[Milsurplus] Lighthouse radio beacons of the past

[David Stinson]

Stinson's Law of Technological Progress:
"Old systems that work well will be replaced
  by new systems that don't."

On 12/6/2021 6:46 PM, B. Smith wrote:
>  The demise of the majority of the NDB's have been  actually a kind of 
> waste. It was a simple system and allowed a small airport on a limited 
> budget to have an instrument approach that allowed aircraft to fly 
> down to  a low visibility and ceiling such as 500 feet and 1 mile 
> visibility - no it did not allow you to legally fly down to 200 feet 
> and 1/2  mile (RVR2400) but if you fly take a look in your log book 
> and see what the weather was for most of your approaches. The NDB 
> approach did not  utilize satellites  and used simple equipment on the 
> aircraft and on the ground.  The NDB ground antenna was often just a 
> simple tower or single telephone pole  antenna.  Maintenance for the 
> transmitter was minimal and the antenna did not require any phasing. 
> And the best part was it worked in heavy rain and heavy snow  fall.  
> The NDB system has joined  Loran C in the technical grave yard where 
> we often put stuff that actually works and is reliable.
> k4che
>
>

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