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Does anyone know the resistance range for the cadmium sulfide (CdS) photoresistor in the Bendix/King KN-64 DME unit?

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    $\begingroup$ What's a CdS? Maybe provide a link on a schematic, or something... $\endgroup$ – kebs May 3 at 16:37
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    $\begingroup$ CdS is cadmium sulfide, one of two common types of photoresistor. $\endgroup$ – stretch May 4 at 13:00
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    $\begingroup$ If that can help: CdS LDR have a resistance about 1-10+ MΩ at 0 lx, and 1-100kΩ at 10 lx. Example. Note cadmium use is restricted (RoHS). You would have a better answer on EE.SE $\endgroup$ – mins May 4 at 19:49
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According to http://www.flymafc.com/docs/manuals/king-KN62_KN62A_KN64.pdf, The Maximum Sensor Range for the Bendix King KN-64 DME is determined by altitude and ground station output power and sensitivity. Under normal circumstances, the KN-64 DME has a maximum display range of 389 Nautical Miles, as shown below: Bendix King KN-64 DME Range Specifications.

The Change in Accuracy of the KN-64 DME change from .1 Nautical Miles or .14 Nautical Miles from 0 to 99.9 Nautical Miles, as shown below, along with Sensitivity:

Bendix King KN-64 DME Range Accuracy Specifications and Subject Change Calculations.

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    $\begingroup$ Hi @Wasabi - isn't the OP asking for the electrical resistance range - not the "system perofrmance"?? $\endgroup$ – Mr R May 4 at 5:01

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