This listing is for two NOS 9001 vacuum tubes by RCA, one of which is branded Tung-Sol; both contain RCA's stop-sign branding around the tube number.

This Tube Test NEW 100% and Passes life test.

The 9001 miniature valve is a sharp cut-off UHF pentode. Essentially this is the 954 acorn valve on a B7G base. The high frequency of operation is possible without a co-axial construction mainly due to the very small size of the electrode system.

Shipping: $3.45 Each Additional: $1.00