MMDVM_HS_dual_hat Duplex MMDVM Hotspot P25 DMR YSF NXDN Pi Rev 1 3 + OLED

describe: - Duplex variant of MMDVM_HS_Hat - This PCB uses MMDVM_HS. It has two ADF7021s onboard and allows duplex operation with two time slots in the DMR. - Added accidentally removed 3v3 cable in PCB layout. The BOM Mouser cart and templates are consistent with rev1.1. - The upper part is the TX and the lower part is the RX antenna. -UHF+VHF-SMA Antenna-Modem select: stm32_hs_gpio-settings TX Frequency RX Frequency - TX RX The frequency is best at a distance of 10M or more. - Support SLOT1 slot2. Features: - High performance 32-bit ARM processor - Thoroughly tested - Compatible with DMR P-25 d-star and System Fusion - Integrated LED to show status (Tx Rx PTT Mode) - Up to 10mW RF power -SMA antenna connector including antenna -Mounting available Safely cleans all current Pis including Pi Zeros. - Pre-installed firmware easy upgrade via software. - Provides an open source 3D printed enclosure -UHF 430-450MHz 433mhz and 900MHz -VHF 144 220 Opera FREQ Notice: 1. Hardware version 1.3 software version 1.4.17 2. No case 3. Pi not included 4. The firmware is preloaded. Please do not update the firmware by yourself. The package includes: 1*MMDVM hotspot module 2* Antennas 2* seat 2*pin header