SDRplay Community Forum

Thanks for going to the trouble to post this Noel, it's all very useful info. Just one point - in a superhet with a 455 KHz IF, the image frequency will be at TWICE 455 KHz above the receiving frequency. This is because the local oscillator will be running at Fsignal + IF and the image response will...

Hi Paul, it's Andy again. I bet you think I'm stalking you! I honestly cannot think of any reason why you should be seeing such poor reception on the Hi-z input from your active antennas, unless you are making a mistake with the connections. The output from the antennas DC power injector box should ...

Hello Henry and welcome to the forum. You'll need a standard USB-A to USB-B lead for the connection from the RSP to your PC and some kind of adapter or adapter lead with an SMA male plug on one end to a female connector which matches your own antenna connector. That's it. It's worthwhile reading all...

Although I can't really answer your question, I suspect some of these 'odd effects' that people see are down to perception. Bursts of noise, a strong signal appearing or disappearing etc will affect the AGC and cause the visible spectrum to jump up & down. In Ye Olde Days, we did not have any way of...

I have the RSP2 and find the selectable antenna ports a real boon. The single input of the RSP1a means you'll need to plug/unplug all the time or get an antenna switch. The chipset in both units is the same, the only difference in technology between them is that the RSP1a has access to an extra coup...

It's best to follow the 'Start here' procedure on the site. Remember not to plug in the USB connection until prompted to do so. All the necessary files will be downloaded & installed in the process, no need to download or install anything else. There should be no need to set up any COM port for stan...

This is probably due to a strong signal (not necessarily showing in the displayed b/w) coming on and off and causing the AGC to act. It may help to read the following document:

https://www.sdrplay.com/wp-content/uplo ... SDRuno.pdf

If it's an SSB signal, that's normal. With SSB, there is a signal present only when there is speech.

Yup. The S meter is calibrated to the IARU standards for HF and VHF in both dBm and s units. There is no adjustment.

For auto cal, just follow the procedure as shown in the manual. But remember to do it AWAY from the central spike, and to use a known-accurate, steady cal signal.