Last Updated or created 2025-09-01
A while ago I was playing with LoRa (Long Range radio), I made a simple setup which worked good enough.
After that I installed Meshtastic
I also used OpenMqttGateway with LoRa.
I’ve been using antennas also with SDR(Software Defined Radio.
Not happy with the performance, I bought a Nano-VNA.
(Vector network analyser)
Due to the many options, I was lost at first. Maybe I have to ask Bigred.
Calibrating I get now, but I can’t easily calibrate an antenna with fixed cable.
Much to learn, but that’s what I want. 🙂
I bought a VNA/Antenna test board from Ali.
Feature:
- RF Demo Kit RF test board demo calibration board for learning Vector Analyzer and Antenna Analyzer test calibration.
- The board is fully integrated with 18 functional modules.
- Equipped with 2 UFL patch cords for convenient use.
- Each module is carefully selected for high quality and reliability.
- The board is small and lightweight, easy to carry.
Specification:
Product type: RF Demo Kit
- Filters:
- A. Short low-pass filter (LPF): 30 MHz
- B. FM high-pass filter (HPF): 100 MHz
- C. Commonly used SAW band-pass filter (BPF): 433 MHz
- D. Video ceramic notch (band-stop filter, BSF): 6.5 MHz
- RLC series and parallel circuits
- Includes R, L, C and combination circuits
- Open/short and load calibration circuit
- Attenuation circuit
Package List:
- 1 × RF Demo Kit Board
- 2 × UFL patch cables