Re: LF: FET driver driven direct from a Si5351a questions

[Chris Wilson <dead.fets@gmail.com>]

Hello David,

Thanks  for  the reply. I will try this I take it you just tie Input A
and  Input  B together and feed it a x2 signal with X2 tone spacing if
using  WSPR?  I  am  pretty  sure  there's  either  harmonics or another
frequency  riding on CLK1 when in this new Iv mode so I am moving away
from  that as you suggest.  I now have a refreshed set up whereby I am
able  to use the TS-590 for sensible TX operation of JT-9 with either the
Red  Pitaya  or  the  590  as  the  receiver.  So  when the LF antenna is
operational at your end I should be able to work you :)

Thursday, October 11, 2018, 9:36:03 PM, you wrote:

> Hi Chris.
> Not sure I have a solution for the circuit you have.  

> However, it may be worth not using the 180 degree outputs from the
> Silab oscillator.  Have you thought about the advantages of a FET driver
> that has a common input but 2 antiphase outputs ??
> The TC4428 is an example. They take great care with rise times and
> propagation delays....perhaps the Si device does not give 'perfect' waveforms.


> Worth a try ??


> regards


> David




-- 
Best regards,
 Chris                            mailto:dead.fets@gmail.com