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If your SWR goes up (or changes at all) when running an amp one of two things is happening.

1) The output of the amp is not properly tuned to match to a 50 ohm transmission line. This is the typical cause of this problem.
2) Something in the system is being pushed to or beyond its design limits.

I'm running an amp made by a local, SWR's show the same weather it is on or not.

The DB

[QUOTE="The DB, post: 392344, member: 21346"] If your SWR goes up (or changes at all) when running an amp one of two things is happening. 1) The output of the amp is not properly tuned to match to a 50 ohm transmission line. This is the typical cause of this problem. 2) Something in the system is being pushed to or beyond its design limits. I'm running an amp made by a local, SWR's show the same weather it is on or not. The DB [/QUOTE]

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