This page is idented to collect technical info regarding the communication package.

== General Decisions ==
Decision QRGs: TX 70cm, RX 70cm and 2 m (otherwise 3rd harmonic of 2m will degrade 70cm reception)

Preliminary frequency payload: 
beacon: 70cm, rxtx modem 70cm, control unit 2m rx and possible 10m rx


== Section HF ==
MiniCircuits LFCN-530 LowPass Filter, ceramics, DC to 530 Mhz (suitable to seperate bands)
[[http://www.minicircuits.com/pages/s-params/LFCN-530_VIEW.pdf|Datasheet]]
[[http://www.minicircuits.com/products/filters_sm_high_ltcc.html|Weblist with all filters]]

RF2117 High Efficieny Power Amplifier (70cm operation, controlable, up to 2 watts at 3V)
[[http://pdf1.alldatasheet.com/datasheet-pdf/view/35671/RFMD/RF2117.html|Datasheet]]

RF5110G (Replacement for RF2117) (wider operation, more watts at 3V )
[[http://www.rfmd.com/CS/Documents/5110GDS.pdf|Datasheet]]

M/A-COM SW-425 HF Switch (DC to 3 Ghz, 3 Watts)
[[http://www.digchip.com/datasheets/parts/datasheet/270/SW-425-pdf.php|Datasheet]]


== Section Modem and Simple Receiver ==
Motorola MC3362 Low-Power Narrowband FM Receiver (suitable for 2m reception)
[[http://www.discriminator.nl/ic/mc3362.pdf|Datasheet]]

Blockschematics for pic based afsk25 rxtx
[[http://www.ies.univ-montp2.fr/robusta/satellite/IMG/pdf/RP_CR_2009.10.09_fonct.pdf|Link to pdf]]


== Section Tranceiver ==
CC1020 Low-Power Single Chip RF Transceiver for Narrowband Systems (suitable for 12,5 and 25 kHz operation)
[[http://pdf1.alldatasheet.com/datasheet-pdf/view/143391/TI/CC1020.html|Datasheet]]

AXSEM AX5043 SingleChip Lowpower Tranceiver (the swiss rxtx knife, operates from 2m up to 23cm
[[http://www.compotek.de/37.html?&tx_ttnews%5Btt_news%5D=102&tx_ttnews%5BbackPid%5D=38&cHash=40f8f5da1980852040b150faa078f74c|Article about in german]]
[[http://www.axsem.com/www/index.php?option=com_content&view=article&id=65&Itemid=96|Link to Datasheet]]


== Similar Projects ==
Development of a Highly Integrated Communication System for use in Low Power Space Applications (Thesis Huerta, 2006)
[[http://www.google.at/url?sa=t&source=web&cd=1&ved=0CBgQFjAA&url=http%3A%2F%2Fpolysat.calpoly.edu%2FPublishedPapers%2FDerekHuerta_thesis.pdf&ei=_s7sTaH_NceaOpbflbIB&usg=AFQjCNF57mqv2hnrGzPkLf88MmoH-ZzL0w|Link to Document]]

Forum for CubeSat Techs
[[http://cubesat.ifastnet.com/forum/viewforum.php?f=5|Link to Forum-Transceiver-Antennas]]

Online Documentation of the Robusta Satellite, build by the University of Montpellier
[[http://www.ies.univ-montp2.fr/robusta/satellite/spip.php?rubrique85|Wealth of tech docs and prints]]

Techinfo of ballooning projects of ÖWF/Polares
[[http://homepage.univie.ac.at/Michael.Taraba/balloon/|Link to Documents, Thanks Michael]]

Requirements for ballooning practically
[[http://homepage.univie.ac.at/Michael.Taraba/balloon/docs/Ballon%2020.11.2010-3.zip|ÖWF Experiances]]

PIC Based PSK31 encoder
[[http://www.ringolake.com/pic_proj/PSK31/pic_psk31.html|Link to Projectpage]]

== Protocol ==
List of Satellite Starts so far (hall of fame)
[[http://www.amsat-dl.org/index.php/satelliten-mainmenu-76/ersicht-aller-mainmenu-102|Link to the list]]

A survey of CubeSat Communication Systems (Do's and Dont's, KF6ZEO and KI6GIV)
[[http://www.klofas.com/papers/CommSurvey-Bryan_Klofas.pdf|Link to Document]]

== Misc ==
Usb sized SDR RX from 60MHz to 2200 Mhz, costs about €160
[[http://www.funcubedongle.com/|Project page]]

Shop for CubeSat Components (mur.sat wont fit into the clumbsy dice ;) )
[[http://www.cubesatshop.com/|Link to Shop]]

List of high altitude operating gps modules
[[http://showcase.netins.net/web/wallio/GPSrcvrsvs60kft.htm|Link to List]]