Hi there,
SO use Caution,
The TinySA is a low-cost spectrum analyzer. You can use it to get a rough estimate of LoRa output power: I have it’s cousin the tiny oscilloscope 
- DO NOT connect the antenna output of Wio-SX1262 directly to TinySA — the module can put out +22 dBm (≈ 160 mW) while TinySA’s safe input limit is much lower (~+10 dBm without attenuator).
- You must use an external attenuator (30–40 dB fixed attenuator recommended) between the module and the TinySA input.
- Connect via coax from the Wio-SX1262 RF output (through attenuator) to TinySA.
Since LoRa signals are spread-spectrum, on a TinySA they appear as a wide “hump” rather than a sharp spike. To generate test signals:
- Easiest: Write a small sketch that makes the SX1262 send a long continuous packet or a continuous wave (CW).
- Continuous Wave Test (CW): Many SX126x libraries include a
setTxContinuousWave(freq, power, timeout)function for RF testing. That produces a pure carrier tone at the chosen frequency, easy to measure on TinySA.
Example (Arduino-RadioLib):
radio.setTxContinuousWave(915.0, 22, 0); // 915 MHz, 22 dBm, no timeout
If CW mode isn’t available, send continuous packets at low data rate — the analyzer will still show a wide signal “hump”.
- There’s no “AT command” on the Wio-SX1262 board itself — you need to run firmware that tells the SX1262 to TX continuously.
- Use
setTxContinuousWaveor equivalent in Arduino RadioLib / Seeed LoRaWAN library. - Insert a 30–40 dB attenuator before feeding into TinySA.
- Tune TinySA to the LoRa frequency, measure peak power, and adjust for the attenuator.
You could also go the SDR route, an SDR (software-defined radio) can be another good way to observe and roughly measure LoRa TX output from a Wio-SX1262.
SDR vs TinySA
- TinySA is a spectrum analyzer → it gives you calibrated RF power readings (with an attenuator), but limited resolution bandwidth and accuracy.
- SDR dongles (RTL-SDR, HackRF, LimeSDR, USRP, etc.) → they’re primarily for reception/analysis, not calibrated for power. They let you see the waveform shape and bandwidth but power levels are only approximate unless you calibrate with a known reference signal.
So:
- TinySA → better for dBm measurements.
- SDR → better for signal visualization, bandwidth, modulation, and spectrum occupancy.
2. What You’ll See on SDR
- A LoRa packet will show up as a wide “chirped hump” about 125–500 kHz wide depending on spreading factor and bandwidth.
- With GNU Radio, SDR# (Windows), or CubicSDR you can clearly see bursts when the Wio-SX1262 transmits.
- If you enable continuous wave (CW test mode), you’ll see a narrow spike at the TX frequency (much like a normal carrier).
3. How to Measure with SDR
- Don’t connect directly — just use an antenna on the SDR near your Wio-SX1262 antenna, or couple through a very high attenuator if you want direct coax.
- SDR front-ends are sensitive (can be damaged above ~0 dBm).
- You can approximate TX power by comparing the LoRa signal strength against a known source (calibrated signal generator or a reference beacon at known power/distance).
- Some SDRs (HackRF, LimeSDR) have a “power detector” mode but still less accurate than a TinySA.
The work flow is the same you can see by the AI recount of using an SDR. It is an interesting topic, takes specific hardware to do it 
But you can get Dam close… 
Hope that helps motivate you to the next level and please post up any results or finding you discover.
GL 
PJ 
not like measuring the POWER of this BABY
first pick (wineglass position ) I’m in two places at once ZOOM… LOL
Feed horns were as big as me, I could crawl inside the Waveguide… 