[amsat-bb] Sinclair RadioLabs . Preamp frquency range?

Hello all I found at a junk an old RF preamplifier from

Sinclair Radio Labs Tonawanda N.Y

I would like to know anymore info and the frequency range!

Power 14 V -+2 With two small tuning knobs at the front panel 10.5 x 6.5x 4cm in dimensions and two flanks with 2 holes at each side for fixing There a one transistor with 4-pins inside a cap heatsink soldiered to the board Components in two compartments made from pcb

Thank you in advance Nader - st2nh

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