I have an RCA 8T-243 with a 10BP4. I was concerned last year as to the correct type of ion trap for these tubes because my set had what apeared to be an incorrect single field trap. I had to adjust all the way back to the base to get a bright raster and feared ion burn. These tubes supposedly used what is known as a double field trap. Mine was definitly single field. It seems that someone said that if the tube had been rebuilt that it would have a straight gun and an aluminised screen. No trap would be required in that case. My tube sems to have a straight gun and I tried it with no trap and got a raster. I didnt use it for very long because I am still skeptical as to the safety of the tube. Could anyone give me a refresher on this subject since old man winter is about to create old TV time again.....
Thanks
