All posts by Fred Kemmerer

I enjoy station building, contesting and helping new folks to join and have fun with our hobby.

Countdown to an ISS Contact with Bishop Guertin H.S.

We have been working with the students and faculty at Bishop Guertin H.S. (BGHS) here in Nashua, New Hampshire for several years now. This is the story of their planned contact with the International Space Station (ISS).

Amateur Radio STEM Learning Projects

The STEM Club at BGHS has done quite a few Amateur Radio-related project with us.

HAB-2 Students and their Teach Ready to Launch
BGHS students and their Teacher Ready to Launch the HAB

Our High-Altitude STEM Learning program got its start with the students at BGHS and they have been part of several HAB projects and launches.

The video above shows the students launching the HAB.

BGHS Kit Build Students

We also built CW Transceivers and Morse Code Practice kits as part of the STEM club activities and BGHS.

All of this has led to several students and their teacher becoming licensed Amateur Radio operators.

A Contact with the ISS

Karen KC1KBW - Bishop Guertin Teacher Building a Kit
Karen KC1KBW – BGHS Teacher Building a Kit

We owe a lot of thanks to Karen Crivac, KC1KBW who is a teacher at BGHS. Karen has been providing tremendous support and encouragement for our work to bring Amateur Radio to the students at BGHS. Karen holds a General Class Amateur Radio license.

The Bishop Guertin STEM Club Joins The Experience
The BGHS STEM Club Joins The Experience

Karen and the STEM club at BGHS were part of the ISS Contact that we did with Hudson Memorial School some time ago. Shortly afterward, Karen began working on securing an ISS Contact for her school.

The process of securing an ISS contact experience involved a lot of work to create a quality STEM-learning program leading up to and after a Contact with the ISS. Karen and the faculty at BGHS did a great job with this and were awarded a Contact late last year.

John, AC1EV Helps a Student Get On The Air
John, AC1EV Helps a Student Get On The Air

Contacts with the ISS are arranged by ARISS. I serve as both a Mentor and a Ground Staton as part of the ARISS program. I have had the pleasure of serving as the ARISS Mentor for the Bishop Guertin contact. The Nashua Area Radio Society is also BGHS’s partner Amateur Radio club. Jon Turner, AC1EV has been working closely with Bishop Guertin to help them to prepare for their contact.

BGHS Calling NA1SS, Do You Copy?

The students at BGHS have been working on creating questions to ask their Astronaut during their upcoming contact. Many BG students submitted candidate questions.

There is only time for about 20 questions to be asked during the actual contact so the students in STEM Club create the video above to answer some of the questions that did not make the final list for their contact. You can click on the video above to hear the questions and the answers from the STEM Club team.

Here are the questions that the students at BGHS are planning to ask their Astronaut:

  1. Aya, KC1JEB – What landmark on Earth looks the most amazing from space?
  2. Shea – What day to day task is most challenging in space?
  3. Brandon – What inspired you to become an astronaut?
  4. Ian, KC1ONS – What experiments are you currently working on?
  5. Christopher, KC1KBY – Can you share with us what you like best about being in space?
  6. Ella  – What does a typical day look like for you?
  7. Connor- What is something new you learned in space?
  8. Ethan – What did you bring from Earth to remind you of home?
  9.  Lindsay – What part of space travel is most exciting for you?
  10. Connor – Does being in zero gravity feel like floating in the water?
  11. Aya, KC1JEB – What are some recent discoveries the ISS has made from the experiments conducted in space?
  12. Shea – Upon returning to Earth, how do you plan to re-adjust to gravity?
  13. Brandon – What are your thoughts as you prepare for lift-off?
  14. Ian, KC1ONS – As an experienced astronaut, what advice would you give to a new astronaut heading to the ISS?
  15. Christopher, KC1KBY – How do you treat injuries or illnesses in space?
  16. Ella – Do you have a favorite space food?
  17. Connor – What is the most unusual thing you have seen in space?
  18. Ethan – What part of your training was most challenging?
  19. Lindsay – What happens to your tears in space?
  20. Connor – How do the sun and stars look different in space than on Earth?

T = 0 for Calling the ISS from Bishop Guertin H.S. 

Astronaut Shannon Walker, KD5DXB
Astronaut Shannon Walker, KD5DXB

The pre-contact program for Bishop Guertin’s Contact will begin on Friday, February 18th, 2021 at 12:20 pm eastern time (17:20 UTC). The students at BGHS will be talking with astronaut Shannon Walker, KD5DXB who is onboard the ISS. The ISS will come over the horizon here in New Hampshire, USA at about 12:56 pm eastern time and will plan to make initial contact with Shannon then.

You can view the contact by clicking on the video above.

The Ground Station

AB1OC ARISS Ground Station
AB1OC ARISS Ground Station

I also have the honor of serving as the ARISS Ground Station for BGHS’s contact. It will be my job to establish and maintain the radio link between the students at BGHS and the Shannon on the ISS while the students ask their questions.

AB1OC Space Communications Antennas
AB1OC Space Communications Antennas

The station will be computer-controlled, enabling the antennas here to track the ISS during our contact. You can learn more about our Ground Station here.

Interested in learning more about our experience making contacts with the ISS? Check out this link for other ISS contact and activity articles.

The students have been learning much about space and radio technology in preparation for their contact with the ISS. The faculty and administrators at Bishop Guertin have also poured a great deal of time and energy into their contact. I hope that you’ll join us via the live stream and watch the students at BGHS make history!

Fred, AB1OC

Satellite Station Antenna Upgrades

We’ve been making good use of our Satellite Ground Station. Our existing 2MCP14 and 436CP30 antennas have enabled us to make over 2,000 satellite contacts; working 49 of the 50 U.S. States, 290+ Grid Squares, and 31 DXCCs. Our station is also an ARISS Ground Station which enables us to help Schools around the world talk to astronauts on the ISS.

As you can tell, we are pretty active on Satellites so we decided to take our station up a level by upgrading our antennas. We choose larger yagis with booms over 18+ ft in length. The upgrade required us to improve the mechanical aspects of our Satellite Antenna System as well…

Source: Satellite Station 4.0 Part 12 – Antenna Upgrades

We’ve been pretty busy with antenna projects at AB1OC-AB1QB this fall. In addition to building a new EME Antenna System and Station, we’ve also been working on upgrading our Satellite Antennas.

Satellite Antenna Upgrade

The Satellite Antenna project was a pretty challenging one. We opted for the largest available circularly satellite antennas available from M2 Antenna Systems.

Satellite Antennas On the Tower - Parked
Satellite Antennas On the Tower – Parked

Getting these antennas to be mechanically reliable, properly aligned, and operating smoothly required us to make some custom modifications to the hardware associated with our Satellite Ground Station.

Cross Boom Counterweight and Trusses
Cross Boom Counterweight and Trusses

The article above covers the construction and adjustment of the new antennas. It also covers several custom enhancements that we made to our satellite antenna support system.

Aircraft Tracking Antenna System Addition

Satellite Tower Infrastructure including ADS-B Antenna
Satellite Tower Infrastructure including ADS-B Antenna

We also added an outdoor antenna for our FlightAware ADS-B Tracker as part of the project. ADS-B is a relatively recent aircraft tracking system. Our new ADS-B antenna has increased our Tracker’s contribution to the ADS-B network considerably.

If you’ve ever wondered what goes into building and putting up a high-performance satellite ground station, take a look at the article. The ideas shared there are applicable to the construction of any VHF and above antenna system – especially those that utilize elevation rotators and thus require balancing.

Fred, AB1OC

EME Station 2.0 Part 13 – H-Frame Enhancements

Our new 2m EME Antenna System has been performing very well. One area that we noticed that could use improvement was the alignment of our antennas as we move them in the Elevation plane. We’ve added some custom enhancements to our EME H-Frame to address this problem…

Source: EME Station 2.0 Part 13 – H-Frame Enhancements

EME H-Frame – The Problem

Any antenna system that involves large, multiple yagi antennas is bound to need some tweaking to work at its peak potential and to be mechanically reliable. Our recently constructed EME antenna system is no exception. We added some elements to properly balance our EME H-Frame assembly when we put it up.

We found that the antenna tended to change their alignment when we rotated them in the elevation plane. A solution to reduce some of the stress on the fiberglass components in our H-frame was also needed.

The Solution

Custom EME H-Frame Truss Enhancements
Custom H-Frame Truss Enhancements

The solution to these problems was a Custom Truss System that we worked with Matt at XX-Towers and Robert at M2 Antenna Systems to create. We built the new Trusses using non-conductive Phillystran cable and Turnbuckles. The parts were carefully arranged to keep all of the metal components that were added at the center of our antenna array to prevent any impact on the system’s antenna patterns.

We had a 50-foot Boom lift at our QTH recently to enable some upgrades to our Satellite Antennas. We made good use of it to install our EME H-Frame enhancements as well.

This part of our EME Project is a good example solution for some of the typical mechanical problems one encounters when building a large antenna system.

You can see and read more about what we did via the link above.

Fred, AB1OC

Radio Amateurs Developing Skills Worldwide