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UHF VHF UV Hotspot Module with For DMR P 25 D Star and System Fusion Support
DESCRIPTION


Description:
Our simplex and duplex s all use an offset of 0, which is our duplex . Regardless of simplex or duplex, the offset is 0.
We are using high-precision temperature compensated crystals, so it is 0
We use high cost TCXO crystal with extremely low bit error rate, offset of 0,
and frequency error of 0
 
new pi4b need remove R1 Resistor.
STM32_for MMDVM_HS HAT Rev1.7 Guide

1.Hardware add (SDA,SCL)R20,R21 Connect stm32 i2c 2 bus to OLED,and raspi. oled message pwr on without RPI using for mmdvm_hs custom fw,and i2c 2 bus.
2.Support i2c communication with raspi
Setting For Pi-star software and for raspberry hardware (rpi 0-3) new pi4b need remove R1 Resistor.
Controller Mode: Simplex Node
Radio Frequency: Freq:144-148,219-225,(Main Band)420-475,842-950
Example:438.000000
Radio/Modem Type:STM32-DVM(GPIO)
14.7456 TCXO with RXOFFSET=0 TXOFFSET=0

Quick start:
1.download image https://www.pistar.uk/downloads/ write it to card
2.insert card to rpi
3.wait to boot 5 minutes connect wifi Pi-star-setup pass for raspberry
4.open http://pi-star/admin/
5.set freq,dmr id,dmr mode,add home's wifi ssid...
Default Username: pi-star
Default Password: for raspberry

to support i2c communication change for MMDVM_HS code(by Andy Uribe CA6JAU)->Config.h

// Host communication selection:
//#define STM32_USART1_HOST
//#define STM32_USB_HOST
#define STM32_I2C_HOST
to disable i2c 2 to raspi and oled just remove R20,R21
update new FW: (pi-star / expert / ssh access / user :pi-star pass:raspberry)
sudo pistar-for mmdvmhshatflash hs_hat
ps:update new FW no oled pwr on message.
mode info pls visit

The for MMDVM hotspot support module can work with UHF or VHF(VHF is not the main band)
 
Specification:
· High performance 32-bit AR M processor
· Fully assembled and tested
· Supports DMR, P-25, D-Star and Fusion
· Onboard LEDs to show status (Tx, Rx, PTT, Mode)
· Up to 10mW RF power
· SMA antenna connector, UHF&VHF antenna included
· Mounts cleanly on all current for Raspberry Pi's including the Pi
· The firmware is pre-loaded and is easily upgraded via software.
·UHF 433 900 MHZ, VHF 144 220 MHZ Opera FREQ
· Supported and tested with PI-STAR
Please note: The product does not come with a memory card or motherboard. You need to start it to connect to the hotspot, insert the memory card, and then connect to the hotspot to light up the screen.

Packing list:
1*Single hotspot expansion board
1*OLED screen
1*shell
1*Antenna
 
Please do not upgrade the firmware by yourself, if you have not the knowledge for it.
The product needs to be soldered with the pi motherboard (not included), please make sure you know it before buying.



Note:
1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.
2. Please allow slight manual measurement deviation for the data.

POLICES

 

We only ship to confirmed Paypal addresses. Please comfirm that your paypal address is in line with your shipping address.

 

Please kindly note that the combined shipping is not provided because the shipping fee is calculated by weight. Also, the each additional item means exactly the the same color and size. 

 

It takes about 7-15 working days to UK; about 10-30 working days to other countries. Transit time may be a little delayed because of the bad weather and customs inspection. If you do not receive your item within 30 working days since payment finished, please contact us immediately for further assistance.

 



We accept payment via Paypal only.

Payment must be completed within 5 days. If you have any problems about payment, please contact us via ebay message.


 

We strive for 100% customer satisfaction! Positive Feedback is very important to us. If you have any questions, please feel free to contact us via "Ask seller a question" . We will reply your email within 24 working hours.



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