hf amplifier
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Manufacturers : Amplifiers- The DX Shop
- The DX Shop Limited are suppliers of high end equipment and manufacturers of the Linear Amp Gemini range of HF to UHF solid state linear amplifiers for the serious Radio Amateur.
[ Hits: 151 | Votes: 0 | Rating: 0 ]
- Down East Microwave Inc
- Manufacturer of 50MHz, 70MHz, 144MHz, 222MHz, 432MHz, 900MHz or 1.2GHz transverters and VHF UHF amplifiers
[ Hits: 35 | Votes: 0 | Rating: 0 ]
- A Compact 600W Broadband HF Power Amplifier
- A 600W 1.8 MHz to 54 MHz power linear amplifier made using rugged MRF300 transistors featuring output power between 580W and 750W depending on band, power supply: 48V, 18A typical, 20A max
[ Hits: 597 | Votes: 6 | Rating: 7.33 ]
- 20 W HF Power Amplifier
- A HF power amplifier with a push-pull of AFT09MS015N. The (small-signal) gain of the amplifier is around 26 dB in the lower HF band and goes down to about 24 dB on the higher end and still around 21 dB at 50 MHz. Its input matching is relatively good at the lower HF and degrades above 10 MHz.
[ Hits: 175 | Votes: 0 | Rating: 0 ]
- 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 ]
- High efficiency, legal limit, solid state linear HF amplifiers
- Not a project yet, but very theoretical thoughts about very practical amplifiers!
[ Hits: 203 | Votes: 2 | Rating: 10 ]
- 432 MHz 100W RF Power Amplifier
- This article describes the construction of a 100-Watt, 70 cm amateur band linear power amplifier. It is the result of a protracted period of experimentation during which I investigated a number of final amplifier stages from obsolete UHF FM 2-way radios.
[ Hits: 239 | Votes: 1 | Rating: 9 ]
- 100W UHF Linear Amplifier
- This page details my building of a 100 Watt Power Amplifier for the 432 MHz Band based on two Motorola MRF646 transistors taking inspiration by Carlo Gnaccarini VK3PY, formerly VK3BRZ
[ Hits: 193 | Votes: 0 | Rating: 0 ]
- 70 MHz 300 W Power Amplifier
- This PA has been designed by Sergey EX8MLE and uses three Mitsubishi RD100HHF1 FETs, Frequency Range 70 to 72 MHz
[ Hits: 109 | Votes: 1 | Rating: 10 ]
- VHF UHF Low noise Amplifiers
- 2m 70cm 23cm Low noise Amplifiers, 3 Low noise amplifiers Outdoor unit with DB6NT parts
completed.
[ Hits: 128 | Votes: 2 | Rating: 5 ]
- 2m to 70cm Transverter Circuit
- A 70cm / 432 MHz Transverter Project transverter circuit is an electronic device that converts a radio signal from the 2 meter to the 70 centimeter band and vice versa, allowing a single transmitter/receiver to be used for both bands. It consists of an IF stage, local oscillator, frequency multiplier, and amplifier. The circuit must be designed for minimal signal loss, noise and intermodulation distortion.
[ Hits: 81 | Votes: 0 | Rating: 0 ]
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