Assembled SI4732 All Band Radio Receiver FM AM (MW & SW) SSB (LSB & USB) with lithium battery + Antenna + Speaker + Case
182.87 85.41 $
Operating voltage: 5V-12V (voltage below 5V sound will be significantly reduced, the limit voltage can not exceed 15V);
Operating current: 1mA (static) ~ 150mA (max);
Output speaker impedance: 4 Ω-32 Ω(impedance high-sound, high efficiency);
Support the speaker power: 0.5W-25W (In fact, any power speaker can be used, the volume and the speaker power is not much relationship, as long as greater than the power amplifier output rating on the line);
Output power: 750mW (max);
Input support: electret, microphone, condenser microphone, moving coil microphone, audio signal.
Volume: 22.7 (L) * 13.5 (W) * 7.4 (H) mm;
Used for microphone preamplifier effect good , noise and AC ripple is very low, the output signal voltage greater than 1V or more, to promote the power amplifier signal strength.
Amplifier board IN and GND use shielded cable access electret microphone, access to the attention of the polarity, the electret after the reverse will be very little or no sound;
Amplifier OUT board connected speakers, speakers away from the microphone, in order to avoid self-excited noise;
Power amplifier board positive and negative access 5 ~ 12V DC power supply, please do not reverse, otherwise it will burn out the module;
Amplifier board comes with a volume trimmer potentiometer, if you feel the sound is too large or too small can try to adjust.
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Packages from our warehouse in China will be shipped by ePacket or EMS depending on the weight and size of the product. Packages shipped from our US warehouse are shipped through USPS.
Yes. We provide free shipping to over 200 countries around the world. However, there are some location we are unable to ship to. If you happen to be located in one of those countries we will contact you.
We are not responsible for any custom fees once the items have shipped. By purchasing our products, you consent that one or more packages may be shipped to you and may get custom fees when they arrive to your country.
Shipping time varies by location. These are our estimates:
|Location||*Estimated Shipping Time|
|United States||10-30 Business days|
|Canada, Europe||10-30 Business days|
|Australia, New Zealand||10-30 Business days|
|Central & South America||15-30 Business days|
Yes, you will receive an email once your order ships that contains your tracking information.
For some shipping companies, it takes 2-5 business days for the tracking information to update on the system.
For logistical reasons, items in the same purchase will sometimes be sent in separate packages, even if you've specified combined shipping.
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