Search found 19 matches

by WA4OSH
Wed Dec 04, 2019 9:51 pm
Forum: KerberosSDR
Topic: Feedback on possible KerberosSDR V2 Hardware
Replies: 32
Views: 2076

Re: Feedback on possible KerberosSDR V2 Hardware

The Rafael Micro R820T2 chip has been discontinued since march 2018. It will need a replacement.

https://www.rtl-sdr.com/r820t2-chip-dis ... -redesign/

--Konrad, WA4OSH
by WA4OSH
Wed Dec 04, 2019 9:47 pm
Forum: KerberosSDR
Topic: KerberosSDR Interface to Gnu Radio Companion (GRC)
Replies: 8
Views: 581

Re: KerberosSDR Interface to Gnu Radio Companion (GRC)

So the four Rafael Micro R820T2 (24 - 1766 MHz) RTL-SDRs are tied together with a USB Hub. So you would use four RTL-SDR source blocks? How do you select them in the source block?

--Konrad, WA4OSH
by WA4OSH
Fri Nov 29, 2019 10:12 pm
Forum: KerberosSDR
Topic: KerberosSDR & Aircraft Beacon Search
Replies: 17
Views: 2781

Re: KerberosSDR & Aircraft Beacon Search

Yes, you can do that on a car's rooftop,

KerberosSDR is on sale!
https://othernet.is/products/kerberossd ... nt-rtl-sdr

--Konrad, WA4OSH
by WA4OSH
Fri Nov 29, 2019 5:16 pm
Forum: KerberosSDR
Topic: KerberosSDR Architecture
Replies: 1
Views: 163

KerberosSDR Architecture

Is there a block diagram showing what the KerberosSDR hardware does? Is it similar to this "entry-level" coherent receiver? Their feature set is very similar.

https://coherent-receiver.com/products/ ... t-channels
by WA4OSH
Fri Nov 29, 2019 4:17 pm
Forum: KerberosSDR
Topic: KerberosSDR Interface to Gnu Radio Companion (GRC)
Replies: 8
Views: 581

Re: KerberosSDR Interface to Gnu Radio Companion (GRC)

The current Raspberry Pi and web and Android application are nice, but they lock-in the KerberosSDR into doing two things: Direction Finding and Passive Radar. There's far more that can be done with what's here, but it needs to be opened-up so that other things can be studied with it. I would actual...
by WA4OSH
Sat Nov 23, 2019 8:42 pm
Forum: KerberosSDR
Topic: KerberosSDR & Aircraft Beacon Search
Replies: 17
Views: 2781

Re: KerberosSDR & Aircraft Beacon Search

Maginux,
Another low-powered transmitter to "Fox Hunt" for is a garage door opener. These typically run in the 310-390 MHz band.

--Konrad, WA4OSH
by WA4OSH
Sat Nov 23, 2019 8:33 pm
Forum: KerberosSDR
Topic: KerberosSDR & Aircraft Beacon Search
Replies: 17
Views: 2781

Re: KerberosSDR & Aircraft Beacon Search

Maginux, If you were interested in using KerberosSDR to "fox hunt' a low-powered transmitter to simulate locating a 5 watt burst-mode 406 MHz ELT transmitter, you could experiment with fox-hunting a low-powered (10mW) 433 MHz transmitter in can be operated in many regions in the world license free. ...
by WA4OSH
Sat Nov 23, 2019 8:17 pm
Forum: KerberosSDR
Topic: KerberosSDR & Aircraft Beacon Search
Replies: 17
Views: 2781

Re: KerberosSDR & Aircraft Beacon Search

121.5 MHz ELTs were phased-out 10 years ago in February 2009. The new system is on 406 MHz. Here is an article that describes the differences. https://www.sarsat.noaa.gov/406vs121.pdf There's also a system that runs on 243 MHz, which also has been phased-out. http://www.arrl.org/news/distress-beacon...
by WA4OSH
Sat Nov 23, 2019 5:35 am
Forum: KerberosSDR
Topic: Feedback on possible KerberosSDR V2 Hardware
Replies: 32
Views: 2076

Re: Feedback on possible KerberosSDR V2 Hardware

In the initial AUGUST 14, 2018 article entitled "KERBEROSSDR PREVIEW: A 4X COHERENT RTL-SDR FOR DIRECTION FINDING, PASSIVE RADAR AND MORE" you said that "Over the last few months we've been working on a 4-input coherent RTL-SDR called 'KerberosSDR' (formerly known as HydraSDR) that is designed to be...
by WA4OSH
Fri Nov 22, 2019 7:28 pm
Forum: KerberosSDR
Topic: KerberosSDR Interface to Gnu Radio Companion (GRC)
Replies: 8
Views: 581

Re: KerberosSDR Interface to Gnu Radio Companion (GRC)

This GitHub entry Multi-RTL presents a two-channel Phase Coherent Receiver based on two RTL-SDR dongles. Multi-RTL is a GNU Radio block that transforms cheap multiple RTL-SDR receivers into multi-channel receiver. Multi-RTL is the first software solution that enables synchronous reception with each ...