A "long" wore (in my case ~70') with a 9:1 matching transformer,
with an external attenuator (pull a 10dB, 20dB and 40dB design
from an older ARRL handbook or online, I had a link but it is now
dead. And a HF high pass, MW reject fitler and an FM BCB band
reject fitlers will do wonders for the PCR1000. Leave the DSP
module in your '75, it is a much better HF receiver then
the PCR1000 could even dream of being.
I view the PCR1000 as a glorified service monitor, and a task
specific scanner. I have made lists of frequencies for "special
events", T-storms, floods snow/ice storm, eathquake, nerve gas
leak(I live ~20 miles from a major nerve agent storag and disposal
site). I also have a list of HF frequencies for similar special events.

I have an older 40MHz laptop, with Win 95B, for such emergencies.
Before running any software be sure to backup the EProm. Even with
the Icom factory software Eprom corruption has been known to happen.

A crossed dipole over a set of crossed reflectors or metal screen
make a good begining WXSAT antenna. QDXis clearly the way to
go, a mast mounted JFET(or MOSFET) preamp will make that simple antenna
about 80% as good as a QDH.

Good luck

Terry