Planned SSTV Activity From the ISS 4 – 5 August 2020

http://ariss-sstv.blogspot.com/ reports

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 the AMSAT website has a good primer that will serve as a good reference for those more experienced too.

Posted on Monday, July 27, 2020 by ariss-sstv.blogspot.com.

MAI-75 SSTV activity planned for Aug 4 and 5, 2020

The final crew schedule for the week of Aug 3-9 was released recently and it showed a MAI-75 activity scheduled for Aug 4 and 5. This is soon after the Space X Demo-2 undock so changes to that event could impact the schedule.

The current dates and times of the activity are as follows:

  • Aug 4 (12:25-18:10 UTC) is setup and day 1 operations; and
  • Aug 5 (08:15-18:25 UTC) is day 2 operations and close out.

A table of approximate pass times, durations and directions is provided in the table at the bottom of this post. The table is based on the Clubhouse as its location but it should be accurate enough for most people in and around Bristol. The further you are from the Clubhouse the greater the error. If you are planning on using the Gooonhilly Web SDR as a receiver as described in the ESA video linked to at the top of this page then you are advised to run your own pass predictions as shown in the ESA video or outlined at the bottom of this page.

This is the Moscow Aviation Institute SSTV experiment that is activated for orbital passes over Moscow, Russia. It has traditionally been PD-180 or PD-120 and transmitting on 145.800 MHz. Most recent SSTV activity has employed PD-120 but many SSTV programs have an auto-detect mode facility.

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.
  • 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 now 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 since they’re up to 10 now.
  • iOS – Black Cat Systems sstv-slow-scan-tv.

Table of ISS Passes

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

Latitude (degrees N-S where North is +ve): 51.425400°
Longitude (degrees E-W where East is +ve): -2.593882°
Elevation (metres Above Ordnance Datum AoD): 64m

Notes:

In the table below:

  1. Table Entries with no background colour 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. Azimuth or Bearings are measured in degrees clockwise from North
Pass No. Date (UTC) Acquisition of Signal “AoS” Maximum Elevation Loss of Signal “LoS” Pass Duration
(Hr:Min:Sec)
Time (UTC) Azimuth or Bearing Degrees Above the Horizon Azimuth or Bearing Time (UTC) Azimuth or Bearing
1 04/08/20 12:44:07 190 11 130 12:52:51 83 00:08:44
2 04/08/20 14:19:15 233 41 140 14:29:58 76 00:10:43
3 04/08/20 15:55:49 264 87 318 16:06:46 85 00:10:57
4 04/08/20 17:32:39 281 76 196 17:43:35 108 00:10:56
5 05/08/20 11:57:26 176 6 135 12:04:56 88 00:07:30
6 05/08/20 13:31:54 224 29 171 13:42:24 76 00:10:30
7 05/08/20 15:08:15 257 84 183 15:19:12 81 00:10:57
8 05/08/20 16:45:05 278 87 224 16:56:02 101 00:10:57
9 05/08/20 18:21:52 284 33 192 18:32:27 133 00:10:35
10 No Viable Pass Data
11 No Viable Pass Data
12 No Viable Pass Data
13 No Viable Pass Data
14 No Viable Pass Data
15 No Viable Pass Data
16 No Viable Pass Data
17 No Viable Pass Data
18 No Viable Pass Data
19 No Viable Pass Data
20 No Viable Pass Data
21 No Viable Pass Data
22 No Viable Pass Data
23 No Viable Pass Data
24 No Viable Pass Data
25 No Viable Pass Data
26 No Viable Pass Data
27 No Viable Pass Data
28 No Viable Pass Data
29 No Viable Pass Data
30 No Viable Pass Data
31 No Viable Pass Data
32 No Viable Pass Data
33 No Viable Pass Data
34 No Viable Pass Data
35 No Viable Pass Data
36 No Viable Pass Data
37 No Viable Pass Data
38 No Viable Pass Data
39 No Viable Pass Data
40 No Viable Pass Data
41 No Viable Pass Data
42 No Viable Pass Data
43 No Viable Pass Data
44 No Viable Pass Data
45 No Viable Pass Data
46 No Viable Pass Data
47 No Viable Pass Data
48 No Viable Pass Data
49 No Viable Pass Data
50 No Viable Pass Data

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) 115 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. I am a registered RSGB Assessor for Foundation, Intermediate and Advanced Exams. 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.