radio power supply circu
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Technical Reference : Amplifiers : HF Amplifiers
- Building a Robust PL519 Tube HF Amplifier
- his article explores the construction of a PL519 tube amplifier, utilizing Ulrich L. Rohde N1UL's insights. Focusing on a modest 25W continuous output, the design ensures robustness with forced air cooling. The detailed breakdown covers input matching, screen grid voltage generation, bias adjustment, anode power supply, heater power supply, and monitoring circuitry, providing valuable guidance for ham radio enthusiasts.
[ Hits: 71 | Votes: 0 | Rating: 0 ]
- External Keypad for FT-817
- An external keypad for FT-817(ND), for the serious portable/field-day contester/operator. Homebrew it with the free firmware and public circuit diagram.
The circuit is very simple and takes power supply from the ACC port of the radio
[ Hits: 2596 | Votes: 2 | Rating: 5.5 ]
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