TS450S.5 An error crept into my recent bulletin...excuse me...message on this subject. Near the end there was a recap, which said to close the switch for MARS operation immediately above 4 MHz and open it for normal antenna tuner operation. This is backwards, and was done correctly earlier in the message. The proper positions are OPEN for MARS operation immediately above 4 MHz and CLOSED for normal antenna tuner operation. Sorry 'bout that. 73...