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On 06/02/2023 11:26, Richard wrote:

I haven't seen any info about the 4-capacitor short

Richard,

One of the many past posts referring to this is /g/QRPLabs/topic/96637601#98443
Reading/searching old posts will reveal a lot more.
It seems many do not have need to remove them, but do anyway.

Also presumably to get it to transmit while running the input analysis is to use the PTT socket

I do not think it is intended to TX, just to observe the input. Maybe interesting but not essential! I think the manual gives details of the setup if you really want to.

73 Alan G4ZFQ