Search found 13 matches

by Eagle72
Sun Jan 13, 2019 2:20 am
Forum: Antennas
Topic: Best antenna for 1mhz-50 and 1khz - 800khz
Replies: 5
Views: 14890

Re: Best antenna for 1mhz-50 and 1khz - 800khz

I see what you mean and thanks very much for your ansver, actually i thought opposite smaller antenna for low freq.. Happy to be member of this forum.. cheers
by Eagle72
Sat Jan 12, 2019 10:18 pm
Forum: Antennas
Topic: Best antenna for 1mhz-50 and 1khz - 800khz
Replies: 5
Views: 14890

Best antenna for 1mhz-50 and 1khz - 800khz

Hi.

Im very new on this field and trys to learn how radio signals works, my question is what is the best antenna to recieve 1mhz-50 and 1khz-800khz low freqvency...

Is it possible to spot signals from distance despite the low freqvencies?
by Eagle72
Thu Jan 10, 2019 2:32 pm
Forum: Other SDR Devices
Topic: Nonlinear junction detector
Replies: 4
Views: 14522

Nonlinear junction detector

Hi. Have 2 questions hope anyone can answer. 1. Im wondering if anyone know if its possible to build NLJD by using hackrf , what i know so far is it uses harmonic radar to detect electronics by transmitting highpower uhf 1-3.6 GHZ to specific nearfiled area... Since hackrf can transmitt up to 6ghz i...