$180.5 Buy It Now or Best Offer
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Seller Store yuwi_69
(632) 99.2%,
Location: shen zhen
Ships to: US,
Item: 134894690728
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
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Vacuum Tube FM Radio Vintage Audio Valve Stereo Receiver DIY/ 6N3/6N1/6K4/6J4 Description If you buy a kit, you’ll have to solder it yourself.I. Circuit structure, design principle This machine belongs to the typical super-external difference radio, using a circuit board design form, including high-frequency reception, mid-frequency amplification, limiting, frequency discrimination, stereo decoding, preamplification and other circuits, the output is a stereo signal, which can be connected to a variety of types of tube power amplifiers, active speakers, stereo equalization amplifiers and other equipment. Specific circuit configuration is as follows: high-frequency reception using dual triode 6N3 to do high-frequency amplification and mixer amplification, dual triode 6N1 to do the local oscillation. Mid-frequency amplification using two-stage pentode 6K4, two-stage limiter, using pentode 6J4, phase frequency identification, stereo decoding using TA7343 (the latest version has been changed to LA3401), the decoded audio signals are switched to double triode 6N2 after conversion switch for 5 times the preamplification, the output of audio signals. Second, the machine highlightsThis machine has a light weight, high reception sensitivity, the use of electronic tubes to receive FM signals, with a strong sense of nostalgia, the sound sweet, mellow, the use of potentiometers and varactor diode tuning, to solve the need to use the air capacitor to do the trouble of pulling the line system, while the use of digital tubes to display the receiving frequency, the use of 6E2 to display the strength of the received signal to increase the visibility, the ornamental nature. The use of mesh cover design, you can avoid the children at home accidentally touch the scalding. The panel is oxidized by CNC machining, and the shell is made of stainless steel bending and welding. Reduce the cost. The knob is also CNC processed and polished, high-end atmosphere, the whole machine circuit board is made of 2mm thick PCB, increasing the mechanical strength, not easy to damage. Third, the machine parameters:Receiving band range: FM87-108MHz Power supply voltage: 110V/220V Number of channels: 2, stereo Machine power consumption: about 100W Net weight: about 2~4Kg Receiving form: super-aberrant type Four, the machine important componentsPower transformer, electronic tube, high-voltage filter capacitors, tuning resonance inductor, varactor diode, etc.. package : 1pcx Vacuum Tube FM Radio Vintage Audio Valve Stereo Receiver DIY/ 6N3/6N1/6K4/6J4 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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