APRS Satellite Live Telemetry Links
Captured on 145.825 MHz
Bob Bruninga, WB4APR, Instructor, US Naval Academy (bob at aprs dot org)
Steve Dimse, K4HG - Designer of FINDU.com
SatGate Statistics: KE6BLR sorted all of the ground station data by the number of packets heard during July. We hope to fill in the table to help understand the difreence between omni-no-track stations and full track stations.
Your Next Pass: KE6BLR has also written a pass predictor for the next APRS satellites for your location! This data shows that with the 6 active APRS satellites on orbit, generally half the time, you are no more than 30 minutes from the next pass, 75% of the time you are less than 60 minutes to the next pass and 93% of the time your next pass is within 90 minutes as shown at right.
NEW: Geostationary APRS in Europe:
OE3DMB, Andy has experimented successfully with APRS mobile
via the Eastern hemisphere Geostationary AMSAT QO-100.
He uses CHIRP modulation to achieve a good link from an omni
antenna on the roof of his car. Uplink is on 2.4 GHz
and downlink is on 10 GHz band. See his lengthy paper.
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BRICSAT2 (USNAP1)(NO-103) on 145.825 and [USNA14 on 437.605]:
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Launched in Sept 2015, into a 6 degree inclination 650 km orbit that only serves equitorial regions
but does so every 110 minutes near the equator and once a day up to latitudes of 30 deg.
The digipeater is a powerful 5W output.
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Launched in 2006, into a 35.4 degree inclination orbit, with an altitude of about 470 km.
Supports APRS digipeating but also hosts a Packet Bulletin Board System at 9600 baud
with a 145.840 uplink, and 435.103 downlink. Output power is 1 watt.
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PSAT3 (USNA) had APRS relay, DTMF Grid and Messaging, Voice synthesizer & SSTV in a PPOD box:
LAUNCH CANCELED! Launch provider
failed to meet launch deadline of first launch on 2 Mar
So second launch (us) is canceled and that ended the
DARPA launch challenge program.
So, PSAT3, is on display in our lab (with live telemetry and on the APRS channel) & for any future opportunities.
PSAT2 (NO-104) on 435.350 MHz SSTV and PSK31 downlink:
Launched 25 Jun 2019. 28 degree, 860/300 km orbit.
VHF AX.25 downlink failed in August.
Problem was my fault. Wiring a 4 volt XCVR module to 5v!
UHF is working fine. SSTV is automatic and PSK31 uplink is on 29.4815 MHz.
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Launched 25 June 2019 into 28 degree eliptical orbit, 860/300 km with PSAT2. Unable to turn on Digi.
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PSAT (NO-84) (USNA) on 145.825 MHz:
Launched 20 May 2015 into 55 degree circular orbit at 450 km?
PCSAT (NO-44) (USNA) on 145.825 MHz: Also known as W3ADO-1
Launched 30 Sept 2001 into 67 degree circular orbit at 800 mile altitude
ARISS on International Space Station on 145.825 MHz:
Amateur Radio on ISS switched to APRS freuqency during 2007 and operational ever since (mostly)
India's AISAT-1 on 145.825 MHz:
Lanched on April 1st 0357z attached to the upper stage of the PSLV C45 mission. It is in a polar orbit
with local passes everywhere 2 or 3 times in a row and then another 2 or 3 twelve hours later.
LAPAN-ORARI (IO-86) - APRS digipeater on 145.825 and FM Voice transponder on 435.880/down and 145.880 MHz up.
FalconSAT-3 - Special 9600 downlink on 435.103 MHz: