Hi Mike,? Again, SWR does not change along a coax unless the coax has loss.? If you put the SWR meter anywhere in the coax between the rig and the amp, the SWR should read the same.? Sometimes, there are strange SWR readings when the RF travels both inside the coax and on the outer conductor as common mode currents.? This has lead to some incorrect understanding about SWR.? Putting a SWR meter at the input of an amp would be interesting.? I have a SWR meter between my rig and my SB-220.? I use the meter to check my antenna SWR before turning the amp on.? It also shows the SWR at the input of the amp.? I am happy with anything less than 1.75:1 going into the amp.? I get all the power output that I need.? GL with your amp.?? ....Bill K3HZP
Bill K3HZP