[amsat-bb] Re: AO-51 Down

2010-06-15 Thread Pierre van Deventer
Drew wrote:
 
"We have been very close to the low battery trip points due to continued
attempted use in eclipse in the southern hemisphere."
 
The Southern hemisphere is a fairly large area, please be more specific. The
statement you made creates doubt about our operating habits implying that we
are irresponsible operators.
 
AO-51 is not in eclipse whilst it in range of Southern Africa. This is based
on the information as given by SatPC32.
 
Greetings.
 
73, Pierre ZS6BB
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[amsat-bb] Re: AO-51 Down??

2010-06-15 Thread Ng, Peter
As much as I hate to say this, but I agree, given the state AO-51 is in.  If 
only to prolong its life, I vote to turn it off or switch to a less used 
mode...just my two cents.

73's Peter VE7NGP

-Original Message-
From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On Behalf 
Of Luc Leblanc
Sent: June 15, 2010 21:17
To: amsat-bb@amsat.org
Subject: [amsat-bb] Re: AO-51 Down??




I don't know if it is sound to let AO-51 on during the Field Day? It look like 
a bit suicidal!!


"-"


Luc Leblanc VE2DWE
Skype VE2DWE
www.qsl.net/ve2dwe
DSTAR urcall VE2DWE
WAC BASIC CW PHONE SATELLITE

 
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[amsat-bb] Re: AO-51 Down??

2010-06-15 Thread Luc Leblanc



I don't know if it is sound to let AO-51 on during the Field Day? It look like 
a bit suicidal!!


"-"


Luc Leblanc VE2DWE
Skype VE2DWE
www.qsl.net/ve2dwe
DSTAR urcall VE2DWE
WAC BASIC CW PHONE SATELLITE

 
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[amsat-bb] Re: AO-51 Down??

2010-06-15 Thread Alan Cresswell
Hi Drew,

The point of my email was to suggest that based on my observations, and
knowledge of operations "down under", the fact that AO-51 is sometimes on in
eclipse may not necessarily be caused by bad operators.  There seems to be
evidence to indicate that the transponder can be triggered for other
reasons.  There is only a very small group of regular operators in VK and I
am the only currently active ZL on AO-51 and we are all well aware of the
eclipse problem.  A turn on at 1758z for example is 3:58am local time in VK.
None of the regular operators operate at that time of the day.  I can not
guarantee of course that some rogue operator who never otherwise appears on
the satellites is triggering the system but it seems unlikely.  
As a general observation I would point out that operations in this part of
the world differ markedly from the Northern hemisphere.  I have never to my
knowledge exchanged a grid square.  A typical pass consists of 2 to 5
stations, all well known to each other, and we simply have a round table
discussion. It is this fact that gives me reasonable confidence as to
whether or not there is operation in eclipse.

73
Alan
ZL2BX

-Original Message-
From: Andrew Glasbrenner [mailto:glasbren...@mindspring.com] 
Sent: Wednesday, 16 June 2010 02:14
To: Alan Cresswell
Cc: 'Rick - WA4NVM'; 'AMSAT BB'
Subject: Re: [amsat-bb] Re: AO-51 Down??

Alan Cresswell wrote:
> Hi Drew,
>
> Well the southern hemisphere is a big place and I can assure you there is
no
> operation in eclipse from VK/ZL.  I monitor almost all evening passes here
> which occur shortly after the eclipse and on a number of occasions I have
> noted that the transponder was on at my AOS.  It also tends to drop out
> shortly after AOS so given the length of the timer this would indicate a
> turn on somewhat south of ZL.  This would also correspond to the time
AO-51
> comes out of eclipse.  My first guess would be that sometimes the
> transponder is triggered as it comes out of eclipse as there are no
stations
> south of ZL to trigger it.  There is also continual switching between the
> normal and reduced power levels during the evening passes.  I presume this
> indicates a marginal condition so perhaps usage down this way should be
> limited for a time after eclipse as well to give the batteries time to
> recover.
>
> Alan
> ZL2BX
>   
>
I'm looking at a Whole Orbit Data file right now from 6/12 that 
indicates use at 2116Z and 1758Z, over Australia and New Zealand, in 
eclipse. Other files show similar patterns. I'm sure however that we 
will have the exact same problems, and worse, over the northern 
hemisphere during our winter eclipses! It may also be that the PL 
decoder is occasionally decoding falsely, which would mean a longer 
sample time might help.

The software does not increase power after eclipse until a set voltage 
is reached. I think the solution will be to lower the intermediate power 
step to zero, as the low one is, and then there will be no use possible 
during eclipse, but also with occasional periodic dropouts during poor 
attitudes during the rest of the orbit. Regardless, my comment was not 
meant as a slight to anyone, and was merely based on observation of the 
WOD. We can see pretty much everything that happens in 30s intervals.

Thanks for the observations.

73, Drew KO4MA


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[amsat-bb] Re: AO-51 Down??

2010-06-15 Thread Andrew Glasbrenner
Alan Cresswell wrote:
> Hi Drew,
>
> Well the southern hemisphere is a big place and I can assure you there is no
> operation in eclipse from VK/ZL.  I monitor almost all evening passes here
> which occur shortly after the eclipse and on a number of occasions I have
> noted that the transponder was on at my AOS.  It also tends to drop out
> shortly after AOS so given the length of the timer this would indicate a
> turn on somewhat south of ZL.  This would also correspond to the time AO-51
> comes out of eclipse.  My first guess would be that sometimes the
> transponder is triggered as it comes out of eclipse as there are no stations
> south of ZL to trigger it.  There is also continual switching between the
> normal and reduced power levels during the evening passes.  I presume this
> indicates a marginal condition so perhaps usage down this way should be
> limited for a time after eclipse as well to give the batteries time to
> recover.
>
> Alan
> ZL2BX
>   
>
I'm looking at a Whole Orbit Data file right now from 6/12 that 
indicates use at 2116Z and 1758Z, over Australia and New Zealand, in 
eclipse. Other files show similar patterns. I'm sure however that we 
will have the exact same problems, and worse, over the northern 
hemisphere during our winter eclipses! It may also be that the PL 
decoder is occasionally decoding falsely, which would mean a longer 
sample time might help.

The software does not increase power after eclipse until a set voltage 
is reached. I think the solution will be to lower the intermediate power 
step to zero, as the low one is, and then there will be no use possible 
during eclipse, but also with occasional periodic dropouts during poor 
attitudes during the rest of the orbit. Regardless, my comment was not 
meant as a slight to anyone, and was merely based on observation of the 
WOD. We can see pretty much everything that happens in 30s intervals.

Thanks for the observations.

73, Drew KO4MA

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[amsat-bb] Re: AO-51 Down??

2010-06-15 Thread Alan Cresswell
Hi Drew,

Well the southern hemisphere is a big place and I can assure you there is no
operation in eclipse from VK/ZL.  I monitor almost all evening passes here
which occur shortly after the eclipse and on a number of occasions I have
noted that the transponder was on at my AOS.  It also tends to drop out
shortly after AOS so given the length of the timer this would indicate a
turn on somewhat south of ZL.  This would also correspond to the time AO-51
comes out of eclipse.  My first guess would be that sometimes the
transponder is triggered as it comes out of eclipse as there are no stations
south of ZL to trigger it.  There is also continual switching between the
normal and reduced power levels during the evening passes.  I presume this
indicates a marginal condition so perhaps usage down this way should be
limited for a time after eclipse as well to give the batteries time to
recover.

Alan
ZL2BX

-Original Message-
From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On
Behalf Of Andrew Glasbrenner
Sent: Wednesday, 16 June 2010 00:54
To: Rick - WA4NVM
Cc: AMSAT BB
Subject: [amsat-bb] Re: AO-51 Down??

Rick - WA4NVM wrote:
> Hi All,
>
> I haven't heard the bird the last two orbits.  I double checked the
sked no change.
>
> 73 all,
>
> Rick WA4NVM
>   
We have been very close to the low battery trip points due to continued 
attempted use in eclipse in the southern hemispere. I'll try to reset 
things first available pass, probably tomorrow AM EDT.

73, Drew KO4MA
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[amsat-bb] Re: AO-51 Down??

2010-06-15 Thread Andrew Glasbrenner
Rick - WA4NVM wrote:
> Hi All,
>
> I haven't heard the bird the last two orbits.  I double checked the sked 
> no change.
>
> 73 all,
>
> Rick WA4NVM
>   
We have been very close to the low battery trip points due to continued 
attempted use in eclipse in the southern hemispere. I'll try to reset 
things first available pass, probably tomorrow AM EDT.

73, Drew KO4MA
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[amsat-bb] AO51

2010-06-15 Thread Dale Hershberger
Hello,

I have not been able to make connection thru the repeater on AO51.  I was
successful yesterday.  Doppler did track the down link freq.  I could
not hear my down link signal.

Dale
KL7XJ
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[amsat-bb] AO-51 Down??

2010-06-15 Thread Rick - WA4NVM
Hi All,

I haven't heard the bird the last two orbits.  I double checked the sked no 
change.

73 all,

Rick WA4NVM
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[amsat-bb] W1AW/4 TI SC Contacts

2010-06-15 Thread Mark Spencer
Thanks to all who helped me with the satellite demonstration during the ARRL
Teachers Institute in SC (EM84) today on AO27 around 1815Z today.  If you
would like a card for the contact, send a card to my home address (WA8SME),
no SASE required.

 

Mark

 

Mark Spencer, WA8SME

Education and Technology Program Coordinator

ARRL, the national association for Amateur RadioT

mspen...@arrl.org

www.arrl.org/education-technology-program

www.arrl.org/teachers-institute-on-wireless-technology

530-495-9150

 

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[amsat-bb] Looking for KE3LB

2010-06-15 Thread Don
Trying to get in touch With John KE3LB. I think I must have a bad address
for him so John if your are reading this contact me wb8...@arrl.net .If
anyone knows John ask him to drop me a e-mail.

I am trying to QSL a contact and got a return to sender  form his listed
address on QRZ . Thanks for any help

73 WB8ZOM

Don

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[amsat-bb] Radio Hams Launch Today

2010-06-15 Thread Trevor .
Shannon Walker KD5DXB, Doug Wheelock KF5BOC and Fyodor Yurchikhin RN3FI launch 
for the space station today. 

The launch should be shown on NASA TV at 21:35 UT (17:35 EDT) at 

http://www.nasa.gov/multimedia/nasatv/index.html

73 Trevor M5AKA



  


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[amsat-bb] Re: ICOM 471A Output N Connector replacement

2010-06-15 Thread G. Beat


Mike - 



Contact Scott Malcom, KA7MEF Technician and Lead Go'fer at MTS Repair. 

  

Scott worked for Icom Service, when this radio was new, and should be able to 
provide 

the necessary insight for your work.  

He also has access to some parts from junked/donor radios of that classic Icom 
era. 



Malcom Technical Support (MTS) 
5130 Jackson Hwy 
Toledo, WA 98591-8680 

Email: m...@toledotel.com 

Voice Mail: 360 864 8438 




eHam.net reviews (126) scoring 4.9 out of 5.0 (excellent rating) 

http://www.eham.net/reviews/detail/1786 



greg 

w9gb 



-- 

Message: 8 
Date: Tue, 15 Jun 2010 06:16:31 GMT 
From: "mike casey"  
Subject: [amsat-bb]  ICOM 471A Output N Connector replacement 
To: amsat-bb@amsat.org 
Message-ID: <20100615.021631.2646...@webmail05.dca.untd.com> 
Content-Type: text/plain; charset=windows-1252 

Has anyone replaced the female N connector on the IC 471A, 25 watt tranceiver 
PA module? It seems as if the heat sink is trapped between the N connector 
barrel and the PA circuit board. Unless the connector barrel pulls off of the 
pin, I see no way of removing it, or the circuit board to get at the pin. I 
don't want to use to much force in pulling off the barrel. Perhaps heating the 
pin might release the barrel. Any suggestions? Should I send it to Icom and let 
them worry about it? 
 
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[amsat-bb] ICOM 471A Output N Connector replacement

2010-06-15 Thread mike casey
Has anyone replaced the female N connector on the IC 471A, 25 watt tranceiver 
PA module? It seems as if the heat sink is trapped between the N connector 
barrel and the PA circuit board. Unless the connector barrel pulls off of the 
pin, I see no way of removing it, or the circuit board to get at the pin. I 
don't want to use to much force in pulling off the barrel. Perhaps heating the 
pin might release the barrel. Any suggestions? Should I send it to Icom and let 
them worry about it?

Artery Clearing Secret
Nobel Prize Winning discovery cuts artery plaque by incredible 50%.
http://thirdpartyoffers.netzero.net/TGL3241/4c171b0a911a53e57d6st02duc
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[amsat-bb] Re: CP antenna from 2 WiFi panels

2010-06-15 Thread i8cvs
- Original Message - 
From: "Edward R Cole" 
To: "John Belstner" 
Cc: "AMSAT-BB" 
Sent: Tuesday, June 15, 2010 8:45 AM
Subject: [amsat-bb] Re: CP antenna from 2 WiFi panels

> Antenna arrived today.  Shipping was $9.30 so total of $24.29.  All 
> white plastic encapsulated: 4.5x4.5x1.0 inch and has four mounting 
> holes on the flange.  I will mount it on a 1/8-inch thick aluminum 
> plate attached to my satellite elevation crossboom using 
> U-bolts.  Very nice looking workmanship.  8 dBi gain translates 
> loosely to 6 dBd ( about the free-space gain of a 3-element yagi.
> 
> 73, Ed - KL7UW

Hi Ed, KL7UM

What antenna model you purchased ? And for what use ? 

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

Tanks

73" de 

i8CVS Domenico






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[amsat-bb] Re: CP antenna from 2 WiFi panels

2010-06-15 Thread Edward R Cole
Antenna arrived today.  Shipping was $9.30 so total of $24.29.  All 
white plastic encapsulated: 4.5x4.5x1.0 inch and has four mounting 
holes on the flange.  I will mount it on a 1/8-inch thick aluminum 
plate attached to my satellite elevation crossboom using 
U-bolts.  Very nice looking workmanship.  8 dBi gain translates 
loosely to 6 dBd ( about the free-space gain of a 3-element yagi.

73, Ed - KL7UW

At 06:58 AM 6/9/2010, John Belstner wrote:
>Good price Ed.  Its not worth the time trying to make something when 
>you can buy something for $15.
>Good luck and let me know how it works.
>
>73, John
>
>On Jun 8, 2010, at 10:15 PM, Edward R Cole wrote:
>
> > Thanks, John!
> >
> > At 02:37 PM 6/7/2010, John Belstner wrote:
> >> Hi Domenico,
> >>
> >> 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
> >
> > Just ordered one for $14.99+ shipping.  I comes with 12-inch coax 
> with NF connector.  Other cables and /or connectors for $36.99
> >
> >
> >> They are about the same price too.
> >>
> >> 73, John
> >>
> >
> >
> > 73, Ed - KL7UW, WD2XSH/45
> > ==
> > BP40IQ   500 KHz - 10-GHz   www.kl7uw.com
> > EME: 144-600w, 432-100w, 1296-60w, 3400-fall 2010
> > DUBUS Magazine USA Rep dubus...@hotmail.com
> > ==
> >


73, Ed - KL7UW, WD2XSH/45
==
BP40IQ   500 KHz - 10-GHz   www.kl7uw.com
EME: 144-600w, 432-100w, 1296-60w, 3400-fall 2010
DUBUS Magazine USA Rep dubus...@hotmail.com
==

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