Hi,
I think it takes about 2500m/s delta V to get from from LEO to a GTO.
How feasible is it to use some type of an electric thruster (high
specific impulse but low net thrust - eg a hall effect thruster or
similar device) to slowly crawl up to GTO from LEO?
I imagine that such a bird would
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including reports on the activities of a worldwide group of Amateur
I think it takes about 2500m/s delta V to get from from LEO to a GTO.
How feasible is it to use some type of an electric thruster (high
specific impulse but low net thrust - eg a hall effect thruster or
similar device) to slowly crawl up to GTO from LEO?
Hi Ross,
Very feasible, there are
Hello,
I am having trouble to understand how Orbitron and WispDDE works to get
right Flipped passes of ISS over my QTH.
Some times when ISS come from South América and cross over Europe my rotor
need to work flipped, because my stop is North.
Some times he do, sometimes not, then after cross
Worked Rolf last night on FO-29 operating portable from EN17. Nice
signal from the mobile set-up! Thanks Rolf for a new grid for me. I'll
be uploading the log to LoTW tonight, and putting a card in the mail
soon too.
If you need EN17, you won't do better than trying for this first class
No signal on a website which carried its audio stream:
http://www.spaceweatherradio.com/
According to:
http://www.spaceweather.com/
it went silent on UTC 2013-09-01.
73s
Bernhard VA6BMJ @ DO33FL
___
Sent via AMSAT-BB@amsat.org. Opinions
I'm looking to put together a quick an easy portable tracking system for
LEO birds maybe something for field day use or an ISS school contact
Basically looking to do polar tracking with one rotor and a manual set
declination angle
Thoughts are:
- rotor that can swing 180 degrees
Hi all,
As I reported on the 20m Amsat Net (14.282mhz Sundays 18:00z - 19:00z)
this morning, I noticed that my 2m antenna was listing slightly
down-hill. Suspecting that the boom attachment screws had come loose,
my project for the day was to go up on the roof and align and tighten them.
Rob,
See my article in the April/May issue of the AMSAT Journal. While not
motorized, I'm sure it can be easily adapted to be motorized.
The basis is a simple Equatorial telescope mount.
If you need a copy let me know.
Rick Tejera (K7TEJ)
Saguaro Astronomy Club
www.saguaroastro.org
Today and quite a bit lately it seems So50 is becoming out of control. A few
thing to consider when working So50 and the other birds.
1. Don't transmit if can't hear. Really so50 should sound like your local
repeater its its not then you need a better rx antenna or maybe a preamp.
2. If you
Well said Wyatt. SO-50 sounds more like the Wild West the last few months.
Unfortunately, the people that need to read this probably do not subscribe to
the list.
I do not consider myself a perfect operator but I try to be.
ARRL should address this matter in QST. I seem to remember someone
Wyatt,
All good points! I just hope I was not one that was causing QRM on SO50.
I just recently have my IC910H working with both rotor control and
CAT for the radio for Doppler control. I have noticed that at
times the uplink freq can be off. I am working on getting it tweaked in.
I have
Very interesting, Greg.I was concerned about my vhf/uhf beams I want
to put
up before winter. I used the red plastic tops of Boost Protein drink
bottles and
they fit nice over the ends.
I broke a few of them but was able to cover all of the booms well.
I had the squirrel problem at the
A 12 gauge full choke shotgun ?
73 Jeff kb2m
-Original Message-
From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On
Behalf Of Greg D
Sent: Sunday, September 1, 2013 6:52 PM
To: Amsat BB
Subject: [amsat-bb] Winterization project
Hi all,
As I reported on
There used to be a company that sold hot pepper stuff in a caulking tube
that you could put where birds would roost.
The birds would land, get a hot foot, and leave.
Might be worth googling a bit to see if it's still available.
Unless, of course, your squirrels enjoy spicy food!
73, Jim
In my situation I have a Dalmatian/Pointer who hates squirrels, or he thinks
they're lunch. Either way my squirrel situation is solved. A very effective
deterrent.
good luck
73 Bob W7LRD
- Original Message -
From: Greg D ko6th.g...@gmail.com
To: Amsat BB AMSAT-BB@amsat.org
Sent:
I was thinking Aguila Super Colibris, 20 grains of .22LR low noise,
anti-squirrel CIWS.
73, Drew KO4MA
-Original Message-
From: Jeff Griffin k...@comcast.net
Sent: Sep 1, 2013 8:41 PM
To: AMSAT-BB@amsat.org
Subject: [amsat-bb] Re: Winterization project
A 12 gauge full choke shotgun ?
A KW linear??
Jeff Moore -- KE7ACY
CN94
On Sun, Sep 1, 2013 at 3:51 PM, Greg D ko6th.g...@gmail.com wrote:
Any suggestions on an effective squirrel deterrent?
Greg KO6TH
___
Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the
Greg, et al...
You think you have acorn problems? Check THIS out:
http://www.youtube.com/watch?v=cZkAP-CQlhA
73, Bob K8BL
(AMSAT Mbr since 1979)
From: Greg D ko6th.g...@gmail.com
To: Amsat BB AMSAT-BB@amsat.org
Sent: Sunday, September 1, 2013
almost all .22lr are unavailable, they're still hoarding them.
73 Bob W7LRD
- Original Message -
From: Andrew Glasbrenner glasbren...@mindspring.com
To: Jeff Griffin k...@comcast.net, AMSAT-BB@amsat.org
Sent: Sunday, September 1, 2013 6:41:06 PM
Subject: [amsat-bb] Re: Winterization
Not really active right now so I haven't heard what's going on with
SO-50 but I can well imagine. I would guess the main problem is what it
most often always is on the FM birds. A lot of hams like to try and
sell sat ops by telling folks that all they need is a dual band
handheld and an
Who is they??
On 09/02/2013 02:47 AM, Bob- W7LRD wrote:
almost all .22lr are unavailable, they're still hoarding them.
73 Bob W7LRD
- Original Message -
From: Andrew Glasbrenner glasbren...@mindspring.com
To: Jeff Griffin k...@comcast.net, AMSAT-BB@amsat.org
Sent: Sunday, September 1,
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