Blog: New Chinese linear satellite XW-3 and its issues
Link:
https://spacecomms.wordpress.com/2022/01/02/new-chinese-linear-satellite-xw-...
(XW-3 aka HO-113)
73, John Brier KG4AKV
Thanks John. Very informative post.
Just took a 15 minute, 8 deg max elevation pass and the beacon was exactly where it should be (time wise) and solid for the entire pass. Pity I don't copy morse by ear. I'll get fldigi connected perhaps for the next pass.
On 01/01/2022 20:21 John Brier johnbrier@gmail.com wrote:
Link:
https://spacecomms.wordpress.com/2022/01/02/new-chinese-linear-satellite-xw-...
(XW-3 aka HO-113)
73, John Brier KG4AKV
Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/amsat-bb@amsat.org To unsubscribe send an email to amsat-bb-leave(a)amsat.org Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org
Nigel A. Gunn, ///shoulders.outwards.resolutions tel +1-937-971-0366 Amateur Radio G8IFF W8IFF and GMRS WRBV701, e-mail nigel@ngunn.net www http://www.ngunn.net
You're welcome.
Glad to hear the beacon sounds good on your end and is at the right frequency.
Hope to work you on the birds sometime.
73, John Brier KG4AKV
On Sat, Jan 1, 2022 at 8:58 PM Nigel A. Gunn G8IFF/W8IFF nigel@ngunn.net wrote:
Thanks John. Very informative post.
Just took a 15 minute, 8 deg max elevation pass and the beacon was exactly where it should be (time wise) and solid for the entire pass. Pity I don't copy morse by ear. I'll get fldigi connected perhaps for the next pass.
On 01/01/2022 20:21 John Brier johnbrier@gmail.com wrote:
Link:
https://spacecomms.wordpress.com/2022/01/02/new-chinese-linear-satellite-xw-...
(XW-3 aka HO-113)
73, John Brier KG4AKV
Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/amsat-bb@amsat.org To unsubscribe send an email to amsat-bb-leave(a)amsat.org Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org
Nigel A. Gunn, ///shoulders.outwards.resolutions tel +1-937-971-0366 Amateur Radio G8IFF W8IFF and GMRS WRBV701, e-mail nigel@ngunn.net www http://www.ngunn.net
Here's a partial frame, captured with FLDIGI.
*AS9 DFH DFH ATU 102 TNT 090 TTV 003 ATA 101 TAT 010 AA4 114 VD6 386 ET6 506 VDD 388 VUN 329 VUD 328 TVU 032 AV6 136 ANU 192 TD6 086 EA4 514 U6N 269 TTT 000 TTT 000 TVT 030 TAN 019 TU4 024 TAU 012 TAV 013 ----Suspect below---- ATA 101 V TT4 004 TTT 000 TTT 000 TTU 002 ----Suspect above---- CAMSAT CAMSAT
On 01/01/2022 20:58 Nigel A. Gunn G8IFF/W8IFF nigel@ngunn.net wrote:
Thanks John. Very informative post.
Just took a 15 minute, 8 deg max elevation pass and the beacon was exactly where it should be (time wise) and solid for the entire pass. Pity I don't copy morse by ear. I'll get fldigi connected perhaps for the next pass.
On 01/01/2022 20:21 John Brier johnbrier@gmail.com wrote:
Link:
https://spacecomms.wordpress.com/2022/01/02/new-chinese-linear-satellite-xw-...
(XW-3 aka HO-113)
73, John Brier KG4AKV
Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/amsat-bb@amsat.org To unsubscribe send an email to amsat-bb-leave(a)amsat.org Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org
Nigel A. Gunn, ///shoulders.outwards.resolutions tel +1-937-971-0366 Amateur Radio G8IFF W8IFF and GMRS WRBV701, e-mail nigel@ngunn.net www http://www.ngunn.net
Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/amsat-bb@amsat.org To unsubscribe send an email to amsat-bb-leave(a)amsat.org Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org
Nigel A. Gunn, ///shoulders.outwards.resolutions tel +1-937-971-0366 Amateur Radio G8IFF W8IFF and GMRS WRBV701, e-mail nigel@ngunn.net www http://www.ngunn.net
John,
Just worked another pass on XW-3. More observations:
My current setup is as follows: FT-847 RHCP 12 elements on 2m for uplink running 50W thru LM400 RHCP 26 elements on 70cm for downlink thru LM600 along with a 20dB LNA with 0.8dB NF
I can barely hear my downlink (or any other downlink for that matter). The beacon is stronger – but not booming. This last pass was 38.8 degs at max elevation…. And was barely even tickling the S-meter. I slewed the beam (while listening to the beacon) to make sure I was pointed correctly and found no improvement except where MacDoppler said I should be pointing (i.e. the Keps are correct).
As for the comment in the article when comparing the beacon to other CAS satellites (I believe they are on 2m) that only equates to only 4.7dB (10*log(145.9Mhz/435.2MHz). While I agree that there is additional path loss, it is not even an S unit (6-dB) on the rig so is barely noticeable in this instance.
Herb
On 1/1/22, 7:21 PM, "John Brier" johnbrier@gmail.com wrote:
Link:
https://spacecomms.wordpress.com/2022/01/02/new-chinese-linear-satellite-xw-...
(XW-3 aka HO-113)
73, John Brier KG4AKV
-----------------------------------------------------------
Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/amsat-bb@amsat.org To unsubscribe send an email to amsat-bb-leave(a)amsat.org Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org
participants (3)
-
John Brier -
Nigel A. Gunn G8IFF/W8IFF -
William Herbert Sims