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V1.3 MMDVM_HS_Dual_Hat Duplex Hotspot +OLED +Antenna Support P25 DMR YSF NXDN

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Description
Item Specifics
 V1.3 MMDVM_HS_Dual_Hat Duplex Hotspot + OLED +Antenna Support P25 DMR YSF NXDN

 

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.

 

Revision 1.3

An accidentially deleted 3v3 wire has been added back to the PCB layout. BOM, Mouser cart and stencil stay the same as for rev1.2.

 


Features: 
- High performance 32-bit ARM processor
- Fully tested
- Supports DMR, P-25,D-Star and System Fusion
- Onboard LEDs to show status (Tx,Rx,PTT,Mode)
- Up to 10mW RF power
- SMA antenna connector,Antenna included
- Mounts cleanly on all current Raspberry Pi's including the Pi Zero
- The firmware is pre-loaded and is easily upgraded via software.
- Open source 3D printable case available
- UHF 430-450 MHz,433mhz and 900MHz


VHF 144 220 Opera FREQ



The upper part is TX,the lower is RX antenna.
UHF+VHF
SMA,antenna
Modem select:STM32_HS_GPIO
Set TX frequency,RX frequency
TX,RX frequency had better 10M or more apart.
SLOT1,SLOT2 support.

Package List:

 

Assembled item including the below parts 
- MMDVM duplex HotSPOT Module x1

 

- Antenna x 2

 

- oled x1




 

 

Description

Item Specifics