RFSPΔCΞ

[Pieter Ibelings @ibelings]

Testing per-sample IQ Doppler correction in SpectraFlux. Satellite tracking software sends frequency updates via rigctld — instead of retuning the SDR (which causes PLL transients and audio glitches), the correction is applied as a phase-continuous NCO rotation on every IQ sample. SDR parks at a clean center frequency, Doppler offset handled entirely in the digital domain. Zero retune latency, no phase discontinuities. Here's a Python script driving a ±50 kHz sinusoidal S-curve through rigctld while the spectrum tracks it smoothly.

SpectraFluxのIQドップラー補正をテスト中。 衛星追尾ソフトからrigctldで周波数更新を受信し、SDRの再チューニングではなく、IQサンプルごとにNCO位相回転で補正を適用。PLLの過渡応答やオーディオの途切れがゼロ。Pythonスクリプトで±50kHzの正弦波ドップラーカーブをシミュレーションしています。

[Pieter Ibelings @ibelings]

Riding the FM station! Will have to add some avionics.

[Pieter Ibelings @ibelings]

If you are into SDR, buy a Mac mini. Go into debt if you have to.Or a Studio. You'll want it for what's coming.

SpectraFlux beta is up. Apple Silicon only. No support.

https://t.co/xerMaMg2f6

[RFSPΔCΞ @rfspace]

@karthikponna19 Parallels?

[RFSPΔCΞ @rfspace]

📡New DIP915 for 902-928 MHz, ground insensitive antenna. Regardless of size of groundplane or how the radio is held, resonance stays in band. High efficiency for Meshtastic and other IoT applications. https://t.co/T2EL2Qhd94

[Pieter Ibelings @ibelings]

📡 New: CloudSDR Protocol Emulator
🐍 Python framework for SpectraVue integration
🔓 Bypasses SpectraVue hardware checks
🛠️ Starting point - extend for RTL-SDR, HackRF, etc. 📊 Dummy I/Q included, add your radio's data stream
Build your own SDR bridge!
https://t.co/GUdbkuCVUt

[RFSPΔCΞ @rfspace]

@MehdiHacks Customers have bought them on Amazon sites from EU and also @wimo_de

[RFSPΔCΞ @rfspace]

The new LPDA-IOT Log Periodic Antenna is now available on Amazon. Covers 600-2800+ MHz with a high quality SMA connector. https://t.co/3NaJjB3wjy

[RFSPΔCΞ @rfspace]

The @RFSPACE LPDA-IoT is now in stock at Amazon. Antenna covers 600 MHz to 2.8 GHz. Limited availability. https://t.co/HHSfPxGRDX

[RFSPΔCΞ @rfspace]

The @RFSPACE 4.0 - 26.5 GHz Vivaldi is now in stock at Amazon. https://t.co/HHSfPxGRDX

[RFSPΔCΞ @rfspace]

Yet another Log Periodic antenna for IoT applications.

[RFSPΔCΞ @rfspace]

@ibelings Time flies...

[RFSPΔCΞ @rfspace]

@ibelings

[RFSPΔCΞ @rfspace]

@K1DLM see if this works for you: https://t.co/MG7aqVQPuZ

[Ryzerth 🐲 @ryzerth]

Just revamped the network code of the SDR++ @rfspace source to use the new networking library. Along the way I also fixed the buffering issues that were audio dropouts. Everything seems to work fine on my hardware (Cloud-IQ) but testing is needed on the older models. #sdr #sdrpp

[RFSPΔCΞ @rfspace]

@arturo182 Advertise your account with one PCB.

[RFSPΔCΞ @rfspace]

@Zane_Thackeray @ibelings what is is called?

[RFSPΔCΞ @rfspace]

@ryzerth @dsn_sdr 2.048 MS/s is the rate. It has a very sharp FIR filter in the decimator and is 16bit IQ pairs.

[RFSPΔCΞ @rfspace]

@Dave_Maynor Thanks David!!