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Family Computer => Technical & Repair Assistance => Topic started by: azaza1 on July 09, 2017, 02:05:52 am

Title: RF switch cable
Post by: azaza1 on July 09, 2017, 02:05:52 am
Hello.

Two questions:
1. Which cable uses the RF switch?
RG59/U
RG59A/U
RG59B/U
RG6/U
RG6/UQ
RG-7

(http://i.imgur.com/TzpopRO.jpg)

2. What name of this adapter?

(http://i.imgur.com/OevL2ii.jpg)
Title: Re: RF switch cable
Post by: Great Hierophant on July 09, 2017, 12:09:09 pm
The end of the official NES RF adapter is just bare wire with the sheath pulled back.  Japanese RF terminals used to use use a screw and clamp mechanism, as shown on the RF switch.  The wire is wrapped around a screw and a clamp holds the cable in place by the ground shielding wire.  Later TVs should offer a coaxial screw. 

The connector on the end of it as shown in the second photo is merely an F-type or right angle coaxial adapter.  They can be confused with a matching 300 to 75 Ohm Balun transformer. 
Title: Re: RF switch cable
Post by: azaza1 on July 09, 2017, 10:04:42 pm
Quote from: Great Hierophant on July 09, 2017, 12:09:09 pm
Japanese RF terminals used to use use a screw and clamp mechanism, as shown on the RF switch.  


Maybe not always? Nut F-Type Male Connector have fixed dimensions and thickness for each size. What size on this picture?

(http://i.imgur.com/8IDxIZn.jpg)

Quote from: Great Hierophant on July 09, 2017, 12:09:09 pm
The connector on the end of it as shown in the second photo is merely an F-type or right angle coaxial adapter.  They can be confused with a matching 300 to 75 Ohm Balun transformer.  

F-type have a screw-thread. On the photo inside walls are smooth. It means it is not a F-type connector?
Title: Re: RF switch cable
Post by: Great Hierophant on July 10, 2017, 10:46:38 am
The connector in the photo looks like something placed on it after the fact. 

Those right angle connectors, whether with or without the balun/inductor, seem to be push on rather than screw in.  I'm not sure if that makes them a Type F or not.