj The time station is WWV on 2.5 MHz exactly. 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. endobj Used by artillery forward observers. Will have to replace it. When the contract was finally terminated, December 31, 1943, the total construction and cost amount of their contracts was over $692,000,000 (U.S. Dept. Range approximately 10km with Cw and 3km with voice. 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. magopeter liked Flipper Zero Multi-tool Device for Hackers. The frequency range was (Mc) 20 to 27.9. Olek has updated the project titled Fan Controller. Fug 18: Group of radios covering 25 - 77.1 Mhz Fug 19: A transceiver operating in the range 3 - 7.5 Mhz. Eric Steven Raymond Second, the contracts were awarded to large firms because small ones did not have the experience or talent for this large scale operation. Ideally, capacitors should present no resistance whatsoever, but practical capacitors do present some low resistance and bad capacitors present a lot more than some resistance. FuG 11: A medium-wave transceiver (receiver/transmitter) used in command tanks. The electrolyics, however, were extremely leaky and did not reform. As with every other aspect of the entertainment industry, the government had a firm grip on radio stations, which led to censoring many of their programs. Of course I am not proud of that today. Most of this equipment received the generic prefix FuG for Funkgert, meaning "radio device". During night time contacts the lower frequency crystals should be used. I think its output is 3k. endobj I think you did a great restoration just a pity about nonsensical rules! It was used with antenna of either 1.4 to 2.0 metres antenna. 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. The men that reached the ridgeline were pondering the possibilities and problems of construction at the site. For example, according to the ARRL Ham net's directory, there's a Bartlesville, Oklahoma rag chew net that operates on 444.775 MHz on Wednesdays at 8:30 pm. << /S /GoTo /D (section.4) >> (Fug 8 + Fug 4). Excellent project. endobj He had built a little one tube power supply to replace the dynamotor. 24 0 obj 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. He also had a BC-459 that he used on 40 meters. It operated in the 19,990 to 21,470kHz (19.99-21.47MHz) frequency range with a transmission power of 5 Watts. Also known a USW receiver c1. Used by the infantry at the regimental and battalion level. I can confirm 30ish mhz, as I used them in training. 2.2. This radio came in at 181 pounds. I listened to a basketball game from an AM broadcast station in Chicago, I tuned into WWV at 2.5 MHz, and tuned in an 80 m AM net. A capacitor must operate to its specified value so it is good to test to see if the cap is functioning as a cap. Channel 2 8000 CPS teletype. Torn.Fu.i: A HF transceiver. This office would be responsible for coordinating all of the purchasing and shipping of supplies (Woodbury, 1946:68). The instrument could be . This article is a list and a description of the radio equipment. but it probably didnt make sense. Very impressive! Section 2.104 provides information about the International Table while Section 2.105 contains information regarding the US Table of Frequency Allocations. Otherwise, you should probably ask around in the area in which you plan to operate. The German-army-issued infantry radios in two main series. Reconnaissance units later in the war. << /S /GoTo /D (section.6) >> (Tactical Information \(non-coded\)) The table itself is located in Section 2.106 (this link is for informational . FuG 3: A low-band VHF receiver. In my experience, the dynamotors were often the first thing to be discarded on those sets. endobj .15 Watt output AM voice and CW. 76 0 obj endobj The Shortwave Broadcast Bands During WW2 I've always been curious about what the short wave bands sounded like in the United States during World War II. endobj Other frequencies involved include 7050 kHz LSB and 3731 kHz. Fug 25: A 2.5 - 27.5MHz receiver paired with a 3 - 16.6MHz transmitter. 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? << /S /GoTo /D (section.1) >> Otherwise identical to Torn.Fu.b. [3], Torn.Fu.k: A HF transceiver. Which Gen Set Manual do you have? At this point I had two toggle switches and a pot with a mess of wire shoved into the rear panel connector pins. The whrrrr was smoother than ever. Most of the community orbits around Electric Radio Magazine. Some radios are pre-programmed to repeater channel frequencies, and some will need to be . This radio gear was light-weight for WW2 standards, the CBY-46104 weighs only 6 lbs and is made entirely from aluminum. I tweaked the antenna coupling control, they were louder still. A 1913 aircraft with a radio, at the time considered cutting-edge equipment, had a maximum range of 2,000 yards. 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. 20 0 obj << /S /GoTo /D (section.3) >> In modern low-voltage electronics the key metric to capacitor goodness is ESR. 0uXA{z2{w By 1943 Japan controlled about forty broadcasting stations and was able to have programmes going out on shortwave around the clock on more than fifty frequencies. All paper/wax capacitors were fine. << /S /GoTo /D (subsection.4.1) >> 9 0 obj 77 0 obj The Submarine Base at Pearl Harbor, established in 1919, found itself at the forefront of war operations for the Pacific during World War II. I was also surprised by the quality of the caps in my WS19. In 1931 land was bought in Lualualei Valley for the purpose of constructing a new transmitter facility. I connected up my 20 m external dipole and powered up the radio. If I have to restuff a capacitor because its failed, in my book that means I am fitting a new component. Feldfu h: 23.1 - 28.0MHz Assault Guns and Sturmartillerie. The system would also require a transmitter building at the bottom of the valley, placement of anchors at the ridge of the cliffs, wires running from the anchors to the transmitter, and a copper grid system in the valley to assist in conducting the signals. Generally speaking much lower than common use bands today. How the Nazi army communicated wirelessly, Wireless Communications of the German Army in World War II, "Technical Manual: Handbook on German Military Forces", "Summary of Characteristics of German Decimetre Communications Equipments", https://www.dropbox.com/s/ht7s2xjb8vovnbn/article-German-Communication-UHF-DMGmichael.pdf?dl=0, https://en.wikipedia.org/w/index.php?title=Wireless_Communications_of_the_German_Army_in_World_War_II&oldid=1077340533, All Wikipedia articles written in American English, Creative Commons Attribution-ShareAlike License 3.0, This page was last edited on 15 March 2022, at 20:35. It was matched with transceiver Fug 16 for use with Sturmartillerie (self-propelled artillery). 37 0 obj radio was using frequencies up to 450 MHz, and radar was using frequencies of 1 GHz . 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. Torn.Fu.b: A HF transceiver. The initial problem was how to build a tower higher than 600 feet. Just curious. It was matched with the Luftwaffe transceiver Fug 17 in ground support operations. At one time (1976) I had it mounted in my 65 Datsun (named Ziggy), and used to work CW on 40 meters with headphones on and a key strapped to my leg. 30Mhz+ is used by the government to this day, along with other PMR Licensees. Anyone, anywhere in the world can listen in, simply by tuning a radio to the frequency 4625 kHz. stream 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. In January of 1939 the Naval Affairs Committee opened hearings on the specifics of the proposed new Naval Bases. I saw one for sale in an antique shop in Amsterdam once. 57 0 obj The b version was used by the infantry until they changed to the 'c' model radio in another band. Its just too bad that theres not as much to listen to in HF these days, unless one jumps into amateur radio. I figured out the problem after about five minutes of reverse polarity operation. KL.Fuspr.d: A VHF transceiver. FWIW according to the Tarrant ORB , 116.1mhz was the guard freq worldwide in 1946(That was DSB-AM- Amplitude Modulation). In the US, CB is 26-28 MHz, just below 10m. Tripod mast or 11 m mast. endobj Im surprised. The model is 1/48 scale and the frequencies used are 48 times higher than actual. It operated in the 2.5-3.5MHz frequency range. It was used with the same antenna as the Fug 8. That increased both the gain and the selectivity of the radio. Tower up to 50 m. Transmission power 3.5 watts. No other details available. It tuned the 40 meter ham band, and I spent many an evening with it. Was the standard kit for tank-to-tank communication within platoons and companies. Laptop Motherboard? 73 Mike AA9IL. Aviation Distress (VHF Guard) 118.000 - 121.950 MHz. Radar beacons to identify the aircraft as a friendly (identify friend or foe, or IFF). << /S /GoTo /D (subsubsection.4.4.4) >> Range was line-or-sight so the ranges reported here were assuming the antenna could "see" one another.[4][5]. This radio transmitter was 25 watts and had a range of 7 miles moving, and 10 to 15 while stopped. How the lineage of the walkie-talkie reaches from World War II to the modern cell phone. Unfortunately some leaky capacitors will measure to their specified value, so this test is not definitive. Cheers, W7PYX, Please be kind and respectful to help make the comments section excellent. endobj We are now at a point where the surplus WW2 electronics should no longer be hacked to bits. Long range radio systems to communicate back to base, typically consisting of an ART-13 transmitter and a BC-348 receiver. Range 10km AM voice to 40km CW. A Medium-wave receiver it operated in the 0,1 to 7,095kHz frequency range. (BBC Signal and Sunspots) June 1940. Fug 19: A transceiver operating in the range 3 - 7.5 Mhz. Finally someone restoring something instead of shoving in a raspberry pi. 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). The British broadcaster is turning to frequencies that still work during a communications blackout. 40 0 obj If a capacitor failed, then it must be re-stuffed. The BC-348 receiver was built in large quantities, and covered 200-500 Khz, plus 1.5 to 18 Mhz in 6 bands. Another system, and the subject of this blog piece, was the F-10 radio-controlled mine. Early in 1945, in the Northern Appenine mountains of Italy, T/5 Harvey, a radioman with the 10th Mountain Division, is carrying his WW2 . endobj Oh BTW I think reforming is only a thing since ITT came out with the first thin foil caps, such that the conductive layer was thin enough to burn out around a short. End of problem. I removed the bells (end caps) from both sides of the motor. Feldfu f: 28.0 - 33.0MHz Panzergrenadier. Spaceborne altimeters generally use frequencies in the 2-18 GHz band while scatterometers generally use frequencies between 5-36 GHz. Feldfu b2: Panzergrenadier only two tubes, no AF tube Rv2,4P700. Most places cant scan books without destroying the original unless you pay a fortune. %PDF-1.5 endobj Or both? All receiver dials, prior to WWII, were vague in accuracy and didn't provide . This innovation constituted the Contractors, Pacific Naval Air Base (CPNAB). Could this unit have seen some action in the south Pacific? Within the VHF aviation communication frequency range, the most commonly used frequencies and their corresponding allocations include: Frequency. Channel 2 8000 CPS teletype. Fug 24: A 0.1 - 7.1MHz receiver paired with a 3 - 7.5MHz transmitter. Air to ground radio communication equipment. 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. With that said, ESR testing is useful for testing the electrolytic power supply capacitors in tube equipment. Frequencies from 1-11 GHz are frequency bands where SAR imaging radars operate. It was used with a frame antenna on various reconnaissance units. Number ranges were not unique across the services so sometimes different equipment used by different services had the same FuG prefix. There are plenty. It operated in the 4.5-6.67MHz frequency range. By the winter of 1940 Congress began to understand the full impact of the Pacific turmoil and approved a bill that included $31 million specifically for the Pacific island bases. So my unit has some historical meaning and context. (BBC Radio Signal Prediction) It operated in the 24.1 to 25MHz (24100 to 25000kHz) frequency range with a transmission power of 5 Watts. Later, I built some crystal controlled converters and use the BC-453 as a tuneable IF. MUF: Maximum Usable Frequency MW: Medium-wave SW: Short-wave VoACAP: Voice of America Coverage Analysis Program 4.2 Overview Radio propagation is the mechanism by which the EM waves (also known as radio waves) are transmitted, or propagated, from a point on the earth to another directly or through various layers of the atmosphere. 1. As an aside, this included radio-controlled tanks. On August 9th the contract (No y-3550) was approved and the Contractors began work. /Filter /FlateDecode Along with the previously erected Naval station at Lualualei Valley was a naval communications station at Wahiawa, near Schofield Barracks. It operated in the 1,130 to 3,000kHz frequency range with a transmission power of 100 Watts. U-Boats were cramped and had limited power. Lets see how I did. endobj Learn how your comment data is processed. Operating on the 1250 - 1390MHz band, two channels. endobj During a siege on enemy territory, the Aztecs warriors would sound the "Death Whistle" in an effort to cause their . It was running but not well. To check for value and leakage with one test device you must resurrect an old piece of test gear known as the capacitor checker. It was usually used with a two-metre antenna. Used at the battalion to company level of the Panzergrenadier. endobj Military radar band nomenclature is widely used today in radar . Radio Communications in World War II Naval radio communication played a vital role in World War II efforts and Hawaii's defensive installation. Thereafter version b1 was used by the Pioneers. er /fr (h)bandr/. If the vast majority tested good, why did you have to replace all but three capacitors? Pomeroy and Company, Inc. On July 11th, 1940, a new bill was approved (Woodbury, 1946:140). By the end of the war, the Hellcat had a 19:1 kill ratio over Japanese aircraft. So, I suppose in WWII it would have been Baker!) (Very Low Frequency band, VLF). Air traffic controllers and airline pilots use frequencies between 118 MHz to 137 MHz to communicate. endobj Newer computer modeling is also used. Replacement for Torn.Fu.g.[3]. Rule 3. is generally totally incompatible with rule 1. Dynamotor worked perfectly, just like new again! Main advantage over the FuG 5 was greater range. Great project! Fug 21: A 0.1 - 10MHz receiver paired with a 2.5 - 7.5MHz transmitter. This equipment provided for 125 radio channels at 50kHz channel spacing. 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? England. 56 0 obj 0.7 Watt output AM voice and CW. It operated in the 1.87 - 3MHz frequency range. News will be read in English, which the BBC. The station would be able to obtain long range signals because it would use a very low frequency. endobj It is tough to test capacitors correctly, it requires multiple tests to troubleshoot for bad capacitors: Given all of that, the keys to troubleshooting tube equipment are to test the capacitance of each cap to verify that it is functioning and test the leakage to make sure it is not leaking current between circuits. 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. R1155 frequency range: 75 kHz to 18.5 MHz depending on the model variant. FuG 6: A high-band HF/low-band VHF transceiver. endobj In 1936 the Lualualei Valley transmitter was activated (HABS, 1997:6). Anyone have some cool facts to share? The results were actually quite nice. 17 0 obj The parasets the British SOE sent to operatives in occupied Europe used low HF, 3-7 MHz. 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. Unit must run off of its dynamotor, as it was intended. It was usually used with a 1.4 metre antenna. (Acronyms) In 1920 a receiver station was constructed at Wailupe. (Even if it was just the dial lights in some!). A radio user who intentionally transmits communications on unauthorized spectrum outside the limits of a normal channel frequency or band. Range up to 50km. My grandmother was a ham during WW2, my grandfather was in the signal corps. Reddit and its partners use cookies and similar technologies to provide you with a better experience. 72 0 obj (Air Drops) Actually, the 3D printing would solve a nasty problem in making WW2 gear operate again; finding the connectors! The ART-13 is one of the most popular WW2 high frequency radio . On May 25th, 1939 Congress passed an appropriation bill providing 63 million dollars for Naval Air Bases. FuG 5: A high-band HF/low-band VHF transceiver. $79.99 There would be no bidding on the island contracts. << /S /GoTo /D (subsection.4.3) >> It was based on the British TR1143 and was used by the RAF as the TR5043. I made a lot of contacts on it. It operated in the 36.67MHz frequency range. Electronic warfare receivers to detect enemy radar signals. B^). It was usually used for communication with a Fug 8 in the same installation. I can do 36-inch wide scans and prints from a plotter if needed. Torn.Fu.d2: A VHF transceiver. Chapter 10 discusses the principle of both pulsed and CW radar systems and radar parameters. 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 was used for by observation teams of the Sturmartillerie to communicate with artillery units. Infantry. Frequency License Type Tone Alpha Tag Description Mode Tag; 143.700: M: USAF TB CC/Fuel: Cross Country/Refueling/Delta: AM: Military: 139.225: M: USAF TB Diamond: Diamond Formation Very cool! The Japanese conception of radio intelligence is illustrated by the following quotation from the 6th Communication Unit Secret Order No. Stephen Chasey liked LIDL PARKSIDE Battery hacks. Range 5km AM voice.[1]. Besides if you really want the original experience.. it didnt have 70 year old caps in it 70 years ago! Most likely Im the odd person put on the topic. 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 (subsubsection.4.4.3) >> (BBC Medium Wave and Short Wave Broadcasting) Today we use Mega Hertz which are totally incompatible.. just kidding. The CPNAB had an interest in Haik Valley as soon as the war broke out. 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. Channel 1 Voice or 5500 CPS teletype or three channels teletype. The later was tricky, with some high, medium, and low-band-specific alignments required. Ive become a believer in testing all the caps now. The one-way voice link (OWVL) described a covert communications system that transmitted messages to an agent's unmodified shortwave radio using the high-frequency shortwave bands between 3 and 30 . These long-haul contacts led to 1927-1928 international conferences that resulted in the designation of what essentially are today's 80 . Drop me a note off line and I may be able to help with the scan. I have a 7mhz version of this receiver (black navy) that I used in my novice days in 1976. The PNAB was initiated in the 1930s as turmoil was mounting in the Pacific. 0.6 Watt output AM voice. If run out of trim, I might do a little naughty and just strap a little booster cap across it. The station was highly experimental and also highly classified. I used to be all about modding things to unrecognizability but that was when new gear was so much more expensive. This unit was also used by motorcycle troops in the first half of the war. FuG 9: A transceiver, operated in the 0.1 - 7.1MHz (100kHz - 7100kHz) range. Feldfu b: 90-110MHz Used by the infantry used in two versions. No holes can be drilled, either on the chassis or on the plug-in. It takes a lot FuG 2: A high-band HF/low-band VHF receiver. endobj 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. Goebbels also used radio broadcasts to spread the word of Nazism abroad. In the near future the unique and innovative organization of the CPNAB set forth by Admiral Moreell would prove indispensable for expeditious construction in Hawaii after the 1941 bombing of Pearl Harbor (Woodbury, 1946:55). However, the Naval fleet expansion into the Pacific created communication needs that were not yet being met. It is a criminal offensive to hike the Stairs, and you could be fined a minimum of $1000 if you are caught. That would be a good station to calibrate his dial on. Modern direction finding of both communications and noncommunications signals covers a much wider range of frequencies. Various radios were used for clandestine communications by resistance groups in WWII, including the Norwegian OLGA and the British Paraset, which was supplied to resistance groups in France, Belgium, and the Netherlands. The SCR-536 was a two-way, portable radio used extensively by United States armed forces during World War II. It operated in the 27,000 to 33,300kHz (27-33.3MHz) frequency range with a transmission power of 20 Watts. Range 1.5km. << /S /GoTo /D (subsubsection.2.2.1) >> With such a receiver the young ham would be able to tune in radio traffic from all over the world and practice listening to Morse code (CW) transmissions. FuG 15: A HF receiver. Range 25km AM voice to 140km CW using the nine-metre antenna, the station had to be stopped to use this antenna. Mine came out of a old sheriffs car. endobj (Looking at you, [MisterM]!). Power 22 V AC 50Hz 300 VA. Rudolf - DMG 3 G: 'Heavy' link. FuG 16: A HF transceiver (receiver/transmitter) used in the command vehicles of Sturmartillerie units. Keebin With Kristina: The One Where Shift (Really) Happens, Retro Gadgets: Make Your Scope Dual Channel, Supercon 2022: Selling Your Company And Not Your Soul, Hackaday Podcast 207: Modular Furniture, Plastic Prosthetics, And Your Data On YouTube, Antenna Hidden In Holiday Lights Skirts HOA Rules, Collection Of Old Films Rescued For Preservation, Cat Feeder Depends On RFID To Keep The Peace At Dinnertime. /Length 783 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. (BBC Messages) << Range was approx 23km when using AM voice and 34km when using CW. Navy, 1946:139). 4 LiamCH91 2 yr. ago .15 Watt output AM voice and CW. In the 1920's and 1930's the Russians developed a number of radio-controlled systems. 13 0 obj Its a long story, but an abused ARC5 dynamotor adapted for use powering an autopilot got me an interesting gig on a sailing yacht back in the 60s. Electromagnetic radiation falls . ahh jeez, that was meant at top level, idk how it ended up as a comment 3 levels down. Not both. (Tactical Information) Took first prize in my category! The major difference between German Army tank sets and US Army tank sets was the American use of FM for the high-HF/low-VHF bands. No replacement of any components whatsoever. American ingenuity in developing strategies that maximized the impact of their planes strengths and minimized the consequences of their weaknesses was a key factor in stopping Japanese expansion in 1941. Its tedious, but even photographing each page with a digital camera is better than nothing. Next I had to locate documentation. The only exception for me is that historical books and papers should be preserve, so we can know what has preceded us. Everything from receivers to transmitters that ran on low voltage DC busses used dynamotors to generate the 200-1000V, or more, needed for operation. 4 0 obj Nice restoration. It is not easy hooking-up military surplus radios because they typically use multi-pin multi-use connectors for power and other controls.

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