I want to connect my base speaker to my amp using either bluetooth or RF, any suggestions?, I want to build it myself of course. Thanks in advance. Munaman2020
BT is RF, it's "bass" not "base", and this has nothing at all to do with COVID.
But other than that, great first post.
Good on you mate 
I want to build it myself of course.
You are not permitted to build a transmitter unless you have a licence.
The simplest licence to get is a ham licence but that does not permit you to use the wi-fi frequencies.
Do you mean actually build or do you want to assemble from modules?
If assemble just get a pair of cheap Bluetooth send and receive modules off eBat.
Grumpy_Mike:
You are not permitted to build a transmitter unless you have a licence.
The simplest licence to get is a ham licence but that does not permit you to use the wi-fi frequencies.
The 13cm amateur radio band (2300-2450 MHz) overlaps with both WiFi (2401-2473 MHz) and Bluetooth (2402-2480 MHz) radio frequencies.
I know of projects that reuse WiFi routers in the amateur radio bands (e.g., Broadband-Hamnet), but I don't know if there's any projects that use Bluetooth hardware in a similar way.
christop:
The 13cm amateur radio band (2300-2450 MHz) overlaps with both WiFi (2401-2473 MHz) and Bluetooth (2402-2480 MHz) radio frequencies.
Thanks, didn't know that.
However transmitting music on the amateur band is not permitted ( at least in the UK ). I suppose transmitting Wi-Fi and Bluetooth could be classed as data, but in the UK you have to confirm your call sign every so often, normally by voice or Morse code, so it is not such a viable option.
The legal way would be to build it as a ham and then submit it for type approval to operate in the unlicensed bands.
Anyway if the OP has to ask then he probably can't do it. I would certainly not be able to do this due to lack of skill and lack of suitable test instruments. Knowing what to do and knowing how to do it are two very different skills.
Grumpy_Mike:
However transmitting music on the amateur band is not permitted ( at least in the UK ). I suppose transmitting Wi-Fi and Bluetooth could be classed as data, but in the UK you have to confirm your call sign every so often, normally by voice or Morse code, so it is not such a viable option.
In the US, at least, music is not permitted on phone emissions (I had to look it up to be sure). I understand that to mean music is permitted over other "data" emissions. From what I've read (unofficial opinions), that rule exists only so that amateur radio wouldn't "compete" with other music broadcast services (AM and FM broadcast stations).
And a call sign (again, in the US) can be transmitted using a digital mode, according to 97.119:
By a RTTY emission using a specified digital code when all or part of the communications are transmitted by a RTTY or data emission
(But I haven't read far enough to see whether "a specified digital code" means it must be an "approved" digital code or not.)