Need Help Buiding the project Linear FM 50Watt with BLY90.

[Hassan Khan]

I want to build this circuit http://www.electronics-lab.com/projects/rf/013/index.html
but I am confused ??? about inductors.
some one please write details about inductors used in this project.
and also want to know does this circuit works fine?
waiting for replies.
Thanks in advance.

 

[audioguru2]

The translation is horrible, isn't it?

The transistor is not available at the two largest electronic parts distributors in the USA so I think the circuit is very old and the transistor is not made any more.

The amplifier has a gain of only 5dB so it needs an input of about 15W to produce an output of 50W.

It is illegal to be your own radio station unless you live on Mars.

 

[SM2GXN]

This could be a better choice...
http://electroschematics.com/22/88-108-mhz-40w-wideband-power-amplifier-mrf171a/
Oh yes! It is illegal! Hopefully you know what you are doing.
If you build this amplifier, don't use it unless you are willing to lose some money or spend some time in jail 

I don't know about the regulations on Mars but if you live there just build it  ;D

 

[Hero999]

Don't forget to look at the datasheet for the transistor.
http://www.datasheetcatalog.org/datasheet/macom/MRF171A.pdf

It's probably designed for use in military radio equipment.