Bill, thanks for the fast reply. First answer is I did it this way because I read it on the Flex Forums as the way to do it because, while the Rx bandwidth can be increased to 5k or more, the Tx band is limited to 3k or thereabouts. But you had me worried enough to go and test if this is true or not, so I tried to transmit JT9 on 4kHz and failed. It falls off at about 3kHz. (The fact that the bandwidth selector is on the Receive submenu and there is no corresponding selection on the Tx menus so probably a clue here.) I guess it should be possible using the I/Q inputs but as far as I am aware that is not possible with WSJT-X.
On 02/06/2015 09:35, Bob Thornton wrote: Hi Bob, >> > My first build of the dev version, 1.6.0 r5483. I use a Flex 6300 with >> Kenwood TS2000 in settings and had Split operation using Rig as used for >> JT65/JT9 mode. On selecting WSPR and rediscovered the issues already covered >> of failing to Tx without hopping enabled, and continuous Tx when enabled, I >> also found I was Txing "out of band" ie 500 Hz too low. So it seems to >> continue with the use of Slice B for transmit and set this 500 Hz lower than >> standard dial but not adjust the 1500 Hz audio by the same amount. Probably >> WSPR does not need this split operation and something needs to ensure that >> Slice B is fixed on nominal dial in WSPR mode. Split needs to be retained >> because of the audio settings as typically we have DAX Rx 1 and DAX Tx 2 in >> settings for split operation on JT modes, else would need separate audio >> setups for the two modes. > > >> After removing split operation and using single slice A I have had a >> successful overnight WSPR session. > Before addressing this I would like to know why you are using split operating > mode at all with a FlexRadio 6300? I ask because I was under the impression > that you have > 4kHz bandwidth available for both Tx and Rx and that along > with a pure digital audio chain should mean that all the benefits available > from split operation are not necessary for you. > >> > (Apologies if double posted, bounced as sent from wrong account.) > > Bob >> > Thornton > > G3WKW 73 Bill G4WJS.
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