| Memo Number |
Title |
Author(s) |
Date |
Original PDF |
| 1 |
VLBA Antenna Choice |
B. Horne |
10/07/83 |
|
| 2 |
TIW Antenna Panels |
T. Legg |
09/14/83 |
|
| 3 |
Setting the VLBA Antennas |
W. Horne |
11/03/83 |
|
| 4 |
Drive Design-VLBA Antennas |
W. Horne |
11/21/83 |
|
| 5 |
VLBA Antenna Hard Stops |
J. E. Thunborg |
04/98 |
|
| 6 |
Owens Valley Maintenance Visit April 20-25, 1998 Trip Report |
J. E. Thunborg |
05/08/98 |
|
| 7 |
Los Alamos, NM VLBA Site Azimuth Rail Inspection Feb. 19 |
B. Broilo |
04/07/98 |
|
| 8 |
Brewster, WA VLBA Site Azimuth Rail Inspection Feb. 19 |
B. Broilo |
02/18/98 |
|
| 9 |
Trip Report - Kitt Peak Bearing Leveling |
G. A. Stanzione |
05/98 |
|
| 10 |
VLBA North Liberty Trip Report |
C. Janes |
05/98 |
|
| 11 |
Los Alamos Maintenance Visit, July 13-17, 1998, Trip Report |
J. E. Thunborg |
07/28/98 |
|
| 12 |
Brewster, WA VLBA Site Azimuth Rail Maintenance, July 14th |
B. Broilo |
08/05/98 |
|
| 13 |
Measurement of VLBA Counterweight Imbalance |
J. E. Thunborg |
09/16/98 |
|
| 14 |
Brewster Maintenance Visit, August 17-22, 1998 - Trip Report |
J. E. Thunborg |
09/10/98 |
|
| 15 |
Trip Report: Wheel Changing in the Garden of Eden |
J. Ruff |
10/05/98 |
|
| 16 |
Mauna Kea Maintenance Visit, March 22-27, 1999 - Trip Report |
J. E. Thunborg |
04/06/99 |
|
| 17 |
VLBA Panel Repair |
R. Gutierrez, J. Thunborg, J. Wall |
04/29/99 |
|
| 18 |
St. Croix Maintenance Visit, June 22-28, 1999 - Trip Report |
J. E. Thunborg |
07/07/99 |
|
| 19 |
Fall Protection for Inclined Ladders |
J. R. Ruff |
07/22/99 |
|
| 20 |
St. Croix Corrosion Report |
J. E. Thunborg |
08/07/99 |
|
| 21 |
Leica Geosystems Equipment Demonstration |
J. E. Thunborg |
08/12/99 |
|
| 22 |
Hancock, New Hampshire- Maintenance Visit, June 22-28, 1999 - Trip Report |
J. E. Thunborg |
09/02/99 |
|
| 23 |
Brewster, Washington - Wheel/Axle Repair, October 21-23, 1999 - Trip Report |
J. E. Thunborg |
10/29/99 |
|
| 24 |
St. Croix Maintenance Visit, January 15-20, 2000 - Trip Report |
J. E. Thunborg |
01/30/00 |
|
| 25 |
North Liberty Maintenance Visit April 14th through 19th, 2000 Trip Report |
J. Ruff |
05/17/00 |
Original |
| 26 |
Kitt Peak Maintenance Visit July 10th through 16th, 2000 Trip Report |
J. Ruff |
08/07/00 |
Original |
| 27 |
Fort Davis Maintenance Visit August 14th through 19th, 2000 Trip Report |
J. Ruff |
08/22/00 |
Original |
| 28 |
Los Alamos Drive #2 Wheel Replacement |
J. Ruff |
12/19/00 |
|
| 29 |
Los Alamos Elevation Bearing Replacement |
J. Ruff |
01/30/01 |
|
| 30 |
VLBA Azimuth Axle Failure - Follow Up |
J. E. Thunborg |
03/22/01 |
|
| 31 |
Conversion From Analog To Digital Tachometer |
D. Whiton |
12/04/00 |
|
| 32 |
Los Alamos Maintenance Visit April 17the through 23rd, 2001 Trip Report |
J. Ruff |
05/01/01 |
Original |
| 33 |
Owens Valley Maintenance Visit June 11th through 17th, 2001 |
J. Ruff |
07/10/01 |
Original |
| 34 |
Brewster Maintenance Visit July 23rd through 30th, 2001 |
J. Ruff |
08/02/01 |
Original |
| 35 |
VLBA Subreflector Measurement and Repair |
J. E. Thunborg |
08/22/0[1] |
Original |
| 36 |
Pie Town Maintenance Visit 2001 |
J. Ruff |
01/04/02 |
Original |
| 37 |
Owens Valley Gearbox Repair |
J. E. Thunborg |
04/26/02 |
Original |
| 38 |
North Liberty Rail Repair |
J. E. Thunborg |
06/14/02 |
Original |
| 39 |
Los Alamos - Drive #1 Axle Repair June 18-19, 2002 - Trip Report |
J. E. Thunborg |
07/02 |
Original |
| 40 |
St. Croix Maintenance Visit April 8th through 25th, 2002 |
J. Ruff |
06/24/02 |
Original |
| 41 |
Hancock Maintenance Visit June 3rd through 10th, 2002 |
J. Ruff |
06/25/02 |
Original |
| 42 |
Los Alamos Az Drive #1 July 2nd and 3rd, 2002 |
J. Ruff |
07/08/02 |
Original |
| 43 |
Lightning Protection at VLBA Pie Town August 2002 |
B. Broilo, P. Rhodes, C. Janes |
08/02 |
|
| 44 |
Los Alamos Rail Repair |
J. E. Thunborg |
08/21/02 |
Original |
| 45 |
Mauna Kea Maintenance Visit August 12th through 21st, 2002 |
J. Ruff |
09/30/02 |
Original |
| 46 |
St. Croix, Virgin Islands Maintenance Visit March 15-25 |
[E. Carlowe] |
[05/03] |
Original |
| 47 |
Kitt Peak, Arizona VLBA Maintenance Visit June 5-12/03 |
[E. Carlowe] |
[08/03] |
Original |
| 48 |
St. Croix Elevation Bearing Replacement - Trip Report |
J. E. Thunborg |
09/10/03 |
Original |
| 49 |
Recommended Strategy for VLBA Elevation Bearing Replacement |
M. McKinnon, J. Thunborg, J. Ruff |
10/17/03 |
Original |
| 50 |
North Liberty Drive #2 Wheel/bearing Replacement October 20-23, 2003 - Trip Report |
J. E. Thunborg |
11/03 |
Original |
| 51 |
North Liberty, Iowa VLBA Maintenance Visit September 10th thru 16/03 |
[E. Carlowe] |
[12/03] |
Original |
| 52 |
Pie Town Drive #1 Wheel/Bearing Replacement May 14-18, 2004 |
[E. Carlowe] |
[05/04] |
Original |
| 53 |
Pie Town Rail Repair |
J. E. Thunborg |
07/08/04 |
Original |
| 54 |
Mauna Kea Rail Repair |
J. E. Thunborg |
08/13/04 |
Original |
| 55 |
Fort Davis, Texas VLBA Maintenance Visit June 10th thru 18th 2004 |
[E. Carlowe] |
[07/04] |
Original |
| 56 |
Brewster, WA. VLBA Maintenance Visit July 28th thru August 8th 2004 |
[E. Carlowe] |
[08/04] |
Original |
| 57 |
Owens Valley, CA. VLBA Maintenance Visit Sept. 23 thru Oct. 1 2004 |
[E. Carlowe] |
[10/04] |
Original |
| 58 |
Owens Valley - Drive Wheel #2 Replacement February 14 - 17, 2005 - Trip Report |
R. Gutierrez |
03/05 |
Original |
| 59 |
St. Croix, VI. VLBA Maintenance Visit April 4th thru April 22nd 2005 |
[E. Carlowe] |
[07/05] |
Original |
| 60 |
Los Alamos, NM. VLBA Maintenance Visit July 28th - August 3rd 2005 |
[E. Carlowe] |
[08/05] |
Original |
| 61 |
North Liberty, IA. VLBA Maintenance Visit September 20-27th 2005 |
[E. Carlowe] |
[11/05] |
Original |
| 62 |
St. Croix Corrosion Report |
J. E. Thunborg |
03/03/06 |
Original |
| 63 |
Kitt Peak, Arizona. VLBA Maintenance Visit May 16-22, 2006 |
[E. Carlowe] |
[06/06] |
Original |
| 64 |
Mauna Kea, Hawaii VLBA Maintenance Visit July 19-Aug 6, 2006 |
[E. Carlowe] |
[08/06] |
Original |
| 65 |
Mauna Kea Drive #1 Wheel/Bearing Replacement - July 19 - August 6, 2006 |
[E. Carlowe] |
[09/06] |
Original |
| 66 |
Hancock, New Hampshire VLBA Maintenance Visit September 20-27 2006 |
[E. Carlowe] |
[11/06] |
Original |
| 67 |
Fort Davis - Drive #1 Wheel/Bearing Assembly Replacement January 3-6, 2007 - Trip Report |
J. E. Thunborg |
01/07 |
Original |
| 68 |
St. Croix VLBA Antenna Painting and Surface Preparation Requirements |
J. E. Thunborg |
05/08/07 |
Original |
| 69 |
Fort Davis, Texas VLBA Maintenance Visit May 01-08, 2007 |
[E. Carlowe] |
[06/07] |
Original |
| 70 |
Fort Davis Bearing Replacement - Trip Report |
J. E. Thunborg |
02/27/08 |
Original |
| 71 |
Brewster, Washington VLBA Maintenance Visit July 24-31, 2007 |
[E. Carlowe] |
[08/07] |
Original |
| 72 |
Saint Croix, VI. VLBA Electronics Maintenance Visit March 11-20, 2008 |
[E. Carlowe] |
[03/08] |
Original |
| 73 |
North Liberty, Iowa VLBA Maintenance Visit April 30 - May 7, 2008 |
[E. Carlowe] |
[04/08] |
Original |
| 74 |
Owens Valley, California VLBA Maintenance Visit August 18-25, 2008 |
[E. Carlowe] |
[09/08] |
Original |
| 75 |
St. Croix Maintenance Trip Report October 27 - November 14, 2008 |
J. E. Thunborg |
12/18/08 |
Original |
| 76 |
St. Croix VLBA Antenna Painting and Surface Preparation |
J. E. Thunborg |
03/31/09 |
Original |
| 77 |
Kitt Peak, Arizona VLBA Maintenance Visit April 27-May 7, 2009 |
[E. Carlowe] |
[05/09] |
Original |
| 78 |
Los Alamos, New Mexico VLBA Maintenance Visit July 14- 16, 2009 |
[E. Carlowe] |
[11/09] |
Original |
| 79 |
Mauna Kea, Hawaii, VLBA Maintenance Visit September 22- October 2, 2009 |
[E. Carlowe] |
[11/09] |
Original |
| 80 |
Hancock, NH, VLBA Maintenance Visit February 8-20 2010 |
[E. Carlowe] |
[05/10] |
Original |
| 81 |
Fort Davis, Texas VLBA Maintenance Visit April 19- April 27, 2010 |
[E. Carlowe] |
[06/10] |
Original |
| 82 |
Brewster, Washington VLBA Maintenance Visit July 12-21, 2010 |
[E. Carlowe] |
[08/10] |
Original |
| 83 |
North Liberty Rail Maintenance, July 2010 |
B. Broilo |
09/02/10 |
Original |
| 84 |
North Liberty, Iowa VLBA Maintenance Visit April 12-18, 2011 |
[E. Carlowe] |
[07/11] |
Original |
| 85 |
Owens Valley, California VLBA Maintenance Visit June 9-15, 2011 |
[E. Carlowe] |
[07/11] |
Original |
| 86 |
Trip Report - Fort Davis 16-20 May 2011 Elevation Bearing Change |
[M. Evatt] |
[07/13] |
Original |
| 87 |
Trip Report - Kitt Peak Azimuth Drive Wheel Assembly #2 Replacement 9-11 Feb 2012 |
[M. Evatt] |
[07/13] |
Original |
| 88 |
Trip Report - Mauna Kea 31-May Thru 7-June 2012 Elevation Bearing Change |
[M. Evatt] |
[07/13] |
Original |
| 89 |
Azimuth Rail Repair at Fort Davis, Texas June 17 - June 25, 2013 |
J. E. Thunborg |
07/10/13 |
Original |
| 90 |
2015 - St Croix Corrosion Report |
J. E. Thunborg |
08/12/15 |
|
| 91 |
Measuring Slew Rates of VLBA Antennas |
W. Brisken |
05/02/16 |
|
| 92 |
2016 - St Croix Mechanical Repair Trip Report |
J. E. Thunborg |
09/09/16 |
|
| 93 |
Cold Weather Observing |
J. Thunborg |
12/20/19 |
|
| 94 |
St. Croix VLBA Antenna Structural Repair, Surface Preparation and Re-Coating |
R. J. Taylor, J. Thunborg, K. Baker |
10/2020 |
|
| 95 |
Trip Report – Hancock, NH VLBA Station: Dual Elevation Bearing Change and Failure Analysis |
W. Martin |
06/09/22 |
|
| 96 |
VLBA Owens Valley Gearbox Repair |
M. Romero |
12/17/14 |
|
| 97 |
VLBA Pie Town Wheel Replacement, 8/2016 |
M. Romero |
09/16 |
|
| 98 |
VLBA Pie Town Drive Wheel #2 Replacement |
M. Romero |
03/17 |
|
| 99 |
Azimuth Rail Repair at Pie Town, NM, August 14 – August 17, 2017 |
M. Romero |
08/31/17 |
|
| 100 |
Tiger Team, Mechanical Maintenance, Kitt Peak, AZ, October 10 – October 18, 2017 |
M. Romero |
11/17 |
|
| 101 |
Azimuth Rail Grout Repair at Brewster, Washington, July 14 – July 18, 2019 |
J. Gallegos |
07/23/19 |
|
| 102 |
Hancock‐ Drive #2 Wheel/Bearing Assembly Replacement, July 14 – July 18, 2019 |
J. Gallegos |
10/20 |
|
| 103 |
Azimuth Rail Grout Repair at Pie Town, New Mexico, December 28 – December 30, 2020 |
J. Gallegos |
01/20/21 |
|
| 104 |
Trip Report – Fort Davis, February 14-17, 2023: Antenna Inspection and Gearbox Inspection |
D. Paul |
03/07/23 |
|
| 105 |
Trip Report – Fort Davis, April 19-24, 2023: Rail Section Replacement |
D. Paul |
06/05/23 |
|
| 106 |
Trip Report – Mauna Kea, May 9-17, 2023: Dish Panel Replacement |
D. Paul |
07/10/23 |
|
| 107 |
Trip Report – St Croix, June 21-22, 2023: Engineering Inspection |
D. Paul |
07/10/23 |
|
