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VU2NAN - NANDU
Handy 1 kW HF Dummy Load
Years ago, after replacing the tubes of a Heathkit SB-200 Linear Amplifier, I was on the lookout for a dummy load to test it.
It then struck me that a 230V ~ 1kW electric hot plate, with its heating element resistance close to 50Ω, would do.
1kW HF Dummy Load
The mains plug of the hot plate was replaced with a PL-259 before connecting it to the output of the linear amplifier.
The amplifier was successfully tested, with its Pi tank circuit providing a proper match to the dummy load.
At a later date, the same exercise was repeated with a Dentron GLA-1000.
Nanda Kumar S
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