So I had a problem. I wanted to be able to broadcast a set of circuit signals representing a list of required items for a given outpost. The problem was that the radio only supports green and red channels leading to N>3 outputs intermixing signals.
Solution: Use a repeating clock that sends a signal only if Z={{my_chosen_channel_num}}. There's some odd stuff going on combinator wise to keep signal values in memory while the Z timer is on a different channel. Also requires a single clock radio blueprint in order to keep receivers and transmitters in-sync with one another.
This is my first time fiddling with circuits more advanced than if X > Y inserter_enabled so if you find a way to make this better LMK
A quick and dirty kind of way is to take the signal you wanna send, run it into the radar, but also run it into a decider combinator set to a number variable.
Like if I wanted to send 30 copper plates to station 4, I send it to a decider combinator that's always true, and has 2 outputs, one that outputs any, so the copper plate signal will pass through, and a second output for the number_4 signal, so number_4 and copper plates have the same value.
Then at station 4, I compare every signal to number_4, and if they're equal, I pass them through.
This has a flaw. Notably, requests with the same value. 30 iron plates to station 3 and 30 copper to station 4 will give each station iron and copper signals.
There's ways to encode a signal that avoid those problems, but this is a very simple one that'll still pull the right output all the time if you work around that limitation.