60dBi is abt 57dB
It means 10exp5,7
ERP was 400x10exp5,7 W
- Original Message -
From: Fabio A iw8...@amsat.org
To: AMSAT-BB@amsat.org
Sent: Tuesday, April 20, 2010 8:26 PM
Subject: [amsat-bb] Re: Arecibo on 432 MHz Moon Bounce (some calculations)
Hello all,
just a curiosity, how did
Hi!
Omar XE1AO will be in grid DK88 for the AO-27 pass at 2050 UTC
today. Omar did not mention if he would use his normal call or
4B1AO with the special prefix XE hams are allowed to use this
year.
Good luck and 73!
Patrick WD9EWK/VA7EWK
http://www.wd9ewk.net/
NASA Observes Ash Plume of Icelandic Volcano -
http://tinyurl.com/y5ucox7
Clint Bradford, K6LCS
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Omar did not mention if he would use his normal call or
4B1AO with the special prefix XE hams are allowed to use this
year.
He will be using 4B1AO
Good luck everybody.
Rafael / XE2RV / DM41mh
Please be advised that tickets for the AMSAT-TAPR banquet at Dayton will not
be sold at the booth. All tickets must be purchased at the AMSAT store
found on the AMSAT website.
--
73- Martha
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Sent via amsat...@amsat.org. Opinions expressed are those
Of course, this ia all rubbish as the stated power of 243TeraWatts (READ BELOW
CAREFULLY) is clearly not true.
That would require an antenna gain of, in the regeon of, 120dB.
On 21-Apr-10 17:49, i8cvs wrote:
The only official data given for Arecibo by WF1F are the following :
The 1,000 foot
Some great SDO pics and videos at
http://www.nasa.gov/mission_pages/sdo/news/briefing-materials-20100421.html
73 Trevor M5AKA
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Hey Everybody--
The CubeSat workshop at Cal Poly is today through Friday. Presentations
are being streamed live, and archived for future viewing:
http://www.ustream.tv/channel/CubeSatWorkshop/v3
More information:
http://cubesat.org/index.php/workshops/upcoming-workshops
Thanks!
--
Bryan
W1RJA EME event, Echoes of Apollo
Aside of the Pickle dipole did any one have an idea of their setup? (Amp
power and # of beam element) A linear amp and the beam stacking
is giving the required ERP on the TX side and the 3db stacking gain seems to
make the difference between reception just
- Original Message -
From: Nigel Gunn G8IFF/W8IFF ni...@ngunn.net
To: i8cvs domenico.i8...@tin.it
Cc: Fabio A iw8...@amsat.org; AMSAT-BB amsat-bb@amsat.org; Mateusz
sq7...@poczta.onet.pl
Sent: Wednesday, April 21, 2010 9:07 PM
Subject: Re: [amsat-bb] Re: Arecibo on 432 MHz Moon Bounce
What was written was (243 million, 902 thousand, 443 units) million watts.
That's 243 Terawatts.
On 21-Apr-10 21:23, i8cvs wrote:
I disagree with your numbars:
1 tera watt =1 TW = 1 x 10^12 watt or 1,000,000,000,000 watt
1 mega watt = 1MW = 1 x 10^6 watt or 1,000,000 watt or 1 million watt
Domenico: I suspect that the difference of opinion has to do with the
difference in punctuation (',' vs. '.') used with large numbers.
In typical American usage,
243,902,443 Million Watts = 243,902,443,000,000 watts = 243.9 trillion watts
243.902 443 million watts = 243,902,443 watts =
- Original Message -
From: Nigel Gunn G8IFF/W8IFF ni...@ngunn.net
To: i8cvs domenico.i8...@tin.it
Cc: Fabio A iw8...@amsat.org; AMSAT-BB amsat-bb@amsat.org; Mateusz
sq7...@poczta.onet.pl
Sent: Wednesday, April 21, 2010 11:37 PM
Subject: Re: [amsat-bb] Re: Arecibo on 432 MHz Moon Bounce
Luc,
2 x 31 el K1FO yagis with a preamp on the splitter and an 8938 running ~ 1
KW.
73,
Mike, N1JEZ
AMSAT 29649
A closed mouth gathers no feet
- Original Message -
From: Luc Leblanc luclebla...@videotron.ca
Subject: [amsat-bb] W1RJA EME event, Echoes of Apollo
W1RJA EME event,
Agreed.
The only thing, other than for times and dates, that I write between numbers is
a decimal point.
Commas and dots to split numbers into groups of three have no use.
OK, I might write 5 megawatts as 5E6 watts.
On 21-Apr-10 22:22, i8cvs wrote:
Wath make confusion in the WF1F
People need to learn engineering significance. Just because a
calculator spits out 9 digits of precision, using them all shows
a lack of understanding. The value is 244 million watts. The
significance of all the other digits is absolutely meaningless!
The original post was about 400 watts and
That because we English do it that way. The rest of the Europe, Germany
and France for instance, seem to like inserting a comma instead!
:-D
David
KG4ZLB
On 4/21/2010 18:45, Nigel Gunn G8IFF/W8IFF wrote:
Agreed.
The only thing, other than for times and dates, that I write between
And, as usual, your opinion is absolutely true.
Only needs to be to the precision that you can measure or the nearest
preferred value.
On 21-Apr-10 22:57, Robert Bruninga wrote:
People need to learn engineering significance. Just because a
calculator spits out 9 digits of precision, using
Comma or no comma, shouldn't matter
1000 mega watts or 1,000 Mega watts is still one thousand million
watts! NOT one thousands watts. true?
The Original Rolling Ball Clock
Idle Tyme
Idle-Tyme.com
http://www.idle-tyme.com
On 4/21/2010 6:14 PM, David - KG4ZLB wrote:
That because we English do
Is it the original?
I had a mass produced plastic one (with a 50Hz motor) back in the early 1980's
(or earlier).
Unfortunately, your web site doesn't appear to give dates.
On 21-Apr-10 23:28, Idle-Tyme wrote:
The Original Rolling Ball Clock
Idle Tyme
Idle-Tyme.com
http://www.idle-tyme.com
All,
I will be active this Thursday-Saturday from the northern lower
peninsula of Michigan--primarily grid square EN74. Despite the fact
that Traverse City is located within EN74, this is a rarely activated
grid on satellite. I plan to operate as many passes as my schedule
time permits to give
Is anyone else having problems downloading data from LoTW for N3FJP's AC
Log?? I have not been able to download data for about 2 weeks. I can
upload.
I get an error saying:
The data file did not complete normally. Please try downloading the file
again.
I have tried about 25 times.
- Original Message -
From: Idle-Tyme n...@mwt.net
To: amsat-bb@amsat.org
Sent: Thursday, April 22, 2010 1:28 AM
Subject: [amsat-bb] Re: Arecibo on 432 MHz Moon Bounce (some calculations)
Comma or no comma, shouldn't matter
1000 mega watts or 1,000 Mega watts is still one thousand
- Original Message -
From: tosca...@umn.edu
To: i8cvs domenico.i8...@tin.it
Cc: Nigel Gunn G8IFF/W8IFF ni...@ngunn.net; AMSAT-BB
amsat-bb@amsat.org; Fabio A iw8...@amsat.org
Sent: Thursday, April 22, 2010 12:04 AM
Subject: Re: [amsat-bb] Re: Arecibo on 432 MHz Moon Bounce (some
Yes this is the original made by the person that made and trained most
of the assemblers all those years ago. Read the history page it's
pretty interesting.
The plastic junk one was a license on our patent. We thought of it like
a Mc Donalds quarter pounder with cheese vs a nice sirloin
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