SDRplay Community Forum

It is a nice weekend thank you, trust yours has been too. White frost in the mornings with perfectly still sunny days and the brightest blue sky. Happy solstice :-) Your double spacing lesson was not lost Gianfranco, I need to firm on a few other things first. I'd also like to try to do away with PV...

Hi Paul and hi Bas. Apologies to you both as I didn't see the reply and question. Paul, the triangle shape is very forgiving, building your triangle for the largest enclosed space is the best way to think about it but you would have to do horrible things to it to make much noticeable difference. If ...

Wow indeed, you got that right Paul! Nicely wound Gianfranco, a very clever coil it is ... instead of you feeding it, it feeds you :-) A very pleasant scene indeed, good on you for posting it. There is no way I can compete! -- Here is my version 3, working really nicely. 7.0386 is the 40m WSPR frequ...

Version 2 works well, as you can see with beehive trimmers. They used to be so common, looking on eBay it seems they're made of unobtainium. Yesterday's reference to eBay was in regard to some pistons priced at over $400 each. Testing version 2 for insertion loss was easy using WSPR. Looking at some...

Hello again Gianfranco! Agreed wholeheartedly about spending on computer hardware I can't justify it for a hobby, you were most fortunate with your purchase. I'll muddle through until I find something though I'll have to find another rig from the "not so old" collection to do 30m to free up the Win1...

Thank you Gianfranco for everything, I'm frustrated I can't test things for myself with the lack of computer so I've rather pushed you. I went to buy a new Windows laptop yesterday at the June stocktake sales and ogled a vast smorgasbord of the latest shiny offerings and walked away empty handed. Co...

Hi Gianfranco, Yes, there are so many varying needs and varying antennas, looking through these threads, which shows an active and healthy community, which is great! One of the things you have done that plays (pun intended) so well into the above situation was to demonstrate the sliding coupling. By...

Hi Gianfranco, sounds like the Pandora box of filters is open! My own needs are well satisfied with a sharper filter despite it's loss. One of the reasons for that is the difference in our antennas and another is the difference in what we each are trying to listen to. Your antenna is directional and...

Hi Gianfranco. Have you given any thought to how SDRuno's calculation of SNR might be influenced by a narrow preselector? If SDRuno calculates SNR as a ratio of wanted signal to passband power, if the SNR algorithm relies on samples or averages of spectrum power in the current bandwidth and assumes ...

Nice pics again Gianfranco. Looking at them shows another potential benefit of this preselector, the out of band attenuation is so good it would go a long way to protecting an RSP's front end from "other band" transmissions. Annoying for you that the stormy weather got in the way, best hopes the rel...