[Lowfer] A question about NDBs

[mikea]

On Mon, Dec 03, 2007 at 10:14:16PM -0500, Dave Maples wrote:
> All: Time for some very ignorant questions:
> 
> In the long ago, I used to listen to NDBs on an old BC-348 receiver.  All
> the NDBs used ~1000-Hz MCW on an AM carrier.  Recently I have begun tuning
> through LW again, and now I find both the MCW beacons and other beacons that
> ID in straight CW, and then hold a carrier for a bit, then repeat.
> 
> 1. Since both types of NDBs seem to be aeronautical, I'm puzzled as to how
> many ADF installations can deal with the non-MCW beacons.  Do they now
> contain BFOs?
> 
> 2. When did this type of beacon start deploying?

Got some freqs for the CW beacons, Dave? I'm interested in this, as I 
haven't seen any down in BDB territory here in central Oklahoma. 

-- 
Mike Andrews, W5EGO
mikea at mikea.ath.cx
Tired old sysadmin