SDRplay Community Forum

https://www.sdrplay.com/community/viewtopic.php?f=12&t=4341 Using a Mega2560 board is like using a sledgehammer to crack a nut - a small Nano board is all that's required. Use one of the blue AD9850 or AD9851 boards you can find on ebay or wherever, and hope that you get a good one. There are no bui...

There is no "Sync" pin on AD9850 or 9851 boards, but Trackgen still works fine with them, just as in 0.9a. At a guess, I'd say that Steve has been experimenting with other possible sig gen boards, and the mysterious "S" pin is just a left over from that. It may have a use in the future, but only tim...

I've been looking a bit more at the problem, and it's not as straightforward as it first looked, eg starting at 50MHz centre frequency: At 50Mhz, max span is 20MHz (stops after 1 sweep at 50MHz). At 51MHz, max span is 10MHz (stops after 1 sweep at 20MHz). At 55MHz, max span is 10MHz (stops after 1 ...

I've got the same experience, but it appears to be linked to the centre frequency chosen for the scan: Thanks for those figures. I'll have a look and see if I can reproduce the problem here. Hi Steve, I've been looking a bit more at the problem, and it's not as straightforward as it first looked, e...

I am running into one issue if I use 20 MHz and above it will only run the capture partial of the band width. Each time I click on the band with it will start again but only get a partial or sometimes you can see it do a scan 1.5 times and stop. I am guessing I am missing a simple setting. Any idea...

Great news, Steve! Many thanks again for all the work you've put in over the last few months.

Regards,
Dave

HI any update on the release of the software as its gone past the end of feb ? Just keen to get to try it . Thanks G8HAM Read the previous two messsages and look at the dates on them. I think the short answer is, "it will be ready when it's ready." We're all keen to play with the new version, but c...

Hi Steve - just curious as to how you're getting on with the new version. Any chance of a quick update?

Regards,
Dave

Hi Steve, Just changing the clock chip didn't do a lot initially, as I still had no control over the output frequency (and the waveforms suddenly became a lot like those from my blue board). When I checked the board more closely I found that pins D0 - D7 were just connected directly to the AD9851, a...

I got my second AD9851 module (the green one) working today! I fitted a 30MHz 25ppm clock chip in place of the 125MHz one it came with (probably 50ppm), and did the D0+D1 and D2 mods to force it into serial mode, and it now works far better than I ever hoped. It's probably down to the board being la...