Help clearing up Famicom image

[goemon_guy]

I recently bought an original Famicom off eBay, but of course, the picture looks like trash for the most part, unless I fiddle with the RF cable enough.

Basically, what I found was that getting a RCA female to Coaxial (F-type) male adapter, and an RCA cable would yield a significantly better picture.

Could anyone point me in the right direction as to what RCA cable I'd need for this?

I believe the RCA to Coaxial adapter I'd need is this, but I'd like to know exactly what it is I'd need to buy before wasting my money.

 

[ScarletDreamz]

You can also do F RCA to M Coaxial.

I did that mod to my Atari, and it works great.