#ISS #SSTV is Back Again!

Technical difficulties during the original test period (03/10/2023 - 05/10/2023) have forced a postponement

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About Gagarin from Space

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: IO81qk
  • Elevation (metres above Ordnance Datum AOD): 64m
  • What.Three.Words: ///Weeks.Exams.Flight

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Notes:

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

 

Pass
No.
Date Acquisition of Signal “AoS” Maximum Elevation Loss of Signal “LoS” Pass Duration
(Min:Sec)
Comments
UK Clock Time Elevation Azimuth
or
Bearing
UK Clock Time Elevation Azimuth
or
Bearing
UK Clock Time Elevation Azimuth
or
Bearing
1 15/10/23 15:02:24 10° WSW 15:04:28 15° SW 15:06:31 10° S 04:07 Daylight
2 16/10/23 07:48:48 10° SSE 07:50:10 12° SE 07:51:33 10° ESE 02:45 Daylight
3 16/10/23 09:23:03 10° SW 09:26:17 46° SSE 09:29:30 10° E 06:27 Daylight
4 16/10/23 10:59:34 10° W 11:02:55 86° N 11:06:16 10° E 06:42 Daylight
5 16/10/23 12:36:19 10° W 12:39:40 71° SSW 12:42:59 10° ESE 06:40 Daylight
 
6 16/10/23 14:13:22 10° W 14:16:02 22° SW 14:18:42 10° SSE 05:20 Daylight
7 17/10/23 08:34:40 10° SW 08:37:43 33° SSE 08:40:47 10° E 06:07 Daylight
8 17/10/23 10:10:54 10° W 10:14:15 87° S 10:17:36 10° E 06:42 Daylight
9 17/10/23 11:47:40 10° W 11:51:01 84° S 11:54:21 10° ESE 06:41 Daylight
10 17/10/23 13:24:31 10° W 13:27:31 31° SSW 13:30:31 10° SE 06:00 Daylight
 
11 18/10/23 07:46:25 10° SSW 07:49:10 24° SSE 07:51:55 10° E 05:30 Daylight
12 18/10/23 09:22:13 10° WSW 09:25:34 74° SSE 09:28:54 10° E 06:41 Daylight
13 18/10/23 10:58:57 10° W 11:02:19 87° N 11:05:40 10° E 06:43 Daylight
14 18/10/23 12:35:43 10° W 12:38:55 43° SSW 12:42:06 10° SE 06:23 Daylight
15 18/10/23 14:14:00 10° WSW 14:15:00 11° SW 14:15:58 10° SSW 01:58 Daylight
 
16 19/10/23 06:58:25 10° S 07:00:38 17° SE 07:02:50 10° E 04:25 Visible
17 19/10/23 08:33:34 10° WSW 08:36:52 58° SSE 08:40:10 10° E 06:36 Daylight
18 19/10/23 10:10:12 10° W 10:13:33 84° N 10:16:55 10° E 06:43 Daylight
19 19/10/23 11:46:56 10° W 11:50:15 58° SSW 11:53:33 10° ESE 06:37 Daylight
20 19/10/23 13:24:17 10° W 13:26:29 16° SW 13:28:40 10° S 04:23 Daylight
 
21 20/10/23 06:11:02 10° SSE 06:12:05 11° SE 06:13:08 10° ESE 02:06 Visible
22 20/10/23 07:44:58 10° SW 07:48:09 43° SSE 07:51:22 10° E 06:24 Daylight
23 20/10/23 09:21:25 10° W 09:24:46 87° N 09:28:07 10° E 06:42 Daylight
24 20/10/23 10:58:09 10° W 11:01:30 74° SSW 11:04:51 10° ESE 06:42 Daylight
25 20/10/23 12:35:09 10° W 12:37:53 24° SW 12:40:38 10° SSE 05:29 Daylight
 
26 21/10/23 06:56:27 10° SW 06:59:27 31° SSE 07:02:28 10° E 06:01 Visible
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.

Original Post Details

Originally scheduled for 03/10/2023 – 05/10/2023 the test activation of the newly installed SSTV equipment on the ISS has been postponed to 16/10/2023 – 20-10/2023 due to technical difficulties.

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

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. 51.4254 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. 2.593882 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. ///weeks.exams.flight); 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. 51.4254);
    • Your Longitude in decimal degrees where +ve is east of the Greenwich Meridian and -ve is west of the Greenwich Meridian (e.g. -2.593882); 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) 202 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.