[Milsurplus] ADF today

[Robert Nickels]

On 4/24/2020 5:18 PM, Mark K3MSB wrote:
> A group of hams operating a navigation aid for fun?   That would work 
> until the first aircraft crashes because the NDB calibration was only 
> to "Ham Standards".......

Of course I wasn't suggesting they be maintained for navigation 
purposes, as that is why FAA is phasing them out and those approaches 
will no longer be legal after that happens.

As I stated, amateurs could operate them for hobby/experimental purposes 
ranging from simple NDB DXing as we do today to more advanced digital 
modes.   For example, wspr beacons on 630 meters have been copied all 
over the globe using the present 5 watt EIRP power limit, so even the 
most common 25 watt NDB transmitters could be reduced in power and still 
have interesting potential.

The options are to watch in silence as LF NDBs disappear or come up with 
an alternative that could be proposed to repurpose them. I've presented one.

73, Bob W9RAN