I thought this was an unusual RCA........

[mwplefty]

http://cgi.ebay.com/VINTAGE-RCA-XL-1...#ht_761wt_1141

This XL-100 uses modern-day channel buttons, but still uses four 300-ohm screw terminals (2 for VHF and 2 for UHF). I thought that was pretty strange.

[RobtWB]

fairly common sets - i think i have passed over 3 at estate sales this past year - 2 black ones and a white set - not lucky enough to find a red one