Odyssey:Magnavox Odyssey Antenna-Game Switch: Difference between revisions

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(Created page with "The Antenna-Game Switch is a mechanical TV RF switch box, similar to models produced for a range of first and second generation consoles. Its purpose was to allow the user to select either the Odyssey or regular television viewings, without having to disturb their antenna connections. 200px ==Operation== The rifle has a light sensor built in that responds when the barrel is lined up with a white light source, such as the square dot...")
 
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==Operation==
==Operation==


The rifle has a light sensor built in that responds when the barrel is lined up with a white light source, such as the square dot displayed by the console.  
The Game-Switch is connected to the main Odyssey console unit using the proprietary Game Cord. One end of the Game Cord is plugged into the Game Cord socket on the console, which the other end is plugged into the socket on the top of the Antenna-Game Switch marked Game Cord.  


The pump action which is used to reload the gun is under spring tension and sets a striker which is propelled against an obstacle upon shooting. This yields a mild recoil and an audible sound upon shooting. The trigger is made of solid metal, and all screws are held in place by metal nuts, allowing ease of access for repairs. Per Boojakascha, a light-dependent resistor is the heart of the lightgun, and its sensitivity can be adjusted by a potentiometer on the PCB. ([https://www.youtube.com/watch?v=At6H6SIfWTc&t=112s Link])
To output the console's video signal to the television, the Antenna-Game Switch has an output cable that feeds into two fork connectors. These fork connectors would connect to screw-style VHF 300 Terminals on the back of the television.  


At this time, Nintendo (then a toy company) was selling a line of light-sensitive 光線銃 SP (Kôsenjû SP) or "Ray Guns". The Magnavox gun uses the shell of one of these toys, and this partnership was Nintendo's first involvement in home video games. ([https://thegamescholar.com/2020/04/28/the-nintendo-odyssey/ Link)]
==Repairs==


==Games==
The most common damage to the Antenna-Game Switch is caused by rust, as the unit is made of metal. Additionally, the fork connectors are light and easily damaged.


The Odyssey light gun games revolve around using the console's square dot as a target. If the dot is shot, it disappears. Reloading the rifle will cause the target to re-appear. Similarly to the other Odyssey games, the player attaches an overlay to the television screen, as a substitute for graphics. The games modified the logic of the console, and two cards for light gun games were produced - #9 and #10.  
Fortunately, replacement fork terminals (also referred to as crimp spade connectors) are relatively easy to obtain, either uninsulated or insulated, [https://uk.rs-online.com/web/p/fork-terminals/2082521 as shown below].  


* Prehistoric Safari ''(Game Card #9)''
The model of fork connectors shown below are "M3", which means that they will fit securely to an M3-sized screw. (Link > [https://www.fastenermart.com/understanding-metric-fasteners.html Detailed Explanation of Metric Fasteners]).


Player 2 moves the target into a dinosaur on the overlay. Player 1 attempts to shoot the target and the number of hits is counted. After each shot, Player 2 moves the target to another dinosaur. This process is repeated a total of 15 shots, then the players' roles are reversed.  
[[File:Insulated M3 fork connectors .jpg|200px]]


* Dogfight! ''(Game Card #9)''
When selecting a fork connector, the user should also consider the gauge of the cable.  
This game takes place during World War 1. Player 2 steers a target (representing the Red Baron) along a dashed line on the overlay. Player 1 tried to hit the target in order to score a point. Player 2 then carries on flying along the track. After completion, the players' roles are reversed.


* Shootout! ''(Game Card #9)''
The cables which need to be soldered to the fork connectors are approximately 3.13mm, and 1.56mm when the cable insulation is stripped back (see below).  
Player 1 takes the role of the sheriff (with the rifle). Player 2 is the Dalton Gang.  Player 2 positions his light in the first floor windows of Charley's saloon where he makes his way down the length of the entire block.  He must remain in each window and doorway for the time it takes him to say, "You'll never get me, Sheriff!" 


When player 2 gets to the end of the block, he runs across the street via a horse and carriage to the house at the top right of the overlay and makes his way through windows and saloon doors, leaping from rooftop into the wagon then back into the saloon to waiting horses for the getaway. The player control unit is then traded for the rifle.  The procedure is repeated.  The winner is the sheriff who gets the most men in the Dalton Gang.
[[File:Switchbox cable 1.jpg|200px]]
[[File:Switchbox cable 2.jpg|200px]]
 
 
Additionally, the VHF Antenna connection on the bottom of the unit may become rusted and damaged over time. This can be replaced by a "Straight 75Ω RF Adapter Type F Socket to Type F Socket 1GHz". The replacement would need to be threaded through the hole in the bottom of the switch box, and may need to be soldered into place to remain securely.  
 
[[File:Rf adapters for Odyssey switch box.jpg|200px]]


* Shooting Gallery ''(Game Card #10)''
This is the only Odyssey light gun game that can be played in a "single player mode". The two player dots are replaced at each end of the screen while the ball is travelling between them. the player tries to shoot the targets as they move 10 times back and forth.


== Links ==
== Links ==


* [https://thegamescholar.com/2020/04/28/the-nintendo-odyssey/ THE NINTENDO ODYSSEY (From Old School Gamer Magazine – January 2018) ]
* [https://uk.rs-online.com/web/p/fork-terminals/2082521/(RS PRO Insulated Crimp Spade Connector, 1.5mm² to 2.5mm², 16AWG to 14AWG, 3.2mm Stud Size Vinyl, Blue) ]
* [https://www.youtube.com/watch?v=wv_Y_jaT3xY OdysseyNow - Let's Play: Shooting Gallery (Magnavox Odyssey 1972)]
* [https://uk.rs-online.com/web/p/coaxial-adapters/5462728 Straight 75Ω RF Adapter Type F Socket to Type F Socket 1GHz]
* [https://www.youtube.com/watch?v=At6H6SIfWTc&t=112s Boojakascha - Light Gun Reviews 59: Shooting Gallery Targets (Magnavox Odyssey)]


[[Category:Magnavox Odyssey]]
[[Category:Magnavox Odyssey]]

Revision as of 14:02, 28 April 2022

The Antenna-Game Switch is a mechanical TV RF switch box, similar to models produced for a range of first and second generation consoles. Its purpose was to allow the user to select either the Odyssey or regular television viewings, without having to disturb their antenna connections.

RF switchbox odyssey.jpg

Operation

The Game-Switch is connected to the main Odyssey console unit using the proprietary Game Cord. One end of the Game Cord is plugged into the Game Cord socket on the console, which the other end is plugged into the socket on the top of the Antenna-Game Switch marked Game Cord.

To output the console's video signal to the television, the Antenna-Game Switch has an output cable that feeds into two fork connectors. These fork connectors would connect to screw-style VHF 300 Terminals on the back of the television.

Repairs

The most common damage to the Antenna-Game Switch is caused by rust, as the unit is made of metal. Additionally, the fork connectors are light and easily damaged.

Fortunately, replacement fork terminals (also referred to as crimp spade connectors) are relatively easy to obtain, either uninsulated or insulated, as shown below.

The model of fork connectors shown below are "M3", which means that they will fit securely to an M3-sized screw. (Link > Detailed Explanation of Metric Fasteners).

Insulated M3 fork connectors .jpg

When selecting a fork connector, the user should also consider the gauge of the cable.

The cables which need to be soldered to the fork connectors are approximately 3.13mm, and 1.56mm when the cable insulation is stripped back (see below).

Switchbox cable 1.jpg Switchbox cable 2.jpg


Additionally, the VHF Antenna connection on the bottom of the unit may become rusted and damaged over time. This can be replaced by a "Straight 75Ω RF Adapter Type F Socket to Type F Socket 1GHz". The replacement would need to be threaded through the hole in the bottom of the switch box, and may need to be soldered into place to remain securely.

Rf adapters for Odyssey switch box.jpg


Links