Amateur Radio on Balloons - Ilmari 2003
 

Support Our Cause

 
Ilmari-2003
SuperIlmari 2003

The Ilmari Project is not a Viestikallio Project, this just happened to be a place where we could host these web-pages...

Amateur Radio systems on different balloons


The Ilmari 2003 Balloon -project

First flight ETA: 2003 end of september / begining of october

 

2002-07-31: Kickoff (?)

Heikki Lahtivirta (OH2LH / OH2BSH) presented his "Super-Ilmari-2003" project thoughts at AMSAT-OH group meeting.

Discussions on the topic are intended to be done at the AMSAT-OH discussion list, see the link at the menu on left. (Sorry, most likely only in Finnish...)

OH2LH's "kickoff foils" (finnish, only!)


2002-08-29: Ilmari Reality Check 1

Ilmari Reality Check 1: 2002-Aug-29


Licensing issues:

Finnish Civial Aviation Authority, Flight Safety: normit

... of leftside menu "OPS", and then: "OPS M1-1" and reading (finnish only, sorry) secion 9: "Miehittämättömät vapaat ilmapallot".

Radio regulatory notes: (finnish only) lupajuttuja amsat-oh listan logista (English summary: "We will not give the permit without a license application.   Do apply, and very likely it will be granted.")


TRANSLATIONS PARTIAL/MISSING; Linked pages do contain english texts to a large extent..

2002-09-26: Ilmari Reality Check 2

IRC2: 2002-Syyskuu-26 (pöytäkirja)


2002-10-17: Säätösessio

Säätösessio Mikon, OH2AUE, säätämössä

LAB-1: 2002-10-17


M.Fletcher piirroksia:

Rakennekuva
Translattoriproton lohkokaavio:
Taajuushahmotelmia:


2002-10-28: Säätösessio

Säätösessio Mikon, OH2AUE, säätämössä

LAB-2: 2002-10-28


2002-10-31: Ilmari Reality Check 3

IRC3: 2002-Lokakuu-31 (Logia)


2002-11-25: Säätösessio

Säätösessio ennen IRC4:ää Mikon, OH2AUE, säätämössä

LAB-3: 2002-11-25


2002-11-28: Ilmari Reality Check 4

IRC4: 2002-Marraskuu-28


2003-01-18: Ilmari Reality Check 5

IRC5: 2003-Tammikuu-18

Tampereella


2003-02-05: Säätösessio

Säätösessio Mikon, OH2AUE, säätämössä

LAB-4: 2003-02-05


2003-02-19: Säätösessio

Säätösessio Mikon, OH2AUE, säätämössä

LAB-5: 2003-02-19


2003-03-12: Säätösessio

Säätösessio Mikon, OH2AUE, säätämössä

LAB-6: 2003-03-12

More...


Taajuushahmotelmia:

Same things at Michael Fletcher's pages: Ilmari-2003 RF payload data (English)

Bandplan: (2003-01-29)

Cable losses at HF: 0.0 dB, VHF/UHF: 0.3 - 0.5 dB.

At the translator LSB->USB, and f(up) + f(down) = 581.691 MHz

Thing Frequency Deviation / BW Transmit / receive Mode Polarization, antenna RF power (W) / Noise Figure (dB) Gain, dBd
APRS Tx 437.850 MHz ?? ±3.5 kHz F3E, 1200 baud AX.25 in NBFM + voice vertical, 1/4 Lambda GP 0.3 W 0
ATV Tx: 1282 MHz ±8 MHz F3F: FM-ATV; sub-carriers: 6.0 MHz, 6.5 MHz; Possibly on/off with rythm of 15/45 sec. horizontal, bigwheel 1.2 W -2
Translator input: 144.306 - 144.344 MHz 40 kHz BW J3E/A1A/... (LSB, CW) horizontal turnstile, RHCP ~3 dB -3
Command receiver: ±3.5 kHz undefined 2003-1-29 F2D, DTMF in NBFM in translator input rx, outside the pass band - -
Translator output: 437.347 - 437.385 MHz 40 kHz BW J3E/A1A/... (USB, CW) horizontal, turnstile, RHCP 1.0 W
PEP
-3
Translator 400 baud BPSK beacon: 437.725 MHz 1.6 kHz G1D: AO-40 style 400 bps BPSK, AO-40 frames and KA9Q-FEC frames alternating - - -
Translator CW/MFSK16 beacon: 436.912 MHz
(DDS programmable; can be changed)
1.0 kHz F1D/F1A: MFSK16 / CW (FSK 600Hz), alternating circa 30+30 sec - - -
80m beacon: 3.5795 MHz, DDS prog- rammable 1.0 kHz F1D/F1A: MFSK16 / CW (FSK 600Hz), alternating circa 30+30 sec vertical 1/2 Lambda (top-)end-fed Hertz 0.8 W 0

Matti Aarnio <matti.aarnio@zmailer.org>; OH2MQK

 

Valid HTML 4.01!   Z Elisa Communications
This page is Links enhanced for additional browsing pleasure.