AMSAT Files Comments Opposing Deletion of 3.4 GHz Band

FCC SealAMSAT has filed comments on the Federal Communications Commission’s Notice of Proposed Rulemaking which proposes to delete the 3.3 – 3.5 GHz (9 cm) amateur band, including the 3.40 – 3.41 GHz amateur satellite service allocation.

In the comments, AMSAT opposes the deletion of this allocation and emphasizes the necessity of adequate microwave spectrum for future amateur satellite projects, including AMSAT’s GOLF program and the Lunar Gateway.

AMSAT further notes that the most desirable allocations for use as uplinks are the allocations between 2.4 and 5.67 GHz. These allocations total 80 MHz. The most desirable allocation for downlink use is the 10.45 – 10.50 GHz allocation, totaling 50 MHz.

As many of the proposed uses include amateur television and high-speed data transmission with satellites in high earth orbit or lunar orbit, these allocations may quickly become inadequate. AMSAT also notes that the 2.4 and 5.67 GHz allocations are widely used for ISM and consumer devices, such as WiFi and Bluetooth-enabled devices. The 3.4 GHz allocation is shared between amateur use and other non-federal and federal licensees, but is free from the unpredictable interference of consumer devices.

While acknowledging that the 3.4 GHz amateur satellite service allocation is not currently used by any amateur satellites and that it is unsuitable for worldwide communication since it is not available in ITU Region 1, AMSAT identifies a number of potential future uses for the band as worldwide usage of the other available allocations increases. These potential uses include a future amateur satellite in geostationary orbit above the Americas.

In the comments, AMSAT also noted several non-amateur satellite uses of the broader 3.3 – 3.5 GHz amateur service allocation, including its wide use in mesh networking, EME communications, and contesting.

The full text of the comments as filed can be downloaded at https://tinyurl.com/ANS-054-FCC

Interested parties may file reply comments on or before March 22, 2020 at https://www.fcc.gov/ecfs/
The proceeding is WT Docket No. 19-348.

Source AMSAT News Service (ANS)

QARMAN and Phoenix CubeSat Deployment from ISS

Phoenix logoSarah Rogers KI7OOY reports that following the successful launch of NG-13 on Feb 15, the upcoming CubeSat deployment from the ISS is now scheduled for Wednesday, February 19.

This deployment times and frequencies for the CubeSats being deployed on this date are listed in the table below.

As a member of the Phoenix CubeSat team, it would help us greatly to have as much help as possible with tracking our spacecraft following deployment!

For more information on Phoenix’s transceiver characteristics and how you can decode packets from our spacecraft, please see our operations page:
http://phxcubesat.asu.edu/content/amateur-operations

If you have any questions regarding deployment or tracking Phoenix, please do not hesitate to reach out to me.

CubeSat Downlink (MHz) Uplink (MHz) Deployment Time (UTC)
RadSat-u 437.425 437.425 7:10
*Phoenix* *437.35* *437.35* *9:35*
QARMAN 437.35 437.35 11:20
CryoCube 2261 2082.004 12:55
AztechSat-1 437.3 437.3 12:55
SOCRATES 914.7 914.7 14:30
Argus-02 437.29 437.29 16:00
HARP 468 450 16:00
SORTIE 468 450 17:40

Cheers,
Sarah Rogers KI7OOY
Project Manager, Phoenix CubeSat

Indian radio hams interviewed by UK radio station

Shyama Vagadia VU3WHG

Shyama Vagadia VU3WHG

Rajesh Vagadia VU2EXP is well-known as the West India Zone Regional Coordinator for AMSAT-INDIA. Over the years he has done a great of educational outreach explaining and demonstrating amateur satellite communications to school and college students.

In December 2019 he was involved in a workshop at RK University, see the report at https://amsat-uk.org/2019/12/06/satellite-demo-for-students/

Arcacia Radio in Nottinghamshire, UK, will be broadcasting an interview with two Indian radio amateurs Rajesh Vagadia VU2EXP and Shyama Vagadia VU3WHG. In this interview rather than satellites Rajesh and Shyama will be sharing their valuable experience of Amateur Radio Emergency Communication service during Cyclone Vayu that hit the coast of Porbandar (Gujarat) India in June 2019.

Rajesh has supplied AMSAT-UK with some information about the interview:

The interview will cover Cyclone info, Emergency Communication Preparedness, Teamwork, Radio Operations, Reporting, Supporters credit, Coordination with Radio clubs/organisations and Government Departments, etc.

Rajesh VU2EXP is an active radio amateur from Rajkot who is engaged in ham radio promotional activities, whereas Shyama VU3WHG is a 10th grade student at Saint Paul’s School, Rajkot and remains the youngest female Ham in the State of Gujarat!

The interview, part of Backtracks show presented by Brian Ford, is scheduled to be broadcast on Tuesday, February 18, 2020 at 1400 GMT (2pm) and repeated on Thursday, February 20 at 1400 GMT.

Kindly spare time and listen to our Interview on Acacia Radio on 1287 AM or listen worldwide via the live internet radio stream at
http://radio.canstream.co.uk:8033/live.mp3

You may visit Acacia Radio website at:
http://www.AcaciaRadio.com/
https://twitter.com/AcaciaRadio1287

1240-1300 MHz ham radio band discussed by CEPT ECC SE40

CEPT LogoCEPT ECC has released its news summary for January 2020 that includes the SE40 Rome meeting on January 14-16 which discussed compatibility between RNSS and Amateur Services in 1240-1300 MHz.

The coexistence between the Radio Navigation Satellite Service (RNSS) and the Amateur Services in the frequency band 1240 – 1300 MHz was discussed by the CEPT ECC SE40 Working Group. The IARU presented possible scenarios to be taken into account in the sharing studies. The meeting agreed that further work on this WI will be developed in the SE40 Forum.

The papers, Amateur vs RNSS – Amateur scenarios – initial ideas, Draft Report RNSS vs Radioamateur, and Draft Minutes, along with other SE40 Rome meeting documents can be downloaded via
https://www.cept.org/ecc/groups/ecc/wg-se/se-40/client/meeting-documents/?flid=27486

The CEPT ECC January news summary is at
https://cept.org/ecc/news/ecc-monthly-news-summary-for-january-2020/
https://twitter.com/CEPT_ECC

The Galileo GNSS constellation and 1296 EME operation
http://www.southgatearc.org/news/2020/february/the-galileo-gnss-constellation-and-1296-eme-operation.htm

2006 article Potential Interference To Galileo From 23cm Band Operations by Peter Blair G3LTF
http://www.southgatearc.org/articles/galileo.htm

QARMAN and Phoenix CubeSat Upcoming Deployment

Phoenix logoSeveral CubeSats are expected to be deployed from the International Space Station into orbit next week, among them are QARMAN and Phoenix.

Amandine Denis ON4EYA of the QARMAN project reports that due to the delays in Cygnus launch, deployments are postponed most likely to early next week, after Cygnus docking. Qarman can’t wait to make the big jump! See https://twitter.com/AmandineOufti

QARMAN will perform experiments on stability during the the orbit phase and measurements of ablation and radiation during re-entry.

Phoenix is a 3U CubeSat developed by Arizona State University to study the effects of Urban Heat Islands through infrared remote sensing. Following deployment, the Phoenix operations team would appreciate as much help as possible with identifying the spacecraft and verifying that it is operational.

Please note that two CubeSats being deployed operate on the same frequency. Both Phoenix and QARMAN share the frequency of 437.35 MHz, and both utilize an AX.25 9600 baud protocol with GMSK modulation. Both CubeSats will also be deployed within 1.5 hours of each other, and will therefore be close to each other in orbit. Please be mindful of this situation, and if you have any doubt about the CubeSat that you are receiving, please get in touch with Sarah Rogers KI7OOY, Project Manager, Phoenix CubeSat, sroger13 [at} asu.edu with any questions or concerns.

To read more about the Phoenix CubeSat, its transmitter characteristics, and how you can decode the signal, please see the website at
http://phxcubesat.asu.edu/content/amateur-operations

Source ANS and AMSAT Bulletin Board https://www.amsat.org/pipermail/amsat-bb/

5 watt 2.4 GHz Amplifier Kit for QO-100

5 watt 2400 MHz Amplifier Kit

5 watt 2400 MHz Amplifier Kit

The AMSAT-UK shop is now stocking a 5 watt 2.4 GHz amplifier kit for use with the QO-100 geostationary satellite.

The amplifier was designed by Kurt Moraw DJ0ABR and the kit was implemented by Arved Viehweger M0KDS.

The kit includes a single sided PCB on which is already mounted the PA transistor, there is a suitable heat sink on which to mount the PCB with the provided screws. All electronic components are included as are 2 SMA sockets. Assembly of the kits will require some surface mount components to be soldered to the PCB.

Note: It does not include a case for the unit and a separate 24 volt power supply will be required.

Kit details at https://shop.amsat-uk.org/QO-100_5W_Amplifier_Kit_designed_by_DJ0ABR_and_implemented_by_M0KDS/p3815740_20307881.aspx

Assembled PCB https://shop.amsat-uk.org/product/u-100ampassembled

QO-100 information https://amsat-uk.org/satellites/geo/eshail-2/