If you knew you had to send an ID with a packet, could you not reduce the 
amplitude of the whole data packet by a db or so and re-allocate that power to 
the CW ID? It certainly doesn't have to be loud, much like repeaters do 
id-under-voice. That way the FT8 signal taken by itself would still be constant 
envelope, and the CW id could be sent way down at FDial+100Hz. If the OOK 
nature of CW is the issue, you could always treat it as FSK using 1 Hz and 
100Hz. The 1Hz component would get chopped out in the radio, leaving the ID and 
FT8 signal.


--
David Tiller
Sr. Architect/Lead Consultant | CapTech
(804) 304-0638 | dtil...@captechconsulting.com



On Jul 5, 2017, at 5:29 PM, Richard Lamont <rich...@lamont.me.uk> wrote:

> On 05/07/17 22:10, David Tiller wrote:
> 
>> Any chance of having the CW id run concurrently with a data packet, perhaps 
>> at fDial + 100 Hz or so? It'd meet the id requirement without interfering 
>> with QSOs.
> 
> Doing it concurrently wouldn't be compatible with FT8 being a 'constant
> envelope' mode.
> 
> 73,
> Richard G4DYA
> 
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