MFJ-1046 looks a similar design - a series tuned circuit with matching transformers at the input and output. It looks a lot larger than the CCW product though. 73 Nick

HDR is a great program once you find your way around it. If you're using it with different pieces of hardware then you can configure your shortcuts to start it with the profiles option and it will sav

Thanks Chris. Soldered up and now performing solidly! 73 Nick

Hi Chris, Just got around to setting up my LA+ received in May and it works intermittently. I think I've traced it to a 22R resistor on the USB power board which looks as it it has avoided the solderi

OK, I think I've solved my own problem so hopefully this may help others. I downloaded and installed the lastest CFGSDR from https://pe0fko.nl/CFGSR/ I then looked at the date of ExtIO_Si570.dll that

Hi, I've just started HDSDR (first time in a while) with SDR4+ running via the extio.dll and I've getting prompted to update the Si570 driver which sends me to https://pe0fko.nl/CFGSR/ . Just to confi

Hi Chris, Please could you update us on the Sentinel 4 production and expected dispatch? Have sent you a direct email concerning my order placed on 10th May but cannot trace a reply. Many thanks, Nick

Pat, I use Linux too. Do you have a SDR4+ running on Linux, if so could you share what SDR software and configuration you used? Thanks, Nick.

Thanks Chris, that's exactly what the problem was. I checked the Options -> Select Input -> Open Input Mixer and there it was! Is there a preferred way to set the microphone level? I'm getting what ap

I've just moved my SDR4+ to a Windows 10 laptop with a later version of HDSDR and the setup seems to be different to the one Chris documented for Windows 7. Is anyone else using a similar setup succes

Depending on what CPU your Chromebook has it may be possible to install Ubuntu Linux using Crouton. That would allow you to install any software that's in the Ubuntu repositories. You'll find plenty o

I briefly looked into decoding and encoding with FLdigi. What we need it details of the checksum calculation that is appended to the packets an used for validation when decoding. Personally I think tr

#raspberrypi #pi #linux

Thanks Chris, I'll get it shipped back to you. s/n 0225 so that should tell you all you need to know about what's inside. Regards, Nick.

Hi, I've been attempting to use my SDR-4+ around 12MHz this evening and I seem to be plagued by noise spurs. I'm using the internal sound card so 2 USB cables connected to the shack computer. Possible

Mike, for that frequency and appication you would be better using a 3-elementYagi antenna. It's a narrow-band so that would help to protect your receiver from out of band signals. It's probably close

I've downloaded and installed on several other XP machines via a clean memory stick. The only issue I had was with one running Virtual Box 4.3, the VM failed to load after the re-boot.

I'm not familiar with the project Chris - it it just 1200 baud vhf or are there options for HF modes as with APRS messenger? Regards, Nick

It looks like an improvement on Yahoo Groups. 73 Nick.