#ISS MAI-75 #SSTV Targeting December 7 and 8

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MAI-75 SSTV Targeting Dec 7 and 8

Original Post Details

According to a post on the ARISS SSTV Blog it appears that there are plans for another SSTV activity period over 7 – 8 December 2023. This announcement is subject to crew duties and operational constraints on the station.

Posted on Monday 27 November 2023 by ariss-sstv.blogspot.com.

The Moscow Aviation Institute (MAI) will be conducting an SSTV experiment on December 7 and 8 during ISS orbits over Moscow. The scheduled times are listed below and the expected mode is the traditional PD120 using 145.800 MHz as the downlink frequency. It appears the theme for this session will highlight one of MAI’s Cosmonaut graduates, Yuri Usachov.

  • Thursday December 7 2023: Setup and activation about 08:55 UTC. Stop about 14:25 UTC
  • Friday December 8 2023: Start about 08:15 UTC. Turn off and tear down about 14:10 UTC

Note: Dates and times are subject to change due to ISS operational adjustments.

Table of ISS Passes

Address: Novers Park Community Association, Rear of 124 Novers Park Road, Bristol, BS4 1RN

  • Latitude (degrees N-S where North is +ve): 51.425358°
  • Longitude (degrees E-W where East is +ve): -2.593782°
  • IARU (Maidenhead) Locator [Calculated by Spreadsheet]: IO81qk
  • Elevation (metres above Ordnance Datum [AOD]): 64m
  • What.Three.Words: ///Hugs.Sorry.Dime

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Compass Rose English North

In the table below:

  1. Table Entries with a cyan background indicate passes where: 0° < Maximum Elevation ≤ 30°
  2. Table Entries with a yellow background indicate passes where: 30° < Maximum Elevation ≤ 45°
  3. Table Entries with a green background indicate passes where: 45° < Maximum Elevation ≤ 90°
  4. Times are UK clock time, that is GMT/UTC during the winter and BST/UTC+1:00 during the summer
  5. Elevation shows the degrees above the horizon. Zero degrees is the horizon and ninety degrees is directly overhead
  6. Azimuth represents the direction to the ISS using a traditional 16 cardinal point compass rose


Date Acquisition of Signal “AoS” Maximum Elevation Loss of Signal “LoS” Pass Duration
UK Clock Time Elevation Azimuth
UK Clock Time Elevation Azimuth
UK Clock Time Elevation Azimuth
01 07/12/23 10:47:57 10° SSW 10:50:36 22° SE 10:53:15 10° E 05:18 Daylight
02 07/12/23 12:23:37 10° WSW 12:26:57 70° SSE 12:30:18 10° E 06:41 Daylight
03 07/12/23 14:00:20 10° W 14:03:42 86° N 14:07:04 10° E 06:44 Daylight
04 08/12/23 10:00:04 10° S 10:02:05 15° SE 10:04:05 10° ESE 04:01 Daylight
05 08/12/23 11:35:00 10° WSW 11:38:16 54° SSE 11:41:34 10° E 06:34 Daylight
06 08/12/23 13:11:35 10° W 13:14:57 84° N 13:18:19 10° E 06:44 Daylight
07 No Pass Data
08 No Pass Data
09 No Pass Data
10 No Pass Data
11 No Pass Data
12 No Pass Data
13 No Pass Data
14 No Pass Data
15 No Pass Data
16 No Pass Data
17 No Pass Data
18 No Pass Data
19 No Pass Data
20 No Pass Data
21 No Pass Data
22 No Pass Data
23 No Pass Data
24 No Pass Data
25 No Pass Data
26 No Pass Data
27 No Pass Data
28 No Pass Data
29 No Pass Data
30 No Pass Data
31 No Pass Data
32 No Pass Data
33 No Pass Data
34 No Pass Data
35 No Pass Data
36 No Pass Data
37 No Pass Data
38 No Pass Data
39 No Pass Data
40 No Pass Data
41 No Pass Data
42 No Pass Data
43 No Pass Data
44 No Pass Data
45 No Pass Data
46 No Pass Data
47 No Pass Data
48 No Pass Data
49 No Pass Data
50 No Pass Data

Details of how to obtain your own table of pass predictions using either AMSAT or Heavens Above are provided at the end of this post.

Background and Reception of Images

Historically, images are downlinked at 145.800MHz FM +/- 3kHz for Doppler shift and the expected SSTV mode of operation is PD 120. Many FM rigs can be switched been wide and narrow deviation FM filters, for best results you should select the filter for wider deviation FM. Handhelds all seem to have a single wide filter fitted as standard.

There is an official European Space Agency (ESA) video about receiving SSTV from the ISS using the web SDR at Goonhilly for those who don’t have a capability to receive on 145.800MHz. You can see the video here: ESA ISS SSTV Video. For those interested in doing their own reception and decoding either live or after the event using recordings made during the passes for subsequent decoding the AMSAT website has a good primer that will serve as a good reference for those more experienced too.

We encourage you to have a try at receiving and decoding these images, you do not need specialist equipment, Kevin 2E0AWX was successful with just a handheld, set-top whip and Robot36 on a ‘phone within 2 weeks of passing his Foundation exam, and Greg 2W1BUF collected a number of good decoded images using a SDR dongle or a Yaesu FT2900 with MMSSTV. So don’t be put off; give it a try, any images you receive can be included on the Club website if you send them to us; contact details at the bottom of the webpage.

SSTV Programs are available for all platforms so no matter what you use there’s probably something to decode the image:

  • Linux including Raspbian on the Raspberry Pi – QSSTV can be found at users.telenet.be/on4qz/qsstv/index.html if you want the absolute latest version. However Debian based distros such as Ubuntu, Mint and others almost certainly will have QSSTV in their repositories as will other mainstream distros and the repository version is usually more than adequate.
  • Windows – MMSSTV can be found at hamsoft.ca/pages/mmsstv.php.
  • Mac OSX – MultiScan can be found at www.qsl.net/kd6cji.
  • Android – Robot36 can be installed from the PlayStore and includes both PD180 and PD120. Not sure what minimum version of Android it wants but it runs without issue on Android 6 which is reasonably long in the tooth.
  • iOS – Black Cat Systems sstv-slow-scan-tv.

For those who like real time information the Android App AmSatDroid Free is one of a number of live satellite trackers available for Android. Similar apps are available for iOS, a simple example is ISS Spotter.

How to Obtain Your own Pass Predictions

If you want to run your own location specific pass predictions try using:

The AMSAT site will require either:

  • Method 1
    • Your 6 character IARU (Maidenhead) locator square (e.g. IO81qk); and
    • Your elevation in metres (e.g. 64).
  • Method 2
    • The absolute (without +ve or -ve sign) value of your Latitude in decimal degrees and selecting North where the original value is positive (greater than 0) or selecting South where the original value is negative (less than 0) (e.g. 51.425358 North);
    • The absolute (without +ve or -ve sign) value of your Longitude in decimal degrees and selecting East where the original value is positive (greater than 0) or selecting West where the original value is negative (less than 0) (e.g. 2.593782 West);
    • Your elevation in metres (e.g. 64).

The Heavens Above site is more flexible and will accept any of:

  • Method 1
    • Your address including postcode (e.g. Novers Park Community Association, Rear of 124 Novers Park Road, Bristol, BS4 1RN); and
    • Your elevation in metres (e.g. 64).
  • Method 2
    • Your What.Three.Words location descriptor (e.g. ///hugs.sorry.dime); and
    • Your elevation in metres (e.g. 64).
  • Method 3
    • Your Latitude in decimal degrees where +ve is north of the equator and -ve is south of the equator (e.g. 51.425358);
    • Your Longitude in decimal degrees where +ve is east of the Greenwich Meridian and -ve is west of the Greenwich Meridian (e.g. -2.593782); and
    • Your elevation in metres (e.g. 64).

When using Heavens Above don’t forget to check that you have the correct timezone (e.g. (GMT +0:00) United Kingdom/Ireland).

Heavens Above understands British Summer Time and corrects accordingly.

About Andy (G7KNA) 199 Articles
BEng CEng MICE. Chartered Civil Engineer and Licensed Radio Ham (G7KNA). Member of South Bristol Amateur Radio Club since 2005 and Secretary since 2010. Away from the club and work I play with computers and related gadgets exploring Open Source software and when necessary bodge the odd DIY project.