Category: SDR Radio

Amateur Radio Projects and Software Defined Radio

SDRPlay RSP1A Overview and Listening Tests Video

RSP1A Overview and listening tests. Listening tests were conducted in real-time. Each radio was connected to the same antenna with a splitter. There is probably some amount of insertion loss, so your results may vary.…

New Software Support for SDRPlay RSP2

If you are the owner of the fantastic new RSP2, you now have a few more options as to what SDR software you can use it with. Besides the SDRUno software that was developed for direct support of the SDRPlay RSP series, SDR Console Version 3 developed by Simon Brown will now support the RSP2. SDR. SDR Console is very nice SDR program with a clean user interface and loaded with features. Also HDSDR now supports the RSP2. HDSDR has been around a long time and offers a simpler approach to using SDR radios. The user interface is very straightforward and friendly to beginners as well as experienced users who appreciate a fast and easy interface to a SDR radio. If you download the HDSDR software from SDRPlay’s website, it comes with the EXTIO files you need in the installer. So it’s pretty much plug and play. With a great choice of SDR packages the SDRPlay RSP series of SDR radios continue to be one of the most flexible SDR radios available today. Not to mention a great value.…

Rumlog 7300 Scope Feature Demo

If you have an Apple Mac and an Icom IC-7300, you may want to take a look at DL2RUM’s Rumlog NG software. Aside from being a very nice logging software package it offers a resize-able spectrum / waterfall scope that can fill your entire PC screen if you wish. This is a nice improvement over Icom’s RSBA-1 software that limits the display of the spectrum / waterfall when connected to an Icom IC-7300 to a fairly small area. The scope drawing performance is pretty similar to RSBA-1 due to the rather slow serial communication rate of 115200 baud. To get this working, you must download and install the Scilab VCP driver on your Mac and under Rumlog’s preference use the following settings for TX1:

Rumlog Settings







On the Icom IC-7300 got to Menu/Set/Connectors/CI-V/CI-V USB Port/ and set Unlink from [Remote]. While there set the CI-V Baud Rate to 115200. On Rumlog’s IC7300 control screen you should see a Show Scope button. If everything is working ok, you should have a the IC-7300 scope shown on your Mac’s screen. ┬áThere are several tweaks you can experiment with relating to the scope on the scope screen …

SDRPlay RSP2 First Look Video

First Look Video of the new SDRPlay RSP2. Featuring a quick overview of the new features. The RSP1 and RSP2 signal comparison was done in realtime using the same antenna attached to the RSP1 and RSP2. This means that there is some amount of small signal loss due to the splitter. The RSP2 antenna was connected to the Port A connector on the RSP2 to make the comparison as even as possible. According to SDRPlay, the RSP2 Hi Z port can perform a bit better on AM broadcast and HF bands. To make things as even as possible both the RSP1 and RSP2 were used with the default settings for each radio. Of course both the RSP1 or RSP2 can perform a bit differently depending on the tweaks you make within SDRuno. Also performance of the RSP2 may change as SDRuno is updated to better leverage the new features of the RSP2.

Anan SDR Radios Now Available from US Dealers and a New Entry Level ANAN SDR

Some good news for you that have been interested in the generally highly regarded Anan series of SDR transceivers. First off, the Anan SDRs can be currently purchased from two us dealers, Gigaparts and Cheapham. The warranty on these radios are for 2 years against manufacturing defects with a US service center in Arkansas. Also earlier in the year Anan started shipping the Anan 10E. The Anan 10E is basically and entry level version of the Anan 10. The Anan 10E is pretty much the same radio as the Anan 10 with a few compromises to cut the cost to a more attractive price point for some radio hobbyists. Here is what you loose over the Anan 10 :

Differences between the ANAN-10 & the ANAN-10E
1. The ANAN-10E uses a 14 bit ADC while the ANAN-10 uses a 16 bit ADC
2. The ANAN-10E uses an EP3C25 FPGA while the ANAN-10 uses a larger EP3C40
3. The ANAN-10E supports 2 receivers while the ANAN-10 supports 7 receivers…

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

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 …