Archivo de la etiqueta: AMSAT

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.

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

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

The ARISS-UK Team have announced that the Electromagnetic Field 2020 event is to host an ARISS contact during the weekend of July 23-26.

The event will be held at Easton Manor Deer Park, near Ledbury in Herefordshire.

The callsign for the contact will be GB4EMF and the ISS will use NA1SS. More details will be available closer to the date.

Imagine a camping festival with a power grid and high-speed internet access; a temporary village of geeks, crafters, and technology enthusiasts that’s lit up by night, and buzzing with activity during the day. Thousands of curious people will descend on the friendly open space to learn, share, and talk about what they love.

Talks and workshops start at midday on Friday and last until the Sunday evening.

Further info on Electromagnetic Field 2020 at
https://www.emfcamp.org/
https://wiki.emfcamp.org/wiki/Electromagnetic_Field_2020
https://twitter.com/emfcamp

HuskySat-1

ARRL reports University of Washington’s HuskySat-1 3U CubeSat, launched November 2, 2019, is set to deploy January 31 after the vehicle that carried it to the International Space Station undocks.

ARRL say:

HuskySat-1 has remained stowed aboard a Northrop Grumman Cygnus supply vehicle. Within 24 hours after Cygnus’ departure from the ISS, HuskySat-1 and SwampSat 2 will be deployed into orbit. After deployment, HuskySat-1’s 1,200 bps BPSK beacon on 435.800 MHz should be active and decodable with the latest release of AMSAT’s FoxTelem software. HuskySat-1 is expected to carry out its primary mission before being turned over to AMSAT for amateur radio operation.

HuskySat-1 features a 30 kHz wide V/U linear transponder for SSB and CW. The uplink passband will be 145.910 – 145.940 MHz LSB/CW. The downlink passband will be 435.840 – 435.810 MHz USB/CW (inverting). Telemetry will be transmitted on 435.800 MHz, 1k2 bps BPSK with an experimental downlink at 24.049 GHz.

Read the full ARRL story at
http://www.arrl.org/news/huskysat-1-with-vhf-uhf-linear-transponder-set-to-deploy-soon

HuskySat-1 site https://sites.google.com/uw.edu/huskysatellitelab/huskysat-1

On 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

ISS SSTV image 9/12 received by Chertsey Radio Club on Baofeng handheld

Russian cosmonauts are expected to activate Slow Scan Television (SSTV) image transmissions on 145.800 MHz FM from the International Space Station on Thursday, January 30 and Friday, January 31 as part of the MAI-75 experiment.

The expected activation times are:
• Thursday, Jan 30 at 13:30 – 19:00 GMT
• Friday, Jan 31 at 15:00 -17:30 GMT

Note: The computer that supports this activity failed recently so a replacement is being used. It is unknown what impact this may have to the operations.

Transmissions will be made on 145.800 MHz FM (5 kHz deviation) in the SSTV mode PD-120. Once received, images can be posted and viewed by the public at http://www.spaceflightsoftware.com/ARISS_SSTV/index.php

ISS SSTV uses a Kenwood TM D710E transceiver which is part of the amateur radio station located in the Russian ISS Service Module.

Please note that SSTV events are dependent on other activities, schedules and crew responsibilities on the ISS and subject to change at any time. You can check for updates regarding planned operation at:
ISS Ham https://twitter.com/RF2Space
ARISS Status https://twitter.com/ARISS_status
ARISS SSTV Blog https://ariss-sstv.blogspot.com/
AMSAT Bulletin Board http://www.amsat.org/mailman/listinfo/amsat-bb

The Polish ARISS Team have prepared an award for participants in this SSTV experiment. Please see https://ariss.pzk.org.pl/sstv/

You can receive signals from the ISS when it’s in range of the UK from anywhere in the world using these WebSDR’s, select 145800.00 kHz and FM:
SUWS VHF/UHF/Microwave WebSDR https://amsat-uk.org/2014/03/19/suws-vhfuhfmicrowave-websdr/
144-146 MHz WebSDR at Goonhilly https://amsat-uk.org/2019/08/24/goonhilly-144-146-mhz-websdr/

Read the MagPi article Pictures from space via ham radio
https://www.raspberrypi.org/magpi/pictures-from-space-via-ham-radio/

ISS SSTV info and links https://amsat-uk.org/beginners/iss-sstv/