Chassis and monitoring arrangement for electrical apparatus

Claim 2

Electrical apparatus including in combination, a frame structure having mounting means thereon, a plurality of substantially flat electrical circuit boards extending in substantially parallel planes supported by said frame structure and having portions secured to said mounting means, one of said circuit boards being a control circuit board having edge portions with connecting means thereon, a plurality of the other of said circuit boards having edge portions adjacent to said edge portions of said control circuit board and having connecting means for engagement with said connecting means on said control circuit board, and connector means on a plurality of said circuit boards for making connections to the circuit thereon, said connector means on said control circuit board being connected to apply control signals thereto and said connector means on said other circuit boards being connected to monitor signals appearing in the circuits thereof.

Claim 3

Electrical apparatus in accordance with claim 1 wherein said circuit boards include insulating boards with conductors thereon and electrical components supported thereby, with said edge portions of said other circuit boards overlying said edge portions of said control circuit board.

Claim 4

Electrical apparatus in accordance with claim 1 wherein said connecting means on said circuit boards are formed by conducting pins on one circuit board and engaging spring clips on another circuit board.

Claim 5

Electrical apparatus in accordance with claim 1 wherein each of said connector means is formed by a socket mounted on the associated circuit board and having a plurality of contacts connected to the circuit thereof, each of said sockets being adapted to receive a multiple contact plug connected to a test instrument.

Claim 6

Radio apparatus including in combination, a frame structure adapted to be mounted in a vehicle and having mounting means thereon, a plurality of electrical circuit boards having components thereon supported by said frame structure and having portions secured to said mounting means, said circuit boards being mounted to provide access to said components while secured to said mounting means and to be removed from said frame structure without removing the same from the vehicle, one of said circuit boards being a control circuit board having electrical connecting means thereon, a second circuit board forming at least a part of a radio receiver and a third circuit board forming at least a part of a radio transmitter, said second and third circuit boards having portions adjacent to portions of said control circuit board and having electrical connecting means in engagement with said connecting means on said control circuit board, and connectors on said control circuit board And on said second and third circuit boards for making connections to the circuits thereon, said connectors on said circuit boards facilitating the connection to the circuits thereof for monitoring signals appearing in such circuits to thereby facilitate adjustment of said components on said circuit boards.

Claim 7

Radio apparatus including in combination, a frame structure adapted to be mounted in a vehicle and having mounting means thereon, a plurality of electrical circuit boards having components thereon supported by said frame structure and having portions secured to said mounting means, said circuit boards being mounted to provide access to said components while secured to said mounting means and to be removed from said frame structure without removing the same from the vehicle, one of said circuit boards being a control circuit board having electrical connecting means thereon, a second circuit board forming at least a part of a radio receiver and a third circuit board forming at least a part of a radio transmitter, said second and third circuit boards having portions adjacent to portions of said control circuit board and having electrical connecting means in engagement with said connecting means on said control circuit board, and connectors on said control circuit board And on said second and third circuit boards for making connections to the circuits thereon, said connectors on said circuit boards facilitating the connection to the circuits thereof for monitoring signals appearing in such circuits to thereby facilitate adjustment of said components on said circuit boards.

Claim 8

Radio apparatus in accordance with claim 5 wherein said first and second circuit boards contain radio receiver and radio transmitter circuits, respectively, and extend in a plane which is substantially parallel to the plane of said control circuit boards and have portions overlying portions of said control circuit boards, and said electrical connecting means of said first and second circuit boards each include a plurality of pins and said electrical connecting means on said control circuit board include spring clips for receiving said pins.

Claim 9

Radio apparatus in accordance with claim 5 wherein said connector on said control circuit board is connected to circuits thereon for applying signals through said connecting means to the circuits on said first and second circuit boards.

Claim 10

Radio apparatus in accordance with claim 7 including a main connector connected to said control circuit board for making a connection to external circuits, and connections extending from said main connector through said control circuit board and said connecting means to said first and second circuit boards.

Claim 11

Radio apparatus in accordance with claim 5 further including a front housing secured to said frame structure, antenna switch means within said front housing having a connector accessible for connecting an antenna thereto, and circuit means connecting said antenna switch means to said first and second circuit boards.

Claim 12

Radio apparatus in accordance with claim 9 wherein said circuit means connecting said antenna switch means to said radio transmitter circuit board includes a harmonic filter and a power control circuit board.

Claim 13

Radio apparatus in accordance with claim 10, wherein said power control board includes electrical connecting means for engagement with electrical connecting means on said control circuit board, and a connector for making connections to the circuits on said power circuit control board for monitoring signals therein.