New arrival :If you want to buy the finished MMDVM hotspot power bank ,please click this link
//www.PORTAL.com/item/1005003731255897.html
The default bit error rate is less than 5, and the default offset is 0. If the bit error rate is more than 5, as long as the signal can be received, it can be corrected by offset. 1.Latest version V1.3, and the firmware is latest
2. 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.
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 Pis 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:
– MMDVM duplex HotSPOT Module x1 – Antenna x 2 – SMA socket x 2pcs
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New arrival :If you want to buy the finished MMDVM hotspot power bank ,please click this link
The default bit error rate is less than 5, and the default offset is 0. If the bit error rate is more than 5, as long as the signal can be received, it can be corrected by offset. 1.Latest version V1.3, and the firmware is latest
2. original cystal : Original from USA
Duplex variant of MMDVM_HS_Hat
This PCB uses the MMDVM_HS
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