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CX2SA > SATDIG 14.10.11 04:25l 776 Lines 27193 Bytes #999 (0) @ WW
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To : SATDIG@WW
Today's Topics:
1. Re: Which preamp to buy for 2m? (Burns Fisher)
2. Re: G5500 Elevation Rotator Short Circuit? (Tim Cunningham)
3. Re: Oscarlocator (Joe)
4. Tracking program performance post chicken little date.
(SatPC32 and GPredict) (Thomas Doyle)
5. Re: Tracking program performance post chicken little date.
(SatPC32 and GPredict) (g0mrf@xxx.xxxx
6. Ham Radio Deluxe Sat Tracking Question (Dave Marthouse)
7. Re: Oscarlocator (George and Cheryl Abbott)
8. Re: Oscarlocator (Dee)
9. Oscarlocator (Kevin Deane)
10. Re: Oscarlocator (Dave Guimont)
11. Special Event Station K7P (Dale Hershberger)
12. Re: Special Event Station K7P (Dale Hershberger)
13. Re: Oscarlocator (Clayton Coleman W5PFG)
14. Re: Special Event Station K7P (Dale Hershberger)
15. Re: Tracking program performance post chicken little date.
(SatPC32 and GPredict) (Charles Suprin)
16. Re: Oscarlocator (Joe)
----------------------------------------------------------------------
Message: 1
Date: Thu, 13 Oct 2011 15:26:17 -0400
From: Burns Fisher <burns@xxxxxx.xx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Which preamp to buy for 2m?
Message-ID:
<CABX7KxVFCMZko4cL-Qa1Ufoz7aTXPfy1P_Y2Ks2eWRgABv9YgA@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
First, my sincere apologies...I think I managed to resend the entire digest
to the list. I HATE it when people do that but now I know how easy it is to
do accidentally. Sorry.
----
Now to what I was going to say: I have the SSB SP-2000 and I'm also very
happy with it. It seems to do auto RF switching well down to under 2
watts. (Some auto-switching are only spec'ed to switch down to 8 or 10W).
It also bypasses itself if you just cut the power (to be expected, I
guess). I'm using it with a second power feedline (which you can connect
with a PL259) since I don't happen to have 13.8V phantom power available.
On the other hand, it is about the most expensive 2m preamp you can find :-(
Where to get it in the US? ssbusa.com appears to be a distributer. No one
answered the phone, and they never returned my call. Another vendor (take
it from whence it came) said they were phasing out. But in any case, Array
Solutions was very helpful and fast and sent me my SP-2000 in a very short
time. As I recall I had to talk to them on the phone since they did not
have the SSB stuff fully integrated into their web site yet, but it was
worthwhile. Array Solutions also advertises in QST :-)
Burns, W2BFJ
> Message: 14
> Date: Thu, 13 Oct 2011 10:19:24 -0400
> From: "Stephen E. Belter" <seb@xxxxxx.xxx>
> To: Tim Goodrich <tim@xxxxxxxxxxx.xxx>, "amsat-bb@xxxxx.xxxx
> <amsat-bb@xxxxx.xxx>
> Subject: [amsat-bb] Re: Which preamp to buy for 2m?
> Message-ID:
> <51668A33220E754EABE6583357ECEE2D79CD61B2@xxxxxxxx.xxxxxx.xxxxx>
> Content-Type: text/plain; charset="us-ascii"
>
> Tim,
>
> I own SSB preamps, the SP-2000 (2 meter) and SP-7000 (70 cm). They have
> worked very well for me, both on my Icom IC-821 (powered by the radio) and
> with my FUNcube Dongle (powered with an external bias-T from ARR). The SSB
> preamps have helical filters on the front end which should help in your Los
> Angeles RF environment.
>
> You have at least four sources for the SSB preamp:
>
> 1. Direct from SSB in Germany, www.ssb.de
>
> 2. From SSB-Electronics USA, www.ssbusa.com
>
> 3. From Array Solutions, www.arraysolutions.com
>
> 4. From Universal Radio, www.universal-radio.com
>
> 73, Steve N9IP
> --
>
> -----Original Message-----
> From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
> Behalf Of Tim Goodrich
> Sent: Thursday, October 13, 2011 2:04 AM
> To: amsat-bb@xxxxx.xxx
> Subject: [amsat-bb] Which preamp to buy for 2m?
>
> Hi all,
>
> I just got a M2 2M4 and 420-50-11 to mount on my az/el rotor and go with my
> 736R. As I'm hoping to potentially work some EME with the big guns when
> conditions are just right, I'm wondering if anyone can provide advice on
> which preamp to get for 2m. I live in the Los Angeles metro area, so lots of
> noise/QRM, and also would like something to take advantage of the 736's
> preamp switch/voltage over coax option. In other words, something that
> doesn't require any complicated power/switching controls, if possible.
>
>
>
> Any suggestions?
>
>
>
> Thanks,
>
> Tim
>
> K6TW
>
>
------------------------------
Message: 2
Date: Thu, 13 Oct 2011 15:46:45 -0500
From: "Tim Cunningham" <tim_cunningham@xxxxxxx.xxx>
To: <clive@xxxxx.xx.xx>, "amsat" <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: G5500 Elevation Rotator Short Circuit?
Message-ID: <31BFCE00A59A448D814610F77EB91B74@xxxxx>
Content-Type: text/plain; format=flowed; charset="Windows-1252";
reply-type=response
All of the failures were specifically attributed to either a stuck relay in
the control box, a manual switch sticking (not releasing) on the front rotor
control panel, and a software or computer crash that continued to drive one
of the up, down, left, or right control lines.
73,
Tim - N8DEU
----- Original Message -----
From: "Clive Wallis" <list1@xxxxx.xx.xx>
To: "amsat" <amsat-bb@xxxxx.xxx>
Sent: Sunday, October 09, 2011 11:50 AM
Subject: [amsat-bb] Re: G5500 Elevation Rotator Short Circuit?
Many thanks Tim for your comments. From what you've said it sounds like
a faulty motor. In the ones you've repaired have you been able to
determine the cause of motor over heating?
The problems I've had in the past have always been due to water getting
into the units.
73 Clive G3CWV
Hitchin, North Hertfordshire, UK
On 07/10/2011 18:50, Tim Cunningham wrote:
> The common failure of the motor windings is caused by heat which
> causes the enamel coated wire to breakdown. When the enamel breaks
> down an inner winding short results.
>
> I have successfully rewound motor windings on these rotators just to
> say it could be done, but it takes some work (not recommended).
>
> I have never seen one of these motors with an open winding. The
> failure mode on the 8 that I have repaired were always enamel
> insulation breakdown as a result of overheating.
>
>
> Tim - N8DEU
>
>
> Sent from my HTC Tilt? 2, a Windows? Mobile phone
>
> -----Original Message----- From: Clive Wallis<amsat-bb@xxxxx.xx.xx>
> Sent: Friday, October 07, 2011 11:35 AM To:
> amsat<amsat-bb@xxxxx.xxx> Subject: [amsat-bb] G5500 Elevation Rotator
> Short Circuit?
>
> I wonder if this is a known fault. Recently the fuse on my G5500
> blew. The problem seems to be a short on one of the motor
> circuits.
>
> Checking the DC resistance at the control end, the resistance of one
> winding is 1.2 ohms, whereas all the other windings are 4.6 ohms.
>
> I could understand a motor burning out and going open circuit, but
> a short circuit seems less likely. I'm wondering if it could be a
> short on the cable at the rotator end, where it is subject to much
> bending. There's about 15 metres of cable.
>
> Any thoughts would be much appreciated. Unfortunately, at the
> present time I'm not able to inspect the rotator. It's stuck in the
> horizontal position, so I will still be able to use the antenna for
> low elevation passes.
>
> 73 Clive G3CWV
>
> Hitchin, North Hertfordshire, UK
> _______________________________________________ Sent via
> AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author. Not
> an AMSAT-NA member? Join now to support the amateur satellite
> program! Subscription settings:
> http://amsat.org/mailman/listinfo/amsat-bb
>
>
> _______________________________________________ Sent via
> AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author. Not
> an AMSAT-NA member? Join now to support the amateur satellite
> program! Subscription settings:
> http://amsat.org/mailman/listinfo/amsat-bb
>
_______________________________________________
Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 3
Date: Thu, 13 Oct 2011 16:40:07 -0500
From: Joe <nss@xxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Oscarlocator
Message-ID: <4E975AB7.6000106@xxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
wow thats a fancy one, it's in color!
mine was just a black and white line drawing!
Joe WB9SBD
The Original Rolling Ball Clock
Idle Tyme
Idle-Tyme.com
http://www.idle-tyme.com
On 10/13/2011 3:17 AM, Rich Dailey wrote:
> Someone on the list was inquiring about an Oscarlocator a while back.
> Just FYI, one is up on ebay. I'm not the seller, just came across it in one
> of my searches.
>
> http://www.ebay.com/itm/ws/eBayISAPI.dll?ViewItem&item=370549993740
>
> Rich, N8UX.
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
Message: 4
Date: Thu, 13 Oct 2011 16:57:48 -0500
From: Thomas Doyle <tomdoyle1948@xxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Tracking program performance post chicken little
date. (SatPC32 and GPredict)
Message-ID:
<CAHnRQR+8=fMhwwM5_T4LXxOrVo_nfxDuSZq09WqHsjM+apjVVw@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
All the hype over the chicken little contest caused me to wonder how
tracking programs will handle it.
I was looked into the Cal Poly CP6 and HAWKSAT1 satellites. The TLE data is
published on both Amsat and Celestrack lists. SatPC32 shows neither of the
satellites as moving. An error is generated when trying to select either of
them. I thought that perhaps they had decayed but had not been removed from
the TLE lists.
GPredict continues to track Az-El for CP6 in real time in the text display
but shows the elevation and altitude as negative and the up/down direction
as D (decayed) - it does not display CP6 on the map. I am assuming that CP6
has decayed. The elevation for CP6 goes up and down and the tracking value
change over time. Since the elevation is always negative perhaps GPredict is
tracking what would have happened if the earth was just a tiny point of mass
and the satellite is able to continue its downward descent. HAWKSAT1 shows
up as above ground and running in GPredict.
Since ARISSAT1 is probably going to decay fairly quickly I took a look at
predicting ahead using the great Preview tracking in SatPC32 to see how
decay is handled. After a couple of really bad years the coverage map for
ARISSAT1 looks better than ever starting just two years from now in 2014.
Unfortunately I could not figure out how to get GPredict to predict more
than 14 days in the future and did not want to fool around changing the
system clock.
I have wondered what the NORAD routines would do after decay and how
tracking programs that use the NORAD model would deal with it. Does the
NORAD model continue to track as if the earth was just a very small very
heavy point in space. A transparent 3D earof 'todays' keps
will give a vaild answer for decay date?
Looking at the keps, you have a number for decay rate. I reached the
conclusion that this could be a major source of inaccuracy as presumably the
value for decay rate will change as the satellite reduces altitude. It maybe
the case that decay rate follows a curve which is not replicated by the
program. Does anyone know if this is correct as it seems unlikely that
software available to us e.g. Nova / GPredict will include algorithms for
auto changing decay rate or for including other variables like sunspot
cycle. I believe these variables are accounted for in more advanced software
like AGI Satellite tool kit (STK)
Thanks
David G0MRF
-----Original Message-----
From: Thomas Doyle <tomdoyle1948@xxxxx.xxx>
To: amsat-bb <amsat-bb@xxxxx.xxx>
Sent: Thu, 13 Oct 2011 23:08
Subject: [amsat-bb] Tracking program performance post chicken little date.
(SatPC32 and GPredict)
All the hype over the chicken little contest caused me to wonder how
tracking programs will handle it.
I was looked into the Cal Poly CP6 and HAWKSAT1 satellites. The TLE data is
published on both Amsat and Celestrack lists. SatPC32 shows neither of the
satellites as moving. An error is generated when trying to select either of
them. I thought that perhaps they had decayed but had not been removed from
the TLE lists.
GPredict continues to track Az-El for CP6 in real time in the text display
but shows the elevation and altitude as negative and the up/down direction
as D (decayed) - it does not display CP6 on the map. I am assuming that CP6
has decayed. The elevation for CP6 goes up and down and the tracking value
change over time. Since the elevation is always negative perhaps GPredict is
tracking what would have happened if the earth was just a tiny point of mass
and the satellite is able to continue its downward descent. HAWKSAT1 shows
up as above ground and running in GPredict.
Since ARISSAT1 is probably going to decay fairly quickly I took a look at
predicting ahead using the great Preview tracking in SatPC32 to see how
decay is handled. After a couple of really bad years the coverage map for
ARISSAT1 looks better than ever starting just two years from now in 2014.
Unfortunately I could not figure out how to get GPredict to predict more
than 14 days in the future and did not want to fool around changing the
system clock.
I have wondered what the NORAD routines would do after decay and how
tracking programs that use the NORAD model would deal with it. Does the
NORAD model continue to track as if the earth was just a very small very
heavy point in space. A transparent 3D earth display would be very
interesting to use to view the post chicken little results - someone must
have one. Anyone know for sure ? HAWKSAT1 is still a bit of a mystery.
73 W9KE tom ...
roblem in hrd's satellite tracking program. When I am
tracking arissat-1 the satellite name is written on the screen correctly but
the voice announcements for aos, los and other alerts call it the
international space station. How can I fix the voice alerts? What files if
any can I edit to remedy this problem? Other than that odd behavior the
program works well. Any information would be appreciated.
Dave Marthouse N2AAM
dmarthouse@xxxxx.xxx
------------------------------
Message: 7
Date: Thu, 13 Oct 2011 19:24:50 -0400
From: "George and Cheryl Abbott" <ka1ajf@xxx.xxx>
To: "Joe" <nss@xxx.xxx>, <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: Oscarlocator
Message-ID: <685B6BFA48E24B9F921E3F47A015D9B6@xxxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=response
I may still have one at the bottom of an 18 gallon storage container.
-----Original Message-----
From: Joe
Sent: Thursday, October 13, 2011 5:40 PM
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Oscarlocator
wow thats a fancy one, it's in color!
mine was just a black and white line drawing!
Joe WB9SBD
The Original Rolling Ball Clock
Idle Tyme
Idle-Tyme.com
http://www.idle-tyme.com
On 10/13/2011 3:17 AM, Rich Dailey wrote:
> Someone on the list was inquiring about an Oscarlocator a while back.
> Just FYI, one is up on ebay. I'm not the seller, just came across it in
> one
> of my searches.
>
> http://www.ebay.com/itm/ws/eBayISAPI.dll?ViewItem&item=370549993740
>
> Rich, N8UX.
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
>
_______________________________________________
Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 8
Date: Thu, 13 Oct 2011 19:33:47 -0400
From: Dee <morsesat@xxxxxxxxx.xxx>
To: "'George and Cheryl Abbott'" <ka1ajf@xxx.xxx>, "'Joe'"
<nss@xxx.xxx>, amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Oscarlocator
Message-ID: <000001cc8a00$8e2feb80$aa8fc280$@xxxxxxxxx.xxx>
I was bidding on one against Drew and I let him win it---- I
them won at one of the Symposiums. It is now a part of my dog
and pony show-HA!
73,
Dee, NB2F
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx
[mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of George and
Cheryl Abbott
Sent: Thursday, October 13, 2011 7:25 PM
To: Joe; amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Oscarlocator
I may still have one at the bottom of an 18 gallon storage
container.
8.7B.14490.4EB779E4@xxxxxxxxxxxxx.xxxx.xx.xxx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
Take a look at OSCARgraphpredict In:
http://cid-1973adc8c1d3207c.skydrive.live.com/summary.aspx?sa=140581470
before we made our own Oscar locators....
73, Dave, WB6LLO
dguimon1@xxx.xx.xxx
Disagree: I learn....
Pulling for P3E...
------------------------------
Message: 11
Date: Thu, 13 Oct 2011 16:23:24 -0800
From: Dale Hershberger <daleh@xxxxxx.xxx>
To: amsat-bbs <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Special Event Station K7P
Message-ID: <4E9780FC.2000006@xxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
I know is very short notice. I have just put my gear together
to operate portable from BO40 tomorrow afternoon and possibly
Saturday afternoon as well. I will be in Homer, Alaska for the
annual Refuges on the air event. We will be operating on the HF
bands as well. We are located at the Alaska Maritime National Wildlife
Refuge
center. We operated last year from there as KL7YY.
This is to celebrate National Wildlife Refuge Week.
73,
KL7XJ
------------------------------
Message: 12
Date: Thu, 13 Oct 2011 17:10:23 -0800
From: Dale Hershberger <daleh@xxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Special Event Station K7P
Message-ID: <4E978BFF.4050303@xxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
I forgot to say that I will be on AO51 passes only with
my HT and Arrow ant.
Dale
KL7XJ
On 10/13/2011 4:23 PM, Dale Hershberger wrote:
> I know is very short notice. I have just put my gear together
> to operate portable from BO40 tomorrow afternoon and possibly
> Saturday afternoon as well. I will be in Homer, Alaska for the
> annual Refuges on the air event. We will be operating on the HF
> bands as well. We are located at the Alaska Maritime National
> Wildlife Refuge
> center. We operated last year from there as KL7YY.
> This is to celebrate National Wildlife Refuge Week.
>
> 73,
> KL7XJ
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite
> program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
Message: 13
Date: Thu, 13 Oct 2011 20:20:00 -0500
From: Clayton Coleman W5PFG <kayakfishtx@xxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Oscarlocator
Message-ID:
<CAPovOwcv+P=A-FOYShSz1Z4Q57NqM66ZDQYbi+U_U0grf-1r6w@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Seeing this kind of enthusiasm for "vintage" satellite gear might just
inspire some enterprising individual to produce some brand new "OSCAR
Locators."
On Thu, Oct 13, 2011 at 6:49 PM, Kevin Deane <summit496@xxxx.xxx> wrote:
>
> Anyone want to get rid of one I'll send you a SASE!
>
> Kevin
> KF7MYK
>
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
Message: 14
Date: Thu, 13 Oct 2011 17:24:52 -0800
From: Dale Hershberger <daleh@xxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Special Event Station K7P
Message-ID: <4E978F64.5010304@xxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
I have another correction to make!... The way it goes when it is short
notice
and trying to coordinate all. The correct grid is BO49 Not BP40. I
live in
BP40 and we will operate from Homer, AK in grid BO49. Regarding the HF
bands, I do not know the specific freqs but I do know we will be on
10,15,17,20
meter bands.
73,
Dale,KL7XJ
On 10/13/2011 4:23 PM, Dale Hershberger wrote:
> I know is very short notice. I have just put my gear together
> to operate portable from BO40 tomorrow afternoon and possibly
> Saturday afternoon as well. I will be in Homer, Alaska for the
> annual Refuges on the air event. We will be operating on the HFur satellite
> program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
Message: 15
Date: Thu, 13 Oct 2011 21:26:43 -0400
From: Charles Suprin <hamaa1vs@xxxxx.xxx>
To: g0mrf@xxx.xxx
Cc: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Tracking program performance post chicken
little date. (SatPC32 and GPredict)
Message-ID:
<CALyAeG9QBSR_ehzmY-mfODBO5FEw7+NrOnMnuqfKdTVaOCy-OA@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Gents,
Gpredict has simple formula based the tle for the decay date. That is
starting to appear elsewhere for visualization purposes. The negative
altitude is the result of running past where the data is valid.
Charles
On Oct 13, 2011 6:44 PM, <g0mrf@xxx.xxx> wrote:
>
> Hi Tom.
>
> Interesting question.
>
> I wonder if running a prediction program forward from a set of 'todays'
> keps will give a vaild answer for decay date?
>
> Looking at the keps, you have a number for decay rate. I reached the
> conclusion that this could be a major source of inaccuracy as presumably the
> value for decay rate will change as the satellite reduces altitude. It maybe
> the case that decay rate follows a curve which is not replicated by the
> program. Does anyone know if this is correct as it seems unlikely that
> software available to us e.g. Nova / GPredict will include algorithms for
> auto changing decay rate or for including other variables like sunspot
> cycle. I believe these variables are accounted for in more advanced software
> like AGI Satellite tool kit (STK)
>
> Thanks
>
> David G0MRF
>
>
>
>
>
> -----Original Message-----
> From: Thomas Doyle <tomdoyle1948@xxxxx.xxx>
> To: amsat-bb <amsat-bb@xxxxx.xxx>
> Sent: Thu, 13 Oct 2011 23:08
> Subject: [amsat-bb] Tracking program performance post chicken little date.
> (SatPC32 and GPredict)
>
>
> All the hype over the chicken little contest caused me to wonder how
> tracking programs will handle it.
>
> I was looked into the Cal Poly CP6 and HAWKSAT1 satellites. The TLE data
> is
> published on both Amsat and Celestrack lists. SatPC32 shows neither of the
> satellites as moving. An error is generated when trying to select either of
> them. I thought that perhaps they had decayed but had not been removed from
> the TLE lists.
>
> GPredict continues to track Az-El for CP6 in real time in the text display
> but shows the elevation and altitude as negative and the up/down direction
> as D (decayed) - it does not display CP6 on the map. I am assuming that CP6
> has decayed. The elevation for CP6 goes up and down and the tracking value
> change over time. Since the elevation is always negative perhaps GPredict
> is
> tracking what would have happened if the earth was just a tiny point of
> mass
> and the satellite is able to continue its downward descent. HAWKSAT1 shows
> up as above ground and running in GPredict.
>
> Since ARISSAT1 is probably going to decay fairly quickly I took a look at
> predicting ahead using the great Preview tracking in SatPC32 to see how
> decay is handled. After a couple of really bad years the coverage map for
> ARISSAT1 looks better than ever starting just two years from now in 2014.
> Unfortunately I could not figure out how to get GPredict to predict more
> than 14 days in the future and did not want to fool around changing the
> system clock.
>
> I have wondered what the NORAD routines would do after decay and how
> tracking programs that use the NORAD model would deal with it. Does the
> NORAD model continue to track as if the earth was just a very small very
> heavy point in space. A transparent 3D earth display would be very
> interesting to use to view the post chicken little results - someone must
> have one. Anyone know for sure ? HAWKSAT1 is still a bit of a mystery.
>
> 73 W9KE tom ...
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
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>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
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------------------------------
Message: 16
Date: Thu, 13 Oct 2011 21:17:28 -0500
From: Joe <nss@xxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Oscarlocator
Message-ID: <4E979BB8.9010600@xxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Or operating via the vintage way to compensate for doppler shift by
twisting the large knob!
Joe WB9SBD
The Original Rolling Ball Clock
Idle Tyme
Idle-Tyme.com
http://www.idle-tyme.com
On 10/13/2011 8:20 PM, Clayton Coleman W5PFG wrote:
> Seeing this kind of enthusiasm for "vintage" satellite gear might just
> inspire some enterprising individual to produce some brand new "OSCAR
> Locators."
>
> On Thu, Oct 13, 2011 at 6:49 PM, Kevin Deane<summit496@xxxx.xxx> wrote:
>> Anyone want to get rid of one I'll send you a SASE!
>>
>> Kevin
>> KF7MYK
>>
>>
>> _______________________________________________
>> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
>> Not an AMSAT-NA member? Join now to support the amateur satellite program!
>> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
>>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
_______________________________________________
Sent via amsat-bb@xxxxx.xxx. Opinions expressed are those of the author.
Not an AMSAT member? Join now to support the amateur satellite program!
http://amsat.org/mailman/listinfo/amsat-bb
End of AMSAT-BB Digest, Vol 6, Issue 568
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