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ADC overload when tuning amplifier.
Posted: Tue Dec 26, 2017 6:00 pm
by K4HNO
Is there an option for auto-attenuate to function when using the TUN button? After using pure signal with a barefoot rig I forget to adjust the step attenuation value and overload my receiver when I start to tune my amplifier. This is a mistake that is very easy to do. I would be happy if I could force the attenuator to a certain value when using TUN, but I don't see a setting for this. Am I missing something?
Jack, K4HNO
Re: ADC overload when tuning amplifier.
Posted: Tue Dec 26, 2017 7:34 pm
by w-u-2-o
There is no such function currently in the software, I'm afraid.
The good news is that as long as you are not exceeding +13dBm (20mW) at any RF input connector then your hardware is safe and this is merely an annoyance.
At 1500W (62dBm) you need to ensure a minimum path loss, coupler plus any attenuators, of at least 49dB prior to the radio.
73,
Scott
Re: ADC overload when tuning amplifier.
Posted: Tue Dec 26, 2017 8:05 pm
by K4HNO
Thanks Scott. I wasn't sure of the limit that the receiver hardware could withstand. I have a total of 53db of attenuation so I am ok.