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)

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

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/

AMSAT Argentina drifting Buoy on 145.825 MHz APRS

AMSAT Argentina LU7AA drfiting BuoyOn Thursday, January 30 at 1400 GMT AMSAT Argentina will deploy drifting Buoy on South Atlantic Seas that aims to transmit APRS on the satellite packet frequency of 145.825 MHz. WSPR will also be transmitted.

AMSAT Argentina report:

The APRS beacon, callsign LU7AA-11, will initially be on Argentina’s APRS frequency of 144.930 MHz but will change frequency to 145.825 MHz so that it can be digipeated by the amateur packet radio satellites.

The WSPR beacon will run 900 mW on 14095.6 kHz with the call sign LU7AA.

Release will be 100 km offshore Mar del Plata coast, seeking east aiming currents/winds.

Objective: Sea currents tracking and HF/VHF/SAT QRPp propagation tests.

AMSAT Argentina, LU7AA, will appreciate WSPR stations receiving/reporting 20m.

Further information and pictures at http://amsat.org.ar?f=buoy

Ofcom Consultation: Improving spectrum access for Wi-Fi

5840 MHz UNITEC-1 Venus orbiter

5840 MHz UNITEC-1 Venus orbiter

Ofcom wishes to boost the use of Wi-Fi in Amateur Radio spectrum at 5725-5850 MHz.

The Amateur Satellite Service weak-signal downlink band, 5830-5850 MHz, is used by amateur payloads on Deep-Space and Interplanetary spacecraft as well as by satellites in Low Earth Orbit (LEO). Increased use of Wi-Fi across these frequencies would obliterate the weak amateur satellite signals.

Ofcom propose to remove the Dynamic Frequency Selection (DFS) requirements from Wi-Fi channels in 5725-5850 MHz. They also propose to make 5925-6425 MHz available for Wi-Fi.

The consultation closes on March 20, 2020.

Consultation info
https://www.ofcom.org.uk/consultations-and-statements/category-2/improving-spectrum-access-for-wi-fi

Direct link to PDF document
https://www.ofcom.org.uk/__data/assets/pdf_file/0038/189848/consultation-spectrum-access-wifi.pdf

Wi-Fi Channels in the 5 GHz Band

Special certificate to celebrate 30 years of LUSAT

LUSAT Week CertificateAMSAT-LU will be issuing a special certificate to celebrate the 30th anniversary of the launch of LUSAT (LO-19) during LUSAT week which takes place January 18-26, 2020.

AMSAT Argentina LU7AA says:

On Jan-22-1990 LUSAT/LO-19 was launched along with AO-16, DO-17, WO-18, UO-14 & UO-15.

It’s our first Argentina Satellite, and one of first to use PACSAT protocol.

LUSAT is still calling home with her carrier at +/-437.125 saying hey! I am here, http://amsat.org.ar/pass?satx=lusat

AMSAT-LU invites to share & celebrate this 30th anniversary, due Jan-22 2020.

From Jan 18 thru 26 several Club Stations and amateurs will be active by radio.

Granting thru one contact on any band or mode or Sat a QSL and/or a Certificate.

Full details are at http://amsat.org.ar/?f=30e