Portsdown 4 Major Update

[G8GKQ]

I have just released a major update (202404271) to the Portsdown 4. The update covers 2 major feature areas, the use of the Pluto SDR and HDMI display functionality.

• A second version of the Noise Figure Meter has been added that uses the Pluto SDR, rather than the LimeSDR. Thus both Pluto and LimeSDR users can measure receiver and preamp noise figure if they build the Noise Source PSU and have a suitable noise source. Full details here: https://wiki.batc.org.uk/Portsdown_NF_Meter
• A second version of the Noise Meter has been added that uses the Pluto SDR, rather than the LimeSDR. Thus both Pluto and LimeSDR users can measure sun noise (for ISS HamTv dish alignment and testing) and use the other Noise Meter functions . Full details here: https://wiki.batc.org.uk/Portsdown_Noise_Meter
• The Test equipment menu has been rearranged to accomodate these functions and most of the test equipment apps return to the test equipment menu after use, rather than Menu 1.
• It is possible to set the Portsdown to boot directly to the test equipment menu (Menu 3, System Config, Start-up App); options are also available to boot directly to transmit or receive.
• As an experimental capability, the Ryde receiver software can be loaded alongside the the Portsdown sofwtare. Install it from Menu 2, File Menu, and then run it directly from Menu 2. For best results an IR remote control or QuickTune should be used to control the receiver. It is also possible to boot directly to the Ryde receiver. More details here https://wiki.batc.org.uk/Using_the_Ryde ... _Portsdown
• Contest numbers and Test Cards (rather than the buttons) are now displayed on the web view when transmit is selected as requested by PA3AOD.

Please provide feedback (positive or negative) on the new features here.

Dave, G8GKQ

[g6hfs]

Hi Dave,

Like the new boot into mode, and the Ryde install is good for me as the portsdown is normally on 24/7

Brian

[PA3AOD]

Hi Dave,

Thanks for displaying the contest nr. / testcard in de update it works as expected, great.

73,
Bert PA3AOD

[g4saq]

Dave - very many thanks for producing a Pluto version of the NF meter. (I was hoping it might emerge from your shack at some point!) I'm away at the moment but I will report back once I have been able to try it.
73, Russ.

[g8lce]

I have two Portsdown 4s and a Minitiouner and Picotuner. One of the Portsdown 4s hangs when receiving from the Minitiouner after several seconds when there is no signal but seems OK when there is a signal. When connected to a Picotuner it works OK. When I cross the two over both Portsdown 4s work OK. I have checked the memory size etc. and both Portsdowns are 4Gb and latest software. The working Portsdown is actually running hotter than the problem one (different case). So something is wrong somewhere! I have run these for long periods but the fault condition is always when the Portsdown and Minitiouner combination is just one of the Portsdowns.
I will try a third Portsdown 4 to see if that will show any difference....

Martin G8LCE