This is a Philco 87 Highboy that dates to around 1929/1930. Tuning is simplified compared to a multi-stage TRF design, and only two stages need to track over the tuning range. Great buy! [48][102] After this it became the standard method of receiving CW radiotelegraphy. Dimensions: 18 W x 11 H x 12.5 D 1393, 87 L.Ed. Copyright 1995-2022 eBay Inc. All Rights Reserved. [58] The first tube receivers, invented by De Forest and built by hobbyists until the mid-1920s, used a single Audion which functioned as a grid-leak detector which both rectified and amplified the radio signal. This Panasonic Red Toot A Loop AM Radio Model R-72 Vintage 1970s Novelty is available on Etsy. Dimensions: 11 W x 6 H x 6 D Features: In working condition with original parts Features: Picks up AM and FM stations Love the bamboo shelf . Therefore, Marconi is usually given credit for building the first radio receivers. It is used with an antenna. Dimensions: 22.5 W x 9 H x 8.25 D This Vintage 1940s Philco 40-155 Large Tube Radio is available on Etsy. Websuvgoodspeedsuvsuvgood speed Restored and Working is currently available on Etsy. [27][31][32][33] Vintage Antique Gramophone Voice Box /Sound Box Needle. Year Manufactured: c. 1925/1926/1927 [147], "AM/FM" redirects here. Always wanted one and there hard to find. Antique 1920s EARLY!! I have my great aunts bamboo shelf. Remember the antique Thebes stool I found a few weeks ago at a local antique store? Oh, Jeff, you are like Kirk in so many ways! [25][29] The coils usually had taps which could be selected by a multiposition switch. De Forest believed that ionization of residual air was key to Audion operation. Besides some minor wear and tear from age, the radio is in good working condition. It dates to 1932 and would fit into any home with an Art Deco theme. I see them for over 200$ and always have to tell my husband what a bargain I found. Features: Restored and in good working condition WebHerbert H Horn (Tiffany Tone) Model 55 Antique Radio. ANTIQUE SILVERTONE WIND-UP SUITCASE RECORD PLAYER WORKS GREAT XTRA NEEDLES READ! Price: $189. Since Nike has always been a very popular, Aprons have been a staple homeware item for centuries. Connected between the antenna and the detector it served as a bandpass filter, passing the signal of the desired station to the detector, but routing all other signals to ground. [34][35] Oliver Lodge and Alexander Popov were also experimenting with similar radio wave receiving apparatus at the same time in 18945,[32][36] but they are not known to have transmitted Morse code during this period,[27][30] just strings of random pulses. Its about enjoying what I can do and letting go of what I cant. So spark transmitters could not transmit sound, and instead transmitted information by radiotelegraphy. Features: In good working condition Features: Untested by seller According to the seller, the radio powers on, but does not pick up any stations. This Antique 1930s Tube Radio Grigsby Grunow Model 500 Chrome Grill is available on eBay. Not only did it add fullness to the wreath, but it added [], I got a text from Calvin on December 1 and it was one word. . Many other types of modulation are also used for specialized purposes. WebIn Australian English, "record player" was the term; "turntable" was a more technical term; "gramophone" was restricted to the old mechanical (i.e., wind-up) players; and "phonograph" was used as in British English.The "phonograph" was first demonstrated in Australia on 14 June 1878 to a meeting of the Royal Society of Victoria by the Society's Features: 100% restored The case is made out of walnut and in excellent condition. Because this radio is nearly 100 years old, it only picks up AM frequencies and it also needs external speakers. The seller has added a mini-jack, which means the radio can be connected to modern devices. Antique 1920s Radio ~ ATWATER KENT ~ Breadboard Radio, Antique 1920s Radio ~ ATWATER KENT ~ Breadboard Radio, 9. It is an Atwater Kent breadboard radio from 1923 and it is in excellent condition. The radio console already has a Utah speaker hooked up to it. In a digital receiver the IF signal is sampled and digitized, and the bandpass filtering and detection functions are performed by digital signal processing (DSP) on the chip. Love it, but unfortunately I dont have a place for it, so it is in storage. The signal strength (amplitude) of the radio signal from a receiver's antenna varies drastically, by orders of magnitude, depending on how far away the radio transmitter is, how powerful it is, and propagation conditions along the path of the radio waves. With two great finds at the same shop, both for great prices, I dont imagine you want to share the name of that shop with me. I found it at an antique store for $7.00 and thought it was just cool to leave on the shelf. DSP is used in cell phone systems to reduce the data rate required to transmit voice. The crystal radio used a cat's whisker detector, invented by Harrison H. C. Dunwoody and Greenleaf Whittier Pickard in 1904, to extract the audio from the radio frequency signal. The radio is untested, but the seller says that it looks like all the internal parts are there. Dimensions: 2.75 W x 4.25 H x 1.375 D The tube also acted as a grid-leak detector to rectify the AM signal.[108]. This shelf is glorious and what a deal!!! IC chips reversed the economics of radio design used with vacuum-tube receivers. Vintage Mid-Century 1950s Zenith AM/FM Tube Radio, Vintage Mid-Century 1950s Zenith AM/FM Tube Radio, 7. [141], The development of the bipolar junction transistor in the early 1950s resulted in it being licensed to a number of electronics companies, such as Texas Instruments, who produced a limited run of transistorized radios as a sales tool. Dimensions: 11.25 W x 6.25 H x 3.25 D The signal from the spark gap transmitter consisted of damped waves repeated at an audio frequency rate, from 120 to perhaps 4000 per second, so in the earphone the signal sounded like a musical tone or buzz, and the Morse code "dots" and "dashes" sounded like beeps. [81] His 1900 British #7,777 (four sevens) patent for tuning filed in April 1900 and granted a year later opened the door to patents disputes since it infringed on the Syntonic patents of Oliver Lodge, first filed in May 1897, as well as patents filed by Ferdinand Braun. Price: $150 + $20 shipping. Features: Original parts in working condition However, the radio is untested. Price: $29.95 + $9.53 shipping. The continuous wave radiotelegraphy signals produced by these transmitters required a different method of reception. The wireless lighting system consisted of a spark-excited grounded resonant transformer with a wire antenna which transmitted power across the room to another resonant transformer tuned to the frequency of the transmitter, which lighted a Geissler tube. This 1956 Zenith Z512G Vintage Dual Speaker Tube Radio Grey Working is available on Etsy. can be dynamically changed by software to react to changes in the environment; these systems are known as software-defined radios or cognitive radio. This Vintage Art Deco Mid-Century 1950s Ultra Rare Olympic Bright Red Tube Radio is available on Etsy. This American Bosch Vintage Antique 1930s Radio Model 200 is available on eBay. The wax Edison record is also such an interesting find! Year Manufactured: 1960 According to the seller, almost all of the record player is original. Due to the fragility of this radio, the seller is only accepting local pickup. WTOP delivers the latest news, traffic and weather information to the Washington, D.C. region. 8 Oldest Musical Instruments in the World This is done by a circuit called a demodulator (detector). Dimensions: 11 W x 7 H x 5 D [104] By the 1930s, the broadcast receiver had become a piece of furniture, housed in an attractive wooden case, with standardized controls anyone could use, which occupied a respected place in the home living room. This Bluetooth Radio Bakelite Vintage 1950s Montgomery Ward Hallicrafter 5R17 Table Radio is available on Etsy. The seller has not tested the radio and is selling it as-is. Modulation is the process of adding information to a radio carrier wave. The radios case is made out of lacquered wood and features mother-of-pearl inlay designs. As of 2017, 38 countries offer DAB, with 2,100 stations serving listening areas containing 420 million people. [81] To overcome this drawback he developed a four circuit system with tuned coils in "syntony" at both the transmitters and receivers. To separate out the desired radio signal, the bandpass filter allows the frequency of the desired radio transmission to pass through, and blocks signals at all other frequencies. 91-99, Howard B. Rockman, Intellectual Property Law for Engineers and Scientists, John Wiley & Sons - 2004, page 198, Hong, Sungook (2001). It dates to 1932 and cosmetically, is still in excellent condition. Each Audion stage usually had a rheostat to adjust the filament current, and often a potentiometer or multiposition switch to control the plate voltage. Year Manufactured: c.1959 Features: In working condition with original parts or Best Offer. Western Union), cashier checks, money orders, shipping. The horn on this record player is made out of oak and is incredibly beautiful. [116][117] This made it a more sensitive detector[116] but also caused its electrical characteristics to vary during use. It's easy to use, no lengthy sign-ups, and 100% free! To achieve both good image rejection and selectivity, many modern superhet receivers use two intermediate frequencies; this is called a dual-conversion or double-conversion superheterodyne. The Fender Stratocaster is the instrument of choice for guitar legends such as Jimi Hendrix, Eric Clapton and David Gilmour. Radio waves were first identified in German physicist Heinrich Hertz's 1887 series of experiments to prove James Clerk Maxwell's electromagnetic theory. [104][106] Convenience features like large lighted dials, tone controls, pushbutton tuning, tuning indicators and automatic gain control (AGC) were added. Features: All original parts in beautiful condition Not to be confused with, One of Marconi's first coherer receivers, used in his "black box" demonstration at Toynbee Hall, London, 1896. According to the seller, the radio has been completely restored and is in full working condition. The seller picked it up from an avid radio collector. This is a vintage portable radio from Magnavox. [132] Since the bandwidth of a filter with a given Q is proportional to the frequency, as the receiver is tuned to higher frequencies its bandwidth increases.[14][18]. The receiver uses electronic filters to separate the desired radio frequency signal from all the other signals picked up by the antenna, an electronic amplifier to increase the power of the signal for further processing, and finally recovers the desired information through demodulation. The seller picked this vintage Sears Silvertone alarm clock radio up at an estate sale and has dated it to the 1960s. This is a little vintage portable radio from Sanyo that dates to around 1975/1976. [2][3][4] While AM stereo transmitters and receivers exist, they have not achieved the popularity of FM stereo. This page was last updated: 11-Dec 07:08. The 3 large knobs adjust the 3 tuned circuits to tune in stations, Atwater-Kent TRF receiver from the 1920s with 2 RF stages, Tuning a Neutrodyne TRF receiver with 3 tuned circuits, During the 1940s the vacuum tube superheterodyne receiver was refined into a cheap-to-manufacture form called the ", Marianne Fedunkiw, Inventing the Radio, Crabtree Publishing Company, 2007, page 17, Jed Z. Buchwald, Scientific Credibility and Technical Standards in 19th and early 20th century Germany and Britain, Springer Science & Business Media - 1996, page 158, Cecil Lewis Fortescue, Wireless Telegraphy, Read Books Ltd - 2013, chapter XIII, Peter Rowlands, Oliver Lodge and the Liverpool Physical Society, Liverpool University Press - 1990, page 117, Jed Z. Buchwald, Scientific Credibility and Technical Standards in 19th and early 20th century Germany and Britain, Springer Science & Business Media - 1996, pages 158-159, Thomas H. Lee, The Design of CMOS Radio-Frequency Integrated Circuits, Cambridge University Press - 2004, page 35, Hong, Sungook (2001). Each type of modulation requires a different type of demodulator. One of the most important ease-of-use innovations was "single knob tuning", achieved by linking the tuning capacitors together mechanically. Year Manufactured: c.1955 Year Manufactured: c.1950/1951 According to the seller, all components have been tested and weak parts were replaced. Modification Description . "/> ji ak fe vd jy uj lw. I love elements of antique bamboo in any room. Cosmetically, the radio is in good condition, but does have a small hairline crack on the side. Come and visit our site, already thousands of classified ads await you What are you waiting for? This next antique radio is a rare find as it was found brand new in its original box. Oleg won a free entrance to the Portuguese Backgammon Open to be held on June 15-19, 2011; will he make to the Grand Finale? The seller says that the radio appears to be in good shape and has all of its original parts. This is an antique Zenith AM/shortwave radio from 1942 that has been fully restored and updated. p. 48, Susan J. Douglas, Listening in: Radio and the American Imagination, U of Minnesota Press, page 50. United States v. Marconi Wireless Telegraph Co. of America. Another advantage of the circuit was that the tube could be made to oscillate, and thus a single tube could serve as both a beat frequency oscillator and a detector, functioning as a heterodyne receiver to make CW radiotelegraphy transmissions audible. Features: In semi-working condition Some of the earliest portable tube radios were the Winn "Portable Wireless Set No. It has AM reception and all of its original knobs and wiring. The Court rejected the Marconi Company's suit saying they could not sue for patent infringement when their own patents did not seem to have priority over the patents of Lodge, Stone, and Tesla.[32][70]. The first loudspeakers were produced around 1915. This beautiful antique radio is an American Bosch Personal 200A Treasure Chest model. Regeneration could not only increase the gain of the tube enormously, by a factor of 15,000 or more, it also increased the Q factor of the tuned circuit, decreasing (sharpening) the bandwidth of the receiver by the same factor, improving selectivity greatly. Antique 1920s DuoDyne 900 5-Tube Two-Stage Radio #471, Antique 1920s DuoDyne 900 5-Tube Two-Stage Radio #471, 5. The Audion (triode) vacuum tube invented by Lee De Forest in 1906 was the first practical amplifying device and revolutionized radio. To give enough output power to drive a loudspeaker, 2 or 3 additional vacuum tube stages were needed for audio amplification. Price: $229. This RCA Victor 75X11 AM Tube Radio 1940s Art Deco Vintage Antique Radio is available on eBay. [82] A further clarification and re-submission was rejected because it infringed on parts of two prior patents Tesla had obtained for his wireless power transmission system. See todays top stories. A defect in many early vacuum-tube receivers was that the amplifying stages could oscillate, act as an oscillator, producing unwanted radio frequency alternating currents. Vintage Sharp Tube Radio PF-116 PAGODA Hayakawa Denki Mother-of-Pearl Inlay, Vintage Sharp Tube Radio PF-116 PAGODA Hayakawa Denki Mother-of-Pearl Inlay, 2. Excellent Condition Victrola Antique Record Player Cabinet. It was manufactured by Sharp sometime around 1955 and is one of its Pagoda models. This lower frequency is called the intermediate frequency (IF). In different countries DAB stations broadcast in either Band III (174240MHz) or L band (1.4521.492GHz). WebAbout Our Coalition. Restored and Working, Zenith Bakelite Case AM & FM Bands Radio. In 1901 Reginald Fessenden had invented a better means of accomplishing this. There will be a RF front-end to supply an intermediate frequency to the software defined radio. Both primary and secondary were tuned circuits;[63] the primary coil resonated with the capacitance of the antenna, while the secondary coil resonated with the capacitor across it. I recently upgraded my iPad and found that most of the issues were because it was older. VINTAGE 1960S SEARS SILVERTONE TRANSISTOR CLOCK RADIO, VINTAGE 1960S SEARS SILVERTONE TRANSISTOR CLOCK RADIO, 6. Its special. Year Manufactured: c.1928/1929 Dimensions: 18 W x 12 H x 8 D Features: Comes with original speaker Vintage 1934 Philco 84 Cathedral Tube Radio Baby Grand Wooden Antique, Vintage 1934 Philco 84 Cathedral Tube Radio Baby Grand Wooden Antique, 7. The RF filter also serves to limit the bandwidth applied to the RF amplifier, preventing it from being overloaded by strong out-of-band signals. It was made by Toshiba and is a Marconi Model 2002. Vintage apollo gramophone record player wooden cabinet horn apollophonic b head. The seller has upgraded the radio so that a music device can be plugged in. Marconi's initial radio system had relatively poor tuning limiting its range and adding to interference. [92], The crystal radio was unamplified and ran off the power of the radio waves received from the radio station, so it had to be listened to with earphones; it could not drive a loudspeaker. However FM radio is less susceptible to interference from radio noise (RFI, sferics, static) and has higher fidelity; better frequency response and less audio distortion, than AM. Your email address will not be published. A boon to those customers who are looking for minimalistic designs of gramophones. Since there were no amplifying devices at this time, the sensitivity of the receiver mostly depended on the detector. Broadcasters can transmit a channel at a range of different bit rates, so different channels can have different audio quality. A collection of various Victorian Harvestware and lustre jugs; a relief moulded jug; a blue and white coffee pot; a character jug; decorative plat A pair of cloisonn baluster vases with dragon decoration and a pair of similarly decorated cloisonn bowls on carved hardwood stands, An Ethnic tomahawk; a Kukri knife and a Marlin bill, A pair of Noritake floral decorated baluster vases, A Susie Copper bone china "Glenmist" tea set, A Royal Doulton "Tumbling Leaves" pattern part tea and dinner service, A pair of classical bronze and marble urns on plinths, A Japanese blue and white scallop bordered bowl, An Art Deco style cut glass table lamp of cube graduated form, A collection of various porcelain figures including Goebel and Dresden style examples, Two boxes of miscellaneous ephemera, mostly military related, A quantity of miscellaneous jazz and classical CD's, A box containing two bisque headed dolls and a Breton figure. Dimensions: 14.5 W x 7.5 H x 6.5 D When applied to an earphone this would reproduce the transmitted sound. After vacuum-tube receivers appeared around 1920, the crystal set became a simple cheap alternative radio used by youth and the poor. 5 out of 5 stars with 23 ratings. oooh, that could make a great video, showing as well what you try first and decide against! This is a large floor model antique radio with a wooden case. 0 bids. The bamboo shelf looks great and I think the styling is perfect. Your studio shelves are also styled very nicely so they are interesting to look at. Price: $209.95. Item - Gramophone record Player. Features: Has been restored and in good working condition Selectivity became more important as spark transmitters were replaced by continuous wave transmitters which transmitted on a narrow band of frequencies, and broadcasting led to a proliferation of closely spaced radio stations crowding the radio spectrum. Antique Victor VV-V1 Oak Phonograph Record Player. Corporation AD2 (Amplifier-Detector) exposed tube radio. Year Manufactured: 1950 The seller says that the radio console is in very good condition, but it is untested. WebShoe Horn (1) Silver Bracelet (1) Silver Brooch (1) Silver Crown (1) Silver Napkin ring (1) Sink (1) Slide Rule (1) Snuff Bottle (1) An antique copper saucepan with iron handle; a wooden handled bell; and various Eastern and other metal ware etc. The Regency TR-1, made by the Regency Division of I.D.E.A. Different transmitters could then be "tuned" to transmit on different frequencies so they didn't interfere. While listening to the radio is falling out of fashion, there is still a large community of antique radio collectors. [32][70] Use of tuning in free space "Hertzian waves" (radio) was explained and demonstrated in Oliver Lodge's 1894 lectures on Hertz's work. It looks right at home where you have it . I bought a bamboo planter this summer. The case also has a lot of marks and scratches. So in many countries serious music is only broadcast by FM stations, and AM stations specialize in radio news, talk radio, and sports. [125] In the superregenerative receiver, the loop gain was made equal to one, so the amplifying device actually began to oscillate, but the oscillations were interrupted periodically. The radio requires electric power, provided either by It has travelled with me through many moves, initially from a Virginia colonial to a MD beach cottage. This vintage Motorola Volumatic radio dates to 1956 and is in good working condition. Dimensions: 13.75 W x 6.5 H x 6 D This RCA Radiola 17, 1920s Antique Tube Radio is available from eBay. The most familiar type of radio receiver for most people is a broadcast radio receiver, which reproduces sound transmitted by radio broadcasting stations, historically the first mass-market radio application. Price: $79.99. * I also anchored it to the wall, she has a tendency to lean forward.. Get the best deal for Antique Victor Record Player from the largest online selection at eBay.ca. The seller says that the radio is untested and the cabinet only has some minor damage due to age. Free postage. $198.00. The radio has been restored and it picks up AM and FM stations. Year Manufactured: c.1950/1960s Older models are the most expensive at a few hundred dollars. The heterodyne oscillator had to be retuned each time the receiver was tuned to a new station, but in modern superheterodyne receivers the BFO signal beats with the fixed intermediate frequency, so the beat frequency oscillator can be a fixed frequency. Features: Restored to excellent working condition Trafiguras shareholders and top traders to split $1.7bn in payouts ; Council reviewed 202mn loan to THG but lent to ecommerce groups founder instead It still looks beautiful and picks up AM/FM stations. In addition to very low gain of about 5 and a short lifetime of about 30 100 hours, the primitive Audion had erratic characteristics because it was incompletely evacuated. The bandpass filter consists of one or more resonant circuits (tuned circuits). In addition to the antenna, the coherer was connected in a DC circuit with a battery and relay. antique old Victor Victrola horn cast metal record player part standing cabinet. 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Just cool. Dimensions: 31.5 W x 6 H x 10 D Its okay, though. Otherwise, it is in great shape. This Antique | Vintage Radio | Tesla Symphonic 604A | 1950s | 100% restored year 1950 is available on Etsy. The rich woodwork on premium teak hexagonal wood base, a sublime brass horn with intense carvings makes this record player blend in with any vintage aesthetic and therefore, is a great choice for a dcor. After the radio signal is filtered and amplified, the receiver must extract the information-bearing modulation signal from the modulated radio frequency carrier wave. [108][120][121] The receiver had a control to adjust the feedback. Dimensions: 12 W x 7 H x 7 D by Marian Parsons | Nov 17, 2022 | Antiques, Favorite Finds, Home Studio, My House | 35 comments. This Vintage 1970s Portable Sanyo FM/AM Radio Cassette Tape Recorder M2405R w/ Box is available on eBay. Despite not being in working condition and some parts not being attached properly, the seller is asking for $3,000 for this antique radio. Price: $29.99 (bid price) + $29.99 shipping. dj. FOX FILES combines in-depth news reporting from a variety of Fox News on-air talent. Sound will work with a good pair of headphones or a vintage cone or horn speaker. What a great find. Although this vintage radio dates to 1958, it has an Art Deco design and features a beautiful bright red case. Save my name, email, and website in this browser for the next time I comment. Dimensions: 17.1 W x 22.3 H x 12.1 D Hello, and welcome to Protocol Entertainment, your guide to the business of the gaming and media industries. Millions of unique items are added to The Saleroom each year from 700 expert auction houses worldwide. It was manufactured by RCA Victor. IF For this reason most TRF sets had no more than three tuned RF stages. Edwin Armstrong is one of the most important figures in radio receiver history, and during this period invented technology which continues to dominate radio communication. DAB radio stations work differently from AM or FM stations: a single DAB station transmits a wide 1,500kHz bandwidth signal that carries from 9 to 12 channels from which the listener can choose. The knobs are original and this radio still has its original back piece. "Tuning" means adjusting the frequency of the receiver to the frequency of the desired radio transmission. A full-featured radio control program allows for scanning and a host of other functions and, in particular, integration of databases in real-time, like a "TV-Guide" type capability. 1956 Zenith Z512G Vintage Dual Speaker Tube Radio Grey Working, 1956 Zenith Z512G Vintage Dual Speaker Tube Radio Grey Working, 4. The incoming radio carrier signal and local oscillation signal mixed in the tube and produced an audible heterodyne (beat) tone at the difference between the frequencies. The modulation signal output by the demodulator is usually amplified to increase its strength, then the information is converted back to a human-usable form by some type of transducer. [9][21] Insufficient signal amplitude will cause an increase of noise in the demodulator, while excessive signal amplitude will cause amplifier stages to overload (saturate), causing distortion (clipping) of the signal. It was the first in Panasonics ground-breaking Mr Thin series. The first crude device that did this was the tikker, invented in 1908 by Valdemar Poulsen. Year Manufactured: 1956 This radio began its life as an antique from the 1950s/1960s. Years ago I sold two vintage bamboo plant stands. This VINTAGE 1960s JAPAN NATIONAL PANASONIC TRANSISTOR RADIO MODEL R-121 is available on eBay. [28][78] When the operator encountered an interfering signal at a nearby frequency, the secondary could be slid further out of the primary, reducing the coupling, which narrowed the bandwidth, rejecting the interfering signal. However, it is missing a number of tubes and the wires in the back that connect to a speaker are heavily damaged. [89] By the late 1920s the crystal receiver was superseded by vacuum tube receivers and became commercially obsolete. [21] This is applied as a control signal to an earlier amplifier stage, to control its gain. [9][21][20] This is called automatic gain control (AGC). ), 4 Demi Lovatos Siblings Ranked Oldest To Youngest, 3 Peyton Mannings Siblings Ranked Oldest To Youngest, 3 Devin Bookers Siblings Ranked Oldest To Youngest, 7 Mia Farrows Siblings Ranked Oldest to Youngest. It was manufactured by the Tesla company of Bratislava. $91.00 shipping.Ending Today at 8:21PM PDT 53m 52s. The receiver is easy to tune; to receive a different frequency it is only necessary to change the local oscillator frequency. [73] At the time Lodge was demonstrating the physics and optical qualities of radio waves instead of attempting to build a communication system but he would go on to develop methods (patented in 1897) of tuning radio (what he called "syntony"), including using variable inductance to tune antennas.[74][75][76]. When more than one spark transmitter was radiating in a given area, their frequencies overlapped, so their signals interfered with each other, resulting in garbled reception. [120] This was done by an adjustable air core transformer called a variometer (variocoupler). The radio also comes with an original Silvertone speaker. medianet_width = "300"; Features: Features record player; in rough condition This Vintage Mid-Century 1950s Zenith AM/FM Tube Radio is available on Etsy. ANGELS HORN Vinyl Record Player, Bluetooth Turntable with Built in Speakers Phono Preamp, High Fidelity Turntables for Vinyl Records with Magnetic Cartridge AT-3600L, Belt Drive 2-Speed in stock 3 new from $209.99 Free shipping Check Price On Amazon Amazon.com