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مميزات خاصة
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 this command: mmdvm.club/index.php/wpsd .html)
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
WORK with RASBERRY Pi: Mounts cleanly on current Raspberry Pi including the Pi Zero , NOT compatible with Rasberry Pi 4.
FREQUENCY: Radio Frequency : Freq:144-148,219-225, (Main Band) 420-475,842-950 NOTE: TX =0, RX=0. Modem select: STM32-DVM/MMDVM_HS-Raspberry pi Hat(GPIO) or any other (GPIO board)
The MMDVM Duplex Hotspot board is latest firmware V1.5.2. How to update firmware: (pi-star / expert / ssh access / user :pi-star pass:raspberry) then run sudo pistar-mmdvmhshatflash hs_dual_hat set Jumper BOOT0=1,BOOT1=0 and soler JP1 First! After upgraded finished, disconnect JP1 (After testing, this method can upgrade the firmware)
وصف
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)