I don't know when it came back on or why.    I rely on the fine folks on the NDB list, some of which keep track of the comings and goings of various NDBs.   Since I have DT logged several times, it is not on my nightly "watch list" when I do post processing of my nightly recordings.

I just checked the DFW Sectional and Terminal Area Chart as well as the Enroute L-17 chart and DT 257 is not shown.   DT 257 is the LOM for the Runway 18 ILS/LOC approach.   It is on the ILS/LOC approach plate for Runway 18, but that is dated 31 Dec 2020.   That seems to be the latest approach procedure I can find for DTO Runway 18;  if that's true then the FAA should still maintain the DT LOM.   I checked the NOTAMS for DTO and nothing is listed for DT as U/S (unserviceable,  out of service...)

Usually, a good indication for an NDB (or LOM) to be decommissioned is for it to be removed from all charts.  Usually. 

We've seen NDBs get decommissioned suddenly without comment, as is happening more and more these days.   However, some are U/S  for a long time and they come back "from the dead".   Sometimes they don't.      At least NavCanada publishes its NAVAID decommissioning list;   the FAA doesn't do that.

73 Mark K3MSB







On Fri, Mar 3, 2023 at 8:20 AM <arc5@ix.netcom.com> wrote:
Thank you for that good information, Mark.
I've been by there many times but not lately, because it had been off the air for quite a while, but I hadn't checked it lately. I wonder when it first came back on the air?

Sent using myEarthLink

On Fri Mar 03 06:51:09 CST 2023 Mark K3MSB wrote:
Hi Dave

Cool!   Thank you for the info and sharing the photo and video!

DT 'Pinck" in Denton Texas was logged 14 times over the weekend of Feb 25-27 2022 as that was one of the NDB group's  weekend listening event that covered that frequency range.

The next logging was 4 Dec 2022 from St. Charles MO,  and now yours.

DT Is a tough catch here in the northeast;  I've only logged it 3 times since late 2021.

The last time I flew into Denton TX (back in the 1980's) I had the pleasure of seeing a pair of Lockheed Hudsons.   And of course the yearly Denton Airshow -- one of the last I was at had the Blue Angels in their A-4 Skyhawks.   Good memories all around.....

I'm going to share your post with the NDB Group.

73 Mark K3MSB





On Fri, Mar 3, 2023 at 7:21 AM David Stinson <

arc5@ix.netcom.com

> wrote:
NDB DT north of Denton, Texas, 257 KC, has risen from the dead.  I don't
know if lightening from the recent storms fused a circuit breaker or if
the Lich King's Scourge magic raised it as a zombie, but it's back after
being silent a long time.
Whatever happened, something hosed the keyer.
Instead of sending "Dah-di-dit, Dah" (DT),
it is sending "Dah-di-di-dah" (X).
Log it while you can.

https://photos.app.goo.gl/JwhECpkZMoF3RYEN9


https://photos.app.goo.gl/VQEjvAiWFFJv2oJg8






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