Thursday, October 27, 2022

Polar APT, Digital and Geostationary Weather Satellites Weekly Status Report 24 Oct 2022


Author  : Douglas S Deans E-mail  : gm4vzy@googlemail.com
Twitter : Douglas Deans @GM4VZY

Sections 1 and 2 have an update.

SECTION 1: POLAR APT/LRPT REPORT – 24th October 2022.

INFORMATION and UPDATES.
NOAA 15 has AVHRR scan motor issues. Poor imagery.
Satellite    Frequency (MHz)    Status   Image Quality

NOAA 15        137.620  (APT)     on periods of synch problems
NOAA 18        137.9125 (APT)    on         good
NOAA 19        137.100  (APT)     on         good
Metop-B                             No LRPT service
Metop-C                 No LRPT service
Meteor M N2    137.100 (LRPT)  on QPSK, 72k
Meteor M N2-2  137.900 (LRPT)  off     (see Note 7). OQPSK,  72k

NOTES.
1. NOAA 14 was decommissioned on 23rd May 2007.
2. NOAA 12 was decommissioned on 10th August 2007.
3. NOAA 17 was decommissioned on 10th April 2013.
4. NOAA 16 was decommissioned on 9th June 2014.
5. Metop-A end-of-life switch off on 15th November 2021.
6. Elements are available from- http://www.space-track.org and
7. Meteor M N2-2 has likely been hit by a micro-meteorite. It has changed orbit and been de-pressurized. Although under control again the thermal balance is an issue and the main problem is overheating of the batteries which keep switching to backup. LRPT transmitter cannot operate under those arrangements and is off permanently.
LAUNCHES.
Meteor M N2-3 launch date is unknown.

SECTION 2: POLAR HRPT/AHRPT REPORT – 24th October 2022.

INFORMATION and UPDATES.
NOAA 15 has AVHRR scan motor issues. Poor imagery.

Satellite    Frequency  Antenna    Mode     Image Quality
NOAA 15       1702.5     Omni      HRPT   Weak(periods of problems)
NOAA 18       1707.0     RHCP      HRPT      Good
NOAA 19       1698.0     RHCP      HRPT      Good
Feng Yun 3A   1704.5     RHCP  see note 6.
Feng Yun 3B   1704.5     RHCP  see note 6. Off
Feng Yun 3C   1701.4     RHCP  see note 9.  Off.
Feng Yun 3D   7820  see note 11.
Feng Yun 3E   7860  commissioning  see note 11.
Metop-B       1701.3     RHCP      AHRPT      Good.
Metop-C       1701.3     RHCP      AHRPT
Meteor M N2   1700.0 see Note 7.  on
Meteor M N2-2 1700.0 see note 7 and 10        on
NPP see Note 8.
NOAA 20  see Note 8.
Arktika-M1 see Note 12
NOTES.

1. NOAA 14 was decommissioned on 23rd June 2007.
2. NOAA 12 was decommissioned on 10th August 2007.
3. NOAA 17 was decommissioned on 10th April 2013.
4. NOAA 16 was decommissioned on 9th June 2014.
5. Metop-A end-of-life switch off on 15th November 2021.
6. I am also grateful to Dave Wright of Dartcom for confirming that unfortunately (as usual) the Chinese have not strictly complied with the CGMS AHRPT Global Standard so reception using a standard Metop AHRPT receiver is not possible.
Update: The second in the series, Feng Yun 3B was launched on 4th November 2010. I expect the information above for 3A will equally apply to 3B.
My thanks to Johnny Lin for drawing this to my attention.
7. It appears that Meteor M N2 and M N2-2 are neither using full HRPT or AHRPT and cannot be received using standard receivers. Please see other emails for further explanation:-
8. As those weather satellites have no S-band transmitter, they are included for information only.
9. I am grateful to David Wright of Dartcom (http://www.dartcom.co.uk) for providing up-to-date information for Feng Yun 3C. Now fully operational but the Chinese have changed the data rate compared to FY-3A and FY-3C DB downlink data rate is 3.9 Mbps after RS Encoding.
The frequency is also different - it is 1701.3 MHz same frequency as Metop A/B. It still requires a special AHRPT receiver like FY-3A/B. They have also changed the polarization of the X-band downlink to LHCP.
10. Meteor M N2-2 has likely been hit by a micro-meteorite. It has changed orbit and been de-pressurized. Although under control again the thermal balance is an issue and main problem is overheating of the batteries which keep switching to backup. AHRPT is on when
spacecraft (solar panels) are illuminated.
11. Although AHRPT is not available on FY-3D/3E on the 1700 MHz band as with previous satellites of the series it is available on 7820/60 MHz. There are amateurs with working systems on those frequencies so I have added the satellite for information.
12  Arktika-M1 is in a specialised Molnyia orbit. For more information please see :-
LAUNCHES.
Meteor M N2-3 launch date is unknown.

SECTION 3: GEOSTATIONARY REPORT – 24th October 2022.

INFORMATION and UPDATES.
None.
Europe & Africa

Satellite : Meteosat 9 (3.5° E).
Data :      HRIT and LRIT(digital).
Operational : Hot FES standby. No LRIT.
Satellite : Meteosat 10 (9.5°E).
Data : HRIT (digital) and LRIT (digital)
Operational : Yes. Prime RSS satellite. No LRIT.
Satellite : Meteosat 11 (0°).
Data :      HRIT and LRIT(digital).
Operational : Yes Prime 0° FES satellite. No LRIT.
North America

East.
Satellite: GOES 16 (75.2° W).
Data :  GRB  - 1686.6 MHz.
HRIT - 1694.1 MHz.
Operational: yes.

West.
Satellite : GOES 17 (137.3° W).
Data:  GRB   - 1686.6MHz.
HRIT: - 1694.1MHz.
Operational: Yes.

Satellite: GOES 15 (128° W).
Data : GVAR (digital) - 1685.7 MHz
LRIT (digital) - 1691 MHz
Operational : Yes.(In parallel with GOES 17).

Satellite: GOES 14 (105°W).
Data : GVAR (digital) - 1685.7 MHz
LRIT (digital) - 1691 MHz
Operational: Standby.

Satellite: GOES 13 (61.6 E).
Data: GVAR (digital) - 1685.7 MHz
LRIT (digital) - 1691 MHz
Operational: Repurposed by US Space Force. See :-

Satellite: GOES 18 (137.0°W).
Data:  GRB   - 1686.6MHz.
HRIT: - 1694.1MHz.
Operational: No. PLT Phase 2 is underway and data is interleaved with GOES 17.

Asia (Russian Operated Satellite)

Satellite : ELECTRO-L (14.5°W)
Data : HRIT/LRIT.
Operational : No

Satellite : ELECTRO-L2 (14.5° W)
Data : HRIT/LRIT.
Operational : No (but transmitting)

Satellite : ELECTRO-L3 (76° E)
Data : HRIT/LRIT.
Operational : Yes.
Asia (European Operated Satellites)

Satellite : Meteosat 8 (41.5°E).
Data : HRIT (digital) and LRIT (digital).
Operational : Yes. Operating IODC. There is no direct readout LRIT.
Asia (Indian Operated Satellite)

Satellite: Insat 3D (82° E).
Data : HRIT/LRIT 4781 MHz
Sounder 4798 MHz.
Operational : Yes.
Satellite: Insat 3DR (74° E).
Data : HRIT/LRIT 4781 MHz.
Sounder 4798 MHz.
Operational : Yes.
Asia (Korean Operated Satellite)
Satellite : COMS (128.2° E)
Data : HRIT (digital) and LRIT (digital)
Operational : No. Standby
Satellite : GEO-KOMPSAT-2A. (128.2° E)
Data :  HRIT (digital) - 1695.4 MHz.
LRIT (digital) - 1692.14 MHz
UHRIT (digital) - 8070 Mhz (DVB-S2)
Operational : Yes.

Asia & Oceania (Japanese Operated Satellites)

Satellite : MTSAT-1R (140° E) (note 4.)
Data : HRIT (digital) - 1687.1 MHz.
LRIT(digital) - 1691 MHz.(Note 5.)
Operational : No.

Satellite : MTSAT-2 (145° E).
Data : HRIT (digital) - 1687.1 MHz
LRIT(digital) - 1691 MHz.
Operational : Yes

Satellite : Himawari 8 (140.7° E).
Data : No direct dissemination.
Satellite downlink only on 18.1 - 18.4 GHz (raw). Data only available via HimawariCast service.
Operational : Yes.
Satellite : Himawari 9 (140.7° E).
Data : No direct dissemination.
Satellite downlink only on 18.1 - 18.4 GHz (raw). Data only available via HimawariCast service.
Operational : No. Standby (expected operational 2022).
Asia & Oceania (Chinese Operated Satellites)

Satellite : Feng Yun 2E (86.5°E).
Data : SVISSR (digital) and LRIT (digital)
Operational : No.

Satellite: Feng Yun 2F (112.5° E).
Data: SVISSR (digital) and LRIT (digital).
Operational: Standby but used for regional scanning.

Satellite: Feng Yun 2G (99.5° E).
Data: SVISSR (digital) and LRIT (digital).
Operational:  Yes. (from 16/04/18 09.00 UTC).

Satellite: Feng Yun 2H (79° E)
Data:  SVISSR (digital) and LRIT (digital)
Operational: Yes.

Satellite: Feng Yun 4A (99.5° E).
Data: HRIT (digital) and LRIT (digital).
Operational : Yes.

Satellite: Feng Yun 4B.
Data:  HRIT (digital) and LRIT (digital).
Operational: No. Just launched.

NOTES.

1. Meteosat 7 stopped its 0° service at 09.00 UTC on 14th June 2006.
2. Insat 3A is a combined data and meteorological satellite.
3. For those interested in EMWIN data, the following sats/frequencies apply.
GOES 15 (128° W)   1692.7 MHz
GOES 16 (75.2° W)  1694.1 MHz
GOES 17 (137.2° W) 1694.1 MHz
For further info. there are many sources but the following is informative:-
4. This satellite is also known as HIMAWARI 6.
5. HiRID and WEFAX were discontinued on 12th March 2008. It was replaced with HRIT/LRIT (after many months of dual dissemination).
6. GOES-12 was decommissioned on 16th August 2013.

LAUNCHES.
MTG-I1 launch is expected towards the end of the year but not yet on Ariane manifest.

SECTION 4: Weather Satellites on 7800 MHz(X-band) – 24th October 2022.

INFORMATION and UPDATES.
None.

Satellite  Frequency  Service  Bandwidth  Polarisation
Metop-A    7800 MHz    GDS    63000 kHz   RHCP
Metop-B    7800 MHz    GDS    63000 kHz   RHCP
Metop-C    7800 MHz    GDS    63000 kHz   RHCP
NOAA 20    7812 MHz    HRD    32000 kHz   RHCP
SNPP       7812 MHz    HRD     30000 kHz   RHCP
FY-3B      7775 MHz    MPT     45000 kHz   RHCP off
FY-3C      7780 MHz    MPT     45000 kHz   LHCP
FY-3D      7820 MHz    FRD    100000 kHz   RHCP

NOTES.
1. Reports for all sections should be sent to:- Douglas Deans. gm4vzy@googlemail.com

GENERAL

For further weather satellite-related information join GEO, Group for Earth Observation. See :- http://www.geo-web.org.uk/

To download element sets for all satellites visit the following sites: http://www.space-track.org and http://celestrak.com/NORAD/elements/

For further information about Eumetsat's Eumetcast service please see:-
And service notifications are here:- https://uns.eumetsat.int/

Thursday, September 22, 2022

DX Central YouTube channel begins Season 3, on September 23

                                                     


On Friday, September 23, 2022, at 6:45 PM (CDT) (2345 UTC) DX Central begins its third season on the air. The highly popular YouTube channel, hosted by Loyd Van Horn, from North Shore studios in Mandeville, Louisiana, specializes in AM and FM DX, equipment reviews, airchecks, tips, tricks, and how-to videos.  

Loyd is the 2022 International Radio Club of America (IRCA) Ric Heald award winner for his support of the AM radio hobby.

New to the hobby? Learn more about DX with his DX 101 pages at dxcentralonline.com. Find out about AM DX Home on the Road videos, AM DX Airchecks-By State, and MUCH MORE!

Did you miss the DX Central Live - Season 3 Live Stream Run Through? Go to https://www.youtube.com/watch?v=xG6Vjl83UAg as well as links of not to be missed past editions.

Follow on Twitter at DX Central (Loyd Van Horn W4LVH) @DXCentral

Follow on Instagram @DXCentral 

Subscribe to DX Central at  https://www.youtube.com/c/DXCentral

DX Central Archive editions: 

DX 101 Spreadsheets and Logbook Analysis for AM https://www.youtube.com/watch?v=2gPe0fnvgKo

DX 101 Reviewing SDR recordings for AM/FM DX https://www.youtube.com/watch?v=Lm5--fpCzj0

DX 101 The Top 10 Countries From North/South America You Can Try to Hear TONIGHT https://www.youtube.com/watch?v=Lm5--fpCzj0 https://www.youtube.com/watch?v=9qzRlI_rviA


                                             DX Central ... Because we’re all about radio!

Saturday, June 25, 2022

Microtelecom announces next-gen SDR - Perseus22 receiver


https://microtelecom.it/en

The Perseus22 SDR is a 4-channel, direct sampling receiver with continuous frequency coverage from 10 kHz to 225 MHz and a typical image rejection larger than 70 dB.

All channels are synchronously sampled by a high SNR, 14 bits A/D converter and processed by a software-defined digital down converter, implemented on an FPGA, which outputs are routed to the host PC by a USB 3.0 controller, allowing wide-bandwidth IF applications.

The frequency coverage is split up in 2 groups of channels (two for the VLF-HF frequency range, the others for VHF), each one capable of diversity, which can reduce noise in order of tens dB. All channels include an analog RF frontend equipped with attenuators, preselection filters, and amplifiers.
The receiver enclosure is machined from solid aluminum and finished with a fine, non-reflecting, black surface treatment. 

At the present time, the unit is awaiting FCC-type acceptance and no definitive pricing is available. The target date for release is October 2022.


Thursday, May 05, 2022

18th Edition of the Global Radio Guide (Summer 2022) Now Available

 Press Release:                                                                         

Teak Publishing Company 

P.O. Box 297

Brasstown NC 28902

www.teakpublishing.com

 

For Immediate Release                                                           Thursday, May 5, 2022

 

 


Familiar players and familiar places. 

Familiar fears pushed by familiar voices.

The world has held its breath during the Russian invasion of Ukraine as images of the human suffering of war have brought back old memories and old fears from years gone by.

Just like these events have brought up once buried feelings, it has also brought what many thought to be “old” technology back to the forefront.  While internet access is one of the first targets of invading regimes intent on controlling the narrative, the vast reach of shortwave radio transcends borders and other forms of connectivity.

It is déjà vu with a front-row view.

For those who want to be on the front lines of the action, Gayle Van Horn’s (W4GVH) 18th Edition of her Amazon bestselling Global Radio Guide (Summer 2022) has all of the details you need to catch up with the latest from the front lines.

As one of the only remaining publications available with international broadcast frequencies and schedules, the Global Radio Guide (GRG) puts everything a radio enthusiast needs to navigate the action right in their hands.

In this completely updated edition, regular GRG contributors Ken Reitz, KS4ZR, and Fred Waterer (both also of The Spectrum Monitor) post feature on monitoring the international broadcasters at the very forefront of the events.  Larry Van Horn, N5FPW, adds his detailed information on monitoring of utilities on the shortwave bands, including military communications. 

With the help of the GRG, you can tune in to shortwave broadcast stations from additional hotspots such as China, Cuba, India, Iran, North/South Korea, Taiwan, and many other counties. If you have a shortwave radio receiver, SDR or Internet connection, pair it with this unique radio resource to know when and where to listen to the world.

This newest edition of the GRG carries on the tradition of those before it with an in-depth, 24-hour station/frequency guide with schedules for selected AM band, longwave, and shortwave radio stations. This unique resource is the only radio publication that lists by-hour schedules that include all language services, frequencies, and world target areas for over 500 stations worldwide.

The GRG includes listings of DX radio programs and Internet website addresses for many of the stations in the book. There are also entries for time and frequency stations as well as some of the more “intriguing” transmissions one can find on the shortwave radio bands.

In addition to the global hotspots, the GRG brings the world to you from other places on the radio dial.

Gayle Van Horn brings us into the tropics with her regular stroll through the tropical bands – one of the most challenging and rewarding pursuits for the shortwave listener.

Not only are the bands heating up with world events, but the HF bands themselves are becoming more alive as our sun wakes up from its slumber.  What impact will this renewed solar activity have on listening?  Tad Cook, K7RA, shares his atmospheric expertise with a primer on radio propagation while maintaining an eye on the ever-evolving Solar Cycle 25. 

A bit lower on your radio dial, DX Central’s Loyd Van Horn, W4LVH, breaks down the basics of getting started with mediumwave DX and even gives us a fun summer project by diving into the powerful KAZ antenna that listeners can use to pull in elusive mediumwave signals from far beyond their home.

Whether you monitor shortwave radio broadcasts, mediumwave, amateur radio operators, or aeronautical, maritime, government, or military communications in the HF radio spectrum, this book has the information you need to help you to hear it all. Teak Publishing’s Global Radio Guide "brings the world to you."

You can find this edition of the Global Radio Guide, along with all of our titles currently available for purchase, on the Teak Publishing Web site at www.teakpublishing.com.  Details will be available at www.teakpublishing.com.

The 18th edition of the Global Radio Guide e-Book (electronic book only, no print edition available) is available worldwide from Amazon and their various international websites at

https://www.amazon.com/dp/B09ZK1HWFY/

 

The price for this latest edition is US$8.99. Since this book is being released internationally, Amazon customers in the United Kingdom, Germany, France Spain, Italy, Japan, India, Canada, Brazil, Mexico, and Australia can order this e-Book from Amazon websites directly servicing these countries. Customers in all other countries can use the regular Amazon.com website to purchase this e-Book.

 

You can read any Kindle e-Book with Amazon’s ‘free’ reading apps on literally any electronic media platform. You do not have to own a Kindle reader from Amazon to read this e-book. There are Kindle apps available for iOS, Android, Mac, and PC platforms. You can find additional details on these apps by checking out this link to the Amazon website at www.amazon.com/gp/feature.html?ie=UTF8&docId=1000493771.