# Heltec HT1303

> A mini-PCIe LoRaWAN concentrator module based on Semtech SX1303 + SX1250, enabling easy integration of LPWAN gateway capabilities into routers, Raspberry Pi, or other platforms with standard mini-PCIe slots.

## Quick Facts

- **Brand:** Heltec
- **Board Type:** LoRa Concentrator Module
- **Price:** ~$49
- **Product Readiness:** consumer
- **CPU:** SX1303,SX1250
- **CPU Architecture:** Custom digital baseband
- **CPU Cores:** 1
- **RAM:** N/A (host-dependent)
- **Flash:** N/A (host-dependent)
- **Power:** 3.3V via mini-PCIe slot
- **Operating Voltage:** 3.3V
- **Operating Temp:** -40°C to 85°C
- **Dimensions:** 51 × 30 × 10.5 mm
- **Weight:** 50 g
- **Antenna:** IPEX 1.0 (U.FL)
- **SD Card:** No

## Connectivity

- **Lora:** 470-510, 863-870, 902-928 MHz

## Open Source

- **Firmware:** No
- **Schematics:** No
- **PCB Layout:** No

## Use Cases

- iot-gateway

## Components

- **undefined**: Semtech SX1303 LoRa concentrator chip providing 49 virtual LoRa demodulators and 10 parallel demodulation paths for multi-channel LoRaWAN gateway operation. — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fwww.semtech.com%2Fproducts%2Fwireless-rf%2Flora-core%2Fsx1303&ref=openhardware.directory&product=heltec-ht1303&source=md-export)
- **undefined**: Semtech SX1250 sub-GHz radio transceiver providing Tx/Rx front-end for LoRa and FSK modulation across 150-960 MHz frequency range. — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fwww.semtech.com%2Fproducts%2Fwireless-rf%2Flora-transceivers%2Fsx1250&ref=openhardware.directory&product=heltec-ht1303&source=md-export)

## Protocols

- **undefined**

## Description

## Overview

The Heltec HT1303 is a mini-PCIe-based LPWAN concentrator module built around the Semtech SX1303 digital baseband chip and SX1250 Tx/Rx front-end. It enables easy conversion of computers, Raspberry Pi, or routers into LoRaWAN gateways by simply plugging into a standard mini-PCIe slot.

## Key Features

- **SX1303 + SX1250 chipset** — emulates 49 LoRa demodulators and 1 (G)FSK demodulator
- **10 programmable parallel demodulation paths** for high-capacity gateway operation
- **Multi-band support** — 470–510 MHz, 863–870 MHz, 902–928 MHz
- **Dual interface** — SPI or USB connectivity to the host
- **Industrial mini-PCIe form factor** (52-pin golden finger connector)
- **Wide operating temperature** — -40°C to 85°C
- **Dynamic data-rate adaptation (ADR)** with automatic adaptive spread spectrum (SF7–SF12)
- **Listen Before Talk (LBT)** optional support
- **Windows and Linux USB drivers** provided

## Proven Track Record

The HT1303 module is used in several proven Heltec commercial gateway products including the HT-M01S, HT-M02, HT-M7603, and HT-M2802.

## RF Performance

| Parameter | Value |
|---|---|
| Sensitivity (SF7, 125 kHz) | -125 dBm |
| Sensitivity (SF12, 125 kHz) | -139 dBm |
| Max TX Power | 27 ± 2 dBm |
| Antenna Connector | IPEX 1.0 (U.FL) |

## Power Consumption

| Mode | SPI | USB |
|---|---|---|
| Standby | 7.8 mA | 19 mA |
| TX (max power) | 407 mA | 420 mA |
| RX | 40 mA | 51 mA |

## Where to Buy

- [Buy for $49](https://openhardware.directory/r?to=https%3A%2F%2Fheltec.org%2Fproject%2Fht1303%2F&ref=openhardware.directory&product=heltec-ht1303&source=md-export)

## Resources

- [product](https://openhardware.directory/r?to=https%3A%2F%2Fheltec.org%2Fproject%2Fht1303%2F&ref=openhardware.directory&product=heltec-ht1303&source=md-export)
- [manufacturer](https://openhardware.directory/r?to=https%3A%2F%2Fheltec.org&ref=openhardware.directory&product=heltec-ht1303&source=md-export)

## Tags

`lorawan`, `gateway`, `concentrator`, `mini-pcie`, `sx1303`, `sx1250`, `lpwan`

## Images

![Heltec HT1303](https://heltec.org/wp-content/uploads/2023/09/QQ截图202204191829231.png)

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