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Measuring a 100 w power amplifier at 6.78 MHz

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Friends,

I am gonna measure my 100 w PA at 6.78 MHz. Because I have not worked before with this much power, I need your help!
First, I wanna use spectrum analyzer and an attenuator to see output power. What kind of connector should I use? Is SMA ok?
Second, how can I produce a square wave to drive the PA (I need in input 1W power and 5 volt amplitude)? I don't want to make it! I wanna buy it! Is there any generator that is just for square wave?
 

What is the frequency rating of your amp?
Why do you want such a high frequency square-wave?
Yes, you could buy such a generator but it wouldn't be cheap.
 

crutschow said:
What is the frequency rating of your amp?
Why do you want such a high frequency square-wave?
Yes, you could buy such a generator but it wouldn't be cheap.
Click to expand...

Just single frequency. There is not any rating for it.
I need to drive my PA!!! It is working at 6.78 MHz!
Meybe I can find a used one!!! Do you know the name of something casual that others use?
Can I use SMA connector to connect the signal generator and spectrum analyzer to the PCB?
 

If your PA is broadband, you need to measure the performance at several frequencies. If it is a routine narrowband (e.g., like a radio transmitter), then you need only one frequency to measure.

I suggest use the same connection type as provided in your PA. I presume it will have same connector types for input and output. If the RF output is not properly terminated, you may expect serious problems. However, you do not need much power to do spectrum analysis and can safely divert a fraction of the output via a SMA connection. 6.78MHz falls in SW band range.

I do not know signal generators that can supply 1W power at 6.78MHz.
 

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