6J-6M

6KL8 Tube Diode-Pentode

For combined oscillator-mixer applications in TV receivers having IF at 40Mc.
MFR: RCA, Sylvania, Raytheon, Brimar
SKU: 6KE8
New old stock * No longer available for export.

6KD6MP-ECG Philips Tube, Beam Power Amplifier, Matched Pair (NOS)
New old stock * No longer available for export
MFR: Philips/ECG

New old stock * No longer available for export
MFR: GE Brand
SKU: 6KD6-GE

Very popular TV Sweep Tube used in Palomar Electronics amplifiers in 1970-80's.  These tubes are New Old Stock.  Glass Envelope. 
The 6KD6 had small plate cap.  
Size: 4.52" tall from top of Plate cap to bottom of pins, 3.7" tall (Glass Envelope), 1.5" Diameter
New Old Stock * Not Available for Export
MFR: ECG/Sylvania

Can be used as a substitute for the 6LF6
New old stock * No longer available for export
MFR: RCA
SKU: 6KD6-RCA

Designed to function as a sync separator, AGC amplifier, and noise inverter

New old stock * No longer available for export.
MFR: Sylvania, RCA, CEI, Magnavox
SKU: 6KA8

Tube is designed to function as a discriminator, limiter and audio voltage amplifier in FM and intercarrier television receiver.
MFR: GE, Amperex, Sylvania, Zenith
SKU: 6BN6
New old stock * No longer available for export

Designed to operate as an oscillator in in the horizontal deflection part of the TV receiver.
MFR: GE, Sylvania, Dumont
SKU: 6JN8
New old stock * No longer available for export.