Are you talking about an amplifier feeding the antenna?I am thinking a simple passive 50ohm diplexer (a 4ch one) will suffice, like this Wilson item. The passives work bi-directional. Although I may need to add an attenuator so as to not swamp the input on amp.
NO! It would increase the hardware cost immensely. You would need a transmitter and receiver with a much higher frequency then Bluetooth if you want to modulate it with even a single 2.4GHz signal. Using four signals of different frequencies mixed together as a modulating signal would require a very complex custom demodulator to recover and separate the original four 2.4GHz signals. What ever is receiving that signal would require two way communication for the 2.4GHz signal handshaking protocol. Are you capable of designing and building such a system?I can do it with an amp and antenna for each A/V camera, but getting it down to one amp and one antenna would simplify the amount of hardware & costs.
This is almost certainly not legal. The ISM band power is limited to 30dB (1W) input to the antenna, and if you have a gain antenna The ERP is limited to 36dB (4W). If your intention for the amp is to make up losses in the transmission line and diplexer that’s fine, but you can’t exceed the ERP, legally, so you’ll have to calculate that and reduce the input to the antenna to meet it.To amplify the signal.
Sorry, I realized I was thinking of WiFi, same band. Just a mental habit, broadcast is different. I am glad you are aware of the legal limitations, so many are not. 2.4GHz is a shared band and interface is a serious problem in some places.I am well aware of max power limits. Max range and best signal (using crap components) will come from max allowed power.
Why would the sending side need to be a transceiver? It's only sending data, never gonna receive data. It's send on one side, receive on the other.
This *isn't* WiFi based, right? Also, when you mix these channels in a diplexer the interaction may be much worse than in physically separated free space.wifi channels are just 5MHz apart, but are 22MHz wide. It's a bit of overlap for adjacent channels. I certainly do want to choose channels that minimal overlapping, like 1/5/9/13.
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