AM/FM AM Radio Kit Parts CF210SP Electronic Production Suite DIY Kit

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Product Details

• CF210SP is a new type of radio FM, AM two band radio, the FM band using the CD9088 chip, which uses patch element SMT package, the receive frequency range of 76-108HMZ, not only to accept the FM radio, can also receive campus radio and part of the audio signal of the television stations; AM band using direct IC the TA7642, receive frequency range is 525-1605KHZ circuit is simple, assembly success rate, a better selectivity having a little;. amplifier circuit using TD2822 special function ICs having loud. Sound quality is good.
• Circuit works
  1. Frequency Modulation (FM) section
  CD9088 is a dedicated single-chip FM radio chip,
  Its simple external circuit, the circuit was built frequently 70KHZ phase locked loop system, selectively implemented by active RC filter, mute circuit can be suppressed non-IF signal and the IF signal is too weak.
  FM signal input circuit rod antenna C8 / C10 and L1 IC1 11, 12 feet into the mixer circuit, local oscillation circuit uses a variable capacitor CA / L2, etc. vitality can be achieved manually tune.
  Circuit R2 / C2 to squelch circuit, 3 feet to the audio loop filter capacitor C4. Indirect C13 6,8 feet of the intermediate frequency feedback capacitor, 7 feet is connected to C14 was the low-pass capacitors,
  between C17 of 8/9 feet is IF coupling capacitor , 10 feet connected to the C12 is a limiting amplifier low-pass capacitors, 13 feet connected to the C6 of the limiter offset voltage capacitors.
• 2. Amplitude modulation (AM) section
  AM band using Direct IC TA7642, TA7642 IC has 10 transistors internal composition, its appearance uses encapsulation mode a TO-92,1 feet grounded, 2 feet input , 3 feet output. Audio signal output from 3 feet, through R6 / C18 is coupled to the input of the power amplifier IC TDA2822 the power amplifier, pushing the speaker working.

Package includes:

1PCS AM FM Radio Kit Parts CF210SP Suite For Ham Electronic Lover Assemble DIY

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• Returns Policy

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• All package need to wait 30 days (US only n eed 7-10 days) ,Please take care it.Less than 30 days,we can't take a refund.
• If the item is defect when you receive it or you are not satisfied with it, please return it within 14 days for a replacement or money back. But the items must be back in factory condition. Please contact us and double check the return address before you return it.
• If is item is defective in 12 months, you can return it to us. We will send you a new replacement after receiving the defective item.

• Condition: Brand New
• Brand: Unbranded
• Model: CF210SP
• Band: FM/AM

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