sma coupler question

[radionortheast]

I just though I would ask, I have this little amplifier which runs at 1w, there is an sma coupler connects from it to the low pass filter, on the filter is an sma connecter, i’m wondering would there be any improvement, if I desoldered the lead swapped it for one that had an sma connector already installed on the end of, it wouldn’t be going through the coupler, or maybe worth stripping down an sma lead, connecting the wires together avoiding the coupler. The 2nd is easier to do, suppose it might be hard to do the soldering the side plate of the amplifier is removed.

At the back at the output of the filter theres another sma, converter to f-socket to fit the cable, it is 75ohms at the moment, it would be too hard to get pcb f-socket instead, don’t know infuture might want to use 50 ohms, it works without a fault, it is set up to work with 75ohms at the moment. With the aerial there is a break in the cable, this connected with a f coupler, considered changing it to a continuous run, I suspect there wouldn’t be much loss in it, were connecting two f-leads together through at f coupler, I suspect might be worth doing the first, trying to get as much as can be got out of this.

[Frequent Lee]

Ideally there should be a clean pathway between the RF output to the radiator whether it is a dummy load or real world antenna. Every coupling adds some loss but in your situation it's going to be unnoticeable to be honest, I'd sack the sma off and remove it to wire it directly.