Alan

You can do a free transfer of your AncestryDNA data to Family Tree DNA. You can find instructions here:

https://www.familytreedna.com/autosomal-transfer

You need to pay a fee of $19 to unlock the MyOrigins report and the chromosome browser feature.

Note, however, that AncestryDNA introduced a new chip in May 2017 and there are fewer markers in common with the FTDNA chip. As a result you don't receive any of the matches at the speculative level. However, it's the closer matches that are more likely to be relevant.