Waterfall Bandwidth

Forum for discussion about the Langstone Microwave Transceiver that shares some features with the Portsdown. Wiki: https://wiki.microwavers.org.uk/Langstone_Project
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on5gs
Posts: 6
Joined: Tue Nov 26, 2019 10:58 pm

Re: Portsdown 4 - New Update 202008050

Post by on5gs » Sat Aug 15, 2020 11:01 am

Thanks for the very nice project! The portsdown4 is much more improved!
I really like the new "langstone" and the RX with the minitioune runs superb and fast!

here is reception of my EME echoes on 1296MHz using the portsdown as a receiver
https://www.youtube.com/watch?v=PETunkBDKIc

Can it be done to set the waterfall bandwith (to see 100KHz spectrum example)?
Or adjustable filter for the RX?

73 ON5GS Dirk

g4eml
Posts: 752
Joined: Thu Apr 26, 2018 9:36 am

Re: Portsdown 4 - New Update 202008050

Post by g4eml » Sat Aug 15, 2020 11:46 am

The waterfall width on Langstone is linked to the internal sampling rates so it can not be changed easily. Increasing the width causes more load on the Pi, which is already working hard.

RX filter settings will be made adjustable in a future release.

Langstone is really a separate project to Portsdown so to keep the forum tidy please raise future Langstone comments and questions in a separate thread.

Colin G4EML.

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