States like Iran have signal catchers, where they can get a rough idea where a signal is coming from through triangulation. The US military has had this for over 20 years now. Often these coordinates are fed in as targets into weapons systems. If you're going the radio route these come to mind: Meshtastic: 1W, one band, local. Useful if Iran doesn't know about it. But easy to jam and probably triangulate. Wifi Halow:…
WSPR carries almost no payload data and by default it literally broadcasts your location. You could modify it but it will still take ages to send a short sentence which is probably the last thing you want when you want to avoid getting caught. Short bursty spread spectrum hopping seems to be more what the military do and they also care deeply about triangulation.
If you "announce" yourself you become a target for the signal intelligence folks. Sat phones became a liability in the 2nd gulf war, as they lit up like a beacon saying: "Bomb goes here!".