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Tuesday, 11 September 2018

FT-DX5000 ALC - issues?

Well,

I wanted to use the FT-DX5000 with the SPE Amplifier from here. And rather than constructing another attenuator; I thought I would try and use the ALC to reduce the power output.

I made this circuit:


and have powered it from the 13.8V RCA socket on the back of the radio.

Now, the output of the device is adjustable from about -0.2V to -4V but no matter what voltage I set it too, the output power of the radio doesn't change.

I'm beginning to think there is an issue with the rig, or alternatively I am doing something quite dumb.

Any ideas?

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