SDRplay Community Forum

Hi Steve,

Many thanks for the detailed answer. Cheers, Mike.

A quick question for someone 'in the know'.... For the RSP2 (at least), is the IF amplifier with AGC implemented as an actual voltage amplifier with controllable gain? That is, is it a circuit that takes in an input signal as a voltage and makes turns it into a larger voltage? Or is it a control for...

Hi Steve, I found some more info on the peak at 103.85MHz... It is repeatable, but... If I start the analysis with averaging using the 'Start' button on the top panel then the peak is not present. However, if I cycle through the reference values while in averaging mode then after 10-20 changes in th...

Hi Steve, Yes, that particular peak at 103.85MHz @ -30dBm reference was the aspect that set me off thinking that something was wrong and some more complicated interaction was going on. In a way, I feel comforted that the peak at 103.85MHz is not expected behaviour (by you at any rate), and I will tr...

Hi Steve, here are the next three plots. The reference level is included in the filename and I have included a snapshot of the settings alongside the main plot Cheers x2, Mike.

I had attached the plots (or so `I was told...) I will try reattaching them in two submissions this time. It is not so much the noise floor that increases, but the shape of the curves as well, especially around marker 'C'. Many thanks, Mike.

Hi, Firstly congratulations on the hard work that must have gone into producing such a useful piece of software as this. This looks like it will be very useful tool for me and is much appreciated. I have come across some confusing behaviour that I thought it worth mentioning. My understanding is tha...

The 3D printer files for the frame, sidebox and both together for a single print cycle are available in a variety of formats (STL, GCODE & 3mf) at:

https://www.sdrplay.com/docs/MikeHarwoo ... rFiles.zip

Please email me at Mike@Harwood.org.uk if you need anything else.

Having got fed up with my RSP2 lying around on the desk or perched on top of a paper shredder(!), I decided to design and use my 3D printer to make a frame/box that could attach the RSP2 to the wall and out of the way. This would be close to where the RF ground enters the house and as far away from ...