Powertone 4-Tube TRF Tuner TRF-1967

Designed for exacting public address and home radio installation. This tuner was primarily constructed to produce ample sensitivity for all needs. Selective—yet will not cut the side bands so essential to true-toned musical reproduction. Employs the new '58 series tubes as R.F. amplifiers, and the ’56 as a linear power detector—handling ample signal energy without blocking. Output standard high impedance—4000 ohms. A matching transformer which is used with the tuner when remotely connected may be supplied at a nominal charge. All component parts are the best that the market affords, including genuine Hammarlund tuning condensers and full-vision illuminated dial.
Uses 3-58 and 1-56 tubes.
Features:
Hammarlund 4 gang tuning condenser
High gain shielded R.F. coils
Solid metal construction
4 tubes—more selectivity 

Tuner, wired and tested less tubes.

Complete set of matched R.C.A. Licensed tubes. $1.95 USD.

In questo link sono elencati 38 modelli, di cui 29 con immagini e 4 con schemi.
Elenco delle radio e altri apparecchi della Try-Mo (Powertone) Radio Co., Inc.; NY