but
it was absolutely impossible to receive my own echoes from the moon even
using my 1 kW K2RIW power amplifier.
Nice to remember but unfortunately a big storm destroyed my array at the
end of 1980 !
In a separate email I have sent a picture of it.
Best 73 de
i8CVS Domenico
stations in USA experimenting
with me the above propagation anomaly but if some of them are reading this
AMSAT-BB please drop a line in responce.
Best 73 de
i8CVS Domenico
- Original Message -
From: Bill Dzurilla billdz@yahoo.com
To: amsat-bb@amsat.org
Sent: Sunday, March 13, 2011 1:25
sensitivity without to overload
his receiver.
The model for 70 cm SP432VDG needed by Paul K6HR has a Noise Figure
of 0.55 dB and a gain of 16 dB as specified in the bottom line here:
http://www.advancedreceiver.com/page7.html
73 de
i8CVS Domenico
- Original Message -
From: Mark L. Hammond
Hi All,
I would like to know if after the terrific earthquake in Japan the tsunami
reached the west coast of USA.
I am worry about because my son is part of the crew on board the ship
SPIRIT sailing the coast of California and Mexico
Tank you for any information.
73 de
i8CVS Domenico
://www.db0anf.de/app/bbs/messages/show-AMSATBB4673
73 de
i8CVS Domenico
- Original Message -
From: Paul Delaney - K6HR paul.hamra...@verizon.net
To: amsat-bb@amsat.org
Sent: Wednesday, March 09, 2011 7:11 PM
Subject: [amsat-bb] IC-821H Frontend Overload?
I'm setting up for satellite
part
on your impedance reading !
Best 73 de
i8CVS Domenico
- Original Message -
From: Pete Rowe ptr...@yahoo.com
To: AMSAT BB amsat-bb@amsat.org; Howard Kowall hkow...@shaw.ca
Sent: Sunday, March 06, 2011 4:45 PM
Subject: [amsat-bb] Re: Antenna Analyzer
Hi Howard
I wouldn't be without my
it is not a respectable antenna
analyser.
Why to wast money to buy an antenna analyser to measure wrong values of
Z= R+/- jX if been happy with only the value of the VSWR you need only a
VSWR meter ?
73 de
i8CVS Domenico
- Original Message -
From: Art McBride kc6...@cox.net
To: 'i8cvs
it is not a respectable antenna
analyser.
Why to wast money to buy an antenna analyser to measure wrong values of
Z= R+/- jX if been happy with only the value of the VSWR you need only a
VSWR meter ?
73 de
i8CVS Domenico
- Original Message -
From: Art McBride kc6...@cox.net
To: 'i8cvs
- Original Message -
From: Art McBride kc6...@cox.net
To: 'i8cvs' domenico.i8...@tin.it; 'Pete Rowe' ptr...@yahoo.com;
'AMSAT BB' amsat-bb@amsat.org; 'Howard Kowall' hkow...@shaw.ca
Sent: Monday, March 07, 2011 2:38 AM
Subject: RE: [amsat-bb] Re: Antenna Analyzer
Domenico
Hi Kevin, KF7MYK
I suggest to look time to time at the OSCAR-10 beacon a steady carrier on
145.812 MHz +/- doppler
73 de
i8CVS Domenico
- Original Message -
From: Kevin Deane summit...@live.com
To: amsat-bb@amsat.org
Sent: Wednesday, March 02, 2011 9:38 PM
Subject: [amsat-bb] Broken
are both relatively low so that the transponder can be made non
inverting without considebable problems for the satellite user.
73 de
i8CVS Domenico
- Original Message -
From: Kevin Deane
To: domenico.i8...@tin.it
Sent: Monday, February 28, 2011 4:43 AM
Subject: RE
Hi Kevin,
The transponder of FO-29 is inverting and to receive correctly in USB on 70
cm you must transmit LSB in 2 meters.
73 de
i8CVS Domenico
- Original Message -
From: Kevin Deane summit...@live.com
To: amsat-bb@amsat.org
Sent: Monday, February 28, 2011 3:07 AM
Subject: [amsat-bb
the following article:
http://www.amsat.org/amsat-new/articles/Mode-J/
73 de
i8CVS Domenico
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-bb/index.html
Pulling for P3-E ! !
73 de
i8CVS Domenico
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was not an amateur satellite as
you can read here.
http://nssdc.gsfc.nasa.gov/nmc/masterCatalog.do?sc=1967-003H
By the way it is possible that the downlink frequency was very close
to the 2 meters band but I was not able to find any information about
the frequency.
73 de
i8CVS Domenico
.
No projects for HEO satellites in the future ? No brilliant prospects for
the Amateur Satellite Service if AMSAT-DL will be not able to find in
short time a launch opportunity for P3-E !
73 de
i8CVS Domenico
- Original Message -
From: John Geiger aa...@fidmail.com
To: i8cvs domenico.i8
to the 2 meters band but I was not able to find any information about
the frequency.
73 de
i8CVS Domenico
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dont we have at least one HEO in space to talk with you from all
continents ?
73 de
i8CVS Domenico
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with elevation
180° i.e. with the antenna completely flipped to 180°
The potentiometer VR4 is located in the rear of the control box as shown
in the instruction manual.
73 de
i8CVS Domenico
- Original Message -
From: w4upd upd...@bristor-assoc.com
To: amsat-bb@amsat.org
Sent: Tuesday
- Original Message -
From: Dave Webb KB1PVH
To: i8cvs
Sent: Tuesday, February 08, 2011 3:36 AM
Subject: Re: [amsat-bb] G5400 elevation issue
Domenico,
The highest voltage that I can get at full 180° flip is 2.78 volts with
voltage adjustment pot on rear of controller
completely flipped to 180°
The potentiometer VR4 is located in the rear of the control box as shown
in the instruction manual.
Have fun
73 de
i8CVS Domenico
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Not an AMSAT-NA member
a launch opportunity with ESA and
a ARIANE-5 launcher with P3-E inside the SPELDA adapter as soon as
possible.
Pulling for P3-E ! !
73 de
i8CVS Domenico
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Not an AMSAT-NA member
by AMSAT and command
station Stacey Mills W4SM only three stations where active i.e G3WDG,
N1JEZ and my self ,i8CVS
G3DWG was equipped to transmit on 2.4 GHz and to receive on 24 GHz
so that only he was able to get back his own signal from the transponder.
You where only able to receive on 24 GHz
(G3WDG),
Mike (N1JEZ), and Dom (I8CVS), and any others who participated in this
successful test.
The S1 Rx can certainly be listed as fully functional. We will await
further testing/info. on the S2 Rx.
W4SM for the AO-40 Command Team
73 de
that the best solution for your needs is to use a KR-500 with his
control box because it bear not too much in weight and has a 500 ohm
potentiometer into it that can be used in the future for the automatic
control of the elevation via your PC.
73 de
i8CVS Domenico
of doppler shift?
Thanks,
Norm n3ykf
Hi Norm, N3YKF
The VO-52 uplink is 435 MHz LSB and the downlink in 145 MHz USB (inverting
transponder ) so that the total doppler shift is the difference of both
dopplers.
73 de
i8CVS Domenico
___
Sent via
.HI !
I hope that ARI should be able to deactivate the D-Star repeater on
145.850 as well !
73 de
i8CVS Domenico
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to do it.
Gordon MM0YEQ
Hi Gordon , MM0YEQ
To work AO-7 mode-B as I actually do you need only any old
CW/SSB 70 cm TX and any old 2 meters CW/SSB RX wich cost
is not as much as a new car wheel.
73 de
i8CVS Domenico
___
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the above problem the only way is to use satellites with linear
transponder like VO-52. OSCAR-7 and FO-29 with several QSO on CW
and SSB at the same time without QRM in the same passband.
73 de
i8CVS Domenico
___
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to LHCP been LHCP the strongest signal.
73 de
i8CVS Domenico
- Original Message -
From: Louis House, KD5GM kd...@sbcglobal.net
To: amsat-bb@amsat.org
Sent: Saturday, January 08, 2011 3:23 PM
Subject: [amsat-bb] KLM-2M-C22 Polarity
I am using the KLM-2m-c22 (also the 432 model) with the CS-3
Hi All,
The only one satellite station from Morocco CN8LL is active
with good signals from IM64RG the city of Kenitra.
I got an excellent QSO with Adil during VO-52 orbit 30677
at 08:20 UTC to day Jan 6 ,2011
Stay tuned !
73 de
i8CVS Domenico
to do someting to solve the unlegal repeaters problems in
this country.
73 de
i8CVS Domenico
- Original Message -
From: Alain De Carolis al...@alain.it
To: f6...@aol.com
Cc: amsat-bb@amsat.org
Sent: Thursday, January 06, 2011 11:36 PM
Subject: [amsat-bb] Re: IR3UEF D-Star repeater 145.800
the hood to repait the spring:
73 de
i8CVS Domenico
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all orbits it
was operational.
I abandoned HO-68 for the better and reliable as well in all orbits
available transponder of VO-52
73 de
i8CVS Domenico
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Not an AMSAT-NA member
of Europe and this is why I abandoned HO-68
in favour most of the time of the most reliable VO-52.
73 de
i8CVS Domenico
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by law it follow a terrific chaos into the
amateur frequency bands in Italy.
WHAT A SHAME !
See belowe !
http://www.ondatelematica.it/joomla/index.php/ponti-ripetitori-/69-ripetitor
e-ir0ck-r10-145850-600-sub-67
73 de
i8CVS Domenico
- Original Message -
From: Ben Jackson b...@innismir.net
To: i8cvs domenico.i8...@tin.it
Cc: Andrew Glasbrenner glasbren...@mindspring.com; AMSAT BB
amsat-bb@amsat.org
Sent: Thursday, December 23, 2010 7:40 PM
Subject: Re: [amsat-bb] Re: Another Winner!
On 12/23/2010 1:09 PM, i8cvs
Hi Drew, KO4MA
Are these donations to help AMSAT for P3D ? or for what ?
73 de
i8CVS Domenico
- Original Message -
From: Andrew Glasbrenner glasbren...@mindspring.com
To: Martha mar...@amsat.org
Cc: AMSAT BB amsat-bb@amsat.org
Sent: Wednesday, December 22, 2010 7:35 PM
Subject: [amsat
) RHCP
L: Linear
S: Linear
73 de
i8CVS Domenico
- Original Message -
From: jmfranke jmfra...@cox.net
To: amsat-bb@amsat.org
Sent: Tuesday, December 21, 2010 8:56 PM
Subject: [amsat-bb] AO-51 S-Band antenna polarization
Does anyone know the polarization of the 2.4 GHz transmissions from AO
Hi Drew, KO4MA
In my opinion would be much better to donate 690 dollars to AMSAT-DL
for P3E ! !
73 de
i8CVS Domenico
- Original Message -
From: Andrew Glasbrenner glasbren...@mindspring.com
To: sa...@amsat.org; Amsat-BB amsat-bb@amsat.org
Sent: Wednesday, November 17, 2010 4:23 PM
Hi Enzo, IK8OZV
Actually in Italy the difference between our local time and the UTC time
is just 1 hour.
73 de
i8CVS Domenico
- Original Message -
From: Vincenzo Mone vim...@alice.it
To: Amsat - BBs amsat-bb@amsat.org
Sent: Tuesday, November 16, 2010 8:45 PM
Subject: [amsat-bb] Wisp
??
Right ! midway 90 degrees is straight up with the antenna radiating at the
zenith.
73 de
i8CVS Domenico
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!
73 de David VK5DG (who is looking forward to getting back on the air).
73 de
i8CVS Domenico
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Hi Henk PA3GUO
In a separate email I have sent to you what in my opinion is the best and
easy to understand article about the use of circular polarization written
by K4KJ The advantages of circular polarization
If anybody is interested on it please let me know.
73 de
i8CVS Domenico
Hi Tom, K0TW
In a separate email I have sent to you what in my opinion is the best and
easy to understand article about the use of circular polarization written
by K4KJ The advantages of circular polarization
If anybody is interested on it please let me know.
73 de
i8CVS Domenico
.
Best 73 de
i8CVS Domenico
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dB using the wrong or reversed circular polarization.
73 de
i8CVS Domenico.
- Original Message -
From: Tom k...@cox.net
To: amsat-bb@amsat.org
Sent: Thursday, October 07, 2010 12:42 AM
Subject: [amsat-bb] Re: LHCP or RHCP?
Perhaps I should have worded my question differently. I
with the
above people.
73 de
i8CVS Domenico
EX AMSAT-UK member 0229
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Hi Bob, W7LRD
I am very happy that your problem has been almost solved !
73 de
i8CVS Domenico
- Original Message -
From: Bob- W7LRD
To: i8cvs
Sent: Friday, September 24, 2010 8:31 AM
Subject: Re: [amsat-bb] Fw: KR500 bearings
Hello Domenico
Almost done. I am having
Hi Bob W7LRD
My previous message to you via w7...@comcast.net was rejected to me !
73 de
i8CVS Domenico
- Original Message -
From: i8cvs
To: Bob- W7LRD
Sent: Thursday, September 23, 2010 4:36 PM
Subject: Re: [amsat-bb] KR500 bearings
- Original Message -
From: Bob
, horizontal; supposed to be 23dBi gain.
Manufacturer, of course, is unknown. No markings, but it does not look
home-built. By the mounting hardware, it looks like it was part of some
sort of stacked array.
Thanks,
Greg KO6TH
Hi Greg, KO6TH
It is probably a Tonna 35 element yagi.
73 de
i8CVS
.
Tonna make two models one for DX and SAT and the other one for ATV
By the way the gain is 20 dB isotropic.
20635 35 ELEMENTI 1260/1300 MHz dx,sat 20 dB 3,07 meters long
20636 35 ELEMENTI 1250/1260 MHz ATV 20 dB 3,07 meters long
73 de
i8CVS Domenico
well for
me from many years now.
73 de
i8CVS Domenico
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FM satellites specifically designed for a
single channel in FM.
73 de
i8CVS Domenico
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.pdf
Best 73 de
i8CVS Domenico
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Hi All,
I am very concerned to inform that the emritus President od the italian
Republic Senator Francesco Cossiga radio amateur i0FCG died to day
in Rome at 83
For more information on his life and radio activity look at QRZ.com
73 de
i8CVS Domenico
or tree more same size balls in order to replace
the original room occuped by the teeth and this rotator is actually running
without problems from several years now.
I hope this helps
73 de
i8CVS Domenico
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the
same dish for P3E
73 de
i8CVS Domenico
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when P3E will be launched.
We can only hope...and pray.for a launch probably between years 2012 or
2014 !
73 de
i8CVS Domenico
- Original Message -
From: Ron Overdrive
To: i8cvs
Cc: AMSAT-BB
Sent: Wednesday, August 11, 2010 9:15 PM
Subject: Re: [amsat-bb] Sat Dishes
of the controller to supply the 500 ohm
potentiometers must be connected as originally designed for the G5500
If you need the schematic diagram for a G5500 and KR-400 and a KR-500
please let me know.
I hope this helps.
73 de
i8CVS Domenico
___
Sent via
=4C58AD80EF3E17F;
73 de
i8CVS Domenico
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yagi having the elements spaced 1/4 wavelenght over the
boom and dimension of the feeding and delay lines can be scaled for 144 MHz
or any other band.
If someone is interested on it I can send a zipped pdf file of both the
above articles.
73 de
i8CVS Domenico
- Original Message -
From
rotation 180°
toward CW and 180° toward CCW
It is best to perform the above measurements with the rotator on the banch
and not on the roof with the antennas.
I hope this helps
73 de
i8CVS Domenico
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- Original Message -
From: Mark L. Hammond marklhamm...@gmail.com
To: bruni...@usna.edu
Cc: i8cvs domenico.i8...@tin.it; AMSAT-BB amsat-bb@amsat.org
Sent: Wednesday, June 30, 2010 4:51 PM
Subject: Re: [amsat-bb] Re: HF Satellite Relay
What about the narrow band digital EME modes?
Mark
to com in on.
For the above reason I have sent to you a zipped file of a very interesting
article on this matter titled Aircraft Scatter written by Kent Britain,
WA5VJB.
If someone is isterested on it drop me a request off line.
Best 73 de
i8CVS Domenico
- Original Message -
From: Tony d...@optonline.net
To: AMSAT-BB amsat-bb@amsat.org; i8cvs domenico.i8...@tin.it
Sent: Wednesday, June 30, 2010 10:31 AM
Subject: Re: [amsat-bb] Re: HF Satellite Relay
Dominico,
The 10M sphere brought another question to mind -- Mike Wantanabe,
JH1KRC
page:
http://msl.jpl.nasa.gov/QuickLooks/echoQL.html
73 de
i8CVS Domenico
- Original Message -
From: Greg D. ko6th_g...@hotmail.com
To: bruni...@usna.edu; amsat-bb@amsat.org
Sent: Tuesday, June 29, 2010 7:03 AM
Subject: [amsat-bb] Re: HF Satellite Relay
Well, it's finally happened
it is not detectable.
Best 73 de
i8CVS Domenico
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failed one
flyght.
Our linear transponder was recovered every time under CNR and CNES
command near Huelva south Spain and actually is still working as a linear
transponder on top of a mount in north of Italy.
Best 73 de
i8CVS Domenico
___
Sent via
/hg2409pc.pdf
Tanks
73 de
i8CVS Domenico
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to do?
Clint, K6LCS
Hi Clint, K6LCS
It was only a crazy idea. Why to infect with the FM a good satellite with a
linear transponder designed for CW and SSB when there are a lot of FM
satellite specifically designed for FM !
73 de
i8CVS Domenico
All orbits overhead for Europe HO-68 is not scheduled and
the transponder is Turned-Off
Wery tired to make calculations every week for very small !
73 de
i8CVS Domenico
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Hi Yanco, KC9RDT
My message to you bounced back to me for three times. Please give me another
email address.
73 de
i8CVS Domenico
- Original Message -
From: Yanko Yankov samy...@shell4you.net
To: i8cvs domenico.i8...@tin.it
Sent: Friday, June 11, 2010 5:51 AM
Subject: RE: [amsat-bb] Re
for
2400 MHz made with the same set-up when the patch is azimutally rotated
by +/- 90° and is illuminated by the steady horizontally polarized dipole.
If someone is interested to see the above set-up for microwave please let me
know off line.
73 de
i8CVS Domenico
- Original Message -
From
with the internet address in order
to find the technical data of the above WiFi panels.
The HG2414P is a linearly polarized patch.
http://www.34t.com/PDF/hg2414p.pdf
The HG2409PC is a circular polarized patch (LH or RH available).
http://www.34t.com/PDF/hg2409pc.pdf
73 de
i8CVS Domenico
just a single panel and see how it performs for a while.
Good luck!
73, John W9EN
DM13le
w...@amsat.org
Hi John, W9EN
I would like to know if these panels are patch style antennas linearly or
circularly polarized.
Tanks
73 de
i8CVS Domenico
just a single panel and see how it performs for a while.
Good luck!
73, John W9EN
DM13le
w...@amsat.org
Hi John, W9EN
I would like to know if these panels are patch style antennas linearly or
circularly polarized.
Tanks
73 de
i8CVS Domenico
,
Greg KO6TH
73 de
i8CVS Domenico
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lead disks.
The picture of the above 15 turns helix antenna is visible at i8CVS in
QRZ.com
I have built two Helix Antennas the first one is a 10 turns with 0.67
wavelenght round reflector used beginning from OSCAR-7 to actually
FO-29 and HO-68 and it works very well.
The second one is a 15 turns
with few lead disks.
The picture of the above 15 turns helix antenna is visible at i8CVS in
QRZ.com
I have built two Helix Antennas the first one is a 10 turns with 0.67
wavelenght round reflector used beginning from OSCAR-7 to actually
FO-29 and HO-68 and it works very well.
The second one is a 15
- Original Message -
From: Patrick STODDARD amsat...@wd9ewk.net
To: amsat-bb@amsat.org
Sent: Sunday, June 06, 2010 12:35 AM
Subject: [amsat-bb] WD9EWK @ DM44xj/DM54aj now
Hi!
I found a spot on the DM44/DM54 line for the passes starting with the
AO7 pass at 2256 UTC through at least
large can be mounted very close to the ground
surface without affecting gain, front to back ratio and without to take
too much noise at 290 kelvin from the ground.
73 de
i8CVS Domenico
- Original Message -
From: John Belstner jbelst...@yahoo.com
To: Clare Fowler clarefow...@rogers.com
Cc
if the control box is OK then
pushing the elevation buttoms UP and DOWN the azimuth rotator must
run Left and Right.
In a separate message I have sent to you the schematic diagram for the
G-5500 rotator.
73 de
i8CVS Domenico
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for the Downlink Linear 10451.000 MHz ~2 MHz because
many of us are already equipped with X band downconverters and dishes
covering from 10450.000 to 10452.000 MHz originally made for AO40
never tested on it and now becaming rusty on the roof as you can see at
i8CVS in QRZ.com
From your block diagrams
along with HO-68
and OSCAR-7 is the best available satellite for linear CW and SSB
operation.
On FO-29 SSB I worked N2UN in New York from my JN70ES and
it was a real thrill to contact Tony with his portable station on a
promenade next to the East River.
73 de
i8CVS Domenico
Hi John, W6ZKH
Usually Alan Kung was sending the new weekly sked for HO-68 on saturday.
73 de
i8CVS Domenico
- Original Message -
From: John Neeley w6...@att.net
To: amsat-bb amsat-bb@amsat.org
Sent: Sunday, May 23, 2010 5:41 PM
Subject: [amsat-bb] New HO-68 sked
Anyone know when
and OSCAR-7 is the best available satellite for linear CW and SSB
operation.
On FO-29 SSB I worked N2UN in New York from my JN70ES and
it was a real thrill to contact Tony with his portable station on a
promenade next to the East River.
73 de
i8CVS Domenico
for
South of Europe because of very low satellite elevation.
By the way during the best orbits over Europe with high elevation HO-68
is always turned Off
Can you change a little the above situation particularly when HO-68 is in
CW/SSB linear mode ?
Tanks and 73 de
i8CVS Domenico
satellites becomes rusty under the roof and this is a reality
as you can see at i8CVS in QRZ.com
When OSCAR-10 was alive and well I abandoned the HF switching
to a promising satellite activity and I losted all my HF friends all around
the world.
When AO40 died I losted again all my satellite
-photographer Thierry Legault
that make a similar observation of the ISS and Atlantis against the sun
on 29 september 2006 as you can see here:
http://www.dailymail.co.uk/news/article-407636/A-spot-sun.html
enjoy !
73 de
i8CVS Domenico
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in the sky
and this is why you aim north the antennas to hit the Moon even if her SSP
on the map has a southbound path.
73 de
i8CVS Domenico
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is always a little bit behind the ISS position in
the sky and so a very accurate clock to track a LEO satellite is meaning
less particularly using high gain antennas with a narrow main lobe.
73 de
i8CVS Domenico
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to compensate
the polarization change due to Faraday rotation.
A bigger dish complicates your life for very small because the satellite
traking
becomes more and more critical.
73 de
i8CVS Domenico
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,
Tony AA2TX
Hi Tony, AA2TX
I downloaded EZTime Sync and it works very well for me in Windows-98
Tanks and 73 de
i8CVS Domenico
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MW
Tanks to Daniel LU2DDU and Victor KP4PQ for the above information.
Best 73 de
i8CVS Domenico
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- Original Message -
From: Bob Cutter k...@yahoo.com
To: amsat-bb amsat-bb@amsat.org
Sent: Wednesday, May 05, 2010 7:52 PM
Subject: [amsat-bb] FO-29?
Is it operational?
73, Bob KIØG
Hi Bob, KI0G
FO-29 is alive and well !
73 de
i8CVS Domenico
of the actual VO-52
VO-52 continually operating with its linear transponders during all
available orbits is a reliable satellite for the amateur radio satellite
communications and as well for educational purposes.
Congratulations to Amsat India and to ISRO
73 de
i8CVS Domenico
Tennant - K8JWT
Hi Jacob, K8JWT
The next time you mount your antenna base use a plumb bob to hang
perpendicularly !
73 de
i8CVS Domenico
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- Original Message -
From: John Meeks
To: i8cvs
Cc: AMSAT-BB
Sent: Sunday, May 02, 2010 11:17 PM
Subject: Re: [amsat-bb] G-5500 Troubleshooting
i8cvs wrote:
- Original Message -
From: John Meeks jm...@gaslightmedia.com
To: amsat-bb@amsat.org
Sent: Saturday
- Original Message -
From: John Meeks
To: i8cvs
Cc: AMSAT-BB
Sent: Monday, May 03, 2010 2:55 AM
Subject: Re: [amsat-bb] G-5500 Troubleshooting
Ok Here's the reason for the apparent open winding in the AZ rotator motor.
http://picasaweb.google.com/vanagon
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