Time for me to enjoy the RSPduo dual channel receiver, especially with wideband loop antennas and diversity reception here in western Canada. Let my journey begin! Read more
Check our the new ARRL membership value proposition. You can get their four leading magazines for the price of one! Well done. Read more
Today is World Amateur Radio Day. Not a big deal, but you should do something to celebrate. Read more
Recently, several “real world” situations have caused the automatic program and propagation update features in Ergo to break. These issues have been resolved as follows.
Program Update is accomplished using ERGO4UPDATE.EXE. File versions older than 18.104.22.168 no longer work because my web host now uses a more secure FTP port instead of port 21. This has been resolved with file version 22.214.171.124 as of November 22, 2018. You have two choices to fix this situation.
- Reinstall Ergo using the latest ergo4.zip file (also called demo program.) Make sure to retain your registration key file for the new installation. OR
- Download the replacement ERGO4UPDATE.EXE from the Downloads page and copy it into your program folder.
Propagation Update is accomplished using ERGO4NET.EXE. File versions older than 126.96.36.199 are no longer able to download the latest information from the Space Weather Prediction Center. This is the result of the recent SWPC switch away from HTTP to secure HTTPS download requirements. This problem is resolved in the latest ERGO4NET.EXE which is available using Program Update. Unfortunately, these secure downloads require your OS to be newer than Windows XP, which is no longer supported in any event.
Both of these updated program files are now included in the installation package in ergo4.zip as of November 22, 2018.
Many listeners have wondered about the mysterious Perseus SDR Preamp that seems to do nothing much. Mystery solved. Here’s how. Read more
Although you don’t know it, most AM broadcasters rapidly adjust their power up and down to save energy costs. The technique is called Modulation Dependent Carrier Level. Read more
Why should you care about VITA 49? I may just be the next big thing in software defined radio. Here is a gentle introduction. Read more
This GNURadio SDR spatial filtering demo shows how you can eliminate local RF interference using coherent sampling on two radio channels with different antennas. Read more
A DSP Noise Canceller is easily the most useful Spatial Interference Filtering Technique for hams and shortwave listeners. Here’s how its done. Read more
This article describes the current state of hardware and software solutions for coherent SDR receivers within reach of hams and hobbyists. Take a look. Read more