AURSINC MMDVM Duplex Hotspot Module Dual Hat V1.5.2 Support P25 DMR YSF NXDN DMR Slot 1 + Slot 2 for Raspberry Pi, Pi Zero with USB Port (Without OLED)
Bottom line: The AURSINC MMDVM Duplex Hotspot Module Dual Hat V1.5.2 Support P25 DMR: Duplex DMR with Slot 1 and Slot 2 via two onboard ADF7021 chips; main trade-off: 10mW RF output limits usable range to the same room or desk.
As an Amazon Associate, SpecPicks earns from qualifying purchases. Full disclosure →
Pros & Cons
Pros
- ✓ Duplex DMR with Slot 1 and Slot 2 via two onboard ADF7021 chips
- ✓ Runs DMR, P25, D-Star and System Fusion on one board
- ✓ Fits Pi 1, 2/2b, 3/3b/3b+, 4/4b, Pi Zero and Pi Zero 2W
- ✓ Ships V1.5.2 firmware, upgradable to V1.6.1 over pi-star SSH
- ✓ Kit includes 2 antennas and 2 SMA sockets, no extra parts needed
Cons
- ✗ 10mW RF output limits usable range to the same room or desk
- ✗ No OLED in this variant, so status needs a pi-star web session
- ✗ Duplex mode may need a pistar-mmdvmhshatflash reflash first
- ✗ Band coverage is broad but tuned best for 430-440 MHz only
Manufacturer description
DESCRIPTION Original cystal : Original ECS-TXO-3225-147.4-TR from USA Duplex variant of MMDVM_HS_Hat This PCB uses the MMDVM_HS . It has two ADF7021 onboard and allows for duplex operation with two time slots on DMR. Setting Tips: Modem select: STM32-DVM/MMDVM_HS-Raspberry pi Hat(GPIO) Package List: 1x MMDVM duplex HotSPOT Module 2x Antenna
SpecPicks Verdict
SpecPicks scored AURSINC MMDVM Duplex Hotspot Module Dual Hat V1.5.2 Support P25 DMR… using a rating × review-volume × price-fit model applied to published specs and reviews across the single-board computers category. AURSINC's single-board computers lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for single-board computers of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Key Features
- [WIDELY COMPATIBLE] Supports DMR, P-25, D-Star and System Fusion. HIGH PERFORMACE 32-bit ARM processor, up to 10mW RF power, fully tested every piece. Compatible with the Raspberry Pi, including the Pi 1, 2/2b, 3/3b/3b+, 4/4b, Pi Zero, Pi Zero 2W
- [FREQUENCY] Radio Frequency 144-148, 219-225, (Main Band) 420-475, 842-950. It's best to work on the amateur band 430-440 MHz. NOTE TX =0, RX=0. Modem select STM32-DVM/MMDVM_HS-Raspberry pi Hat (GPIO) or any other (GPIO board)
- [NOTE] If the board fails to work on duplex mode, please run the upgrade command sudo pistar-mmdvmhshatflash hs_dual_hat (if this command doesn't work, please try WPSD replace pi-star for MMDVM https// www. mmdvm .club/index .php/wpsd.html)
- [LASTEST FIRMWARE] The MMDVM Duplex Hotspot board is latest firmware V1.5.2, support upgrade to V1.6.1. How to upgrade (pi-star/expert/ssh access/user pi-star pass raspberry) connect JP1 first. Then run upgrade command (as shown). After upgraded finished, disconnect JP1
- [Package List] 1x MMDVM duplex HotSPOT Module; 2x Antenna; 2x SMA socket. If you encounter any issues while using the product, please contact us, we're here to help
- [After-sales Service] If you have any issues with upgrading the firmware of your product, please contact us. We provide technical support and after-sales service, and we will do our best to help resolve your issue
Full Specifications
| UPC | 753318593268 |
|---|---|
| ASIN | B089JYBXHQ |
| Brand | AURSINC |
| Model Name | AURSINC MMDVM Duplex Hotspot Module Dual Hat |
| Manufacturer | AURSINC |
| Model Number | 2020 |
| Mfr Part Number | 2020 |
| Processor Count | 1 |
| Total Usb Ports | 4 |
| Compatible Devices | Raspberry Pi 1, 2/2b, 3/3b/3b+, 4/4b, Pi Zero, Pi Zero 2W, GPIO boards |
| Warranty Description | 1 year |
| Wireless Compability | Radio Frequency |
| RAM Memory Technology | DDR3, LPDDR3 |
| Connectivity Technology | GPIO |
| Wireless Communication Standard | Radio Frequency |
Hardware benchmark data
Ready to buy?
AURSINC MMDVM Duplex Hotspot Module Dual Hat V1.5.2 Support P25 DMR YSF NXDN DMR Slot 1 + Slot 2 for Raspberry Pi, Pi Zero with USB Port (Without OLED) is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
More guides & deep dives from the SpecPicks archive
Browse all articles & guides →- How to Build a Windows 98 Retro PC in 2026
- Emulation Hardware in 2026: FPGA, Software, and Cart-Reader Ecosystems
- The Complete Voodoo5 5500 AGP Driver Guide (2026 Edition)
- RTX 4070 Super vs RX 7800 XT — Which to Buy in 2026
- Best 1440p Gaming GPUs in 2026
- Best Budget Gaming PC Build 2026 — ~$1,000 Parts List
- Best Retro Handhelds in 2026 — From $35 to $500
More reviews from the SpecPicks archive
Browse all reviews →- 8BitDo Sn30 Pro vs Pro 2: Best Bluetooth Controller for Raspberry Pi 4 Emulation
- xAI Open-Sources Grok-Build: Can You Run It Locally?
- How to run Llama 3.1 8B on NVIDIA GeForce RTX 5070
- MAYFLASH F300 vs DualSense for PC Rhythm Games (2026)
- When a Game Boy Clone Runs Too Fast: The Crystal-Swap Fix Behind a Viral Repair
- Why Stock GPU Pastes Last Longer Than Aftermarket Ones
- Best Budget Parts for a Local-LLM PC in 2026
- gpt-oss 20B: RTX 3060 12GB vs Ryzen 5 5600G CPU-Only (2026)
- Claude Fable 5 Launches at #1 on the Intelligence Index — What Local Builders Should Take Away
- Lemonade v10.5.1: an MTP + ROCm 7.13 quick start for Strix Halo
- Best CPU for Streaming and Gaming Under $300: Ryzen 7 5800X vs 5700X vs 5600G
- Best AMD Ryzen 5000 CPU for Gaming in 2026: 5 Picks
- Best GPU for Local LLMs Under $400 in 2026: Why 12GB Still Wins
- Open WebUI on a Raspberry Pi 4: A Self-Hosted LLM Front-End That Sips Power
- Alienware AW3426DW Review: QD-OLED Ultrawide Gaming at $699
- MSI Raider 16 Max HX Review: Elite Gaming and Creator Power
- Jetson Orin Nano Super for ROS 2 Robotics: Build Guide + Real Latency Numbers
- Jellyfin on Raspberry Pi 4 8GB with an SSD (2026 Guide)
- Best USB Microphone for Game Streaming on Twitch (2026)
- Mistral Medium 3.5 Dense Local Inference: Hardware Tiers from 24GB to 192GB
- Best Budget Gaming PC Parts in 2026: A Ryzen + RTX 3060 Build
- NVMe vs SATA SSD for a 2026 Gaming PC: WD_BLACK SN770 vs the Value SATA Trio
- Best Wireless Controller for PC Gaming on Couch and Living Room (2026)
- Cursor vs Cline vs Aider for Local-First AI Coding in 2026
Earliest SpecPicks reviews
Browse full archive →- Best GPU for Llama 3.1 8B (2026)
- Best GPU for Qwen 3 14B (2026)
- Best GPU for Qwen 3 32B (2026)
- Best GPU for Llama 3.1 70B (2026)
- Best GPU for DeepSeek-R1 32B (2026)
- Best GPU for Llama 3.1 405B (2026)
- How to run Llama 3.1 8B on NVIDIA GeForce RTX 5090
- How to run Qwen 3 14B on NVIDIA GeForce RTX 5090
- How to run Qwen 3 32B on NVIDIA GeForce RTX 5090
- How to run Llama 3.1 70B on NVIDIA GeForce RTX 5090
- How to run DeepSeek-R1 32B on NVIDIA GeForce RTX 5090
- How to run Llama 3.1 8B on NVIDIA GeForce RTX 4090