Decrease the waves

[Diyermaker]

Hi, I have a pretty powerful fm transmitter. Luckily that whole “number” is not in use. Still I have a question can you weaken fm frequencies? I don’t think it is possible since the waves are so big, I don’t know

 

[jchuchla]

You can use an RF attenuator on the line between the transmitter and the antenna.

https://www.jfwindustries.com/produ...tors/50-ohm-fixed-attenuators-0-5-to-2-watts/

 

[Cmndr Brain]

I built my own PI-Network attenuator built to my own specs. Works great. But, I had most of the parts already. Here's a link to the discussion on this forum.
http://doityourselfchristmas.com/forums/showthread.php?53545-For-the-FM-transmitter-techs-Attenuators

 

[Diyermaker]

Thanks! I will try to do the math.

 

[Cmndr Brain]

Thanks! I will try to do the math.

Check post #6 in the forum link. There's a calculator that will help.

 

[aknflyer]

It is good to stay "close to legal". I have been assigned to a FCC contract investigating interference here in Alaska. Cant wait to see the Suburban with all the gear. Would be interesting to check real world levels on the equipment I have used.