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Echophone Commercial EC-1 Shortwave Receiver (1941) |
When first appeared in early 1941 with its sensational $19.95 price tag, EC-1 was a general purpose shortwave receiver everyone could afford. In late 1941, EC-1 advertisement on QST changed to the famous "Hoggarth" series; EC-1 started to serve as military entertainment. Then on the next month, a word "National Emergency" was replaced by a word "War". |
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Echophone Commercial EC-1A/B Shortwave Receiver (1946) |
Hallicrafters did not name its own brand to this low-priced 6 tubes set, being afraid of its reputation degraded with marginal performance. In the reality the radio worked pretty well, and its basic design led the way to the famous S-38 series. The EC-1A here needs cosmetic refinishing, and an EC-1B is awaiting the service. |
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Hallicrafters S-41G "SkyRider Jr." Shortwave Receiver (1946) |
Boys knew that the Echophone EC-1A/B was designed and manufactured by Hallicrafters, and of course, they also wanted the name of the Hallicrafters on his radio. The company answered to such voices by introducing the S-41G/W "Skyrider Jr." which is identical to EC-1B except its color and the Hallicrafters logo. The gray version S-41G here plays very well, although no apparent maintenance was given for these 50 years. |
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Hallicrafters S-38C Shortwave Receiver (1953) |
Although it's just a mere 5 tubes single superhet, admirable performance, appealing style and affordable price guided many youngsters into the world of wireless communication and electronics. Some Japanese manufactures copied its unique design. The unit here still requires considerable effort for electric and mechanical work. |
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Hallicrafters SX-96 Shortwave Receiver (1955) |
Loaded with complete double superhet and dedicated USB/LSB position, this neat general coverage receiver provides smooth tuning, sharp selectivity and stable operation for amateur communication. The unit here had suffered distorted AM audio, cured by altering the component values used in the detector circuit. |
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Hallicrafters S-20R SkyChampion Shortwave Receiver (1939) |
This popular midrange prewar model employs a 6K8 frequency converter tube which electrode arrangement is quite unique. The receiver configuration is almost equivalent to the Japanese models in early 1960s such as famous Trio 9R-59, it will be interesting to play side by side with them. The radio needs servicing, replacing all the small components may be necessary. |
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Lafayette HA-55A Aircraft Receiver (circa 1964) |
Compact vacuum tube airband receiver uses a Nuvistor as its RF amplifier. Circuit was modified by someone so that it could use 12AT7 instead of 6AQ8. Severe image interference may be attributed to this modification. |
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Lafayette HA-63A Shortwave Receiver (1966) |
This clean 1-RF 1-IF single superhet showed miserable performance when it arrived at our lab, although the receiver had been recapped by the previous owner. By using a brand new signal generator with frequency counter deployed to the lab, circuit alignment was performed which made the radio vivid and strong. |
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Lafayette HA-230 Shortwave Receiver (1964) |
An export version of famous Japanese Trio 9R-59. A dusty, broken, only-to-buzz unit was restored to a clean performer. Strange AGC action was cured by replacing an AGC filter cap and a 6BA6 which suffered a grid emission. It has a band spread dial calibrated to the amateur bands, but receiving SSB is far from ideal. |
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Lafayette HE-80 Shortwave Receiver (1964) |
An export version of the Trio JR-60, an upgraded 9R-59. This single superhet has 14 tubes, including product detector, voltage regulator and 6m crystal converter. Recapping revived crisp audio, and the very poor sensitivity was found to be caused by the IFT misalignment possibly done by an inexperienced user. |
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Lafayette HA-225 Shortwave Receiver (1964) [UPDATED] |
The HA-225 appeared on U.S market in 1964 earlier than the HE-80 which original introduction plan was somehow delayed. HA-225 and HE-80 are quite similar. HA-225 covers longwave instead of medium wave band, and the FM reception mode is omitted. In addition, it has many minor design changes internally, therefore HA-225 may be called an improved version of HE-80. |
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Allied A-2515A Shortwave Receiver (1970) |
Legendary Trio 9R-59 certainly flowered the popularity of amateur radio in Japan. It had, however, some shortcomings as a SSB receiver. How it would look like, if it was fully improved with solid state technology? The answer was the Allied A-2515A. |
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Collins 75S-1 Amateur Radio Receiver (1958) |
This 10 tubes receiver set the new standard of the amateur radio equipment. So called "Collins Type" double superheterodyne and a mechanical filter, effective and carefully designed circuit. The unit here had suffered a bad SSB reception, possibly due to the capacitor leakage in the product detector. Amazingly it healed by itself! |
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Collins 51S-1 Shortwave Receiver (1959) |
Clean professional look and military quality, this rock solid receiver with 1kHz readout capability is certainly one of the best general coverage shortwave receivers ever produced. Missing case and wrong dial knob was the reason of the price of this unit lower than average, but this dream receiver is working prominently just as the emblem promises. |
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Hammarlund HQ-170 Amateur Radio Receiver (1958) |
This big receiver certainly has a flavor of the BoatAnchors. Triple superhet, total of 5 IF amplifier stages, and panel full of controls allow the user to adjust all the characteristics of the receiver. One of the IFTs of this unit burnt during the service, but was able to be fixed. Frequency drift is still annoyance, more effort should be paid. |
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National (Panasonic) CRV-1 Shortwave Receiver Kit (1960) |
Sold in kit form somewhat resembles to the National NC-173. Configuration is 1-RF 2-IF single superhet, and almost identical to the Trio 9R-59. CRV-1 somehow did not sell well, but many JAs recall it was much stable than Trio. The unit is being serviced now. |
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CRV-1/HB Homebrew Shortwave Receiver (1960) |
Matsushita Electric produced high quality components (such as tuning caps and coil packs) for amateurs. Data sheets of those parts showed an example how to build a shortwave receiver with them. The receiver here was built based on it. Since the data sheet example later became the CRV-1, I named this homebrew as CRV-1/HB. |
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Heathkit GR-64 Shortwave Receiver Kit (1964) [English comment] |
This 4 tubes kit was a cheap buy at a hamfest, showed very poor performance in all aspects. Changing some of the component values from the original design was necessary. Poorly designed dial mechanism prevented smooth tuning. This radio was indeed a great educational kit as I had to study a lot of radio engineering textbooks until I could finally fix it. |
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Sony ICF-5500 Shortwave Receiver [ENGLISH PAGE] |
Although the shortwave was not the priority for the 5500, this portable receiver defined the basic flavor of legendary Sony SkySensor series. Once disassembled, you'll enjoy solving a puzzle - well, it's a Sony. No electronic service was required for this unit, but the sluggish dial mechanism should be fixed someday. |
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Sony ICF-5800 Shortwave Receiver |
Clearly aiming the shortwave listening, the SkySensor 5800 fueled the shortwave boom in Japan back in 1970s. Its cool professional like styling, double speed reduction tuning with moving-film dial, covering up to 30MHz and a BFO; all gave the thrill of the shortwave. The unit had suffered distorted audio and sluggish dial, which were cured after the servicing. |
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Sony ICF-5900W Shortwave Receiver (1975) [ENGLISH PAGE] |
The masterpiece of Japanese portable in middle 1970s features double superhet, 5kHz readout capability with crystal calibrator and bandspread dial, and even a product detector. Its unique circuit design uses a 10.7MHz filter as FM IF and shortwave 1st IF bandpass. Realignment solved a problem common to the surviving 5900. |
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Panasonic RF-877 "Cougar No.7" Shortwave Receiver |
Enhanced AM (MW) capability provided by the Gyro Antenna,
tuned RF amplifier and RF Gain Control - all helpful to midnight AM listening and DXing. This was my first practical shortwave receiver, and I struggled with it - covered only up to 12MHz, no bandspread, loose selectivity and no BFO - Shortwave was not focused in this radio, but at that time Japanese shortwave boom was about to erupt - The Cougar 118 and 115 would follow. |
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Panasonic RF-1150 "Cougar 115" Shortwave Receiver [ENGLISH PAGE] |
This best seller portable was a rival to the ICF-5800, adding low-band shortwave coverage. Fine tuning is mere a small trimmer varying local oscillator frequency. This radio with audio equipment like silver front panel provides pleasant audio, best for cozy listening rather than serious DXing. |
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Toshiba RP-1600F Try-X 1600 Shortwave Receiver [ENGLISH PAGE] |
Low priced entry model covers only up to 12MHz, having no BFO, no external antenna terminal. Although the built-in "CAL" marker and dial ring with sub scale of international broadcast bands promised better frequency readout, it did not appeal well to shortwave fans. This unit is in poor condition inside and outside, wondering if any effort would be worth. |
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Design GO KK-939B Shortwave Receiver [ENGLISH COMMENTS] |
Replacement to my trustworthy travel companion ICR-4800 is this low priced,
pocket sized radio with digital readout and built-in alarm clock.
The original version of this radio has a flashy looking, but the version here has a chic color scheme.
The radio, however, suffered a low sensitivity on the first day of its second journy to Europe.
The manufacturer's website states that the radio uses "Advanced SMT technology", but... |
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Sideband Engineers SB-33 Bilateral HF SSB Transceiver (1963) |
Founded by Faust Gonset, SBE produced this ambitious compact SSB transceiver for mobile use. Transistorized except final power stage, Collins mechanical filter,and unique bilateral circuit design. SB-33 is called the world's first practical transistorized amateur radio transceiver. |
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Sideband Engineers SB-34 Bilateral HF SSB Transceiver (1966) [ENGLISH PAGE] |
Basic concept is kept, SB-34 was the refined and improved model of the SB-33. Now the DC12V inverter power supply is built-in, and the panel design is much sharp than its predecessor. In the lab two of this undervalued equipment are waiting back on the air. |
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Linear Systems SBE SB-36 HF SSB Transceiver (1972) |
After the short lived SB-35, SBE decided to name an imported Japanese model SB-36. This innovative digital readout HF transceiver has a hybrid construction, using some vacuum tubes in signal path as well as the final amplifier which accepts 500watts of input power. |
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Trio (Kenwood) TS-820S HF SSB Transceiver [NEW] |
My first attempt to get on the HF with brand new TS-820X failed because I cound not prepare a proper antenna. Realizing the lack of the skill, knowledge, experience and budget, defeated, I sold the radio to a local station. So ended the 1st season of my amateur radio life. 30 years later, I decided to try again. The unit here was obtained at a hamfest. It worked fine except unstable digital readout, until its main fuse blew with large slap sound. My true rechallenge had begun. |
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Trio (Kenwood) TS-600 6m All Mode Transceiver |
Full solid state 6m all mode transceiver with its stylish appearance was on the top of 6 meter equipments when I got my license. My desire to use this radio didn't go away for 27 years and finally it arrived at my lab. |
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ICOM IC-502 6m SSB Portable Transceiver |
My first radio on the air was an IC-502. With 3 element yagi mounted on top of the roof, normally the communication range was less than 30 miles or so. However once sporadic-E layer forms, distant stations more than 400 miles could be worked easily and clearly with only 3W of output power and built-in whip antenna. This is the wonder of Six Meters. |
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ICOM IC-T31 430MHz FM Handheld Transceiver [NEW] |
Purchased in 1993 to communicate with my teammates when we participate motorsport events, this radio was rarely used to make normal QSO as FM was not my favorite. Nevertheless I always took this radio with me and monitored K6FB repeater every night, until I bought a new Alinco 2m/70cm dualbander. |
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Yupiteru 50-H5 Hands-Free Communicator |
Designed to be a convenient tool for a short-distance hands free communication, this 50MHz FM transceiver has an output power of only 10mW; maximum coverage is approx. 500 meters; or 1/4 miles ---- the operation manual has a block diagram and technical information so that the user can register this radio as an amateur radio transmitter (Japanese government requests to do so) but I wonder how many of the users, if not nobody, complied it... |
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Benmar Navigator 555A Direction Finder [ENGLISH PAGE] |
Manufactured by Koden and possibly in cooperation with Bendix, this civilian marine equipment carried a cheap price tag at a hamfest. Its BC band sensitivity is so wonderful, that it could be used for medium wave DXing if selectivity and dial mechanism is improved. |
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Sony FX-402A TV/Radio Cassette Recorder |
Stylish multifunction portable with cassette and monochrome TV, the radio also coveres shortwave. After toggling switches for a while to clean their contacts, all functions including TV revived. Light maintenance, realignment and cleaning will make this set fully servicable. |
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Toshiba RT-4800 "Actas 4800" Cassette Radio Recorder |
Typical Radio Cassette Recorder with 2 way speaker which is much larger than modern CD Radio combo, so the sound is very good. Overhauling the tape mechanism revived nice tape audio quality, weak operation of the tuning indicator was found to be caused by a defective PCB pattern. |
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General 6S-10 Superheterodyne Radio (1953) |
Typical Japanese home radio back in 1950s. This superhet with tuning eye has nice wooden case, contains 5 "ST" style tubes and a tuning eye. Obviously the radio had experienced at least two times of emitting smoke, all of the components under the chassis needed to be replaced. Completely dead receiver came back to life again after the rebuilding. |
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Kenwood KR-9340 4channel Stereo Receiver [UPDATED] |
This clean and neat audio equipment was born in amid of the 4 channels fever. Being ready for various 4 channels format, the latest CD-4 decoder was provided as an extension unit. The receiver revived from complete silence, being used several years, and again waited a service for a cure of hum. 7 years later hum problem was solved by replacing another electrolytic. |
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Several Popular Tabletop Radios | In this page several popular tabletop radios are introduced. They include Zenith F510F, GE C-43, RCA Victor Model 56X, GE Model 408 and Japanese government regulated type-2 model manufactured by Ohmori-Seisakusyo. |