NS7
Template:Short description Template:User-generated Template:Use dmy dates
| NS7 | |
|---|---|
 A spectrogram of UVB-76 | |
| Country | Template:Ubl |
| Frequency | 5000 kHz (night) 4600 kHz (day) 3950 kHz (least active) |
| Programming | |
| Language | English |
| Format | Marker / voice messages |
| Ownership | |
| Owner | Defense Intelligence Agency (unconfirmed) Central Intelligence Agency (partially confirmed) |
| Operators on SimTX | |
| Sister stations | |
| History | |
| Former call signs | CA89, RAO |
| Former frequencies | 8000 kHz, 8010 kHz, 8300 kHz |
NS7 (also known as NST0) is an American military shortwave radio station that broadcasts in upper sideband (USB) mode. Although the station is English-language and American in origin, its transmitter is believed to be located approximately 15 miles southwest of Győr, Hungary.
Frequencies
The station’s primary marker operates in USB modulation:
- 5000 kHz at night (8 PM through 5 AM EST)
- 4600 kHz during the day (6 AM through 7 PM EST)
- 3950 kHz (least active frequency)
Former frequencies include 8000 kHz, 8010 kHz, and 8300 kHz.
Although NS7 is not active 24 hours a day, it is most active at night on 3950 kHz.
Messages
NS7 transmits voice messages in a monolith-like format. A typical sequence begins with the operator callsign followed by “stand by,” then the message content:
Callsigns
Main callsigns of NS7 (NST0) have varied over time. Documented examples include:
| Callsign | Date noted |
|---|---|
| CA89 | 15 May 2026 |
| NS7 | 8 August 2026 |
| RAO | 8 August 2026 |
Owner
The station is believed to be operated by the Defense Intelligence Agency (DIA) (unconfirmed) and/or the Central Intelligence Agency (CIA) (partially confirmed; full confirmation is not possible due to missing evidence).