I am looking now at yours. So you convert to that bigger LM40.
I am making notes, thank you. Also, thanks for reminding me about robotics.co.za
Yes it should work as long as it is resonant for 868 MHz band. You can always use an adaptor on the coax side. One thing though is 868 MHz does lose a lot of signal over distances of coax so you want to keep coax short, or use LMR400 type coax for that frequency. You can see my antenna, and some tips, on my page at https://gadgeteer.co.za/hamradio/meshtastic-in-south-africa.