Reddit reviews Fancasee (2 Pack Gold Plated) 75 Ohm to 300 Ohm UHF/VHF/FM Matching Transformer Converter Adapter with F Type Female Coax Coaxial Connector Plug Jack for Cable Wire Antenna TV
We found 3 Reddit comments about Fancasee (2 Pack Gold Plated) 75 Ohm to 300 Ohm UHF/VHF/FM Matching Transformer Converter Adapter with F Type Female Coax Coaxial Connector Plug Jack for Cable Wire Antenna TV. Here are the top ones, ranked by their Reddit score.
Excellently transform 75 ohm coaxial connector cable wire to 300 ohm twin lead.Screw-threaded F-type female connector jack match male connector plug cable wire antenna.Supports HF UHF VHF FM TV antenna etc.Well-made gold plated 75 ohm to 300 ohm matching transformer converter adapter.Package contents: Pack of 2 UHF/VHF/FM Matching Transformer.
Your problem is that the N64 isn't displaying an image. The N64 won't boot if the jumper pack/expansion pack is missing, broken, or not seated properly. This will look like static on channel 3 because the N64 won't come on.
If the N64 displays an image on another device but not this one, then it's probably that this TV is not tuning properly. If it has a 300 ohm twin-lead connection on the back, you could try to get a 300 ohm to 75 ohm adapter and see if using that connection works. Sometimes, it's just that the physical connection is broken, and the type F connector that we use for 75 ohm cable is not as resilient as the 300 ohm twin lead cable.
If you have another TV in the house - including a HDTV - you could try your RF modulator setup on it and see what you need to rule out. Also don't forget that RF modulators require power, so if you've not powered it, it won't work.
Get something like this https://www.amazon.com/Fancasee-Matching-Transformer-Converter-Connector/dp/B07BW9YS4Q/ref=sr_1_3?keywords=coaxial+to+vhf&qid=1556680734&s=gateway&sr=8-3
To screw on the VHF antenna ports
The spade terminals up on the top left are the inputs, you'd need an RF balun like this https://www.amazon.com/Fancasee-Matching-Transformer-Converter-Connector/dp/B07BW9YS4Q/ref=sr_1_1_sspa?ie=UTF8&qid=1538360340&sr=8-1-spons&keywords=300+75+antenna&psc=1 connect the spade terminals to the VHF screws on the TV, the F connector to RF out of a tuner box.