Saber question
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Hello Jocko,
The Opt B+ is tied to the internal (ON/OFF)switched B+ (7.5Vdc from the battery.)
This voltage source is used in conjuction with an external accessory (i.e. Mike, Speaker, or Remote RF antenna Cable) that drops the voltage and returns it to the OPT SEL pin at the same accessory connector. This in effect tells the Saber which Mike, Speaker, or Antenna is being used(internal or external/PS Mike)and how to configure the internal electronic switching to accomplish this.
I am currently looking disecting a remote RF cable for the Saber and it appears to use just a precision resistor, and inductor to accomplish this. Also has a 10 Kohm resistor across the RF connector for some odd reason?
At first I thought I had some corrosion buildup or some other flaw internally producing this in my cable but found it is made that way.
I always thought a Zener Diode was involved in this Remote cable but not in this case.
This ones a Motorola Original too.
Eddie
N4UMJ
The Opt B+ is tied to the internal (ON/OFF)switched B+ (7.5Vdc from the battery.)
This voltage source is used in conjuction with an external accessory (i.e. Mike, Speaker, or Remote RF antenna Cable) that drops the voltage and returns it to the OPT SEL pin at the same accessory connector. This in effect tells the Saber which Mike, Speaker, or Antenna is being used(internal or external/PS Mike)and how to configure the internal electronic switching to accomplish this.
I am currently looking disecting a remote RF cable for the Saber and it appears to use just a precision resistor, and inductor to accomplish this. Also has a 10 Kohm resistor across the RF connector for some odd reason?
At first I thought I had some corrosion buildup or some other flaw internally producing this in my cable but found it is made that way.
I always thought a Zener Diode was involved in this Remote cable but not in this case.
This ones a Motorola Original too.
Eddie
N4UMJ