How do you probe amplifier outputs...

[nomadradio]

A resistor in series with that 10pf cap will extend the upper power limit. It's a compromise. Make the resistance too high and bareftoot radios won't produce decent output to the 'scope. Too low and you roast the diodes. This is probably the only application where I would recommend a carbon-composition resistor.

73

 

[doffo]

A resistor in series with that 10pf cap will extend the upper power limit. It's a compromise. Make the resistance too high and bareftoot radios won't produce decent output to the 'scope. Too low and you roast the diodes. This is probably the only application where I would recommend a carbon-composition resistor.

73

Mr. NomadRadio has spoken...

 

[Cable Guy]

A resistor in series with that 10pf cap will extend the upper power limit. It's a compromise. Make the resistance too high and bareftoot radios won't produce decent output to the 'scope. Too low and you roast the diodes. This is probably the only application where I would recommend a carbon-composition resistor.

73

A resistor array switch could be added for variable power ranges right?

 

[AudioShockwav]

Mr. NomadRadio has spoken...

Chris has been doing this for a long time.

73
Jeff

 

[doffo]

View attachment 75470
Chris has been doing this for a long time.

73
Jeff

I didn't know he has been doing it for that long! Seasoned veteran in radios. Much respect to him. I wasnt even brought into this world until 11 years later lol.

 

[TM86]

View attachment 75470
Chris has been doing this for a long time.

73
Jeff

Which is why we should be learning as much from him as we can. 50 years is a LOT of experience.