Software Defined Radios

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Using a PlutoSDR to compare FreeDV Digital Voice with other Modes

Last post by Bubbathegimp « Tue Oct 08, 2019 12:29 am

by Bubbathegimp » Tue Oct 08, 2019 12:29 am

Over on YouTube user Adrian M has uploaded a video where he compares the HF amateur radio digital voice mode known as FreeDV against other common...

0 Replies

211 Views

Last post by Bubbathegimp
Tue Oct 08, 2019 12:29 am
How does Software-defined Radio (SDR) work?

Last post by IB4TL « Thu Oct 03, 2019 3:54 pm

by IB4TL » Thu Oct 03, 2019 3:54 pm

Most of us are familiar with communication devices such as AM/FM radios, Smart phones and Two-way radios. The radios within these devices are...

0 Replies

244 Views

Last post by IB4TL
Thu Oct 03, 2019 3:54 pm
What to look for when buying a Software-Defined Radio (SDR)

Last post by IB4TL « Thu Sep 26, 2019 3:28 pm

by IB4TL » Thu Sep 26, 2019 3:28 pm

At oneSDR we spend a lot of time researching, working with and thinking about Software-defined Radio. In fact collectively we’ve spent more than a...

0 Replies

251 Views

Last post by IB4TL
Thu Sep 26, 2019 3:28 pm
Electrosense: RTL-SDR Based Crowd Sourced Spectrum Monitoring with a DC to 6 GHz RTL-SDR Up/Downconverter

Last post by Bubbathegimp « Thu Sep 26, 2019 6:54 am

by Bubbathegimp » Thu Sep 26, 2019 6:54 am

Recently we came across Electrosense which is an interesting open source project that aims to deploy radio spectrum sensors worldwide in order to...

0 Replies

237 Views

Last post by Bubbathegimp
Thu Sep 26, 2019 6:54 am
Building An Open Source SDR Based Hydrogen Line Radio Telescope

Last post by Bubbathegimp « Thu Sep 26, 2019 2:20 am

by Bubbathegimp » Thu Sep 26, 2019 2:20 am

Over on Reddit we've seen a post by u/ArtichokeHeartAttack who has been working on a hydrogen line radio telescope , based on an RTL-SDR dongle and...

0 Replies

228 Views

Last post by Bubbathegimp
Thu Sep 26, 2019 2:20 am
Leif Continues his Comparisons of the Airspy HF+ Discovery, RSP1, Perseus and More SDRs

Last post by Bubbathegimp « Wed Sep 25, 2019 5:58 am

by Bubbathegimp » Wed Sep 25, 2019 5:58 am

Leif (SM5BSZ) is fairly well known in the SDR community for doing very indepth technical tests of various SDR receivers over on his YouTube channel....

0 Replies

227 Views

Last post by Bubbathegimp
Wed Sep 25, 2019 5:58 am
The Best Software-Defined Radios (SDRs) for 2020

Last post by IB4TL « Tue Sep 24, 2019 12:54 pm

by IB4TL » Tue Sep 24, 2019 12:54 pm

Source:

0 Replies

256 Views

Last post by IB4TL
Tue Sep 24, 2019 12:54 pm
The Best Software-Defined Radio (SDR) for Education

Last post by IB4TL « Tue Sep 24, 2019 12:53 pm

by IB4TL » Tue Sep 24, 2019 12:53 pm

Education and in particular in the area of Wireless Communication Systems is one of the main applications for SDR. We spent over 100 hours both...

0 Replies

264 Views

Last post by IB4TL
Tue Sep 24, 2019 12:53 pm
Analog-to-Digital Converters in Software-Defined Radio (SDR)

Last post by IB4TL « Tue Sep 24, 2019 12:35 pm

by IB4TL » Tue Sep 24, 2019 12:35 pm

An Analog-to-Digital converter (ADC) is a device that converts an Analog signal to its Digital equivalent. The ADC is the bridge between the analog...

0 Replies

251 Views

Last post by IB4TL
Tue Sep 24, 2019 12:35 pm
PREORDER SALE: Active L-Band 1525-1637 Inmarsat to Iridium Patch Antenna Set For $34.95

Last post by Bubbathegimp « Sun Sep 22, 2019 11:57 pm

by Bubbathegimp » Sun Sep 22, 2019 11:57 pm

Over the last several months we've been working on a versatile active L-band patch antenna that can cover Inmarsat to Iridium satellite frequencies....

0 Replies

264 Views

Last post by Bubbathegimp
Sun Sep 22, 2019 11:57 pm
Monitoring 3D Printer Filament Moisture with an RTL-SDR and rtl_433

Last post by Bubbathegimp « Sun Sep 22, 2019 10:49 pm

by Bubbathegimp » Sun Sep 22, 2019 10:49 pm

Over on Hackaday we've seen a post about Scott M. Baker's 3D printer filament drying farm that is monitored by a 433 MHz ISM band sensor and an...

0 Replies

238 Views

Last post by Bubbathegimp
Sun Sep 22, 2019 10:49 pm
Vancouver Broadcasts Hospital Patient Data Over Unencrypted Wireless Pagers

Last post by Bubbathegimp « Sun Sep 22, 2019 2:30 am

by Bubbathegimp » Sun Sep 22, 2019 2:30 am

Canadian based researchers from the Open Privacy Research Society recently rang the alarm on Vancouver based hospitals who have been broadcasting...

0 Replies

235 Views

Last post by Bubbathegimp
Sun Sep 22, 2019 2:30 am
Decoding the ARES Train Protocol with an RTL-SDR

Last post by Bubbathegimp « Fri Sep 20, 2019 10:16 pm

by Bubbathegimp » Fri Sep 20, 2019 10:16 pm

Over on YouTube user JellyImages has uploaded a video demonstrating his Windows based ARESrcvr software. ARES is a railway control communications...

0 Replies

303 Views

Last post by Bubbathegimp
Fri Sep 20, 2019 10:16 pm
Exploring the Limits of General Purpose SDR Devices

Last post by Bubbathegimp « Fri Sep 20, 2019 2:24 am

by Bubbathegimp » Fri Sep 20, 2019 2:24 am

Back in August 2019 the Chaos Communication Camp was held in Germany. This is a 5 day conference that covers a variety of hacker topics, sometimes...

0 Replies

207 Views

Last post by Bubbathegimp
Fri Sep 20, 2019 2:24 am
YouTube Video: Reverse Engineering with SDR

Last post by Bubbathegimp « Fri Sep 20, 2019 2:11 am

by Bubbathegimp » Fri Sep 20, 2019 2:11 am

Over on YouTube Black Hills Information Security (aka Paul Clark) has uploaded a one hour long presentation that shows how to use a software...

0 Replies

255 Views

Last post by Bubbathegimp
Fri Sep 20, 2019 2:11 am
NanoVNASaver Software Walkthrough + NanoVNA Firmware Updates Bring 1.5 GHz Max Range

Last post by Bubbathegimp « Fri Sep 20, 2019 1:41 am

by Bubbathegimp » Fri Sep 20, 2019 1:41 am

The NanoVNA is an open source VNA project by @edy555 and ttrftech that has recently become extremely affordable at less than US$50 for a fully...

0 Replies

267 Views

Last post by Bubbathegimp
Fri Sep 20, 2019 1:41 am
Reviews of the Low Cost MLA-30 Wide Band HF Magnetic Loop Antenna

Last post by Bubbathegimp « Thu Sep 19, 2019 6:33 am

by Bubbathegimp » Thu Sep 19, 2019 6:33 am

Recently Chinese manufacturers have begun producing a low cost wide band (100 kHz - 30 MHz) magnetic loop HF antenna known as the MLA-30. The loop...

0 Replies

272 Views

Last post by Bubbathegimp
Thu Sep 19, 2019 6:33 am
TV Scrambling With GNU Radio and a FL2K Adapter

Last post by Bubbathegimp « Thu Sep 19, 2019 4:14 am

by Bubbathegimp » Thu Sep 19, 2019 4:14 am

[ mrgriscomredux ] over on [ Reddit ] was interested in re-creating the nostalgia that was scrambled analog television from the 90s. To do this he...

0 Replies

252 Views

Last post by Bubbathegimp
Thu Sep 19, 2019 4:14 am
SDRSharp Community Plugin Package Now Available

Last post by Bubbathegimp « Wed Sep 18, 2019 7:37 am

by Bubbathegimp » Wed Sep 18, 2019 7:37 am

The SDR# developer in conjunction with Rodrigo Pérez have recently endorsed and released a community plugin package over on the SDR# downloads page...

0 Replies

281 Views

Last post by Bubbathegimp
Wed Sep 18, 2019 7:37 am
WWV and WWVH Special Messages to Broadcast!

Last post by Bubbathegimp « Wed Sep 18, 2019 6:18 am

by Bubbathegimp » Wed Sep 18, 2019 6:18 am

Starting from Monday September 16th and continuing through to October 1st, both WWV and WWVH shortwave time signal transmission stations will...

0 Replies

232 Views

Last post by Bubbathegimp
Wed Sep 18, 2019 6:18 am
Testing Version Two of the NooElec Balun One Nine

Last post by Bubbathegimp « Wed Sep 18, 2019 12:30 am

by Bubbathegimp » Wed Sep 18, 2019 12:30 am

Over on YouTube two reviewers have just uploaded videos showing off version two of the NooElec Balun One Nine. Version one of the Balun One Nine is a...

0 Replies

259 Views

Last post by Bubbathegimp
Wed Sep 18, 2019 12:30 am
Testing a PCB Patch Antenna and Radiosonde QFH Antenna for Inmarsat and Iridium Reception

Last post by Bubbathegimp « Tue Sep 17, 2019 2:34 am

by Bubbathegimp » Tue Sep 17, 2019 2:34 am

Over on his YouTube channel Tech Minds has been testing some antennas for Inmarsat and Iridium L-Band satellite reception. Inmarsat is a satellite...

0 Replies

286 Views

Last post by Bubbathegimp
Tue Sep 17, 2019 2:34 am
A Wall Mounted SatNOGS Ground Station Monitor

Last post by Bubbathegimp « Tue Sep 17, 2019 2:00 am

by Bubbathegimp » Tue Sep 17, 2019 2:00 am

If you weren't already aware, SatNOGS is an open source project that aims to make it easy for volunteers to build and run RF ground stations...

0 Replies

256 Views

Last post by Bubbathegimp
Tue Sep 17, 2019 2:00 am
A Guide to Compiling Updated NanoVNA Firmware

Last post by Bubbathegimp « Tue Sep 17, 2019 12:13 am

by Bubbathegimp » Tue Sep 17, 2019 12:13 am

Thank you to Ohan Smit (ZS1SCI) for submitting his guide that shows us how to compile the latest NanoVNA firmware from the source code . The NanoVNA...

0 Replies

284 Views

Last post by Bubbathegimp
Tue Sep 17, 2019 12:13 am
Significantly Improving RTL_TCP’s Performance with Ring Buffers

Last post by Bubbathegimp « Mon Sep 16, 2019 11:48 pm

by Bubbathegimp » Mon Sep 16, 2019 11:48 pm

Thank you to an anonymous contributor for bringing to attention a two part blog post by Stephen Blinick. Stephen's post details how the performance...

0 Replies

270 Views

Last post by Bubbathegimp
Mon Sep 16, 2019 11:48 pm

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