fail before the explosion?)
NO !
Was there a backup bird built of the same design that just might be
flyable if we could find a ride?
We got for years OSCAR-10 and OSCAR-13 in the Molnyia orbit
very similar to that of AO40 but with lover apogee and different
orbit inclination,
73 de i8CVS
Hi Bob, W7LRD
Use InstantTrack that is a easy way to keep all birds organized and have
all birds organized as you like.
73 de
i8CVS Domenico
- Original Message -
From: Bob- W7LRD w7...@comcast.net
To: amsat-bb@amsat.org
Sent: Sunday, June 08, 2014 9:15 PM
Subject: [amsat-bb] satellite
Hi Farrell,
The best solution is to get a good GaAsFET 432 MHz preamplifier and retune
them for the lowest Noise Figure to 439 MHz using a PANFI ( Precision
Automatic Noise Figure Indicator ) like a widely know AILTECH mod 75
73 de
i8CVS Domenico
- Original Message -
From: Farrell
the american callbook and sent to both
a letter.
Have fun
Best 73 de i8CVS Domenico
- Original Message -
From: Alan wa4...@gmail.com
To: 'Jim White' j...@coloradosatellite.com; 'AMSAT-BB'
amsat-bb@amsat.org
Sent: Thursday, June 05, 2014 5:58 PM
Subject: Re: [amsat-bb] (no subject)
Jim
by 0° to 180°
Have fun
73 de
i8CVS Domenico
- Original Message -
From: Bob- W7LRD w7...@comcast.net
To: amsat-bb@amsat.org
Sent: Friday, May 02, 2014 10:22 PM
Subject: [amsat-bb] G-5500
My G-5500 El. rotor will elevate but no/erratic indication on the control
unit. First guess pot
those
uplink signals that do not reduced immediately their EIRP
73 de
i8CVS Domenico
- Original Message -
From: Bryce Salmi bstguitar...@gmail.com
To: apbid...@mailaps.org
Cc: Peter Wilson prot...@virginmedia.com; amsat-bb@amsat.org
Sent: Friday, April 25, 2014 10:37 PM
Subject: [amsat-bb
Hi John, W0JAB
On AO40 you should remember at least the spin fading
due to the tumbling of AO40 i.e. the spin modulation..
.. WOW..WOW.WOW..
because of rotation of the satellite over the Z axis ! !
73 de
i8CVS Domenico
- Original Message -
From
Hi John, W0JAB
On AO40 you should remember mostly the fading due of
spin modulation.. WOW..WOW.WOW..
because of rotation of the satellite over the Z axis ! !
73 de
i8CVS Domenico
- Original Message -
From: John Becker w0...@big-river.net
To: amsat-bb
as shows the very low specific
resistivity of aluminum as listed on the following address:
http://metals.about.com/od/properties/a/Electrical-Conductivity-In-Metals.htm
73 de
i8CVS Domenico
- Original Message -
From: Simon Brown si...@sdr-radio.com
To: 'Amsat - BBs' amsat-bb@amsat.org
Sent
information about XW-1 (CAS-1):
http://
[04302012
73 de
i8CVS Domenico
- Original Message -
From: Francesco Grappi f.gra...@tin.it
To: 'Amsat - BBs' amsat-bb@amsat.org
Sent: Sunday, April 13, 2014 9:41 PM
Subject: [amsat-bb] Info Satellite XW-1 (HO-68)
XW-1 satellite (HO-68)
Any
of those measuring elements one is for maximum 1 watt, the
other for maximum 25 watt and the last one is for maximum 500 watt.
The only problem is that they must be expecially manufactured upon customer
order and so they are very costly ! !
Best 73 de i8CVS Domenico
Hi Norm, N3YKF
The two pieces of coax that connect the antennas to the power
divider/combiner to fed the antennas in phase can be any lenght
provided that both lenghts are equal and of the same type of
coax cable preferably cutted from the same roll of coax cable.
73 de
i8CVS Domenico
a 10 turns RHCP helix antenna for 70 cm
conentrically into a 5 or 6 turns RHCP helix antenna for 2 meters
in my opinion it should work as well but the weight of this
antenna will be very very hight and not practical to be used in
comparison with yagi antennas.
73 de
i8CVS Domenico
- Original
DE i8CVS DOMENICO
The reason I am asking is that I want to mount arrow antennas with the same
element sets at right angles and offset a quarter wavelength, with the
correct phasing harness and the WRAPS AZ/EL to create a portable auto
tracking satellite setup that can be disassembled and easily
the above matter with many
drawings and pictures.
Have fun.
73 de i8CVS Domenico
On 03/12/2014 04:49 PM, i8cvs wrote:
Hi Gus, 8P6SM
Mounting 3 turn helix antenna for 2400 MHz concentrically
inside a 3 turns helix antenna for 1268 MHz was used as a
feed both wounded LHCP to illuminate
and
there are a lot of TLM files for many years that you can get and use for
your experiments.
Have fun
73 de i8CVS Domenico
- Original Message -
From: Paul Willmott pwillm...@northrock.bm
To: amsat-bb@amsat.org
Sent: Sunday, March 09, 2014 6:41 PM
Subject: [amsat-bb] AO-40 Telemetry
Hi All ,
This roket seems to be suitable for P3E !
http://www.alcantaracyclonespace.com/en/about/launch-vehicle
Hallo Alle
Dies könnte auch eine geeignete Rakete für unseren P3E sein:
http://www.alcantaracyclonespace.com/en/about/launch-vehicle
Damit wäre die Finanzierungsfrage natürlich
Hi Rick, WA4BUE
Working AO73 you missed a good satellite in the class of VO52
or FO29
73 de i8CVS Domenico
- Original Message -
From: Rich/wa4bue richard.s...@verizon.net
To: amsat-bb@amsat.org
Sent: Wednesday, January 29, 2014 5:18 AM
Subject: [amsat-bb] A0 73 Orbits 1013 1014
Hi John, W0JAB
At the moment there is no hope to see again a satellite like AO40
If we are like in the future probably we will see P3E, a satellite
similar to OSCAR-13 built by AMSAT-DL
73 de
i8CVS Domenico
- Original Message -
From: John Becker w0...@big-river.net
To: amsat-bb
:1 SWR on AO-07 ?
NO damaging to your rig will occur with a 2:1 SWR because the
reflected power from the antenna to your rig will be only the 10%
of the incident power.
2) Will future satellites be in the 435 to 438Mhz range?
YES
Thanks
Peter
G8KEK
73 de i8CVS Domenico
) with the
2:1 SWR on AO-07 ?
NO damaging to your rig will occur with a 2:1 SWR because the
reflected power from the antenna to your rig will be only the 10%
of the incident power.
2) Will future satellites be in the 435 to 438Mhz range?
YES
Thanks
Peter
G8KEK
73 de i8CVS Domenico
Hi Rich, WA4BUE
I wish only one HEO satellite similar to OSCAR-10, OSCAR-13
and AO40 to communicate worldwide ! !
73 de
i8CVS Domenico
- Original Message -
From: Rich/wa4bue richard.s...@verizon.net
To: Bob- W7LRD w7...@comcast.net; amsat-bb@amsat.org
Sent: Saturday, November 23, 2013
My heart bleeds at seeing many satellite old timers suffer so remembering !
73 de i8CVS Domenico
Member of the ZRO TEST Z9 CLUB Nr 18
ZRO Memorial Station Engineering Award Z8 Mode B
and Z8 Mode L endorsements
___
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interested
only in HEO or LEO satellites to be used for communications on
CW,SSB as AMSAT promised to all of us many years ago !
AMSAT says and writes: PHASE-3 the satellite for all ! You will
communicate better than using HF worldwide...remember ?
73 de i8CVS Domenico
Hi Clint, K6LCS
How many hands you have ? !
73 de
i8CVS Domenico
- Original Message -
From: Clint Bradford clintbra...@earthlink.net
To: amsat-bb@amsat.org; amsat-bb@amsat.org
Sent: Tuesday, November 19, 2013 9:13 PM
Subject: [amsat-bb] Re: Are you ready for the new satellites
Hello Brian, OZ1SKY
http://www.dl3lar.de/KRx00.html
is for KR-400 the azimuth rotator while Richard is looking
for instruction to dismount KR-500 the elevation rotator.
73 de i8CVS Domenico
- Original Message -
From: Brian Hougesen houge...@gmail.com
To: amsat-bb@amsat.org
Sent
daily the same spam
messages from DXMAPS
Thanks for any suggestion
73 de i8CVS Domenico
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de
i8CVS Domenico
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Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
.
73 de
i8CVS Domenico
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Hi Glenn, AA5PK and All on the List
Just to remind that the effect flyby was discovered more than
20 year ago by Prof. Giuseppe Colombo (SK) astrophisic at
the University of Padova in Italy and NASA consulting scientist.
Look please for him on Google
73 de
i8CVS Domenico
- Original
calculations match with the actual one ?!
I hope this helps and if there is any question please let me know.
73 de i8CVS Domenico
- Original Message -
From: Ralph Wallio, W0RPK
To: domenico.i8...@tin.it
Sent: Friday, October 04, 2013 4:48 PM
Subject: AMSAT-BB NF formula posting
i8CVS Domenico
- Original Message -
From: Les Rayburn l...@highnoonfilm.com
To: i8cvs domenico.i8...@tin.it
Sent: Friday, October 04, 2013 5:57 AM
Subject: Re: [amsat-bb] Crushcraft A144-10T VHF Twist Antenna
Domenico,
Thank you for your wise advice. Unfortunately a new cross-polarized
Magazine early
about 1973 and I have to find it in my many papers after that I will send a
copy to you but I remember it very often ant this numbars are burned into my
brain HI HI !
I hope this helps and if you have any question please let me know.
73 de i8CVS Domenico
- Original Message
with a XTAL of
28 - 10.7 = 17.3 MHz...VERY EASY !
have fun
73 de i8CVS Domenico
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can made the
measurement and send back the stuff back to him giving publicity
of the results to you and the others via AMSAT-BB
73 de
i8CVS Domenico
- Original Message -
From: Paul Stoetzer n...@arrl.net
To: amsat-bb@amsat.org
Sent: Thursday, October 03, 2013 12:40 PM
Subject: [amsat-bb
that described in my article publisched
recently into the AMSAT Journal March/April 2013
I hope this helps.
73 de i8CVS Domenico
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Not an AMSAT-NA member? Join now to support
A144-10T
VHF Twist antenna. It includes the cabling to allow the user to select
left or right hand polarization. My questions are numerous:
1.) How is the performance on this antenna, compared to more modern
designs?
Hi Les,N1LF from Domenico, i8CVS
1) I have used the A144-10T since 1973
of the Helix over a lengt of 1/4 turn and adjust the distance of the
strips from the reflector plate until the VSWR becomes close to 1
as possible and this is the system I use for the feed of my 2400
MHz 1.2 meters dish (see photo).
73 de i8CVS Domenico
numbar of turns
... or I am wrong ?
Why the 3 axis stabilization wheel/EPU whre never used on
AO40 ?
Thanks for your answere.
73 de
i8CVS Domenico
- Original Message -
From: Peter Guelzow peter.guel...@kourou.de
To: amsat-bb@amsat.org
Sent: Sunday, September 22, 2013 11:21 PM
the gain of the 2 meters ground station antennas.
We will talk about on the phone as soon you will be in Naples in the
next few days from 28 September to 1 October
73 de i8CVS Domenico
___
Sent via AMSAT-BB@amsat.org. Opinions expressed are those
after many attemps to overcome the problem the
satellite got an explosion inside wich damaged most part of transponders.
BTW AO40 worked fantastic in Mode U/S ,Mode L/S and Mode L/K for
a long time until the main battery and the spare battery system suddently
failed in short circuit.
73 de i8CVS
Hi Wayne, W9AE
I suggest you to realistically donate your $1000 to AMSAT-DL for
contribution to a fund raising campaign for the launch of P3E
73 de
i8CVS Domenico
- Original Message -
From: Wayne Estes w...@charter.net
To: amsat-bb@amsat.org
Sent: Saturday, September 21, 2013 8:30 PM
in 1972 I joined AMSAT because they
promised us to communicate worlwide much better than using
the HF but things changed and our antennas are becaming
rusty over the roof for very small or for nothingSorry !
73 de i8CVS Domenico
___
Sent via AMSAT-BB
and endangered species or the AMSAT members are less than 30,000 ?
73 de i8CVS Domenico
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- Original Message -
From: Martha
To: i8cvs
Cc: Alan Biddle ; AMSAT-BB ; SAREX-BB
Sent: Monday, September 16, 2013 10:52 PM
Subject: Re: [amsat-bb] Re: 2013 AMSAT Board of Directors Election Results
Announced
Domenico - AMSAT membership is approximately 3,000.
-- 73
should take care
of frequency coordination for IARU Region 1-2 and 3
Someone should complain with him.
73 de i8CVS Domenico
IARU Freq. Coordinator
Full Name: IARU Freq. Coordinator
Job Title: ZS6AKV
Company: Hans Van de Groenendaal
P.O. Box 90438
Garsfonstein 0042
South Africa
Home: 27-12-991-4662
that.
John, W0JAB
Hi John, W0JAB
I agree completely with you
73 de i8CVS Domenico
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there is no
chance and no way to get a new HEO satellite in the time to
come for many years almost for me. 81 years old !
Amen !
73 de
i8CVS Domenico
- Original Message -
From: Peter Klein pkl...@threshinc.com
To: amsat-bb@amsat.org
Sent: Thursday, August 29, 2013 8:58 AM
Subject: [amsat
UHF/Microwave Experimenter's Manual,ARRL
1990 pages. 9-5
6) R. Bertelsmeier, DJ9BV, Yagi Antennas for 144 MHz DUBUS
1/1990 pag. 23
Have fun
73 de
i8CVS Domenico
- Original Message -
From: Russ Ramirez russ.rami...@gmail.com
To: amsat-bb@amsat.org
Sent: Wednesday, August 14
-852
This instrument is currently used by the Electricity Power
Companies in England.
73 de
i8CVS Domenico
- Original Message -
From: Ernie w8eh.er...@gmail.com
To: Dave Larsen PhD d...@volcano.net
Cc: amsat-bb@amsat.org
Sent: Saturday, August 03, 2013 4:52 PM
Subject: [amsat-bb] Re
Hi Dave, N6CO
If you don't live very close to a big city probably there are sparks
into one or more high voltage defective insulators carrying AC
power to your town and very close to your antennas.
73 de
i8CVS Domenico
- Original Message -
From: Dave Larsen PhD d...@volcano.net
Hi Dave, N6CO
To find out from where the noise come out you need a MFJ-852 Meter A/C
Line Noise Meter visible in the following internet address:
http://www.mfjenterprises.com/Product.php?productid=MFJ-852
It is currently used by the Electricity Companies in England.
73 de
i8CVS Domenico
Hi Pavel, CO7WT
My article is a pdf file about 3 MB long and it was rejected bak to me by
your system.
Sorry !
73 de
i8CVS Domenico
- Original Message -
From: Mail Delivery Service postmas...@tin.it
To: domenico.i8...@tin.it
Sent: Monday, July 22, 2013 11:37 AM
Subject: Delivery
Hi Rolf, NR0T
I have routed your webserver address to AMSAT-BB so that others interested to
the 1/2 Wave cavity filter design can download it directly from your webserver
Thanks
73 de
i8CVS Domenico
- Original Message -
From: Rolf Krogstad
To: i8cvs ; co...@frcuba.co.cu ; pa
of receiving a less strenght of Sun-Noise.
73 de
i8CVS Domenico
- Original Message -
From: David Palmer KB5WIA kb5...@amsat.org
To: Rodney Waln kc0...@yahoo.com
Cc: amsat-bb@amsat.org
Sent: Thursday, July 18, 2013 7:15 PM
Subject: [amsat-bb] Re: Antenna direction calibration
I actually use
in italian for Radio Rivista 10/1998
I suggest you to read also my article:
Experimental investigation of Quadrifilar Helix Antennas
published by the AMSAT Journal May/June 2004
Best 73 de
i8CVS Domenico
- Original Message -
From: Zilvinas, LY2SS zilvi...@augma.lt
Cc: AMSAT BB amsat-bb
the
downlink in the middle of the passband around 145.950 MHz (USB) moving
the RX tuning knob a little bit up and down on frequency until you hear
your CW coming back.
The rest of your station seems to be all OK.
Have fun.
73 de
i8CVS Domenico
- Original Message -
From: Bill (W1PA) w
Hi Jim K8ZZU
Good idea to sell all that stuff because we don't have a HEO satellite to
use those antennas and downconverters.
73 de
i8CVS Domenico
- Original Message -
From: James Sanford k8...@sbcglobal.net
To: amsat bb amsat-bb@amsat.org
Sent: Monday, June 17, 2013 3:55 PM
Subject
Hi K4FEG
If you like to know for sure when a satellite is into eclipse or not use
please InstantTrack.
Option 5 Multiple Satellite Co-visibility will answere to your
question.
73 de
i8CVS Domenico
- Original Message -
From: Wayne Estes w...@charter.net
To: amsat-bb@amsat.org
Sent
Hi Les, N1LF
WIMO antennas are suitable for your needs.
http://www.wimo.com/framesetp_e.html
73 de
i8CVS Domenico
- Original Message -
From: Les Rayburn l...@highnoonfilm.com
To: AMSAT Mailing List amsat-bb@amsat.org
Sent: Thursday, June 06, 2013 6:03 AM
Subject: [amsat-bb] Best
into the pdf file
and are sold separately.
73 de
i8CVS Domenico
- Original Message -
From: Les Rayburn l...@highnoonfilm.com
To: AMSAT Mailing List amsat-bb@amsat.org
Sent: Thursday, June 06, 2013 6:03 AM
Subject: [amsat-bb] Best Antennas for Attic (Short Booms)
I'm in the process of upgrading
73 de
i8CVS Domenico
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Ta
instead of 50 kelvin
The following calculation is easer than the previous one because
uses directly the RADAR equation.
LINK BUDGED CALCULATIONS by i8CVS
We consider the ISS like a passive reflector with reflectivity
factor of 50 % to try a QSO by reflection Earth-ISS-Earth
DATA:
1
Hi, Aayush
First of all check on the rear of control box if pushing down the
azimuthal key to turn left there are 24 volt AC between the
terminal screws A4 and A6 and let me know
73 de
i8CVS Domenico
- Original Message -
From: Aayush Yadav aayushyadav...@gmail.com
To: AMSAT-BB
Ta
instead of 50 kelvin
LINK BUDGED CALCULATIONS by i8CVS
We consider the ISS like a passive reflector with reflectivity
factor of 50 % to try a QSO by reflection Earth-ISS-Earth
DATA:
1) The solar panels of the ISS plus the central body large like a
Boeing 747 have a metallic
- Original Message -
From: Jan van Muijlwijk
To: i8cvs
Sent: Friday, May 31, 2013 9:51 AM
Subject: Re: .[amsat-bb] Re: International Space Station-Bounce on 1296 MHz
Hi Domenico,
Thanks for your interest in the ISS reflections
Now about your questions.
1. I started calling Andreas
and vice versa.
http://sv1bsx.50webs.com/antenna-pol/polarization.html
It was impossible to me to contact my good friend Mak
SV1BSX because unfortunately he went SK about tree
years ago.
Please let me know if I am looking correct or it is only
my optical wrong wiew.
Thanks
73 de
i8CVS Domenico
Ta
instead of 50 kelvin
LINK BUDGED CALCULATIONS by i8CVS
We consider the ISS like a passive reflector with reflectivity
factor of 50 % to try a QSO by reflection Earth-ISS-Earth
DATA:
1) The solar panels of the ISS plus the central body large like a
Boeing 747 have a metallic
Von: i8cvs [mailto:domenico.i8...@tin.it]
Gesendet: Donnerstag, 30. Mai 2013 01:13
An: Andreas Imse
Betreff: Re: [amsat-bb] Re: International Space Station-Bounce on 1296 MHz
Wichtigkeit: Hoch
Hi Andreas, DJ5AR
Using the RADAR equation I would like to perform a link calculation of your
QSO
fun
73 de
i8CVS Domenico
- Original Message -
From: Mike Sprenger mikespren...@gmail.com
To: amsat-bb@amsat.org
Sent: Friday, May 31, 2013 2:51 AM
Subject: [amsat-bb] Circular Polarization with Two Yagis (Spacing)
Hi,
I'm sure this has been covered, I just can't find some detail
Hi Les, N1LS
Do you know the EIRP used at 1296 MHz by DJ5AR or by PA3FXB
to complete the International Space Station-Bounce on 1296 MHz CW
QSO using the ISS as a passive reflector ?
Thanks for the information
73 de i8CVS Domenico
- Original Message -
From: Les Rayburn l
i8CVS Domenico
- Original Message -
From: Stefan Wagener
To: i8cvs
Cc: Bill Acito ; Amsat - BBs
Sent: Thursday, May 23, 2013 1:36 AM
Subject: Re: [amsat-bb] Re: Amateur Satellites and the emergency on tornadoin
Oklahoma and Texas
Sorry Domenico,
the link you provide
that AMSAT tells falsehood to NASA
and ESA but as far I know AMSAT is not used to talk nonsense.
Bill W1PA (in New England, but I also live on the path of
the now 2nd deadliest tornado -- Worcester 1953)
73 de i8CVS Domenico
___
Sent via AMSAT-BB
Operators.
This satellite will play a valuable role in the national and international
scenario by providing a low cost readily accessible and reliable means of
communications during emergencies and calamities like floods ,
earthquakes etc.
73 de
i8CVS Domenico
- Original Message -
From: Ben
to the international community of Amateur
Radio Operators.
This satellite will play a valuable role in the national and international
scenario by providing a low cost readily accessible and reliable means of
communications during emergencies and calamities like floods ,
earthquakes etc.
73 de
i8CVS
scenario by providing a low cost readily accessible and reliable means of
communications during emergencies and calamities like floods ,
earthquakes etc.
73 de
i8CVS Domenico
- Original Message -
From: M5AKA m5...@yahoo.co.uk
To: i8cvs domenico.i8...@tin.it
Sent: Tuesday, May 21, 2013 10:14 AM
to the international community of Amateur
Radio Operators.
This satellite will play a valuable role in the national and international
scenario by providing a low cost readily accessible and reliable means of
communications during emergencies and calamities like floods ,
earthquakes etc.
73 de
i8CVS Domenico
.
73 de
i8CVS Domenico
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using four small coax relays and phasing harness on board
of the antenna.
You can see this modifications reading my articles Switching four
Polarization on a 70 cm Crossed Yagi published by the
AMSAT Journal March/April 2007 Part-1 and May/June 2007
Part-2
Have fun !
73 de
i8CVS Domenico
of the Antenna I have mounted
in the rear of reflector a round counterweight made of lead.
Have fun !
73 de
i8CVS Domenico
- Original Message -
From: Rolf Krogstad rolf.krogs...@gmail.com
To: amsat-bb@amsat.org
Sent: Monday, May 13, 2013 6:22 PM
Subject: [amsat-bb] Helical Antenna on 70 cm
band is still usable here.
We need not a new S band but a new P3E satellite.
Best 73 de
i8CVS Domenico
Hi there,
many of us will certainly remember the Mode S downlink of AMSAT
OSCAR-40 (P3-D) remember.
After initial skepticism, especially after the 2m transmitter
failed, Mode-S
% = 3348
1
When you run this motor in Europe with 50 Hz AC than the
speed is reduced to 2790 RPM
73 de
i8CVS Domenico
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MHz
73 de
i8CVS Domenico
- Original Message -
From: Art McBride kc6...@cox.net
To: 'i8cvs' domenico.i8...@tin.it; 'Douglas Phelps'
dphel...@ameritech.net; 'R.T.Liddy' k...@ameritech.net; 'Amsat -
BBs' amsat-bb@amsat.org
Sent: Saturday, April 20, 2013 7:47 PM
Subject: RE: [amsat-bb] Re
at wich side of the dipoles the inner conductors of the 50 ohm
feed lines are connected.
73 de
i8CVS Domenico
- Original Message -
From: Douglas Phelps dphel...@ameritech.net
To: R.T.Liddy k...@ameritech.net; amsat-bb@amsat.org
Sent: Tuesday, April 16, 2013 8:31 PM
Subject: [amsat-bb] Re
because of your previous 35+years activity on HF.
Read please my similar Ham Radio history from the HF and up in
QRZ.com
http://www.qrz.com/db/I8CVS
Best 73 de i8CVS Domenico
(81 years old and 58 years of Ham Radio from HF to Microwave)
___
Sent via AMSAT
Hi Ken, W7KKE
The answere to your question is clearly described into the zipped article
Circular Polarization by K4KJ, 5 MB long that I have sent to you in
a separate email.
73 de
i8CVS Domenico
- Original Message -
From: Ken Swaggart k.swagg...@charter.net
To: amsat-bb@amsat.org
Sent
antenna
and without this information it's very difficult to answere your question.
73 de
i8CVS Domenico
- Original Message -
From: Ken Swaggart k.swagg...@charter.net
To: i8cvs domenico.i8...@tin.it; Amsat - BBs amsat-bb@amsat.org
Sent: Monday, March 04, 2013 5:02 PM
Subject: Re: [amsat
note from i8CVS
Hi All
It is very sad for me to know that Walter Maxell, W2DU died. I was in touch
with him by email for many years and he was very friendly and plenty of
explanations to me about my transmission lines problems.
I missed a gread friend.
The material published into the W2DU book
polarizations you need two separate
antennas swichable with a coax relay.
In a separate email I have sent to you the best original article on helix
antennas written by Walter Maxell W2DU.
More information on QFH antennas from W2DU are available here:
http://w2du.com/
73 de i8CVS Domenico
than any other satellite station
with a similar set-up is potentially able to hear him self and contact
you.
Your set-up using a separate TX and a separate RX seems to be just
it is necessary for a good satellite operation.
73 de
i8CVS Domenico
- Original Message -
From: Kevin Muenzler
.
73 de
i8CVS Domenico
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Hi Joe,
Thank you very much for forwarding my observations to David Hove
of NIST Metrology.
I am very interested to know the David Hove response when you get it.
73 de
i8CVS Domenico
- Original Message -
From: Joe Leikhim rhyol...@nettally.com
To: amsat-bb@amsat.org
Sent: Saturday
correspond a Noise
Temperature T for a Noise Factor = 1.99, than
T = (1.995 -1) x 290 = 288.62 kelvin
On the other side referring T to 140 kelvin instead of 290 kelvin
than a Noise Figure of 3 dB will correspond to a Noise Temperature
of T = (1.995 -1) x 140 = 139.33 kelvin.
Best 73 de
i8CVS
° in the south
to the end position 180°.
--
73 de
i8CVS Domenico
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suggested.
Since the voltage regulator 7806 often oscillates the only cure is to
solder at the input and output of it a 2,2 microfarad 35 volt tantalum
capacitor in parallel with a 100 kpF 100 volt ceramic capacitor.
73 de
i8CVS Domenico
- Original Message -
From: HB9OMQ hb9...@bluewin.ch
but the same value.
Have fun
73 de
i8CVS Domenico
- Original Message -
From: tok...@myranch.com
To: amsat-bb@amsat.org
Sent: Wednesday, November 28, 2012 10:00 PM
Subject: [amsat-bb] G5400B Rotor Problem
Got some unexpected time today to look at the rotor. First I set the
output at pin 6
the autorization by the FCC
73 de
i8CVS Domenico
- Original Message -
From: Greg D ko6th.g...@gmail.com
To: apbid...@mailaps.org
Cc: AMSAT-BB amsat-bb@amsat.org
Sent: Wednesday, November 21, 2012 5:31 AM
Subject: [amsat-bb] Re: Allocations in L-band
I believe it was Oscar-7.
Greg
termination.
The 2 meter section act as a low-pass filter and the 70 cm port as
a high-pass filter while the 50 ohm termination dissipates the
435 MHz signal.
73 de
i8CVS Domenico
- Original Message -
From: PE0SAT | Amateur Radio pe0...@vgnet.nl
To: Dimitry Borzenko di...@iname.com
Cc
for 5760 MHz
The article written by Rick Campbell, KK7B contains all
PCB plains and a list of material needed for it.
I hope this helps
73 de
i8CVS Domenico
- Original Message -
From: Lizeth Norman normanliz...@gmail.com
To: kc6...@cox.net
Cc: amsat-bb@amsat.org
Sent: Monday, November 12, 2012
was not able to contact John K3PGP
because he do not respond anymore to any email
73 de
i8CVS Domenico
- Original Message -
From: Dave Webb KB1PVH kb1...@gmail.com
To: Nick Pugh quadp...@bellsouth.net
Cc: Amsat-bb@amsat.org
Sent: Sunday, November 11, 2012 1:01 PM
Subject: [amsat-bb] Re
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