Simon's World Map v1.1
Simon Brown • July 29, 2021
Introduction
I need a simple display which shows me at the very least:
- Current Time
- Sunrise / Sunset
- Greyline map
- DX stations
There are commercial geo clock solutions such as Geochron, but as a programmer with spare 4k monitors and computers I decided to write my own, that way I have exactly what I want.
Updates
Kit updated July 29th, 2021 to fix CPU usage problems.
What's New

A few days spent on this program in July 2021:
- Added the Explorer map - thanks to Nasa,
- Map can be dragged and zoomed with the mouse,
- Reworked the ribbon bar.
So it's time to call it v1.1.
The downloads will be hosted from sdr-radio.com later this year, for now you download from the author's own website.

SDR Television Found and fixed an unused massive memory allocation (up to 10GB), may have caused systems to freeze. Fixed fatal bug in matched filter array allocation. Changed the default transmit bandpass shaping filter roll-off to 0.20 in transmit and receive. Please look at the images below and apply the change. SDR Pluto Now show the AGC gain and RSSI. Added Default link to select the recommended gain - Fast Attack, 0dB visual. Known Problems Add support for tracking transmissions with (?) non-standard PCR data, example is G8GKQ. Using Pluto & variants, sensitivity is not as good as a NIM (hardware tuner). Will compare with SPECTRAN ECO in a week or so.

After too much grief, I've decided to stop using Wi-Fi to connect the small NUC systems in the computer room to my network: DX Cluster (Ubuntu) SDR Server (Windows) User Forums (Windows) These servers are in constant use, causing the wireless transmitter on my TP-Link AX50 to fail. By switching over to a wired network there's less demand on the wireless transmitter and the whole network has become far more reliable. In future I will only use Wi-fi when there's no alternative. I'm keeping a spare router ready just in case the AX50 fails.