The FT991A Attenuator (ATT) allows you to reduce the incoming signal on voice, data, and CW in HF to a more comfortable level by 12dB or 2 S units.
The Attenuator allows works in conjunction with the IPO/AMP1 and AMP2 and if using the Attenuator you must always have the IPO/AMP1/AMP2 set to IPO.
This is also useful for data and CW in HF where the incoming signal is overdriving your system and your software may not be able to translate the information.
7 сен 2024