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Ham Satellite news

Updated satfiles for Icom and SDR-Console

#ic705 #ic9700 #sdrconsole

The satellite frequency files for IC-705, IC-9700 and SDR-Console has been updated with CAS-5A, CAS-10 and IO-177.

All files can be downloaded from Github

If you have problem navigating in Github you can use this direct link and then just choose “Download” and you get all four files for IC-705 and IC-9700.

For more info about the files see:

Categories
Ham Satellite news

CAS-5 FO-118 new satellite with transponder

CAS-5A

The CAS-5, designated as Fengtai-OSCAR 118 (FO-118), satellite was successfully deployed into orbit in december 2022 (2022-12-09). CW and GMSK telemetry has been recieved and the U/V transponder has been active by several ham radio operators.

Frequency plan:

Updates from SatNOGS community:
https://community.libre.space/t/jielong-3-camsat-cas-5a-2022-12-09-06-35-utc/9865/3

The CAMSAT CAS-5A manual by BA1DU:
https://ukamsat.files.wordpress.com/2022/12/cas-5a-amateur-radio-satellite-users-manual-v1.0.pdf

Categories
Ham Satellite news

GreenCube QSO 2022-11-21 at 300bd

Managed to work two QSOs today with GreenCube at 300bd. K8DP and EA1DR. I think the decode was a little bit better with 300bd then 1200bd. TX power was about 30 watts and no problem getting in on the satellite.

Categories
Ham Satellite news SDR and software

Working GreenCube digipeater guide by FG8OJ

@FG8OJ has made an excellent guide of working GreenCube digipeater with IC-9700 and supporting software. I will not write a new guide as Burts guide fully covers everything.

Valid exchange messages for a QSO should be:

You can look at FT8 needed exchange : 2 exchanges from each side:

A:Grid
B:Report
A:R + Report
B:RR73

or
A:Report
B:R + Report
A:RR73
B:73

Categories
Ham Satellite news

Greencube operation tips from K8DP and 3B8DU

This is a re-post from ANS-324

As of Nov. 18, a total of 135 stations digipeated via the Italian GreenCube satellite. These stations represent 31 DXCC entities. Stations now report using various combinations of software to operated through the satellite. One constant is using SatPC32ISS for antenna tracking and doppler correction.

The S5Lab GreenCube team software is a bit more complicated and at the beginning that was all that was available. It used three programs, including GNURadio, GreenCubeTNC and GreenCubeDigi.

However, UZ7HO quickly created the digi app and custom soundmodem after the S5Lab release, most everyone has migrated to UZ7HO now. Note: UZ7HO has updated the program from time to time, so download it again once in a while to get the updates. It is available at: https://uz7.ho.ua/greentnc.zip (There are both FM and SSB soundmodems included in the package, but the FM one can ignored, as all are using USB-D for both uplink and downlink.) Note matching the rig bandpass filter with the Soundmodem one (900-2100 Hz) helps to have a better S/N particularly if you have local QRM.

The radio will interface with soundmodem via a soundcard or virtual audio cable. Soundmodem.exe is located in the \greentnc\usb directory, and is a separate program. This program needs to be configured to connect with your radio’s audio interface. The digipeater software is in the client directory, called GreenCubeDigi.exe. GreenCubeDigi automatically connects to soundmodem via TCP. So you should have two programs running, one the TNC and the other the digi “terminal.”

Ops may add GetKISS+ software, by Mike Rupprecht, DK3WN, in order to upload received packets to SatNOGS. This isn’t necessary, but it does help add coverage for telemetry. This software is a bit tricky to get working, but once you have one of Mike’s programs running other programs will work without any issues. Mike’s software can be found here: https://www.satblog.info/software/

Doug Papay, K8DP, recommends installing GetKISS+ v1.4.1 (he could not get v1.4.2 to work). It requires VB6 runtime, which should already be installed, and the ActiveX OCX controls need to be registered. See: https://www.pe0sat.vgnet.nl/decoding/tlm-decoding-software/dk3wn/ for instructions on how to do this. Make sure to run the command prompt as Administrator when performing the regsrv32.exe commands. Also, do not delete or move the OCX files after registering them. (The OCX files should be placed in C:\Libraries\OCX folder)

Mike also has a GreenCube Telemetry Decoder that you can download—it is a nice program that graphically displays the telemetry. He has also added a digipeater message display and list of unique callsigns heard—a nice feature.

The config.ini files will need to be updated to reflect your station details. These files are located in the folder where you keep GetKISS+ and GreenCube Telemetry Decoder.

GetKISS+ and GreenCube Telemetry Decoder connect via TCP to the soundmodem all using the same IP (localhost) and port number.

Some have been confused by the lack of an ACK message after transmitting a packet to the satellite. It is sent only if the Tx delay is used. However, it is better to use Tx delay 0 for real-time QSOs to avoid unnecessary transmission by the bird (saving on-board power). With Tx delay 0 you will receive your own message as an acknowledgement.

[ANS thanks Doup Papay, K8DP, and Jean Marc Momple, 3B8DU, for the above information]

Categories
Ham Satellite news

CAS-10 Launched to Chinese Space Station

Updated 2022-11-20:
AMSAT-China, or CAMSAT, http://www.camsat.cn, has announced December 18 as the release date for CAS-10/XW-4. Photos of this satellite may be seen at:
https://twitter.com/bd5rv/status/1592978613204586496 and
https://twitter.com/bd5rv/status/1593693879798497285

As previously reported by ANS, CAMSAT’s CAS-10/XW-4 satellite was launched on November 12, 2022, carried on the Tianzhou 5 cargo spacecraft to the Chinese Space Station. The satellite will be active immediately upon deployment into its own 400 km orbit with an inclination of 42.9 degrees. CAS-10 carries a VHF uplink and UHF downlink linear transponder with a bandwidth of 30kHz. Downlink frequencies for VHF/UHF linear transponder 435.180 MHz, for UHF CW telemetry beacon 435.575 MHz and for GMSK telemetry 435.725 MHz. Also an uplink for the transponder 145.870 MHz have been coordinated.

[ANS thanks Michael Chen, BD5RV/4, for the above information]

Repost from ANS-317:

CAMSAT’s CAS-10 (XW-4) satellite was launched on November 12, 2022, carried on the Tianzhou 5 cargo spacecraft to the Chinese Space Station. Deployment from the Chinese Space Station is expected on or about December 15th. The satellite will be active immediately upon deployment into its own 400 km orbit with an inclination of 42.9 degrees.

CAS 10 is an 8U CubeSat approx 228x455x100mm with 12kg Mass. A follow on mission from CAS-9 and also known as Hope-4 (XW-4) Carrying a V/U Mode Linear Transponder, a UHF – CW Telemetry Beacon, a UHF – AX.25 4.8k/9.6kbps GMSK Telemetry downlink and a space camera.

CAS-10 carries a VHF uplink and UHF downlink linear transponder with a bandwidth of 30kHz. This transponder will work all day during the life cycle of the satellite, and amateur radio enthusiasts around the globe can use it for two-way radio relay communications.
CAS-10 carries a camera, and the pictures it takes are stored in the flash memory on the satellite, we have designed a simple remote control system based on DTMF, and amateur radio enthusiasts around the globe can send DTMF commands to download the camera photos.
CW beacon uses Morse code to send satellite telemetry data, which is also a feature that is widely welcomed by amateur radio enthusiasts.

Downlink frequencies for VHF/UHF linear transponder 435.180 MHz, for UHF CW telemetry beacon 435.575 MHz and for telemetry 435.725 MHz. Also an uplink for the transponder 145.870 MHz have been coordinated.

[ANS thanks Alan Kung, BA1DU, CAMSAT, for the above information]