GOOZEEZOO V1.5.2 MMDVM Duplex Dual Hotspot Hat With OLED Display Supporting DMR P25 D-Star YSF NXDN And VHF And UHF Coverage For Raspberry Pi
Why you'll like it
- True Full-Duplex Operation — Features dual ADF7021 transceiver chips enabling simultaneous transmit and receive functions across separate time slots and frequencies.
- Comprehensive Protocol Support — Operates seamlessly with DMR Slot 1 and Slot 2, P25, D-Star, YSF System Fusion, and NXDN digital voice modes.
- Real-Time Status Monitoring — Includes an integrated 0.96-inch OLED screen and clear LED indicators for tracking transmission, reception, and mode status.
- Seamless Raspberry Pi Integration — Mounts directly onto compatible single-board computers using the standard GPIO header for easy setup and configuration.
Product details
Description
The GOOZEEZOO V1.5.2 MMDVM Duplex Dual Hotspot Hat is an advanced digital voice modem board engineered for amateur radio enthusiasts. Designed to mount seamlessly onto a Raspberry Pi via the GPIO header, this dual-antenna module features dual ADF7021 transceiver chips for true full-duplex operation.
It allows operators to bridge digital voice protocols such as DMR Slot 1 and Slot 2, P25, D-Star, YSF System Fusion, and NXDN directly to internet gateways like Pi-Star. Equipped with an onboard 0.96-inch OLED status display and real-time LED indicators for transmission, reception, and mode activity, it delivers reliable high-performance amateur radio connectivity.
Pre-flashed with v1.5.2 firmware and fully upgradeable via SSH, this versatile hat provides robust VHF and UHF frequency coverage for modern digital radio communication setups.
How to use
- Mount the MMDVM duplex hat onto the GPIO header of a compatible Raspberry Pi model.
- Configure your Pi-Star software settings by selecting the appropriate modem type, such as STM32-DVM or MMDVM_HS-Raspberry Pi Hat.
- Connect your digital radio frequencies and monitor real-time talkgroup activity via the onboard OLED display.
Ingredients
32-bit ARM Processor, Dual ADF7021 Transceiver Chips, Onboard 0.96-inch OLED Display Screen, GPIO Header Pins, RF Antennas
As printed by the brand. Check the pack label if you have an allergy.
Specifications
| Brand | GOOZEEZOO |
|---|---|
| Ships from | USA (sourced directly), checked in Navi Mumbai |
| Sold by | Dropy.in |
Ratings & reviews
From our customers
FAQs
What is a duplex hotspot?
A duplex hotspot features two transceiver chips allowing simultaneous transmit and receive functions, supporting dual-slot digital voice communications like DMR Slot 1 and Slot 2 at the same time.
What digital modes are supported by this MMDVM hat?
This device supports multiple digital amateur radio protocols including DMR Slot 1 and Slot 2, P25, D-Star, YSF System Fusion, NXDN, and POCSAG.
Which Raspberry Pi models are compatible with this board?
The hotspot hat mounts via GPIO onto various Raspberry Pi models including Pi 1, 2, 3, 3B+, Zero, Zero 2W, and Pi 4.
Are the products sold on Dropy authentic USA imports?
Yes, all products available on Dropy are 100% authentic items sourced directly from the United States to ensure genuine quality for Indian customers.
How do I update the firmware on the MMDVM duplex hat?
Firmware can be updated easily via SSH command line using Pi-Star expert terminal commands such as sudo pistar-mmdvmhshatflash hs_dual_hat.
How long will delivery take?
Most orders arrive in 15–20 days: we source each product directly from the USA, check it at our Navi Mumbai warehouse and pack it on video. Items marked Dropy Express ship from our India warehouse and arrive in 3–5 days.
Is cash on delivery available?
Full cash on delivery is available all over India on Dropy Express items. For other orders from ₹2,499 to ₹15,000 you can use Partial COD: pay 25% online now and the rest in cash on delivery.
Are your products genuine?
Yes. Every product is 100% authentic, sourced directly from the USA, quality-checked and packed on video at our Navi Mumbai warehouse.
What if my order arrives damaged or wrong?
Write to us at [email protected] as soon as it arrives. Damaged, wrong or not as described, our Buyer Protection gives you a full refund. The details are in our Return, Refund & Cancellation Policy.
Is delivery free?
Delivery is free on orders from ₹1,499. Below that a ₹79 delivery fee applies.