I've pasted the results of my installation attempt:
sudo dpkg -i SparkSDR.2.0.33.linux-x64.deb
Selecting previously unselected package sparksdr.
(Reading database ... 308132 files and directories currently installed.)
Preparing to unpack SparkSDR.2.0.33.linux-x64.deb ...
Unpacking sparksdr (2.0.33) ...
dpkg: dependency problems prevent configuration of sparksdr:
sparksdr depends on libicu72 | libicu71 | libicu70 | libicu69 | libicu68 | libicu67 | libicu66 | libicu65 | libicu64 | libicu63 | libicu62 | libicu61 | libicu60 | libicu59 | libicu58 | libicu57 | libicu56 | libicu55 | libicu54 | libicu53 | libicu52; however:
Package libicu72 is not installed.
Package libicu71 is not installed.
Package libicu70 is not installed.
Package libicu69 is not installed.
Package libicu68 is not installed.
Package libicu67 is not installed.
Package libicu66 is not installed.
Package libicu65 is not installed.
Package libicu64 is not installed.
Package libicu63 is not installed.
Package libicu62 is not installed.
Package libicu61 is not installed.
Package libicu60 is not installed.
Package libicu59 is not installed.
Package libicu58 is not installed.
Package libicu57 is not installed.
Package libicu56 is not installed.
Package libicu55 is not installed.
Package libicu54 is not installed.
Package libicu53 is not installed.
Package libicu52 is not installed.
dpkg: error processing package sparksdr (--install):
dependency problems - leaving unconfigured
Processing triggers for gnome-menus (3.36.0-1.1ubuntu3) ...
Processing triggers for desktop-file-utils (0.27-2build1) ...
Errors were encountered while processing:
sparksdr