RTL-SDR Blog V4
Ultra-affordable USB receive-only SDR covering 500 kHz to 1.766 GHz, ideal for GSM reconnaissance, ADS-B, and passive cellular monitoring.
RTL-SDR Blog V4 — Budget Passive Receiver
The RTL-SDR Blog V4 is the most affordable way to get started with cellular signal monitoring. Based on the RTL2832U chipset with R828D tuner, it provides receive-only capability perfect for passive GSM capture, LTE cell scanning, and IMSI catcher detection.
TelcoChisel Compatibility
| Parameter | Value |
|---|---|
| Driver | rtl-sdr 2.0.1 (pre-installed) |
| DVB-T Blacklist | ✅ Auto-configured |
| Kernel | 6.8.0-rt-telco |
| Status | ✅ VERIFIED_STABLE |
| Max Sample Rate | 3.2 MS/s (stable at 2.4 MS/s) |
DVB-T Driver Blacklisting
TelcoChisel automatically blacklists the DVB-T kernel driver to prevent conflicts:
# Verify blacklist is active
cat /etc/modprobe.d/blacklist-dvb.conf
# Should contain: blacklist dvb_usb_rtl28xxu
# If not present:
echo "blacklist dvb_usb_rtl28xxu" | sudo tee /etc/modprobe.d/blacklist-dvb.conf
sudo modprobe -r dvb_usb_rtl28xxu
Quick Setup
# Verify detection
rtl_test -t
# Quick FM radio test
rtl_fm -f 100.0e6 -M wbfm -s 200000 -r 48000 | aplay -r 48000 -f S16_LE
# GSM cell scan with Kalibrate-RTL
kal -s GSM900 -g 40