One watt is enough. Modern carbon film will do fine, they do not drift. Metal film will also do fine. I think Garry used to recommend oxide coated film. Since the drop is part of the measurement of "plate" current (actually cathode current) the value is of some importance.
Old fashioned carbon composition resistors were never better than 5% because the heat of soldering them could cause that much drift.
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On 2/8/2025 6:24 AM, Craig W8CS via groups.io wrote:
After updating my AC-4, I fired up the T-4XC and am dealing with all of the little usual issues after being dormant for a quarter century.
Checked the final Cathode resistors which are 15ohm/1Watt. They are running at 18/17.5 ohms, roughly 20% high.
* Is there a specific type of resistor composition that you prefer to
replace these with?
* Recommended to upgrade larger than 1W?
TIA
--
Craig/W8CS
Greenville, SC
--
Richard Knoppow
Los Angeles
WB6KBL
SKCC 19998
