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[AMPS] need info on PL-172 pentode

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Subject: [AMPS] need info on PL-172 pentode
From: Lane C. Zeitler" <km3g@cts.com (Lane C. Zeitler)
Date: Tue, 4 Aug 1998 22:16:20 -0700
This tube was used in the Hallicrafters HT-33 amp. Can't find any data on it
though in my handbooks. Looking for the filament voltage and current rating,
max plate volts and various currents and voltages of the other elements. A
web page if known where this data can be found.

Any known mods to convert the HT-33 to use another tube?? reportedly this
tube is rated at 1500 watts plate dissipation. Interesting that the company
chose a pentode.

Any info greatly appreciated.

Lane
KM3G
San Diego


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