Students at the Ivy League Brown University are developing an amateur radio satellite EQUiSat that will carry a Xenon Flash Tube (XFT) subsystem to act as an Optical Beacon that should be visible to the unaided eye of observers on Earth.
See http://www.uk.amsat.org/?p=10635
73 Trevor M5AKA
AMSAK-UK http://www.amsat-uk.org/
----
Has anyone located a driver for the LVB Tracker internal USB to serial
port adapter on Windows 7 x64?
If not, has anyone reverted to the serial port connection on LVB Tracker
and used an external USB to serial port adapter successfully with
SatPC32 on Windows 7 x64?
I have an Edgeport multiple USB to serial port that has drivers for
Windows 7 x64 that I will use if I have to. I would prefer using the LVB
Tracker with its USB to serial adapter if someone has another solution.
73,
Bill
NJ1H
Hi All,
Here is a quick AO-16 update. On Sunday I turned AO-16 long enough to
get some telemetry packets. The satellite would remain on for less
than one minute after being commanded on. A quick test of the "bent
pipe" voice mode repeater was successful. . The "hardware watchdog
timer problem" is still evident; as expected, spacecraft temperatures
are insufficient to keep the transmitter ON (needs to be above 15 deg
C).
Orbit projections suggest that satellite illumination conditions will
not result in increased temperatures for nearly 10 years. Command
stations do periodically turn AO-16 "ON" to check on its condition and
see if the hardware timer problem has "automagically" fixed itself
(which in not anticipated, but who knows...).
AO-16 telemetry
3 Oct 2010 1838 utc
PACSAT MBL Telemetry Decoder Ver. 1.3 (c) Mike Rupprecht, DK3WN
===============================================================================
(average values)
+10V Battery Bus : 0.00 V
Battery Charge Reg : 0.55 mA
Base Temp : 9.07 °C
PSK RF Out : 1.90 W
+5V RX Bus : 4.87 V
+8.5V RX Bus : 8.49 V
+10V RX Bus : 11.24 V
Here is another teaser :) Several months ago I commanded the AO-16
S-band transmitter ON; it too remains functional (albeit weak), and
was received by me, Drew KO4MA, and Alan WA4SCA.
73,
--
Mark L. Hammond [N8MH]
Great job, Skyler, on the satellite net this evening.
Although just a dozen or so checked in, there were more
lurking - and, hopefully, learning and getting interested.
Heck - one of your participants even offered a donation to
your school's ham club!
Clint K6LCS
Hi Patrick, do we know if LOTW has been advised to add the new crop of sats?
73, Ted
K7TRK
-----Original Message-----
From: AMSAT-BB [mailto:[email protected]] On Behalf Of Patrick
STODDARD (WD9EWK/VA7EWK)
Sent: Monday, September 28, 2015 10:31 PM
To: amsat-bb(a)amsat.org
Subject: [amsat-bb] LilacSat-2 pass @ 0147 UTC tonight (29 September)
Hi!
There was a nice turnout on the 0147 UTC LilacSat-2 pass over the US west
coast. Stations up and down the coast, and as far east as west Texas, were
on. Unlike with the first QSO I made on this satellite last week, when it
was raining very hard on my operating position in the yard, I was able to
have a nice and calm evening.
I used my Icom IC-2820H 2m/70cm FM mobile radio for my uplink transmitter,
and an SDR setup for the downlink receiver - SDRplay SDR receiver, 8-inch
Windows 10 tablet with HDSDR software - to operate full-duplex. I connected
both of these through a diplexer to my Elk log periodic. I used HDSDR to
make an RF recording of both downlinks - the FM repeater downlink around
437.200 MHz, and the digital telemetry downlink around 437.225 MHz. I think
I had a better copy on the 437.225 MHz downlink tonight than over the
weekend, and logged 6 contacts on the FM repeater.
Last week, when I worked Glenn AA5PK, I was not able to get through with
anything less than 50W transmit power. Tonight was not as bad, but I found
that I couldn't get away with 5W for more than a few transmissions. The
mid-power setting from my IC-2820H, 15W, worked better. High power (50W)
worked well, too. None of these power levels desensed my SDRplay receiver.
Maybe if the satellite was higher in the sky, and closer to passing over my
head, I might have had better luck using the 5W power level. I saw a mixed
reaction on Twitter - one reported needing to run 50W, and someone else said
5W was sufficient.
Rather than posting the long and nasty URLs used by Dropbox for its public
folders, I made a shorter URL that can take you to the recordings and other
files I have been posting in my public Dropbox space:
http://dropbox.wd9ewk.net/
For tonight's LilacSat-2 pass, look for the folder with the name
"20150929-LilacSat2". If you have an SDR program on your computer or device,
and have the bandwidth to download the RF recording, download the WAV file
with the name starting with "HDSDR_20150929" in that folder. I also have an
MP3 recording with the audio I heard during the pass, plus photos of my back
yard setup and a screengrab from my phone's tracking app to show how the
pass was for me in central Arizona.
Late last week, I made a one-page graphic with a quick-reference guide for
the LilacSat-2 FM repeater. I now have this graphic at its own URL:
http://lilacsat2.wd9ewk.net/
Please feel free to right-click on the graphic and save it to your
computer/tablet/device.
This pass was the 3rd consecutive pass where LilacSat-2's FM repeater was
operational over the continental USA. It was nice to see the reports from
the two earlier passes, and then to work it for myself on the third pass.
Thanks to the LilacSat-2 team for another FM satellite for us!
73!
Patrick WD9EWK/VA7EWK
http://www.wd9ewk.net/
Twitter: @WD9EWK
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I notice at http://oscar.dcarr.org/ when trying to submit a report, the
new XW CAMSATs are not available on the Select Satellite drop down box.
They do, however, appear on the colorful graphic display. I wanted to
submit a report on hearing (and working) XW-2E and 2F between 1300Z and
1330Z on low passes for me.
Red
KC4LE
Heard very strong telemetry signals on 437.425 Mhz from LAPAN A2 during
06:58 UT 17.4 deg southern pass over India.
Mani [VU2WMY/KJ6LRS]
Secretary & Station-In-Charge
Upagrah Amateur Radio Club VU2URC
ISRO Satellite Centre
HAL Airport Road, Bangalore-560 017.
Phone:(Office)91-80-25082598/25082054/25082192
Mobile: 91-9880 341 456
E-mail ID: wmy(a)isac.gov.in
vu2wmy_mani(a)yahoo.com
isrohams(a)yahoo.com
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I just heard what I assume was Lilac 2's telemetry during its last
pass here starting from around TCA to LOS.
It was a digital signal on the FM transponder downlink frequency. It
consisted of a long tone followed a short one and was transmitted
about every 30 seconds. I had no problems in hearing it once I knew
where the bird was.
73s
Bernhard VA6BMJ @ DO33FL
