I found that once you train the tuner to your antenna, and you then improve your antenna, so you SWR goes from 3:1 to 1.5:1 on a particular band, the tuner will not be triggered into tuning on a frequency that it already has in memory. So you will see your SWR is higher than you know it should be, and for the best tune you will have to force a re-tune on every frequency you have locked into the tuners memory.
LDG support could not understand why I wanted to know if I could wipe all memory at one time. They think it works well the way it is, but they didn't consider that the tuner would be used on more than one antenna, or that a Ham would improve their antenna at some point.
The trouble is that the tuner has two things it looks at, one is the SWR, and the other is the memory at that particular frequency. If the memory shows that the frequency was tuned, and it pulled a 4:1 down to 2.5:1, when you modify your antenna to improve that SWR, the tuner will give you 2.5:1 until you force it to tune again. The only way to get it to tune again on its own is the make the antenna worse, and drive the SWR up over the threshold of what the tuner is programmed as safe.
LDG support could not understand why I wanted to know if I could wipe all memory at one time. They think it works well the way it is, but they didn't consider that the tuner would be used on more than one antenna, or that a Ham would improve their antenna at some point.
The trouble is that the tuner has two things it looks at, one is the SWR, and the other is the memory at that particular frequency. If the memory shows that the frequency was tuned, and it pulled a 4:1 down to 2.5:1, when you modify your antenna to improve that SWR, the tuner will give you 2.5:1 until you force it to tune again. The only way to get it to tune again on its own is the make the antenna worse, and drive the SWR up over the threshold of what the tuner is programmed as safe.