[TenTec] Corsair II DDS VFO

[Steve Hunt]

Perry,

I took a quick look this morning. I keyed the Corsair at 30wpm, fast 
QSK, and 100W output into a dummy load. I tried 50kHz and 200kHz 
frequency splits. I listened to the signal on a monitor receiver and 
viewed the RF output envelope on a scope.

I heard no sign of chirps or clicks. The output waveform looked perfect 
- no overshoot, and smooth 4-5mSec rise and fall times.

73,
Steve G3TXQ



On 21/03/2011 18:37, w8au at sssnet.com wrote:
> Steve:
> Do you use split operation on CW?  Curious to know if the DDS osc can handle
> the instantaneous shift of frequencies at a fast keying rate.  Obviously there
> is a delay compared to the External VFO that runs constantly, but is the
> shift noticeable either in a chirp, click or an "enabling delay" that shortens
> the dots?
>
> 73,&  TIA
> Perry  w8au
>
>