How much value is needed to block RF signals!?

[aj_silverthunder]

what value of inductive reactance is needed to block 80Mhz signal from the power supply! here is a circuit for reference " https://www.flickr.com/photos/aj_silverthunder/4140932373/ ".
is 50K inductive reactance of the choke is able to block the 80Mhz signal fron the power supply in the given schematic!

 

[FvM]

How much attenuation (in dB) can be regarded as "blocking" in your opinion? Why?
Did you check which reactance amount can be achieved with available components (e.g. by reading a datasheet)?

 

[aj_silverthunder]

my doubt is that i want to calculate the value of the choke which can block 80Mhz RF signals from entering to the other circuit with a help of the formula!.like this " https://www.flickr.com/photos/aj_silverthunder/4140932373/ ".
so i need all u r help guys!

 

[FvM]

Yes, but you didn't specify how much "blocking" would be required. I guess, you didn't even think about, if a choke is required at all,
if the existing series resistor can provide sufficient attenuation of RF, or if and why a certain RF level can be expected as problematic
for the circuit. You actually know very little about the said circuit.

50k inductive reactance at 80 MHz is ridiculous...