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Getting started with Amature FM Satellites

By Yanko, NX9G


Opinions expressed here are solely my own, and do not express the views or opinions of my employer Internap Corp.


What is a amature satellite ?


Mass ≈ 419,725 kg (925,335 lb)Length 72.8 m (239 ft) Width 108.5 m (356 ft) Height ≈ 20 m (66 ft) Altitude 205 to 270 Mi

International space station


Mass 28.8 kilograms (63 lb)Dimensions 36.0cm x 42.4cm octahedron

AO-7


Mass 1.3 kilograms (2.9 lb) Dimensions (3.9 in × 3.9 in × 3.9 in)

Fox-1A


What do we need to get started ?


Any kind of 2m/70cm FM radio


Ultimately , two different radios for full duplex operation

2m tx 70cm rx


Elkantennas.com

Antennas

Arrowantennas.com 2M DF antenna by KC0TKS


Duplexer

Comet1.3-170MHz

350-540MHz


Audio recorderthat can tag each

recording with date and time

Sony ICDPX370 $46 at best buy


I’m using Voice recorder android app


Satellite Tracking Software


PC software

$50 at Amsat.org


PC software

HRD 5.24free


Mac software

MacDoppler$98


LinuxSoftware

gpredict

Free


Androidsoftware

Amsatdroid Free


Web software

Free


Your grid square

My grid is en61aw


You can find your grid

Gps in your phone. Android has a app called hamgps

On the interent . http://www.levinecentral.com/ham/grid_square.php



Hamgps



Internet http://www.levinecentral.com/ham/grid_square.php


Program your radio for the current FM satellites



• SO-50 (SaudiSat-1C)• AO-85 (Fox-1A)• AO-91 (RadFxSat / Fox-1B)• AO-92 (Fox-1D)• LilacSat-2 (CAS-3H) Transponder activations sporadic• IO-86 (LAPAN-A2) In equatorial orbit, activations by schedule• ISS – International space station


Program your radio for the current FM satellites SO-50 (SaudiSat 1C)


Program your radio for the current FM satellites AO-85 (Fox-1A)


Program your radio for the current FM satellites AO-91 (RadFxSat / Fox-1B)


Program your radio for the current FM satellites AO-92 (Fox-1D)


Program your radio for the current FM satellites LilacSat-2 (CAS-3H)

No CTCSS tone on tx



IO-86 (LAPAN-A2)

No CTCSS tone on tx

Memory Tone CTCSS Uplink Downlink

1 88.5 Hz 145.880 MHz 435.890 MHz

2 88.5 Hz 145.880 MHz 435.885 MHz

3 88.5 Hz 145.880 MHz 435.880 MHz

4 88.5 Hz 145.880 MHz 435.875 MHz

5 88.5 Hz 145.880 MHz 435.870 MHz


Program your radio for the current FM satellites ISS – International space station

No CTCSS tone on tx


So why operate via amature satellites ?



• Try something new



• Try something new• Make a new friend



• Try something new• Make a new friend • Sharpen your operating skills



• Try something new• Make a new friend • Sharpen your operating skills• Challenge yourself



• Try something new• Make a new friend • Sharpen your operating skills• Challenge yourself • Challenge your equipment ( 5 watt or 1.5 watt )



• Try something new• Make a new friend • Sharpen your operating skills• Challenge yourself • Challenge your equipment ( 5 watt or 1.5 watt )• Chase satellite awards (amsat.org - >services ->awards)



• Try something new• Make a new friend • Sharpen your operating skills• Challenge yourself • Challenge your equipment ( 5 watt or 1.5 watt )• Chase satellite awards (amsat.org - >services →awards)• Talk with astronauts on board of the space station



• Try something new• Make a new friend • Sharpen your operating skills• Challenge yourself • Challenge your equipment ( 5 watt or 1.5 watt )• Chase satellite awards (amsat.org - >services →awards)• Talk with astronauts on board of the space station• Get your kids or grandkids involved.


Are you ready to try ?


I recommend that you start with so-50 or ao-92 first, because they are stronger , and easy to fallow .Also just fallow the satellite the first time, and get a feel for the speed, direction and Doppler correction.

Don’t try to make a contact .


Using amsatdroid free , I will first update the keps (Keplerian elements) from amsat.org .They are located in the settings menu under “update keps”

Keps provide a mathematical description of a Satellite's orbit . If not updated , will provideinaccurate pass prediction ( wrong starting time )


Amsatdroid free will provide next availablepass and plot a course from AOS to LOS

AOS stands for Acquisition of Signal.AOS is the time that a satellite rises above the horizon of an observer.

LOS stands for Loss of Signal.LOS is the time that a satellite passes below theobserver’s horizon.


Turn on the radio and turn off the squelch on memory 1 or AOS.


Turn on the radio and turn off the squelch on memory 1 or AOS.Turn the recorder on and say the name of the satellite you are about to work .


Turn on the radio and turn off the squelch on memory 1 or AOS.Turn the recorder on and say the name of the satellite you are about to work .Point the antenna at the AOS direction .


Turn on the radio and turn off the squelch on memory 1 or AOS.Turn the recorder on and say the name of the satellite you are about to work .Point the antenna at the AOS direction . Listen, listen, listen and listen .


Turn on the radio and turn off the squelch on memory 1 or AOS.Turn the recorder on and say the name of the satellite you are about to work .Point the antenna at the AOS direction . Listen, listen, listen and listen . Periodically adjust the memory (1 to 2 and 2 to 3 …) to compensate for Doppler shift


Turn on the radio and turn off the squelch on memory 1 or AOSTurn the recorder on and say the name of the satellite you are about to work .Point the antenna at the AOS direction . Listen, listen, listen and listen .Periodically adjust the memory (1 to 2 and 2 to 3 …) to compensate for Doppler shift Never call CQ on a satellite .


Turn on the radio and turn off the squelch on memory 1 or AOS.Turn the recorder on and say the name of the satellite you are about to work .Point the antenna at the AOS direction . Listen, listen, listen and listen .Periodically adjust the memory (1 to 2 and 2 to 3 …) to compensate for Doppler shift Never call CQ on a satellite .If you are ready to call , just give your call sign and grid locator

Example : November xray 9 golf (nx9g), echo november 61 (en61)


Turn on the radio and turn off the squelch on memory 1 or AOSTurn the recorder on and say the name of the satellite you are about to work .Point the antenna at the AOS direction . Listen, listen, listen and listen .Periodically adjust the memory (1 to 2 and 2 to 3 …) to compensate for Doppler shift Never call CQ on a satellite .If you are ready to call , just give your call sign and grid locator

Example : November xray 9 golf (nx9g), echo november 61 (en61)

When someone calls you back, just confirm their gird and call phonetically

Example: Kilo charlie 9 radio delta tango (kc9rdt), QSL echo november 52 (en52) 73


If you don’t hear anything :Check your radio Check your antenna and cables Check if the radio memory was set for the correct satelliteCheck amsat.org status page

https://www.amsat.org/status/



Congratulations ! You just completed your first QSO


URL resources:

https://www.amsat.org/status/https://www.qsl.net/ah6rh/am-radio/spacecomm/getting-started-iss.htmlhttp://www.dk1tb.de/downloadeng.htmhttp://www.dj0ip.de/ricki-leaks/hrd-software/https://www.dogparksoftware.com/MacDoppler.htmlhttp://gpredict.oz9aec.net/https://play.google.com/store/apps/details?id=uk.me.g4dpz.HamSatDroid&hl=en_UShttps://play.google.com/store/apps/details?id=ea4eoz.HamGPS&hl=en_UShttps://elkantennas.comhttp://www.arrowantennas.com/arrowii/146-437.htmlhttps://www.amazon.com/Sony-ICDPX370-Digital-Recorder-Built/dp/B06XFTWCBJhttps://w8jxn.com/files/Download/2m_df_antenna.pdfhttps://www.amsat.org/new-mail-services-page/


https://www.qsl.net/ah6rh/am-radio/spacecomm/getting-started-iss.html

http://www.dk1tb.de/downloadeng.htm

http://www.dj0ip.de/ricki-leaks/hrd-software/

https://www.dogparksoftware.com/MacDoppler.html

http://gpredict.oz9aec.net/

https://play.google.com/store/apps/details?id=uk.me.g4dpz.HamSatDroid&hl=en_US

https://play.google.com/store/apps/details?id=ea4eoz.HamGPS&hl=en_US

https://elkantennas.com/

http://www.arrowantennas.com/arrowii/146-437.html

https://www.amazon.com/Sony-ICDPX370-Digital-Recorder-Built/dp/B06XFTWCBJ

https://w8jxn.com/files/Download/2m_df_antenna.pdf

https://www.amsat.org/new-mail-services-page/

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