---
product_id: 511581491
title: "Si4732 ATS-25MAX Upgrade Version 5.2B Full Band Radio Receiver, FM LW MW & SW SSB DSP Receiver 2.4 Touch Screen Built in 4000mAh Battery"
brand: "sdrgeek"
price: "€ 325.99"
currency: EUR
in_stock: true
reviews_count: 9
category: "Sdrgeek"
url: https://www.desertcart.fi/products/511581491-si4732-ats-25max-upgrade-version-5-2b-full-band-radio
store_origin: FI
region: Finland
---

# Full band FM/LW/MW/SW/SSB reception 2.4-inch vibrant color touch screen 4000mAh long-lasting battery Si4732 ATS-25MAX Upgrade Version 5.2B Full Band Radio Receiver, FM LW MW & SW SSB DSP Receiver 2.4 Touch Screen Built in 4000mAh Battery

**Brand:** sdrgeek
**Price:** € 325.99
**Availability:** ✅ In Stock

## Summary

> 📻 Elevate your radio game—never miss a frequency, never miss a moment!

## Quick Answers

- **What is this?** Si4732 ATS-25MAX Upgrade Version 5.2B Full Band Radio Receiver, FM LW MW & SW SSB DSP Receiver 2.4 Touch Screen Built in 4000mAh Battery by sdrgeek
- **How much does it cost?** € 325.99 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/511581491-si4732-ats-25max-upgrade-version-5-2b-full-band-radio)

## Best For

- sdrgeek enthusiasts

## Why This Product

- Trusted sdrgeek brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **All-Band Mastery:** Seamlessly tune into FM, LW, MW, SW, and SSB bands with precision and clarity.
- • **Unmatched Battery Life:** Stay powered for hours with a robust 4000mAh battery—no more mid-adventure shutdowns.
- • **Advanced DSP & Scanning:** Experience upgraded 5.2b Max DSP with enhanced scanning, backlight adjustment, and direct frequency input.
- • **Intuitive Touch Control:** Navigate menus and frequencies effortlessly on a crisp 2.4-inch color touchscreen.
- • **Rugged & Portable Design:** Crafted with aluminum alloy for durability and compactness—perfect for travel, camping, and urban exploration.

## Overview

The Si4732 ATS-25MAX Upgrade Version 5.2B is a cutting-edge full band radio receiver featuring FM, LW, MW, SW, and SSB capabilities. Equipped with a powerful 4000mAh battery and a sharp 2.4-inch color touchscreen, it offers advanced DSP technology for superior scanning and reception. Its durable aluminum alloy body and compact size make it ideal for professionals and enthusiasts on the go, delivering reliable performance for travel, camping, and hobbyist use.

## Description

Frequency range:Band band[] = {{ "FM", FM_BAND_TYPE, FM, 6400, 10800, 9920, 10, 0, 0}, // FM 0{ "LW", LW_BAND_TYPE, AM, 100, 514, 198, 9, 0, 0}, // LW 1{ "MW", MW_BAND_TYPE, AM, 514, 1800, 1395, 9, 0, 0}, // MW 2{"BACON", LW_BAND_TYPE, AM, 280, 470, 284, 1, 0, 0}, // Ham 800M 3{ "630M", SW_BAND_TYPE, LSB, 470, 480, 475, 1, 0, 0}, // Ham 630M 4{ "160M", SW_BAND_TYPE, LSB, 1800, 2000, 1850, 1, 0, 0}, // Ham 160M 5{ "120M", SW_BAND_TYPE, AM, 2000, 3200, 2400, 5, 0, 0}, // 120M 6{ "90M", SW_BAND_TYPE, AM, 3200, 3500, 3300, 5, 0, 0}, // 90M 7{ "80M", SW_BAND_TYPE, LSB, 3500, 3900, 3630, 1, 0, 0}, // Ham 80M 8{ "75M", SW_BAND_TYPE, AM, 3900, 5300, 3950, 5, 0, 0}, // 75M 9{ "60M", SW_BAND_TYPE, USB, 5300, 5900, 5375, 1, 0, 0}, // Ham 60M 10{ "49M", SW_BAND_TYPE, AM, 5900, 7000, 6000, 5, 0, 0}, // 49M 11{ "40M", SW_BAND_TYPE, LSB, 7000, 7500, 7074, 1, 0, 0}, // Ham 40M 12{ "41M", SW_BAND_TYPE, AM, 7200, 9000, 7210, 5, 0, 0}, // 41M 13{ "31M", SW_BAND_TYPE, AM, 9000, 10000, 9600, 5, 0, 0}, // 31M 14{ "30M", SW_BAND_TYPE, USB, 10000, 10200, 10099, 1, 0, 0}, // Ham 30M 15{ "25M", SW_BAND_TYPE, AM, 10200, 13500, 11700, 5, 0, 0}, // 25M 16{ "22M", SW_BAND_TYPE, AM, 13500, 14000, 13700, 5, 0, 0}, // 22M 17{ "20M", SW_BAND_TYPE, USB, 14000, 14500, 14074, 1, 0, 0}, // Ham 20M 18{ "19M", SW_BAND_TYPE, AM, 14500, 17500, 15700, 5, 0, 0}, // 19M 19{ "17M", SW_BAND_TYPE, AM, 17500, 18000, 17600, 5, 0, 0}, // 17M 20{ "16M", SW_BAND_TYPE, USB, 18000, 18500, 18100, 1, 0, 0}, // Ham 16M 21{ "15M", SW_BAND_TYPE, AM, 18500, 21000, 18950, 5, 0, 0}, // 15M 22{ "14M", SW_BAND_TYPE, USB, 21000, 21500, 21074, 1, 0, 0}, // Ham 14M 23{ "13M", SW_BAND_TYPE, AM, 21500, 24000, 21500, 5, 0, 0}, // 13M 24

Review: Very good receiver, lots of fun. - I already owned the ATS25X1 and this ATS25 Max is even better. The data encoder feels great and this one takes two clicks before the frequency changes 1 khz so if you bump it you're still on frequency. It has a green charging indicator LED instead of red which turns off when fully charged. I use it mainly for SSB reception on the ham bands and a little shortwave. You will definitely want an external antenna. I also recommend getting a BNC connector with binding post. This makes it easy to experiment with various antenna and ground connections. The top and bottom halves of the case are aluminum but the front and back panels are a fiberglass like circuit board material. If you really want to reduce noise and hear weaker stations, I highly recommend to connect of a top and bottom case screw to the base of the BNC connector as I show in the attached photo. I used a couple of small thin ring terminals to go under the screws and then snipped a few strands out of the other end to make it smaller, twisted and put under the nut and ring where the BNC connector comes out of the backup the radio. I stripped a 50-ft cat5 cable which gave me four twisted pairs of small, flexible, easy to work with wire. I took one of the pair and stripped about 1 inch of the wire each end then twisted each end together and it works great. Sometimes I just lay it out on top of some Holly bushes and other times I tie a nut to one end for some weight and throw it over a tree limb letting the weight fall to within a couple of feet of the ground and stretching the other end over to a wooden picnic table. This gives me an inverted v-shape and also works well. At home I ran one of the twisted pairs near my ceiling from the den to the bedroom. Now. I can clip on to either end and get good reception indoors. I ordered the Max and that's what it says on the front panel but it has Max decoder on the rear panel and also the Wi-Fi antenna jack. I've read online that the circuit board is the max decoder and you can update the firmware and take advantage of this, but I probably won't bother. This radio is a experimenter's dream and very fun to tinker with. It seems a little better quality and I will buy from SDRGEEK again.
Review: nice little radio. - Fun little radio. I hooked it to a 125 ft wire antenna and monitored many SW and Ham transmissions.

## Features

- 【New version 5.2b Max】DSP SDR Receiver is upgraded New 5.2b Max,the scanning function, backlight adjustment and shutdown were mainly added, and there were more menus,with more powerful functions, and can better meet the needs of users.
- 【Large capacity battery】Full band radio receiver is equipped with a 4000mAh battery,The product is compact and easy to carry. It can be used when traveling, climbing, camping, or sharing with family and friends.It can be used for a long time without worrying about sudden power failure.
- 【FM AM Mode】To receive FM AM mode, ATS-25 needs its own dedicated active antenna for shortwave, with a range of 0-30MHz.
- 【Radio Search Function】 This has a radio search function, supports broadcast search and direct frequency input on the numeric keyboard, and also has a HAM band shortcut channel; AM bandwidth: 1-6K; SSB bandwidth: 0.5-4.0K.
- 【2.4-inch Color Touch Screen】 This Si4732 radio receiver with 2.4'' color touch screen allows you to read data more clearly.The shortwave radio shell is made of aluminum alloy, which is strong and wear-resistant and have a better user experience.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BFBMS9WR |
| Batteries | 1 Lithium Ion batteries required. (included) |
| Best Sellers Rank | #220,827 in Electronics ( See Top 100 in Electronics ) #368 in Portable Shortwave Radios |
| Customer Reviews | 4.1 4.1 out of 5 stars (86) |
| Date First Available | September 14, 2022 |
| Item Weight | 13.1 ounces |
| Item model number | ATS-25 MAX |
| Manufacturer | SDRGEEK |
| Product Dimensions | 5 x 4 x 2 inches |

## Product Details

- **Brand:** SDRGEEK
- **Color:** Black New
- **Connectivity Technology:** USB
- **Included Components:** Owner's Manual
- **Power Source:** Battery Powered
- **Product Dimensions:** 7"L x 7"W x 2.5"H
- **Radio Bands Supported:** FM
- **Recommended Uses For Product:** Music, News
- **Special Feature:** Portable
- **Tuner Technology:** SSB

## Images

![Si4732 ATS-25MAX Upgrade Version 5.2B Full Band Radio Receiver, FM LW MW & SW SSB DSP Receiver 2.4 Touch Screen Built in 4000mAh Battery - Image 1](https://m.media-amazon.com/images/I/61P8EZ59sKL.jpg)
![Si4732 ATS-25MAX Upgrade Version 5.2B Full Band Radio Receiver, FM LW MW & SW SSB DSP Receiver 2.4 Touch Screen Built in 4000mAh Battery - Image 2](https://m.media-amazon.com/images/I/61ULmS6Q+QL.jpg)
![Si4732 ATS-25MAX Upgrade Version 5.2B Full Band Radio Receiver, FM LW MW & SW SSB DSP Receiver 2.4 Touch Screen Built in 4000mAh Battery - Image 3](https://m.media-amazon.com/images/I/61YGs0OYkEL.jpg)
![Si4732 ATS-25MAX Upgrade Version 5.2B Full Band Radio Receiver, FM LW MW & SW SSB DSP Receiver 2.4 Touch Screen Built in 4000mAh Battery - Image 4](https://m.media-amazon.com/images/I/710DbPSAEVL.jpg)
![Si4732 ATS-25MAX Upgrade Version 5.2B Full Band Radio Receiver, FM LW MW & SW SSB DSP Receiver 2.4 Touch Screen Built in 4000mAh Battery - Image 5](https://m.media-amazon.com/images/I/71UPaq0+dfL.jpg)

## Questions & Answers

**Q: Does this radio receive DRM**
A: No

**Q: is there a manual for, v52a radio decoder is there a manual for this product**
A: You can go on YouTube they will show you how to use the radio. I've been a ham radio operator for 30 years if you put a good antenna on this radio it is excellent.

**Q: What bnc connector do i need for this to use my own antenna? the ones i have are too big. thanks.**
A: gee that's too bad. The standard BNC fitting  is the one I use 
, They are sold here on amazon and are pretty cheep. Nice little receiver But it needs a good antenna Just a thin length of hookup wire "the longer the better

**Q: Can it use standard batteries like D cell, C cell?**
A: It has a built in rechargeable li-ion battery. Good for at least 10 hours of use before recharging.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Very good receiver, lots of fun.
*by K***K on May 15, 2025*

I already owned the ATS25X1 and this ATS25 Max is even better. The data encoder feels great and this one takes two clicks before the frequency changes 1 khz so if you bump it you're still on frequency. It has a green charging indicator LED instead of red which turns off when fully charged. I use it mainly for SSB reception on the ham bands and a little shortwave. You will definitely want an external antenna. I also recommend getting a BNC connector with binding post. This makes it easy to experiment with various antenna and ground connections. The top and bottom halves of the case are aluminum but the front and back panels are a fiberglass like circuit board material. If you really want to reduce noise and hear weaker stations, I highly recommend to connect of a top and bottom case screw to the base of the BNC connector as I show in the attached photo. I used a couple of small thin ring terminals to go under the screws and then snipped a few strands out of the other end to make it smaller, twisted and put under the nut and ring where the BNC connector comes out of the backup the radio. I stripped a 50-ft cat5 cable which gave me four twisted pairs of small, flexible, easy to work with wire. I took one of the pair and stripped about 1 inch of the wire each end then twisted each end together and it works great. Sometimes I just lay it out on top of some Holly bushes and other times I tie a nut to one end for some weight and throw it over a tree limb letting the weight fall to within a couple of feet of the ground and stretching the other end over to a wooden picnic table. This gives me an inverted v-shape and also works well. At home I ran one of the twisted pairs near my ceiling from the den to the bedroom. Now. I can clip on to either end and get good reception indoors. I ordered the Max and that's what it says on the front panel but it has Max decoder on the rear panel and also the Wi-Fi antenna jack. I've read online that the circuit board is the max decoder and you can update the firmware and take advantage of this, but I probably won't bother. This radio is a experimenter's dream and very fun to tinker with. It seems a little better quality and I will buy from SDRGEEK again.

### ⭐⭐⭐⭐ nice little radio.
*by A***A on July 26, 2024*

Fun little radio. I hooked it to a 125 ft wire antenna and monitored many SW and Ham transmissions.

### ⭐⭐⭐⭐⭐ Great bang for the buck. Fun and useful.
*by C***. on December 15, 2023*

I bought this after seeing how a friend's didn't fold up in the presence of a broadcast transmitter (antenna disconnected.) The book was useless for me as the print was too small, but after playing with the menus a little I found my way around easily. When not using it at work, I just have fun with it. Sensitivity OK, but it's a champ with an external antenna. The audio is what you'd expect from a small metal box, but actually it does have great clarity. Better with headphones. I really love the interface. It's just fun to tune around with and it does feel pretty well built. The knob is solid and smooth unlike some more pricey portables. It won't replace my far more expensive portable for longer term listening, but I'm really please with it as it is. Sometimes it's a little glitchy and needs a reboot, but for the price I can more than live with that. Some may be having trouble because, unlike most receivers, there is an antenna switch in the back that switches between FM rx and MW/SW rx. It's right near the BNC jack.

## Frequently Bought Together

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-02-10*