Duplex MMDVM Hotspot Support D-Star DMR YSF Pi+ OLED Revision 1.3 VHF ADF7021 US

Description: Notice： Tantalum capacitor filtering circuit, stable operation, can start up in 7x24 hours The DMR usage effect is very good Supports OLED screens and serial Nextion screens Paired with Raspberry Pi, it's ready to use Description: - 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. - An accidentially deleted 3v3 wire has been added back to the PCB layout. BOM, Mouser cart and stencil stay the same as for rev1.1. - 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. 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 Note: 1. Hardware version 1.0, software version 1.4.17 2. Without shell 3. Not include the raspberry pi 4. The firmware is pre-loaded.Please do not upgrade the firmware by yourself. 5. No welding, welding and matching according to personal needs, cannot be plug and play, it is recommended to operate professionally. Package Included: MMDVM Hotspot Module +OLED +2 Antennas NOTE: Communication is the best way to solve the problem. If you have any problems after purchasing, please contact us in time, before opening return or case. Shipping Policy: We ship item within 24 hours after payment has been verified (Orders are not processed on holidays). All items will be shipped to buyer’s ebay address. Please make sure your receiving address is correct before your pay. Return Policy: If you need return, let us know the detailed problem and send us some pictures for confirmation. Then get a address for return or refund . Contact us: If you do have any questions or concerns, please feel free to contact via eBay's contact seller button. We will answer your email within 24 hours except Holidays, Saturday and Sunday. Feedback: If you are satisfied with the product you received, please feel free to leave us positive ( + ) feedback. Please contact us before you leave us a Neutral/Negative feedback, we will always try our best for 100% customer satisfaction.

Price: 35.11 USD

Location: Chino, California

End Time: 2024-09-20T05:26:43.000Z

Shipping Cost: 0 USD