I have noticed that some SSB tube transmitters only send a single side
band plus the carrier in AM mode. Does this provide a lower quality
signal for reception? What are the advantages and drawbacks versus DSB
plus carrier AM transmitters? It seems like DSB is the preferred mode
for the AM crowd.

Some receivers, such as my SX-101a, will demodulate only one side band
which must be selected. Does this provide lower fidelity than full
wave AM detectors? Does this compromise its performance as an AM
receiver?

Dan