Re: [IRCA] "Decoding" AM Authorizations

[Dennis Gibson <wb6tnb@xxxxxxxxx>]

You've got the right idea. The first number is day power and the second is night power. ND is nondirectional. DA-1 is the same pattern day and night. DA-2 is different patterns day and night. DA-3 is different patterns day, night and critical hours. The most common directional is DA-2.

Sent from my iPhone

> On Mar 3, 2016, at 5:08 PM, Les Rayburn <les@xxxxxxxxxxxxxxxx> wrote:
> 
> Forgive me fellow DXâers, for I have sinned. Despite AM DXing for several years now, I confess that Iâve never quite learned how to decipher the FCC databaseâs designations for AM authorizations. 
> 
> For instance, tonight iâm listening to 1550 AM a lot. I notice that WAZX 1550 in Smyrna, GA is authorized to run 50000w/16w DA-2B. Now I know this vaguely means that they can run 50,000 watts in the daytime, but only 16 watts at night. But I have no real idea what âDA-2 Bâ refers to. 
> 
> Meanwhile, KCOM 1550 in Comanche, TX is authorized to run 250w/54w ND D. Say what? Iâll take a stab that means 250 watts in the daytime, and 54 watts at night. Non-directional? 
> 
> I know this stuff is important. But Iâve been using the hunt and peck method of DXing for years. Not targeting stations as Iâm doing now, so itâs becoming more important. 
> 
> Is there a âFCC Lingo for Dummiesâ guide on the web somewhere? Can someone post some Cliff Notes? 
> 
> 
> 
> 
> 
> 73,
> 
> Les Rayburn, N1LF
> 121 Mayfair Park
> Maylene, AL 
> EM63nf
> 
> Member WTFDA, IRCA, NRC. Former CPC Chairman for NRC & IRCA. 
> 
> Elad FDM-S2 SDR, AirSpy SDR, Quantum Phaser, Wellbrook ALA1530 Loop, Wellbrook Flag, Clifton Labs Active Whip. 
> 
> 
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