On Sat, Jul 13, 2024 at 11:36 AM, G8JCF wrote:
The 17dBm output is very attractive, but I'm not sure if it's variable, eg if the "drive control" in the various SDR s/w can control the drive level, or if the drive level is fixed at 17dBm
I've taken a look at the HL2 schematics, RFFrontend.sch and PA.sch - and the drive to the 17dBm connector, "RF1", and the drive into the 5W PA come from the same pins on the FPGA, so it looks like the RF1 RF level should be variable. Looks like I'll just have to hookup the 50ohm dummy load and 'scope the signal at RF1 and hopefully find out that it's fully variable, now that would be a neat solution.
73
Peter - GM8JCF
