In 2020, a project between AMSAT-UK, AMSAT-NL, and Swiss universities got under way with the aim of equipping two Swiss satellites — for now under the CHESS name — with linear amateur radio transponders. Linear transponders permit several CW or SSB contacts to take place simultaneously within a prescribed passband. The satellites also include features for classroom demonstrations and experiments. The CHESS (Constellation of High Energy Swiss Satellites) project includes two satellites, which will be built simultaneously and later launched as a constellation.
“The main science objective is to improve the understanding of the upper atmosphere by in-situ measurements…taking advantage of a constellation of identical nanosatellites to study the composition of the terrestrial atmosphere and its density,” the CHESS website explains.
The first satellite will have a nearly circular orbit at an altitude of 400 kilometers. The second will have an elliptical orbit with an altitude of 350 × 1,000 kilometers.
The amateur radio payload is a joint project of AMSAT-UK and AMSAT-NL. A successful review of system requirements was completed in December. Launch will not take place until the fourth quarter of 2022.
The satellites themselves are a project of the École polytechnique fédérale de Lausanne (EPFL), with support from several other schools. — Thanks to AMSAT News Service via AMSAT-UK
SOURCE:ARRL
Antenna
Vertical Dipole Bravo 7K – 7 band coverage: 40-30-20-17-15-12-10
Vertical Dipole Bravo 7K 7 band coverage: 40-30-20-17-15-12-10 manual tune 20-17-15-12-10 meters are full size setting tubing lengths High Q... Read more
DX Commander Expedition Portable Antenna
A first look at the Portable version of the world famous DX Commander vertical antenna for Ham Radio. Read more
Building a Delta Loop Antenna For The 30m Band, Part 1.
“Since my 6m Delta Loop seems to work pretty well I decided to build one for the 30m band to be used with my Spiderbeam 12m mast. Unfortunately... Read more
The Yagi-Uda Antenna
A Yagi-Uda antenna, commonly known simply as a Yagi antenna, is a directional antenna consisting of multiple parallel dipole elements in a line,[1] us... Read more
Antenna Rotators “ARRL The Doctor is In” podcast. Listen…and learn!
“Antenna Rotators” is the topic of the new (August 2) episode of the “ARRL The Doctor is In” podcast. Listen…and learn! Sponsored by DX Engine... Read more
Review
Safely connect several HF radios with mulltiple antennas
“In this video I present the protection measures used in my amateur radio station to be able to connect several HF radios with several antennas.... Read more
MFJ-911H Balun Review 160-10 meters 300W
“Today on Hamradiocomms I review the excellent MFJ-911H Current Balon. Handles 160-10 meters 300W and has switchable 1:1 or 4:1 baluns. Makes po... Read more
The MFJ-1234 Rig Pi Remote Station from Dayton Hamvention 2019
“The new Rig-Pi from MFJ, model MFJ-1234, is the next logical step in remote operation. For a low price, it will remote control almost any rig a... Read more
Antenna Chameleon F-LOOP VS Chameleon P-LOOP
“This is the long awaited Chameleon F-LOOP vs Chameleon P-LOOP review. In this video we go through the design and functionality of each antenna,... Read more
Overview of the Kenwood TH-D74A
Kenwood TH-D74A 144/220/430 MHz TRIBANDER. Triband Amateur radio packed with convenient features and the advantage of a digital transceiver with D-STA... Read more
Equipment
Ten-Tec Eagle HF DSP Transceiver
TEN-TEC has created a 100 watt transceiver combining simplified controls and ease of operation with the excellent performance of a low first IF... Read more
Elecraft KX2 announced at the Dayton Hamvention 2016
Elecraft KX2 Hello to all, We are please to announce a new radio to complement the KX3 and the KX-Line. Here are the details. What: Elecraft announc... Read more
ACOM Company Tour. HF power amplifier production
ACOM Company Tour. HF power amplifier production – ACOM 1010, ACOM 1000, ACOM 700S, ACOM 1200S, ACOM 1010, ACOM 1500, ACOM 2100 and ACOM 2000A. Read more
How to build a Simplified Arduino CW Trainer by Tom N4TL
The winning article for the September 2016 QST Cover Plaque award is “Arduino CW Trainer” by Tom Lewis, N4TL. The QST Cover Plaque Award — given... Read more
DRM Monitoring Receiver RF-SE
RF-SE is a professional DRM30/AM/SSB monitoring and measurement receiver, which is available in different models depending on the desired application.... Read more
News
WRTC 2023 AWARD : January 2023…headset on!
WRTC Organizing Committee is proud to announce a 2023 edition of WRTC 2023 AWARD! This is NOT WRTC 2022 Contest that will be held in Bologna in July 2... Read more
Dayton Hamvention Announces Theme for 2023
Dayton Hamvention® 2023 is just over 6 months away, and next year’s Hamvention team has selected “Innovation!” as the event theme. T... Read more
The 2023 ARRL Calendar
Keep track of your important dates, ARRL contests, and holidays with a 2023 ARRL Calendar. This year’s calendar features Collegiate Amateur Radi... Read more
The Secret Government Radio Signals I Heard Today!
The Secret Government Radio Signals Read more
Radio Amateurs Support the Great ShakeOut 2022 in Puerto Rico
Students from the Crop Protection Student Association at the University of Puerto Rico in Mayagüez participated in a communications practice session a... Read more
