My Humble Little Airline GRX-4025A
 

Picked this up last Friday along with a Sansui QRX-5500 Quad receiver, and a Pioneer SX-1080. The TV was really dusty and dirty, but cleaned up well, (sorta like me).
I replaced the main filter cap and brought it up on a variac and DBT so I could see if there was any problems. Got a dim raster with no horizontal locking. It is is going to need some work.
The 17AVP4 tested really weak. I rejuvenated the tube, and now have a nice bright raster.
It's kind of cute in a homely sort of way. The controls on the side take up a good portion of the case.
I couldn't find any service info whatsoever anywhere. If anyone has a service manual, I could really use it.

See if there's a chassis # somewhere. It's built by Sonora.
Circuit wise, it's simular to a Travler. The chassis layout is the same.