What sort of antenna are you using? Wilson, K-40, etc? Also, is the antenna right near any metal or perhaps you have heated rear glass (which means you have thin strips of copper in close proximity to your antenna).
Any of these things can cause enough impedence mismatch to cause your VSWR to rocket skyward.
Answers & Comments
What sort of antenna are you using? Wilson, K-40, etc? Also, is the antenna right near any metal or perhaps you have heated rear glass (which means you have thin strips of copper in close proximity to your antenna).
Any of these things can cause enough impedence mismatch to cause your VSWR to rocket skyward.