The FRG (frog) 7000 was my first HF receiver. I had it hooked up to a very simple home-made dipole antenna on my attic. And what fun I had with it!
Because it was my first rig, I didn't really know what to expect in terms of reception quality. The FRG-7000 requires constant tuning, especially when listening to weaker stations or CW transmissions. But I did manage to hook the 7000 up to my laptop to decode CW, PSK, etc.
What made me sell the 7000 in the end was the lack of stability (the constant need for tuning) and the fuzzy 'pre-selector'. To listen to a specific frequency, you first have to set the frequency band, then set the pre-selector so that it matches the band, and then do the actual tuning. Switching frequencies requires a lot of knobs to be dialed.
All in all, I've had very much fun with the FRG-7000, but it does require some work. For some people that might just be the charm of this rig.