Skip to main content
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)
AURSINC

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.

Check price on Amazon

As an Amazon Associate, SpecPicks earns from qualifying purchases. Full disclosure →

Mike Perry — Hardware researcher since 2014, focused on GPU performance across gaming, rendering, and local-LLM inference. Synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides.

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

UPC753318593268
ASINB089JYBXHQ
BrandAURSINC
Model NameAURSINC MMDVM Duplex Hotspot Module Dual Hat
ManufacturerAURSINC
Model Number2020
Mfr Part Number2020
Processor Count1
Total Usb Ports4
Compatible DevicesRaspberry Pi 1, 2/2b, 3/3b/3b+, 4/4b, Pi Zero, Pi Zero 2W, GPIO boards
Warranty Description1 year
Wireless CompabilityRadio Frequency
RAM Memory TechnologyDDR3, LPDDR3
Connectivity TechnologyGPIO
Wireless Communication StandardRadio 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.

Check price on Amazon →

More guides & deep dives from the SpecPicks archive

Browse all articles & guides →

More reviews from the SpecPicks archive

Browse all reviews →

Earliest SpecPicks reviews

Browse full archive →