Hi, you actually need an inductor or choke in line with the +ve supply line to the CB, this will reduce the whine. Molyslip will not work in this instance.. :lol: :lol:
They are small coils of copper wire wound round a ferite former, and are available from CB shops, Maplins etc. They are slightly larger than a fuse in a domestic plug. Some are rated by the inductance value (mH etc) , some by their amp rating, you will need one of approx 3 amp rating.
Also check that the earth wire to the CB is adequate and as short as possible. 10-4 Rustic
Just thought I'd add this having read your earlir thread with a burner, if you are powering both the burner and CB off same supply you may need a bigger choke, but I am fairly confident that the 3Amp choke will be ok for the CB on it's own.
You could get earth currents circulating in the cables between the CB and the burner especially the coax, so you may need to experiment a little with where to get the 12V feed and where to earth it. Bolting the CB or burner to metal could also cause a few problems. Re Aerial, you will need to replace the aerial, although you could shorten the aerial to a fraction of the wavelength, eg 1/2 wave or 1/4 wave but not worth the effort, and the efficiency will be well down.
