On 03/01/2016 19:28, Michael Black wrote: > At least for my autotuner and rig (Omni TenTec VII and SG-237 the 10Hz > works quite well...the 100Hz still causes some retuning on a few bands.
Hi Mike, I am still struggling with this. If you shift your DF by 1Hz from 1500 to 1499 then the Tx VFO is moved down by 500Hz but if you move your Tx DF by 500Hz from 1500 to 1000 the Tx VFO still has to move 500Hz no matter what "split resolution" you use. Are you saying that you want to do smaller Tx VFO adjustments to avoid 500Hz steps when you only move the Tx DF by small amounts? I can see the potential gain of limiting the upper audio frequencies if your rig rolls off as low as 2200Hz but that seems a problem with the rig. SSB phone would not be very good with such a restricted bandwidth. Normally the Tx filter is reasonably flat between ~100Hz to 2800Hz i.e. a 2700Hz wide filter. If yours is rolling off as low as 2200Hz I would suggest the transmit carrier point is incorrectly aligned. I would check your Tx signal for suppressed carrier leakage! On the rig resolution situation, AFAIK they all truncate, in fact it is the CAT sender that usually truncates because the CAT frequency commands lack the lower digits. There are exceptions like the Elecraft K2 which ignores the last digit I believe. 73 Bill G4WJS. ------------------------------------------------------------------------------ _______________________________________________ wsjt-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/wsjt-devel
