YO4HFU
CANFI - RTL820 NOISE FIGURE METER



CANFI - Cheap Analyzer Noise Figure Indicator

Noise Figure Meter up to 1,5GHz using DVBT SDR RTL820T/RTL2832.
CANFI was developed by DL2ALF, DF9IC, DL8AAU - Website CANFI.

Necessary items:
- SDR RTL2832 with RTL820T tuner or E4000, shielded in metal box.
- MMIC PGA103+ Amplifier or other wideband amplifier. Power supply 5V.
- Step-up power supply 5V/28V or other 28Vdc supply (XL6009 tested ok)
- USB to Serial Interface FT232L, CH340G. I not recommend PL2303. Use RTS or DTR pinout. ( FT232 tested ok)
- Noise Source home made (calibrated) or commercial
- Optional USB HUB, to combine the ports used by SDR RTL and Serial Interface. Hub "Digitus" (FE1.1s chip) working good. Don't use Hub "Manhattan" (GL850G chip).


 


CANFI Block Diagram
Noise Source BFR93
Noise Source NS-30x diode VHF Comm 1/2007
28V Switch for Noise Head
CANFI Windows software V.2.7
CANFI User Manual

CANFI GALLERY
SDR CANFI
NOISE HEAD BFR93
CANFI SOFTWARE





Home

[email protected]