Power Genius XL and predistorsion

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The new PG has a predistorsion connector for each output signal. How the signal is going to be fed to a F 6700? I do not note any predistorsion connector on its back. Will Flex provide some hardware update, or predistorsion in F 6700 is not possible? Do we need V3 of SSDR  to implement the concept predistorsion in F 6700 and newest range of Flex made radios?
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Tom

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Posted 2 years ago

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Mack McCormick, Elmer

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Official Response
The predistortion output will be fed back to RX A or B on the 6700.

Mack
W4AX
Alpha Team
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Tom

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I do appreciate your response ,OM Mack.
Any further comments about how the PG signal sample is going to be fed to F 6700?
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Mack McCormick, Elmer

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I thought I answered that. An RF cable will go from the PGXL pre-distortion output to the 6700 RX A or B input. The rest will be done in software.

Mack
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Denley W3XY

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I hope the software will allow for an external switching arrangement so I can still use the RX A and B for receive when not transmitting.
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kr4k

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What is the impact from this particular distortion algorithm on digital signals, such as JT-65, MT-63, Codec 2, PACTOR, and MIL-STD 110A? Will DIGIU mode automatically route signals around any distortion?
73/gus
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Paul

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Hi Gus. In principle, APD optimises the linearity of the transmit path - hence minimising IMD. It is therefore beneficial on digital modes as well as phone. No doubt someone from flex could comment on whether it can be bypassed on digital modes. But I can't imagine why anyone would wish to do so. Cheers.