[Amps] Load Pulling

Tom Rauch w8ji at contesting.com
Thu Sep 13 07:07:09 EDT 2007


> Something doesn't make sense here. 1/20ns = 50 MHz, not 50 
> KHz!! The period of a 2 MHz carrier is 500ns, so with a 
> pulse width of 20ns, you are only transmitting a small 
> fraction
> (4%) of a single RF carrier cycle. That sounds more like a 
> sampling process than it does pulsed CW (as if you were 
> sampling a 2 MHz signal with a 50 MHz A/D converter).
>
> I just worked a 20 hour day, so I am too tired to think 
> about
> this anymore. Maybe tomorrow :-)

You're right. It is 50 MHz and that makes no sense with a 
2MHz carrier because there would be no carrier. There isn't 
much around needing a pulse that brief.

It's probably 20 uS, which is where I misplaced my zeros at 
without thinking. 20uS would allow a carrier.

73 Tom 




More information about the Amps mailing list