Just as an aside, if budget is a concern or
you are only interested in one band, consider buying
one of Small Wonder Labs "PSK Series" of
monoband QRP PSK31 transceivers. They were sold for years
as kits. (Now discontinued but Dave Benson says that
"There is a successor in the pipeline".)
Anyway...they are excellent performers
can occasionally find a used one in the ham classifieds
for $75-$100. If by chance you find an un-assembled kit
for sale, BUY IT. They were super fun to build and operate.
The first one offered, the PSK-20, appeared on
the cover of QST back in the mid/late 90's when PSK
was just getting started. My PSK-20 is from this
era and is still running great.
Just something to consider.....
73, Ken AD6KA