We seek to understand and document all radio transmissions, legal and otherwise, as part of the radio listening hobby. We do not encourage any radio operations contrary to regulations. Always consult with the appropriate authorities if you have questions concerning what is permissible in your locale.

Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.


Messages - MegatonRange

Pages: [1] 2 3 4 5
1
Other / Re: UNID CW 4251 0304 UTC 14 FEB 2024
« on: February 14, 2024, 1443 UTC »
Call sign NJDM is assigned to the USS Jason Dunham.

2
Other / Re: UNID CW 4251 0304 UTC 14 FEB 2024
« on: February 14, 2024, 1406 UTC »
Loud & clear in southcentral Kentucky today at 1400 UTC.

3
Utility / Re: SHARES North Net 6965 USB 0053 UTC 10 November 2023
« on: November 21, 2023, 0013 UTC »
This is a FEMA network. Net control is NNA5HF.

I tuned in to casual conversation about property drainage before officially seeking check-ins, then having heard a few, then sent digital traffic. Some traffic or other digital transmissions followed. After the initial flurry of activity, there was a lot of dead air (several minutes at a time) between net control transmissions and I did not stay with it.

Recording, including digital traffic: https://voca.ro/146vc7jT8ims

More info on SHARES: https://www.cisa.gov/resources-tools/programs/shared-resources-shares-high-frequency-hf-radio-program

Heard on the K1VL SDR in Vermont, USA.
---
SHARES is actually a NCC (National Coordinating Center for Communications) program, not a FEMA net, although some FEMA stations do participate. The frequency should also be 6765.0, not 6965.0 & the digital mode heard is MT63-1KL.

4
Utility / Re: USCG 14950 USB 1942 UTC 13 OCT 2023
« on: November 02, 2023, 0247 UTC »
I had USCG cutter Tahoma working COMMCOM on 14950.2 USB a few days ago.

5
Utility / Re: UNID 14950 USB 1942 UTC 13 OCT 2023
« on: October 27, 2023, 1345 UTC »
UNID 14950.0 kHz USB 19:42 UTC 13 OCT 2023

19:42 UTC - ? 617 calling ? for radio check; (weak barely readable)
19:43 UTC - ? 617 calling ? for radio check; (weak barely readable)
19:44 UTC - ? 617 calling ? for radio check; (weak barely readable)
19:45 UTC - Short burst of ANDVT;
19:45 UTC - ANDVT traffic;
19:48 UTC - Short burst of ANDVT;  (nothing else heard)

---
The actual frequency is 14950.2 (USB) & it's the US Coast Guard.

6
ABCP calls for January 25th were DOOR SILL & NAIL HOB.

7
Utility / Re: UNID 6910 USB 1625 UTC 24 AUG 2022
« on: December 31, 2022, 0322 UTC »
6910.0 is used by both US Army MARS (USB voice, ALE & 110A encrypted data) & the NCC SHARES program (USB voice, Olivia & MT63-1KL data).

8
Utility / Re: UNID 16011 USB ALE Net 1524 UTC 14 DEC 2022
« on: December 28, 2022, 0240 UTC »
I've only ever heard the growl come from airborne units tuning up. Sounds (pun intended) like they're testing interagency linking presumably for continuity of government in case of the Pocalypse.
---
61ZB7 is always an Airborne Command Post. Whether it's an E-4B or E-6B, I haven't a clue.

This is the FEMA DACN (Department & Agency Continuity  Network) & it's active in the third week of each month when the first week starts no later than a Tuesday. In December, the net kicked off a week early, presumably because of the holidays. In January of 2023, exercise dates should be on the 18th & 19th.

9
Utility / Re: UNID 16011 USB ALE Net 1524 UTC 14 DEC 2022
« on: December 27, 2022, 1653 UTC »
Notes: (1) An interesting observation. I can hear who I believe is 1BGQY and 61ZB7's antenna tuner tune up prior to transmission. This is odd as ALE stations should be using fast tune antenna tuner units (ATU) with memory. Sounds like a Collins ATU. (2) Thus far, no analogue traffic has been observed on this net.
---
61ZB7 is a STRATCOM Airborne Command Post. The same tune up "growl" can be heard on the HFGCS.

Clear voice transmissions are rare, but have been heard. In those instances, tactical call signs have been used, however, in the last clear voice I heard, the ALE address was used as the call.

10
Utility / Re: Mars Net? 7302
« on: November 16, 2022, 0336 UTC »
USAF MARS net.

11
22 Meter Band HiFER Beacons / Re: KAH
« on: September 29, 2022, 1435 UTC »
13566.036 beacon KAH. Good signal into southcentral KY. 1428 UTC 09/29/2022.

Wellbrook ALA1530LNP NA Loop
RFSpace CloudSDR

12
Utility / Re: Test EAMs on 7000 USB in the ham band
« on: September 03, 2022, 2254 UTC »
Not sure if this is an intentional frequency, but I've caught several test EAMs on 7000 USB the past few days. 
-----
That was a US Navy station participating in a quarterly exercise.

13
Utility / Re: Unid Mil? 6990 LSB 2350 utc 11 May 2022
« on: May 12, 2022, 0210 UTC »

Over modulated (here) OM/YL giving phonetic terms (Oscar, Foxtrot) for stretches of time.  Pauses and starts again.  Can not decipher most of words spoken.
-----
That was a USB signal from a USN station on 6988.0 with a exercise EAM.

Are these typical USN EAM frequencies? I'm not familiar with them.
-----
No, they're just used in specific exercises.

14
Utility / Re: Unid Mil? 6990 LSB 2350 utc 11 May 2022
« on: May 12, 2022, 0025 UTC »

Over modulated (here) OM/YL giving phonetic terms (Oscar, Foxtrot) for stretches of time.  Pauses and starts again.  Can not decipher most of words spoken.
-----
That was a USB signal from a USN station on 6988.0 with a exercise EAM.

15
HF Mystery Signals / Re: 6775 Serdolik or VARA
« on: May 08, 2022, 1939 UTC »
Heard again today 21:55 UTC Feb 21 2022 new recording. They added another digital mode to the mix?
Recording of the unid.

https://soundcloud.com/bubba-seattle/sdruno-20220221-135752-6775000hz?utm_source=clipboard&utm_medium=text&utm_campaign=social_sharing
---
HF VARA again. After linking several modulation methods are used to pass traffic.

https://www.sigidwiki.com/wiki/VARA_HF

Pages: [1] 2 3 4 5
HFUnderground Mug
HFUnderground Mug
by MitchellTimeDesigns