TDL 450 Hx :
1) What is a good VSWR?
2. Has anyone noted antenna mismatch error display when a) power is tuned off at the supply/battery, b) when battery is level is low, and c) when the radio gets hot?
A Voltage Standing Wave Ratio (VSWR) between 1.5 and 4 is considered normal. If it over 4 means either the antenna cable or the antenna is not able to work well and range will be reduced.
Regarding Antenna Mismatch, please check the following things;
4. Check the antenna to make sure it is tuned to the correct frequency.
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