how wide a bandwidth can I send via DAX?

  • 1
  • Question
  • Updated 4 years ago
  • Answered
loving my Flex 6500 btw :)

very impressed by it - i really love the pandapters :)

quick question ... how wide a bandwidth can I send down DAX??

Can't see to find how wide FLdigi will decode for example or cw skimmer in pileups

any ideas?

apologies if its a common question .. I did a search and could not see an answer


Simon ZL4PLM
Photo of Simon Lewis

Simon Lewis

  • 495 Posts
  • 117 Reply Likes

Posted 4 years ago

  • 1
Photo of Steve - N5AC

Steve - N5AC, VP Engineering / CTO

  • 1034 Posts
  • 1008 Reply Likes
Official Response
DAX provides about 10kHz of real bandwidth in a 24ksps payload that gets upsampled to 48ksps in you are using Windows sound cards.  There is a raw_iq command that can be sent if you are using the SmartSDR TCP API which will expand this to 20kHz of bandwidth as IQ data.  DAX data is centered on the slice receiver that the DAX channel is associated with.

DAXIQ provides 24, 48, 96 or 192 ksps IQ data with approximate bandwidths of 80-90% of the sampling rate.  DAXIQ data is centered on the panadapter that the DAXIQ channel is associated with.