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Hi I thought I would post a screen-grab of the G8JCFSDR running with 192 KHz sampling rate. I am using an ASUS XONAR U7. You can see that the U7's bandwidth is pretty flat upto about 48KHz and then starts to drop away, or of course it could be low pass filtering on the output of the Elektor SDR Shield - I will have to crank up some of my other SDRs and see what they look like at 192KHz sampling. I normally operate the G8JCFSDR at 96000 KHz because with my old eyes, the click to tune feature is a bit fiddly at 192KHz sampling rate, one can of course change the "sweep" to reduce the Hz/div. Wishing you all a great weekend. 73 Peter - GM8JCF

Hi all, I'm facing some massive problems with the Elektor SDR Shield 2. Let me try to explain this in a chronological order: 1.) Installation of b828 went fine. 2.) During the first start (with elevation) the program complained about not being able to open COM1. That's ok as the Arduino is on COM5. 3.) In the Config I've change the port to COM5 (left all other parameters untouched) and closed the software. I tried to restart and was told another instance is already runnning - correct, I can see the instance. It was active with 1...2% of CPU load but no disk activity. After a couple of minutes I've killed it from the taskmanager. Next start the program was again complaining about COM1 (instead of COM5) and all settings (including the SDR setting) were lost. I've entered a quite painful and time costly loop before I realized that I have to wait roughly 12min before the program finally shut down (and writing the setting to disk) after the window disappeared from screen. *Q1:* Is that normal or the intended behaviour? 4.) During my loop in (3) the Elektor SDR was not detected although the UNO is brandnew and empty. I decided to "xload" the software, which apparently worked. If I open a putty terminal with 115200 baud on COM5 a short message is written. However I can't enter anything - or there's no echo from the Arduino. *Q2:* Is my assumption correct that the Arduino is working correctly without echo and hence no "offline" way (with a terminal) to check the communication? 5.) Although I was able to change the settings for the serial port to be used a connection can not be established. Two popup windows appear on start (with elevation): clsDDSSeriallF.OpenCom: PollMode : Unable to Open COM5 and modSetupRx.initialiseRX @ Line=0 Error Portt COM5 Error Code=0 Error Desc= Port settings and SDRModel are remembered correctly, it seems however the Elektor Shield is not detected (Calibration should reflect this). And that's my final question Q3: What am I doing wrong? Just in the case it might matter: My windows is a 20H2, 19042.1110 Thanks Dirk

hello i would like to hear a channel. unfortunately I only hear noise. I have a 3 m wire attached to the antenna. from start to end of its range not a channel. what am I doing wrong? i am a newbee looked up channels on the internet. frequency set. no result are there examples of channels that I can import? even if I only have one. then I can see what I'm doing wrong. a better antenna maybe? where can I order it ? lI'm not that good at making. hopefully not too many questions??? regards, hans

hello, i have now as new user the shield sdr.(170515-1 V2.0) what i do worng.? i use a Arduino UNO R3 board. normaly i work on Com5. Com1 is my mouse. i have installed the software of the Shield(version 282) when starts the program i get the error: unable to open com1. error code 0. bottem part of the graphics is missing. i can not set the comport to 5. what i do wrong? i work in Windows 10. what i must do for working this shield? regards, t&t Hans

Hello, since the installation of the G8JCFSDR (Build 282) on Windows 10 Professional, I have a problem to save the presets. No matter if I start the software as a regular user or as an administrator, the G8JCFSDR will not save the frequencies or other settings of a preset. I can change the frequencies and other settings, but after closing and opening G8JCFSDR again the old frequencies and settigs are still there. The only thing what is being saved is the description. Where does G8JCFSDR save the presets? Is it a simple text file in some particular folder? Maybe it is possible to change those settings by editig such a file manually. Best Regards Ronald

Hi. Is there any way to receive AM stereo stations in medium wave frequencies with G8JCFSDR software? Ciao, Massimo

I am grateful to you for guiding me to understand this new world. In the end, I think I understand. I need an Elektor module and an Arduino module. By superimposing one another, from Pc I can control the receiver in all its functions. Right? And the firmware will upgrade itself, using G8JCFSDR SW. Does it make a difference if I buy an original or non-original arduino module? I know that the original Arduino is an Italian product but, if I can save money, I'm sorry but happy! :-) 73' IK5FEV Massimo

Hi all, I recently bought a new SDR Hands-on Kit from Elektor, but it doesn't appear to be acting normally. Below is a summary of what I've done and am seeing. If anyone has suggestions on further troubleshooting, I'd be very grateful. I have an oscilloscope if that would be helpful. Thanks much, Frank -- Soldered the four pin-headers to the SDR shield's board, installed an antenna connector, mounted the SDR shield atop my Arduino Uno board, connected to Windows 10 PC via USB. Attached an antenna (known to work well with another SDR). Used a stereo audio cable to connect the SDR shield's output to my PC's soundcard input. -- Downloaded G8JCFSDR Build 282, installed it on the PC. Configured it to run as Administrator. Configured for the COM port, SDRModel = ElektorSDRShield, selected soundcard's in and out as per my PC. Entered other settings on the G8JCFSDR top panel per the manual. -- When I first launched the program, it advised me that the Uno firmware must be updated. It performed an update to v1.3 with no errors. -- After rebooting my PC, I launched the program and clicked to set Power = On. At this point, there is no visible activity on the top panel, and no sound from the PC's speakers. I tried tuning to known active frequencies (10 MHz for WWV, 7.074 MHz for 40-meter FT8), with no change. -- To verify that the Windows sound system is set correctly, I closed the G8JCFSDR program and launched the audio app Audacity. With the SDR shield connected, Audacity shows a low level of noise at the soundcard input. If I connect/disconnect the antenna from the SDR shield, there is a momentary jump in noise. However, there is no perceivable modulation, just a low level of random noise. -- A multimeter shows that +3.3v, +5v and gnd are reaching the SDR shield.