Features:
Mini and Portable, L/W/H 5.6x6x4.1mm, Two way circulation and natural heat dissipation to avoid fan noise
Support MMDVM mode: DMR/YSF/P25/NXDN/DSTAR/POCSAG
Frequency range: 144-146Mhz,420MHz-475MHz,842MHz-950MHz
3xFast Setting Speed then raspberry zerow /2w,don't wait.
Replaceable folding antenna,center frequency 433MHz.
External USB port for USB wifi | rtlsdr stick |Usb to Serial connect Nextion 2.x-3.x tft screen
Certified seller：AURSINC/LUSYA with technical support
Including && components
1x MMDVM for nano PiHAT,
1x folding antenna,
1x Nanopi NEO 256M,
1x 16G/8G C10 TF Card
1x 0.96-inch OLED

Options:
1.USB to Usart ,use for link and power Nextion display.
2.USB WiFi support wifi function

Specs and Docs:
Power require: 5V2A
MCU: F103C8T6
Transceiver IC: ADF7021,Programmable output power: -16dBm to +10dBm
TCXO: 14.7456MHz,±2.5 ppm
PCB: 40mmx40mmx1.2mm
Host: NanoPi NEO 256M RAM,v1.4,A3 Architecture
Options USB WiFi: RTL8188CUS
OLED: I2C 128*64px, blue color
SDCard: 8Gb
Charging cable: Micro USB can transfer data, support 5V2A

http://wiki.friendlyarm.com/wiki/index.php/NanoPi_NEO

**Modem TYPE："MMDVM_HS_NPi Hat (VR2VYE) for Nano Pi(GPIO)"
update FW： sudo pistar-vyehsflash nano_hs**
http://www.pistar.uk/beta/Pi-Star_NanoPi_V4.1.5_25-Jun-2021.zip
Warning:
Be sure to use a qualified power supply 5V2A, non-conforming power will lead to bit error rate(BER) instability, Overvoltage will burn this NanoPi and HAT！

Easy to Start:
Just MicroUSB power it,Connect RJ45 with Router,Computer connect Router Open http://pi-star(win) or http://pi-star.local(MAC) to start,login user pi-star pass raspberry

/home/jumbo/hackrf/firmware/common/ui_portapack.c

const hackrf_ui_t* portapack_hackrf_ui_init() {

if( portapack() ) {  //switch to hackrf_usb mode, if portapack install set lcd blue screen
    return &portapack_hackrf_ui;
} else {
    return NULL;
}

}
/home/jumbo/hackrf/firmware/common/portapack.c
static uint32_t jtag_pp_idcode(void) {

cpld_jtag_take(&jtag_cpld);

/* TODO: Check if PortaPack TMS is floating or driven by an external device. */
gpio_output(jtag_cpld.gpio->gpio_pp_tms);

/* Test-Logic/Reset -> Run-Test/Idle -> Select-DR/Scan -> Capture-DR */
jtag_pp_shift(0b11111010, 8);

/* Shift-DR */
const uint32_t idcode = jtag_pp_shift(0, 32);

/* Exit1-DR -> Update-DR -> Run-Test/Idle -> ... -> Test-Logic/Reset */
jtag_pp_shift(0b11011111, 8);

cpld_jtag_release(&jtag_cpld);

return idcode;

}
static bool portapack_detect(void) {

return jtag_pp_idcode() == 0x020A50DD;   

//i change this code to "return jtag_pp_idcode() >0;" to support
//Portapack H2 TQFP100 v3.6pcb fix fw v1.4.2
}

static const portapack_t portapack_instance = {
};

static const portapack_t* portapack_pointer = NULL;

const portapack_t* portapack(void) {

return portapack_pointer;

}

void portapack_init(void) {

if( portapack_detect() ) {
    portapack_if_init();
    portapack_lcd_reset();
    portapack_lcd_init();
    portapack_pointer = &portapack_instance;
} else {
    portapack_pointer = NULL;
}

}