Search found 3 matches

by blackwiz4rd
Tue Mar 09, 2021 9:24 am
Forum: Troubleshooting Help
Topic: Receiving NFC signals from contactless card - 13.56MHz HF
Replies: 3
Views: 1340

Re: Receiving NFC signals from contactless card - 13.56MHz HF

14.4 MHz is the Nyquist zone cutoff point, so things can get a bit funky around that frequency. This might be a case where an upconverter with an amplifier is required. You could also try disconnecting the VHF/UHF path by removing C13 (next to D6 by the MCX connector). That might stop some signal l...
by blackwiz4rd
Fri Feb 19, 2021 1:23 pm
Forum: Troubleshooting Help
Topic: Install plugins
Replies: 1
Views: 761

Re: Install plugins

Hi,
you should specify which plugins and which new version you are talking about and for what dongle for someone to understand.
by blackwiz4rd
Fri Feb 19, 2021 10:58 am
Forum: Troubleshooting Help
Topic: Receiving NFC signals from contactless card - 13.56MHz HF
Replies: 3
Views: 1340

Receiving NFC signals from contactless card - 13.56MHz HF

Hi everyone, I specifically need to receive the signal coming from an NFC communication. The carrier wave is at 13.56MHz. However, I need to demodulate the card signal, whose subcarrier is at 13.56MHz+/-847.5MHz = 14.4075MHz, 12.7125Mhz. The problem is there seems to be a lot of noise at 14.4MHz com...