Ommonly used in SSB, AM linear power amplifier, CW, FM, power amplifier, and the most basic signal amplification. Commonly used in SSB, AM linear power amplifier, CW, FM, power amplifier, and the most basic signal amplification.
eBay
(Output: 6W (see sheet). 1 Power Amplifier). Maximum gain: 11dB. Typical gain: 10dB.
eBay
Common used in SSB, AM linear power amplifier, the CW, FM, power amplifier, and the most basic signal amplification. Output Power: 45W (Max.). Input Frequency Range: 3M-30MHz(HF channel). -The upgrade board test data,so it can be used for all HF Channel.
eBay
Again seeing the photos is the best way to understand what I’m seeing. Has a 12BA6 tube. I will say it has multiple transistors and there’s a long black cord that soldered to the board and at that point it’s simply labeled + & —.
eBay
Widely be used for high dynamic range receiver application, and amplify small signal of 110dBM. This is a ultra low noise, high linearity, low noise amplifier module. It can be cascaded several modules in order to improve.
eBay
3-28MHz 30W Short Wave Power Amplifier Board CW SSB Linear High Frequency power amplifier. Output power: 30W (7MHz) 13.8 volts about 15W when pushed by 0.2W, about 30W when pushed by Frogsong Kit 2.5W.
eBay
POWER AND IMPEDANCE: Ham radio shortwave power amplifier has an input power of 3‑5W and an input output impedance of SMA 50A. Item Type: Shortwave Power Amplifier. 1 x Shortwave Power Amplifier. CONNECTOR SPECIFICATIONS: HF RF linear amp uses standard SMA female connectors, suitable for connecting most devices.
eBay
3-28MHz 30W Short Wave Power Amplifier Board CW SSB Linear High Frequency power amplifier. Output power: 30W (7MHz) 13.8 volts about 15W when pushed by 0.2W, about 30W when pushed by Frogsong Kit 2.5W.
eBay