Re: Over-Driven FT-8 QRM #FT8 QRM #FT8

Wa4kfz
 

I suspect too many hams are operating with the SSB compressor on. One advantage of the newer gear is that it supports a defined digital mode where the compressor is always off.

73,
Mark wa4kfz

On Sep 21, 2019, at 4:50 PM, Tony <DXDX@...> wrote:

All:

The interference caused by over-driven FT-8 signals is concerning. The distortion that shows up on either side of the FT8 watering hole is often stronger than the signal one is trying to copy down the band.

The attached image shows an example of the bandwidth occupied by distortion products that are well beyond FT8 operating frequencies.

This has been going on for some time now and it seems most prevalent on weekends when there's lots of activity.

Am I the only one noticing this?

Tony -K2MO




<20000813_201058.bmp>

Join main@digitalradio.groups.io to automatically receive all group messages.