1. May 2017 Arecibo HF Experiments
Paul A. Bernhardt
Naval Research Laboratory, Washington, DC

2. ROTHR DIR Schedule for NRL
Dates: 21 to 25 May 2017
Times:
14:19 to 16:18 GMT
Frequency Selection
Virginia: Place Ocean Scatter Twice Distance as from VA to PR
Texas: Place Ocean Scatter Twice Distance as from TX to PR (or the Best that can be Done)
Transmit Beam Azimuth Selection
VA to PR: 152 Degrees (5 Beams at 136, 144, 152,160, 168 Degree Azimuths)
TX to PR: 101 Degrees (5 Beams at 85, 93, 101,109, 117 Degree Azimuths)

3. ROTHR DIR Azimuths for Arecibo Tests

4. NRL ROTHR Experiment Requests GMT
Start Date Time (GMT)
Stop Time (GMT)
2017/05/21 15:47:30
16:17:30
2017/05/22 15:25:00
15:55:00
2017/05/23 15:03:00
15:33:00
2017/05/24 14:41:00
15:11:00
2017/05/25 14:19:00
14:49:00
Note: Call (757) QVI and WSBI Start Times
Call Watch Supervisor at for Dwell Status Gordon Patterson Watch Supervisor
Ask for Ionosonde Critical Frequencies
ROTHR Radar Modes
VA and TX Frequency Selection for DIR at Twice Distance to Arecibo, PR
Wave Form 119 (62.5 Hz, 8.33 kHz BW, s CIT)
Azimuths to Cover Plus/Minus 25 Degrees Around Arecibo
Virginia Transmitter DIR Azimuths:
Texas Transmitter DIR AzimuthsL

5. ePOP Times in May 2017 GMT Date Time (GMT) Altitude (km) Time (AST)
ePOP RRI
Antenna A
Antenna B
2017/05/21 16:02:30
404.99
12:02:30
5.1 MHz
2017/05/22 15:40:00
412.00
11:40:00
TBD
2017/05/23 15:18:00
428.96
11:18:00
2017/05/24 14:56:00
447.17
10:56:00
2017/05/25 14:34:00
466.56
10:34:00

6. ePOP Time
8.187 MHz
5.1 MHz

7. Puerto Rico Ionosphere Profiles 17 May 2017 1400 to 1600 GMT
Plasma Frequency (MHz)
Altitude (km)

8. Old Arecibo HF Schedule for NRL

9. Revised Arecibo HF Schedule for NRL

10. ePOP Orbits for NRL ROTHR with Arecibo
GMT Date Time

11. NRL Experiment Arecibo Request Times AST
Start Date Time (AST)
Stop Time (AST)
Freq. (MHz)
Mode
2017/05/21 11:47:30
12:17:30
5.1 MHz CW
2017/05/22 11:25:00
11:55:00
CW 1 1 Min On/Off
2017/05/23 11:03:00
11:33:00
CW Pulsed 3s/1s
2017/05/24 10:00:00
16:00:00
5.1 and 8.175
Multiple Modes
2017/05/25 10:19:00
10:49:00
5.1 or 8.175
Pulsed 3s/1s 1 Min Off/On

12. QVI Profiles from Puerto Rico

13. QVI Profiles from Texas

14. QVI Profiles from Virginia