$427.5 Buy It Now or Best Offer
free,30-Day Returns
Seller Store lifangduo1006_0
(1388) 98.7%,
Location: shen zhen
Ships to: US,
Item: 126296146641
Restocking Fee:No
Return shipping will be paid by:Seller
All returns accepted:Returns Accepted
Item must be returned within:30 Days
Refund will be given as:Money Back
Unbranded:Unbranded
MPN:Does Not Apply
UPC:Does not apply
EAN:Does not apply
Vacuum tube-FM-radio retro sound valve stereo radio kit+housing 6N1/6K4/6J4/Tube Description Features: Notice:1. This product is a kit, you need test equipment and technology to install it, we can only provide drawings.2. The product is very heavy and we do not recommend returning it. If it is damaged, we will reissue the accessories. 1. Connect the antenna, and connect the antenna connector delivered with the machine to the lead of the external antenna. The machine delivers the SL16 connector. If you are in the urban area and the signal is good, you can connect a 2-meter antenna to the antenna connector. Left and right wires, stick out the window to receive FM radio. Of course, if you want to receive more radio signals, you must use an external omnidirectional outdoor antenna. The wiring method of SL16 connector can refer to the connection method of CCTV signal. 2. Plug in the power cord that matches the work of the machine, the machine uses 220V voltage,3. Use the RCA audio cable to connect the audio output terminal of this unit with the audio input terminal of your home amplifier.4. The audio selection switch is rotated to the left to select the radio signal output. If it is selected to be rotated to the right, it is an external audio source signal, such as CD and other audio output signals. At this time, audio signals such as CD should be connected to the audio input end of the machine, and output after being switched by the switch.5. Turn on the power switch, the indicator light is on, wait for about 20 seconds to listen to the radio station. Rotate the tuning knob to select different radio signals. At the same time, the frequency meter will display the currently listening radio frequency. The green indicator bar of the tuning indicator tube will be tightly closed when the signal is the best.6. After listening, turn off the power switch. 1. Circuit structure and design principle This machine is a typical super-heterodyne radio. It adopts the design form of a whole circuit board design, including high-frequency reception, intermediate frequency amplification, amplitude limiting, frequency discrimination, stereo decoding, pre-amplification and other circuits. The output is a stereo signal. , can be connected to various types of tube power amplifiers, active speakers, stereo balanced amplifiers and other equipment. The specific circuit configuration is as follows: the high-frequency reception adopts the double triode 6N3 for high frequency amplification and mixer amplification, and the double triode 6N1 for the local oscillation. The intermediate frequency amplifier adopts two-stage pentode 6K4, two-stage limiter, adopts pentode 6J4, phase discriminator, stereo decoding adopts TA7343 (the latest version has been changed to LA3401), and the decoded audio signal is switched by a switch and sent to The double triode 6N2 is pre-amplified by 5 times and outputs the audio signal. Second, the machine highlightsThis machine has the advantages of light weight, high receiving sensitivity, using electronic tubes to receive FM signals, with a strong sense of nostalgia, sweet and mellow sound, using potentiometers and varactor diodes for tuning, which solves the need for air capacitors. The digital tube displays the receiving frequency, and adopts 6E2 to display the received signal strength, which increases the visibility and appreciation. The mesh cover design can avoid accidental burns by children at home. The panel is oxidized by CNC machining, and the shell is made of stainless steel by bending and welding. Reduced costs. The knob is also CNC machined and polished, which looks high-end and elegant. The circuit board of the whole machine is made of 2mm thick PCB, which increases the mechanical strength and is not easy to damage. 3. Machine parameters:Shell material: aluminum alloy + stainless steel. Receiving frequency range: FM87-108MHzPower supply voltage: 198V-242V Number of channels: 2, stereoPower consumption of the whole machine: about 100W Machine size: 374X200X140 mmNet weight: about 5Kg Receiving form: superheterodyne Fourth, the important components of the machinePower transformers, tubes, high-voltage filter capacitors, tuning resonant inductors, varactor diodes, etc. package ： 1pcx Vacuum tube-FM-radio retro sound valve stereo radio kit+housing 6N1/6K4/6J4/Tube If you have any questions, please contact us in time, we will help you deal with the problem for the first time. Shipping Item will be shipped within 24 -48 hours after full payment is received. Normally the shippment to worldwide is used to take 15 to 30 business days, exclude Sat & Sun. Payment Payment must be received in 7 business days of auction closing. Please leave note for your special request (e.g. Colors or Size) in ebay note when you pay the order. Any special request cannot be accepted after 24 hours of payment,because most of orders will be processed instantly and same day dispatched. Contact Us If you have any questions, please feel free to email our servicer ，and we will reply you ASAP. If no response within 24 Hours, please check the spam of mail box or kindly re-send it to us. We greatly appreciate your POSITIVE feedback. Please do NOT leave negative or neutral feedback without any contact. If you haven’t received item in 45 days, please contact us and we will arrange refund or resend Feedback We care about our valued buyers, if you have any questions, our Customer Service staffs will be very glad to help you. We try our best to reply your email as soon as possible, please kindly allow 24 hours(working day) for us to response. Thank you. We greatly appreciate your POSITIVE feedback. Please do NOT leave negative or neutral feedback without any contact.
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