SDRplay Community Forum

What you can build one day can the very next day fail. Understood and sympathies, keeping stuff like that updated is truly a Sisyphean task :-) BTW the Macintosh binary of Qqrx works straight out of the box. It's not as up to date a version as Linux but it's nice and stable and offers a real option...

I finally have working Ubuntu installation with GQRx and SDRPlay Thanks for your post, I didn't know Gqrx existed. Followed your install path without any problems but Gqrx did not list the device even though -probe ran fine, blacklist was fine, etc. Gave up and installed the generic binary as you d...

Anyone in a noisy environment interested in low noise HF antennas should surely avoid short whips and end fed wires. It's hard to imagine anything less efficient on HF than a short length vertical whip and putting a preamp on the end of one is worse. There are great solutions that cost almost nothin...

D1-D4 = > 1N4148 Hi Djani, I use the same diodes and this whole protection issue has bothered me for years. I'm guessing your use of series diodes raises the issue of the effects of clipping where a single diode is used and the received signal is strong enough to be desirable but not so strong as t...

Its antenna gain is 3 dBi and the receiver antenna gain is 3 dBi as well. If you reduce the problem to it's simplest form, ie. how much power is being transferred from one antenna to another and leaving aside all other considerations, are you taking into account the real-world antenna pattern/s? --...

If 7 volts is applied to the input (+27 dBm) the bulb will have 6 volts across it and be lit with an on resistance of 40 ohms. Why would there be just 7 volts at the input? Why wouldn't 7,000 volts be any more likely or unlikely? If we accept that the resistance is 40 ohms at 150ms what would it be...

The filament bulb is there to act as a fuse to protect the diodes if the RF level is too high. Hi Roger, I appreciate that is the intention and I won't comment further because we're straying from the SDRPlay sandpit. I wouldn't have commented at all except for my own concern that people might embra...

Sadly, filament globes take ages to achieve maximum resistance and even when they do the resistance value is not even a tiny speed bump from the point of view of the value and time of fast rising voltages as per not so close lightning or PTT keying of transceivers into nearby antennas. https://www.p...

I was wondering if anyone has tried running the PC software on their Mac OSX running the Program called CrossOver Hi Greg, you could try CrossOver for free and let us all know ;-) https://www.codeweavers.com/products/crossover-mac/download As someYguy says some of us use a Windows virtual machine w...

Congratulations on your innovation and thanks very much for your efforts and in sharing, it's interesting and appreciated. Very nice SWR figures too :) I might whip one up using stiff bronze fly-screen material with some sort of simple frame to assist with the radials and have a play. Regards Phil V...