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I've modified my TS352 to attach the Pluto and it is giving significant gain. I'm sure someone with steadier hands could do a better job. I hope to measure it if I can borrow some better kit at the weekend. There was significant feedthrough from the analogue modulator - the unit was transmitting analogue on 5665MHz and digital on 5763MHz at the same time. The modulator was disabled by removing a tiny resistor.
Datasheets: http://www.skyworksinc.com/uploads/docu ... 02393B.pdf
https://www.monolithicpower.com/Portals ... 4_r1.0.pdf
These PAs are very sensitive to output SWR - as I found out to my cost this evening. Whilst testing a new RP-SMA to SMA adaptor, it clearly was not done up tight enough, and there was a green flash and magic smoke from the PA. Both RF Gain blocks and the buck regulator diode blew up. Hence the lid-off photo!
- PA1 Small.jpg (134.39 KiB) Viewed 1531 times
- PA2 small.jpg (150.29 KiB) Viewed 1531 times
The drop off is dramatic above 5700MHz, which is where I want to use it. The Pluto itself only drops a dB or so. I'll try to measure the analogue output of an unmodified one if I can find the correct attenuators.
The Pluto itself was only outputting 0.1mW, so 1mW would give nearly the maximum linear output of 400mW even above 5700MHz. Charles said there were several gain adjustments in the Pluto, so maybe that will come.