Concept:
Jumper the antenna switch to allow the transmitter power amplifier to be connected directly to the antenna jack in mobile MICORs converted to repeater stations.

Description:
The unmodified antenna switch poses a potential for failure, and is not needed in units that are converted for repeater service.

Benefit:
Retain the convenience of original antenna connector, and provide reliability.

Modification:
Remove the screws securing the antenna switch to the transmitter chassis. Unplug the wire from the power control board from the antenna switch. minding which socket it was in. Unplug and discard wires going to the electromagnet coil. Pull the clip holding the electromagnet coil assembly and discard the electromagnet.

Drill out the rivet holding the two sides of the switch together. Remove the two glass reed switches and permanent magnet. Jumper the transmit connector, marked with a "T" on the one side of the switch casting near the phono connector, to the antenna connector with an insulated wire of the correct length. Leave the other connector unconnected.

Reassemble the antenna switch using a "self tapping screw" of the correct size. Plug the wire from the amplifier output (power control board) back into the transmit connector. Reinstall the jumped antenna switch.
 
 
 
 

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