I just bought a used Yongnuo RF-602 setup that I hope will work OK. Won't know until I get it though. The person said he used it on a Nikon D90 and that is what I have. I hope to try to use it on the non-D----al cameras I have which I prefer to use.
The RF-602 will work fine on your non-digital cameras. Every transmitter is a permanent transmitter, and every receiver is a permanent receiver.