Did not find answers to my reqests
You tap the 68.985 IF in the radio and couple this signal to one of the cheap DVB TV tuners. This plugs in to a USB port on your computer. You run HDSDR and you get a SDR receiver with bandscope. Look up my call on QRZ and you will see what I see on my Yaesu FT990. My radio is controlled by OmniRig, so when I click on a signal, the radio follows.
Search eBay for "USB Digital DVB-T HDTV TV Tuner"
The tuner uses the IF signal before any filtering. All the filtering is done in HDSDR.
Sounds great with a good set of speakers.