BG123557204 Supposedlyyes, although I personally never tried it. Radiolink is listed as one of many protocols supported by the multi-protocol module found inside the transmitter. In Radiolink's case, you may need to perform additional frequency tuning on the transmitter, in the same place as you set up the protocol used for your RC model.

BG123557204 Yes,the multi-protocol module supports over a hundred different protocols and sub-protocols, including Spektrum's DSM2 and DSMX. You can look up "Multiprotocol TX module" for a full list of supported protocols.

BG123557204 No,they are two completely different things. JST is a brand of connectors. They have various connector types, including PH2.0, GH, SH, XH and many more. Normally, you need both connectors of the same type to match, although there are a bunch of exceptions. These are JST-PH 2.0 connectors, so they will work in your case.

BG123557204 Dependson what type of receiver it is, exactly. But generally, it should be capable of binding, as multi-protocol transmitters support over 100 protocols and sub-protocols. You can look up "DIY-Multiprotocol-TX-Module" project on github for the full list of protocols support and check if your specific receiver would work.

BG123557204 Theprotocol it uses is MJXQ, with E010 as sub-protocol. If your Taranis X9 has multi-protocol support (and, ideally, OpenTX), then you can scroll through the list of the protocols on the model setup page. The protocol is auto-bind, as there's no button on the drone itself to begin binding. That means that once the drone detects the right signal from the transmitter, it will bind to it (the LEDs on the drone will stop flashing and stay solid, as with the default transmitter). However, selecting the right protocol alone isn't enough - you may need to tune the frequency in the protocol setup (anything other than 0) and it should work. You can try looking up videos on how to do it step-by-step, as well as look up OpenTX's multi-protocol page for more information on binding. Additionally, once you get it to bind, you can set up channel 5 as a switch to start flipping function, as with the default transmitter.

BG123557204 The remote control antenna should be separately from the controller, on the side of the packaging. If you look at the first picture of the product, you can see one on the right side of the containers. The antenna can then be screwed into the remote control. I've had issues around 1.5 meters away, while other answers say they can get up to 3 meters range. So, I'd say it's safe to assume that you won't get a lot of range with these, even with the antenna fully extended.