Blog

Amateur Radio Projects and Software Defined Radio

The Three Best Low Cost SDR Radios You Can Buy Today

If you are thinking about getting involved with SDR radio or just want to add a new one to you shack, here are what we consider the three best values in SDR radio equipment available today. The operative word here is “low cost”. These SDRs are not necessarily the best you can buy, but offer a lot of value for your money and make a good entry point into the world of Software Defined Radio.…

Ham Radio Deluxe Now Supports Alinco DX-SR9

The latest version of Ham Radio Deluxe as added CAT support for the DX-SR9 as well as the DX-SR8. This will allow HRD to control such things as tuning, transmit, power settings, mode, and other supported features of the Alinco radios. The Alinco transceivers have a much smaller command set available for computer control, but ┬áHRD appears to pretty much support all of them. If you are not familiar with Ham Radio Deluxe, the software covers a wide range of applications from logging and transceiver control to digital operations. HRD can be pretty much a complete software solution for the needs of a the amateur radio operator.…

NooElec Aluminum Extruded Case for the Ham It Up HF Converter

Overview

Looking for a place to put your Ham It Up Converter? NewElec is now selling a very nice aluminum extruded case to fit the Ham It Up HF converter. As was discussed in an earlier article on HRS, a RTL2832U Dongle and the Ham It Up converter make a killer combo for a VHF,UHF, and HF SDR receiver with a very respectable bandwidth for less than $100. The new enclosures from NooElec will give you a good looking home for your Ham It Up converter and are available in blue or silver. The blue case uses laser etched labeling while the silver case uses silk screen labeling. The blue case looks very nice, but the silver case’s labeling stands out a little better. However, you can’t go wrong with either color. The cases also provide additional RF shielding for your Ham It Up converter. The case kit comes with the aluminum case with a cut out for the USB port, two pre-cut aluminum end pieces with cut outs for the by-pass switch and rf jacks, and a pack of small screws with two standoffs. The enclosures looks terrific and provides additional protection for your Ham It HF Converter.…

Alinco DX-SR9 Hybrid SDR Transceiver Review

Introduction
If Alinco’s DX-R8 ┬áreceiver and the DX-SR8 had a child, it would be the DX-SR9. The DX-SR9 inherits the brains of the DX-R8 and the brawn of the DX-SR8 to create the DX-SR9 hybrid amateur radio transceiver. Hybrid SDRs are generally a standard radio receiver with buttons and knobs that feature an IQ output to allow its use with SDR software programs. This gives you the best of best worlds. You get a radio with standard buttons and knobs that you can quickly use when you don’t feel like firing up the shack computer for SDR. The Hybrid SDR also allows you to use it in situations where you would like to not have to fool with the computer like in the field or mobile. Unlike the black box SDR radios, you are not always tied to a computer for operation. The Hybrids also offer a more friendly introduction to SDR for new users. They can plug the rig in and use it immediately and come to grips with the SDR part later. When SDR software is added, then the radio gains some of the features of far more expensive radios such as panoramic displays and additional filtering. What’s …

New Forum for Ham Radio Science

As of today, HRS has decommissioned the old forum. We were just getting too many spammers. The new forum will allow us a better opportunity to help reduce some of the spam. Unfortunately, we were not able to move the user database or the old posts to the new forum. If you were a member of the old forum, you will need to sign up again. The old forum will be available for a little while longer, but we will eventually remove it. Let me encourage you to try to post your comments and questions in the forum. I have noticed that the comment sections of some of the articles are getting a little unwieldy. You will probably stand a better chance of getting an answer to your questions, if you post them in the forum.

Thanks for your patience!

Editor…

GNU Radio The Easy Way

Ready to take your RTL Dongle to the next level or learn more about how Software Defined Radio works? Try GNU Radio. GNU Radio opens up a whole new world of experiments you can do with SDR radio. GNU Radio also allows you learn more about how SDR radio works. Once you get your head around it, you can start building your own custom SDR radio applications. One of the show stoppers for a lot of people who would like to get involved with GNU radio is the requirement to install Linux on your PC. Then you have to download and build GNU Radio. This certainly can be daunting for those who are new to the Linux operating system. Well, you don’t really have to go through this anymore to experiment with GNU Radio thanks to Kali Linux.…

Afedri SDR-Net 2.3a Review

Introduction
Ham Radio Science occasionally get emails from our readers on suggestions for a good reasonably priced HF SDR radio that won’t break the bank. So, we spent a little time investigating what was available in the under $300 price range. Frankly, there is not much to be found with the exception of a few kits. The kits are great learning tools, but some of our readers may not prefer trying to build a kit that includes tiny sma parts. Also the kits and some of the less expensive SDR radios are still sound card based and we were really looking for a direct sampling receiver. The $249 Afedri SDR-Net HF SDR met our requirements and more. The Afedri Net-SDR allows for connection to your pc via an USB interface and what truly puts the Afedri SDR-Net in a class of its own is the ability to connect via TCP (Lan connection). After looking into the very positive comments on the internet regarding the Afedri SDR-Net, we thought it would be well worth investigating this amazing little budget HF SDR receiver. The Afedri SDR-Net is made by Alexander Trushkin 4Z5LV and is available in a case for $249 or as …