I was introduced to the 1077B, a most-helpful piece of equipment in high school vo-tech. This along with about eight 21" color TV's (RCA, Philco, GE) donated years before. Of course, the Zenith roundies were easily fixed and then sent on to the truly needy.
The older students got bored with them, yet but sets continued to be freely given to the "shop class" and I used the Analyst to locate dead tuners, IF stages, video 1-2 amps and most importantly, determine if H-oscillators were dead or flybacks shorted when HOT's red-plated.
Good times during the school day, payback for the daily crap I endured until 10th grade
I have a 1076 but have not fired it up, opting instead to use a Sencore VA-48 for the color sets Ive been doing.
I will say though, the 1075-77 series is great for older sets like that RCA ,Al.