100 mhz scope question

[543_Dallas]

I did the same, but inside my watt meter. I only ran a grounded U fairly close to the antenna wire. It picks up milliwatts to well over a KW

I had originally grounded the other end of the coil but it was picking up noise from the amplifier. Maybe from the blower motor being a 120 volt and connected to chassis ground.

 

[kaos513]

I did the same, but inside my watt meter. I only ran a grounded U fairly close to the antenna wire. It picks up milliwatts to well over a KW

What kind of watt meter you have ?

 

[543_Dallas]

I put a pickup in the remote line section of an ameritron awm35 watt meter. Also installed one in an rf limited low pass filter. One less jumper.

 

[kaos513]

I put a pickup in the remote line section of an ameritron awm35 watt meter. Also installed one in an rf limited low pass filter. One less jumper.

thanks

 

[JoeDirt]

What kind of watt meter you have ?

Not as accurate as a bird when you're dealing with high reflect, they are well built and I dont have to change slugs.

 

[JoeDirt]

I had originally grounded the other end of the coil but it was picking up noise from the amplifier. Maybe from the blower motor being a 120 volt and connected to chassis ground.

With AC there is always the possibility of a small about current on the neutral/ground.

 

[dave457]

If all you want to do is look at modulation it doesn't have to be complicated. The blue wire wrapped around the output of my amplifier is connected to a bnc connector on the back of the amp. That connects straight to the scope. Works from less than 1 watt to kilowatts. Also a good way to mount a bird line section to your amp and save a jumper.

View attachment 22781

This is slick... Very easy and works great