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Now That's a Resistor!
A Dale model RH-250, 250 watt, 400 ohm, non-inductive resistor. A pair of these terminating a rhombic or long-wire V antenna (one per leg) can handle a full kilowatt of RF power.
PC070184
Kronos Resistor at RIBCO, Rock Island, IL 1/24/15 for the release of their EP, "Accretion of Absence"
The screen grid resistor of this output tube had drifted way out of spec. I think it was reading about 520 ohms. The 1.5k resistor was completely burned up and shorted out.
This amp will see heavy use, so I went with wire wound resistors for both output tube screen grids.
The one on top (brown green orange gold) is a 15K resistor which is used for most portable devices. For devices such as the iTouch you may need to use the 100K resistor.
Clip the positive legs and one side of each resistor to around 5mm in length. Solder a resistor to each positive wire.