Low voltage power supply

I have an outdoor CCTV camera already installed (not Ring) on my property which I'm looking to replace with a Ring version. The existing camera is supported via an RG59 “shotgun cable”. This cable supplies power at 24v (48VA), initially through a transformer, with video feedback to my monitor via the incorporated coax cable. Clearly using a Ring camera will dispense with the need for the video feedback, as that will be accomplished over WiFi, so its only really the power supply that is causing me a problem! However, as the camera is 70m away from the current transformer and I’ve no other way of supplying the camera in its current location I’m trying to figure out how I can use the current RG59 cable to supply the new Ring camera. If I’m understanding the website correctly, Ring has an Indoor/Outdoor Power Adapter for a Stick Up Camera which is, in effect a transformer from 240v to 24v - which is the same as my existing transformer/power supply. So, moving from the “supply end” to the “camera end” of the current arrangement I’ve already got 24v coming out next to my existing camera which is seemingly what the plug-in Ring camera can run on. So, do I simply need to somehow chop up the Ring adaptor and connect it to this existing supply for the new camera to work? I don’t think I need the transformer (240v to 24v) capability as I’ve already got that. Or do I use the Ring adaptor, connect its output to the RG59 cable and then, 70m away, connect the Ring camera at the other end? What connection is made from the 24v supply to the Ring camera itself – it looks like a simple jack plug but I can’t see how that is weatherproof. I’m sure I’m almost there but any guidance, if you can understand my question, would be appreciated!