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The software was written by Ian Renton, MØTRT with code contributions by Steven, M1SDH.
This project would not have been possible without those volunteers who have taken it upon themselves to run DX clusters, xOTA programmes, DXpedition lists, callsign lookup databases, solar conditions and propagation modelling software, and other online tools on which Spothole's data is based. The vast majority of these are not profit-seeking and are made purely for the love of the hobby and to help others in the community. Spothole is standing on the shoulders of giants, who deserve a huge amount of thanks for all the work they put in.
The following people have specifically helped develop Spothole either by contributing code, requesting features, or helping squash bugs: Steven M1SDH, Dan S50U, Matt W1CDN, Norby LX1NO, Andrew VK3ARR, Mario DL4MFM, Mark M5TEA, Michael G7VJR, Rob G7LAS, Ed DD5LP, Raph F4LUB, Luc ON7KEC, Richard GD4OFB, Daniel PY2TDB, Alan VK1AO, Andrew WK1AD, Ullrich DF5WC, Wayne N3CDF, Jonathan G4IVV, Erik N2EPE, Sorin YO9TSN, Matt HB9HWI, Priit ES1TEB, Leigh KG7WED, Jouni OH3CUF, Onno VK6FLAB, and Bruce WA7BNM. (If I've forgotten you, let me know!)
Spothole is also dependent on a number of Python libraries, such as pyhamtools, and many JavaScript libraries, as well as the Font Awesome icon set and flag icons from the Noto Color Emoji set, and MIT-licenced GeoJSON files for CQ and ITU zones from HA8TKS.
The project's name was suggested by Harm DK4HAA.
This software is dedicated to the memory of Tom G1PJB, SK, a friend and colleague who sadly passed away around the time I started writing it in Autumn 2025. I was looking forward to showing it to you when it was done.
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