DSP radio version 3

Name: DSP radio version 3
SKU: 7988
Price: 35.00 USD
Availability: Discontinued
Rating: 4.60 (5 reviews)

(5 Reviews)

LW-AM-FM wideband receiver in 21st century comes back with several modification

Designed by microwavemont in Japan

Product Retired

This product is no longer available for sale.

The seller may be offering an improved version or it may be hanging out on the beach, enjoying the retired life.

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On Dec. 15, 2025, my tindie store "micowavemont" trying restarting! Stay tuned!

LW-AM-FM wideband receiver in 21st century comes back with several modification

This item is transferred to new item ,DSP radio version 4 I have a plan to release new version with built-in USB-UART for easy firmware uploading. If you prefer new version, please wait for a while. …

What is it?

My best-seller item "DSP radio" comes back with several modification including (1) digital volume control and (2) additional 3.3 V regulator circuit.

Why did you make it?

My previous one surely works well but my great customer gave me good suggestions. The details can be found in my hackaday.com project log...

What makes it special?

Digital volume control is ease to use and more smarter than before (because ohmic control will waste some power for volume control. battery-driven circuit like this should avoid any waste of energy for longer operation time). In addition, some capacitors are added for more better signal reception and lower power consumption.

In addition, I've received some comment for difficulty of small SMT chip soldering especially LED so..

I've populated two tact switches, LED, in addition to firmware-written Mega328, KT0915, TP4057 (Lipo charger) and 3.3 V regulator. The semi-kit will be available in the following form....

One additional tips for excellent shortwave band reception. https://www.amazon.com/Sony-Portable-Active-World-Antenna/dp/B00009VT84/ref=sr_1_1?ie=UTF8&qid=1481722955&sr=8-1&keywords=AN-LP1 This type of shortwave active antenna is indeed ideal for short-ware reception. Indeed I have this one but the performance is quite well. With this antenna I in Japan can clearly listen direct wave from UK. For usage of this antenna, you will need 3.5 mm jack plug wiring. (antenna terminal of AN-LP1 is 3.5mm jack)

Review Breakdown

Average Ratings

Product: (4.40)

Documentation: (4.60)

Shipping: (4.80)

Communication: (4.60)

Cmn | Aug. 6, 2018

Dsp radio

Very nice radio, I use it for sw reception, and also for reception of the long wave. Here in europe we still have long wave radio emitters (french german and of course BBC ). It is difficult to find a good long wave receiver.
I am very surprised with the quality and the rapid sending.
Thanks very much
C Veltman

Response from microwavemont | March 14, 2019

Thank you for reviewing! I am very happy to hear you are enjoying Radio!!

Normand | Aug. 3, 2018

dsp

Hello

very good device, great sensibility , nice screen, all ok,very happy !!!!!!!

very quick invoice

thanks

Response from microwavemont | March 14, 2019

Thank you for review. I hope you are enjoying "Radio life". Thank you!

Emmanuel | Aug. 24, 2017

Neat kit

I bought this with nostalgia in mind, soldering a FM radio kit was my first electronic project many years ago, only it wasn't SMT.
I was delighted to discover an origami in the package, not only because I'm a fan of Japanese culture and Arts, but also because thinking objects have geographical origins is another way to travel the world without moving, and this one is a good reminder :-)

I still have to get a reflow station (thinking about this one https://www.tindie.com/products/LafrasH/modern-electronics-reflowr/ ) to get it assembled though.

Response from microwavemont | Sept. 6, 2017

Thank you for wonderful review including origami!! (actually it is my wife's made!) Just for small amount SMT soldering, indeed, we can do it by a fine soldering iron and magnifier (in my case, due to aging eyes..). For example, in the case of 0603 resistor( and capacitor), putting small amount of solder in one PCB land and re-melting it to fix resistor and the other can be soldered by soldering iron. You may need soldering wick to remove too much solder. Anyway thank you for reviewing and please enjoy Radio!!

Shailendra | Dec. 10, 2016

DSP AM-FM-SW radio

Product is well built, but the rotary encoder used is a let down as the frequency gets reset if not rotated properly. There is a play in the shaft of the encoder which makes it shift sideways when rotated leading to unintentional resetting of frequency. It is very frustrating to retune the band to the desired frequency. This is true even if used with the tuning knob which is part of the supplied accessory.
I am also unable to tune into any MW and SW stations (used a 20ft long wire as antenna hanging outside the window). This may be because I am using supply from the phone charger which is generating a lot of noise as I do not have a male pin for the battery input (would have been nice if it had been included in the package).

Response from microwavemont | Dec. 10, 2016

Thank you for review!
Cell phone charger with USB terminal and mobile battery with USB terminal usage is out of my design supposition. LiPo (3.7V single cell ) battery is one of a member in order to work this radio correctly. Please get appropriate battery for operation. The shape of Lipo can be found, for example https://www.adafruit.com/products/1904 the silver one is Lipo. Thank you.

Kamaldeep | Nov. 3, 2016

Radio with the smallest LCD ever

The most attractive thing on this radio is the LCD. I listen to FM most of the time and reception is very clear and volume controls are great. Its very unique approach with the microcontroller. Whole code is available on the website. Japan is well known for making things smaller and he kept that tradition. Will buy more.
Thanks

Response from microwavemont | Nov. 3, 2016

Thank you for nice product review. I am very happy to see your satisfaction for DSP radio. For shortwave reception, we need some antenna (just several metres wire is enough) but you may also enjoy exotic radio station on Caribbean seas. Thank you again!!