[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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