First ( late 1920s America): if one had some sort of serum or fluid other than blood in their bloodstream, would it have been possible for doctors/researchers to identify, perhaps (more desirably) even isolate, the fluid from the blood stream? Perhaps from a sample? Second (also late 20s Am): How difficult was it to cross borders? Specifically speaking: From Eastern European countries to Russia, Russia to India or other South Asian countries, and between African colonies/countries. Third (WW1): If one found a radio or any other form of electronic/mechanic transmitting/communication device receiving/broadcasting a signal, could one trace and/or follow the signal to track down where the signal is coming from/going to (assuming they were a mechanical whiz of some kind)? Thanks to all those who will contribute, I may make frequent visits to this sub as I get deeper into the story.
Third: Radio DF (Direction finding) was totally a thing in WW1 and very smart people worked very hard at getting very good at it.
The California Historical Radio Society did this nice summary
The declassified NSA archives are also a good place to look. beginnings_radio_intercept.pdf and trafficanalysis.pdf
And Old Crows (ex Electronic warfare types) have a bunch of photos of what WW1 "state of the art" SIGINT kit looked like InfoAge_and_Early_Developments_in_EW_and_Coms_ARK%20_2.pdf
Hi there - we're happy to approve your question related to your novel, and we are happy for people to answer. However, we should warn you that many flairs have become reluctant to answer questions for aspiring novelists, based on past experience: some aspiring novelists have a tendency to try to pump historians for trivia while ignoring the bigger points they were making, while others have a tendency to argue with historians when the historical reality does not line up with what's needed for a particular scene or characterization. Please respect the answers of people who have generously given you their time, even if it's not always what you want to hear.
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