Re: FDM-DUO overload issues
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Here are some screen snapshots of the SW-2 spectrum display. I have the spectrum bandwidth set to 6144 KHz. I am injecting a -10 dbm signal at 4 MHz into the antenna jack on my Duo. Notice that the ADC Clip light is not on. The 8 Mhz signal is the 2nd harmonic from my HP signal generator.
I have increased the signal level to -9 dbm and the ADC Clip light is on. However, the Duo’s ADC chip is not in overload.
I have increased the signal level to -8 dbm. The ADC Clip light is still on and the ACD chip is in overload.
From: EladSDR@groups.io [mailto:EladSDR@groups.io] On Behalf Of Steve Knell
Yes, I see the PK flashing at times particularly on 80/40 but more recently on 20M because I have improved my antenna setup. I only use the ham bands and I have no nearby AM broadcast transmitters. I don't want to criticize the FDM-DUO because it's done a superb job for me and you get what you pay for. No-one could expect it to compare with one of the high-end $4000 radios.