Predistortion Outputs?

  • 1
  • Question
  • Updated 8 months ago
I'm curious what the two Predistortion Outputs on the back of the PG-XL are for?  Perhaps something to do with a future Adaptive Predistortion feature?  Is there a link to the PG-XL manual available yet?
Photo of KF4HR

KF4HR

  • 138 Posts
  • 49 Reply Likes

Posted 8 months ago

  • 1
Photo of Tim - W4TME

Tim - W4TME, Customer Experience Manager

  • 9148 Posts
  • 3467 Reply Likes
They are an attenuated tap for RF feedback needed for adaptative pre-distortion.
The PGXL manual is still in draft form.  It should be made publicly available in the near future.
Photo of KF4HR

KF4HR

  • 138 Posts
  • 49 Reply Likes
Tim, is the purpose of the adaptative pre-distortion feature to provide less distorted  transmit audio?
Photo of Tim - W4TME

Tim - W4TME, Customer Experience Manager

  • 9148 Posts
  • 3467 Reply Likes
It isn't just for audio as it operates on the transmitted RF.
https://en.wikipedia.org/wiki/Predistortion
Photo of KF4HR

KF4HR

  • 138 Posts
  • 49 Reply Likes
Where will these adaptative pre-distortion ports connect to?
Photo of Tom

Tom

  • 96 Posts
  • 19 Reply Likes
Here is an interesting presentation:
http://video.openhpsdr.org/HRF2014/PureSignal1.2.mp4

Tom, SP7WT
Photo of Tim - W4TME

Tim - W4TME, Customer Experience Manager

  • 9148 Posts
  • 3467 Reply Likes
KF4HR - an RF input on the radio