[K3CAL] Any oscope and signal analysis experts?

WA4PRR wa4prr at comcast.net
Sat May 14 14:56:06 EDT 2016


If you have an ARRL Handbook, I think there is a simple tone generator in there for testing amplifiers.  
Be sure to get a dummy load that will handle the power you are running.  Hamfests coming up!  73,  

Ron / WA4PRR - Sent from my iPad

> On May 14, 2016, at 2:34 PM, David Metler <halltrailfab at gmail.com> wrote:
> 
> OK thanks. .yeah. .I need to pick up a dummy load
> 
>> On May 14, 2016 2:30 PM, "WA4PRR" <wa4prr at comcast.net> wrote:
>> Looks pretty good.  If you have a tone generator, you can get a better display of the peaks and valleys.  Some guys whistle a tone, but I wouldn't do too much of that on an antenna.
>> 73,
>> Ron / WA4PRR - Sent from my iPad
>> 
>>> On May 14, 2016, at 1:49 PM, David Metler <halltrailfab at gmail.com> wrote:
>>> 
>>> Pic didn't attach
>>> 
>>>> On May 14, 2016 1:48 PM, "David Metler" <halltrailfab at gmail.com> wrote:
>>>> I have gotten great reports on my audio with amplifier...but as a learning exercise...I connected my oscope to my rf output to see what my signal looked like..in some cases with no amplifier..it looks like my audio flat tops.  But I don't know how to correct that with my ftdx 3000.  Here is a video of the audio sampled with amplifier putting out  600 watts.  And a freeze Fram pic that does look good.
>>>> 
>>>> One thing that I'm not sure about is if I have my oscope settings correct...as I really have know idea what I'm doing lol.  Hopefully you can see some of the settings in the freeze frame. I'm connected to an unused antenna output (antenna #2)on an ameritron atr 30 tuner and transmiting on antenna 1.  Basically just using the coupling effect to sample the rf..with out  having to make or buy an rf sampler.
>>>> 
>>>> What do you all think?
>>>> 
>>>> https://youtu.be/BP3sy4dx6oM
>>>> 
>>> <Screenshot_2016-05-14-13-36-32.png>
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