6N-6Z

6U5 Arcturus Cathode Ray Tuning Indicator (Pull)

Used * No longer available for export
MFR: Arcturus
SKU: 6U5-ARC-P

MFR: Zenith, GE
SKU: 6U10
New old stock * No longer available for export.

6T9 Tube Triode-Pentode

Designed to function primarily as a AM and FM detector and audio voltage amplifier.
New old stock * No longer available for export.
MFR: RCA, GE, Articus, Zenith, Raytheon, Philco, Telefunken
SKU: 6T8

For more information about 6T8 go here

For more information about 6T8A go here

Designed to function as a UHF oscillator in a TV amplifier
MFR: Raytheon, GE, Sylvania, Tung-Sol
SKU: 6T4
New old stock * No longer available for export.

Designed to function as an audio output amplifier and FM detector in TV amplifiers
MFR: Westinghouse, GE, Sylvania, RCA
SKU: 6T10
New old stock * No longer available for export.

Designed to be used in DC amplifier services. Same as a 6SN7 tube.
MFR: United
SKU: 6SU7
New old stock * No longer available for export.

Designed for use as a high-gain radio-frequency or intermediate-frequency amplifier.
MFR: RCA, GE, Sylvania, National Union
SKU: 6SH7
New old stock * No longer available for export.

Designed for use as a biased detector or high-gain amplifier.

MFR: GE, Sylvania, Japan
New old stock * No longer available for export
SKU: 6SJ7

NOTE: Picture for reference only.  Brands may vary.