ISS SSTV experiment The Russian Federal Space website lists the International Space Station (ISS) MAI-75 experiment (Slow Scan TV on 145.800 MHz) taking place from Wednesday January 27 to Friday January 29. This may mean Amateur Slow Scan TV (SSTV) may take place on one or more of these days. Previous activations of the SSTV system have produced some good images that can be seen on the ARISS SSTV picture gallery site.
The ISS puts out a strong signal on 145.800 MHz FM and a 2m handheld with a 1/4 wave groundplane antenna will be enough to receive it. The FM transmission uses 5 kHz deviation which is standard in much of the world.
Many FM rigs in the UK can be switched between wide and narrow deviation FM filters so select the wider deviation. Handhelds all seem to have a single wide filter fitted as standard.
Free PC sound card Slow Scan TV software such as MMSSTV can be used to display the pictures and you can use software such as the IZ8BLY Vox Recoder to save the audio for later decoding if you are away at work.
Russian Federal Space - ISS Experiments January 25-31 (Google English)
http://tinyurl.com/yhy49t4
Information on the MAI-75 SSTV experiment
http://www.energia.ru/eng/iss/resear...cation-26.html
How to access the ISS Slow Scan TV
http://www.marexmg.org/fileshtml/howtoisssstv.html
Free Slow Scan TV Software MMSSTV uses your PCs Soundcard
http://mmhamsoft.amateur-radio.ca/
IZ8BLY Vox Recoder, enables you to record the signals from the ISS on 145.800 MHz while you're away at work
http://xoomer.alice.it/aporcino/VoxRecorder/
ISS Real Time Tracking (tick draw footprint)
http://www.n2yo.com/?s=25544
Amateur Radio on the International Space station (ARISS) SSTV picture gallery
http://www.amsat.org/amsat/ariss/SSTV/
ISS Fan Club
http://www.issfanclub.com/
AMSAT-UK publish a colour A4 newsletter, OSCAR News, that is full of Amateur Satellite information.
Join online at https://secure.amsat.org.uk/subs_form
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Thursday, January 28, 2010
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HOW TO READ PROPAGATION NUMBERS
The A index [ LOW is GOOD ]
- 1 to 6 is BEST
- 7 to 9 is OK
- 11 or more is BAD
Represents the overall geomagnetic condition of the ionosphere ("Ap" if averaged from the Kp-Index) (an average of the eight 3-hour K-Indices) ('A' referring to amplitude) over a given 24 hour period, ranging (linearly) typically from 1-100 but theoretically up to 400.
A lower A-Index generally suggests better propagation on the 10, 12, 15, 17, & 20 Meter Bands; a low & steady Ap-Index generally suggest good propagation on the 30, 40, 60, 80, & 160 Meter Bands.
SFI index [ HIGH is GOOD ]
- 70 NOT GOOD
- 80 GOOD
- 90 BETTER
- 100+ BEST
The measure of total radio emissions from the sun at 10.7cm (2800 MHz), on a scale of 60 (no sunspots) to 300, generally corresponding to the sunspot level, but being too low in energy to cause ionization, not related to the ionization level of the Ionosphere.
Higher Solar Flux generally suggests better propagation on the 10, 12, 15, 17, & 20 Meter Bands; Solar Flux rarely affects the 30, 40, 60, 80, & 160 Meter Bands.
K index [ LOW is GOOD ]
- 0 or 1 is BEST
- 2 is OK
- 3 or more is BAD
- 5 is VERY VERY BAD
The overall geomagnetic condition of the ionosphere ("Kp" if averaged over the planet) over the past 3 hours, measured by 13 magnetometers between 46 & 63 degrees of latitude, and ranging quasi-logarithmically from 0-9. Designed to detect solar particle radiation by its magnetic effect. A higher K-index generally means worse HF conditions.
A lower K-Index generally suggests better propagation on the 10, 12, 15, 17, & 20 Meter Bands; a low & steady Kp-Index generally suggest good propagation on the 30, 40, 60, 80, & 160 Meter Bands.
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I am not responsible for any thing that happens to your mental health, computer and all personal property because you visited my site.
This site is a collection of some things sent to me by e-mail, obtained from other blogs and the internet. If there is a picture or quote that is copyrighted to you let me know and I will remove your item .
Thoughts expressed in my blog are just that . I give My Opinion on the many events, products and how too, reported by the media and other web-sites.
Do not use this blog site to obtain weather events or disasters information. What I post may not be correct. Always get information from the proper media, weather (NWS)(NOAA)
Pacific Tsunami Warning Center and USGS sites
