Originally Posted by sildene
From what I've seen, the Auto-tuners do not appear to have an SWR display, so how would you know your communication problem is due to a poor impedance match (e.g. it may be higher than 2:1, but you wouldn't know). Do you ever use a separate SWR meter with auto-tuners, or is there no point?
Some tuners such as Icom
and SEA provide an indication on the transceiver that the tuner has successfully tuned. The tuner does not change the impedance mismatch at the feedpoint, it resonates the antenna system and provides impedance matching between the tuner and the radio
. When using a tuner, reflected power is not necessarily lost
power. It is re-reflected by the tuner and the only losses are due to transmission
line losses. The greater the SWR, the greater the loss. With a tuner at the antenna feed point, this loss is nearly eliminated.