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very very good price/performance ratio... The product was received within the promised time frame and appears to be of excellent quality. I installed the heat sinks and everything works perfectly, without distortion. I only tested it with a 24-volt power supply as recommended, with output power (FT8) up to 15W; the gain seems a little lower than promised, but I haven't done any specific measurements. _In the picture: it is used as the final stage of a 1296 MHz transceiver, based on Analog Device Adalm Pluto.
Received quickly. The box looks nice, and even without a controller, it produces 2 watts. The output stage oscillates around 1250 MHz. After opening it, I saw that the grounding screws had been forgotten. I also checked for thermal paste between the PCB and the case, which was so minimal that it couldn't be called cooling. (Although important for a long lifespan.) After adjusting these things, the output stage works well and is very linear. Suitable for digital modulation up to approximately 1 to 2 watts of output power.