Peter Chadwick schrieb:
Hi Peter,
I have seen c. 120 MHz ringing at my own home made project.
Yes, the spectrum analyzer does not look all time at 120 MHz.
The analyzer is mostly free running but sometimes you get 'bingo',
a 'pip' in the range.
A grid dip meter (absorb. pos.) shows always every 'dah' energy
around the 120 MHz range.
May be interesting to know, my ringing starts at about 60% of the
keyed amplitude until the 'dah' stops (scope reading).
You see different amplitudes like from a personnel manager - hi.
73, Uwe, DL9NC
> Rich says:
>
> >At least two people have seen the 220's normal damped wave
> >ringing at 110MHz on a spectrum analyzer.
>
> How does one see that on a spectrum analyser? Because it's not a continuous
> signal in the time domain, it's not the thing to look for with a spectrum
> analyser.
>
> Remember too, that a spectrum analyser, given half a chance, will lie like a
> personnel manager!
>
> 73
>
> Peter G3RZP
>
>
>
> --
> FAQ on WWW: http://www.contesting.com/FAQ/amps
> Submissions: amps@contesting.com
> Administrative requests: amps-REQUEST@contesting.com
> Problems: owner-amps@contesting.com
>
--
FAQ on WWW: http://www.contesting.com/FAQ/amps
Submissions: amps@contesting.com
Administrative requests: amps-REQUEST@contesting.com
Problems: owner-amps@contesting.com
|