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CX2SA > SATDIG 09.02.13 21:06l 249 Lines 8045 Bytes #999 (0) @ WW
BID : AMSATBB843
Read: GUEST
Subj: AMSAT-BB-digest V8 43
Path: IZ3LSV<F1OYP<F4DUR<CX2SA
Sent: 130209/2004Z @:CX2SA.SAL.URY.SA #:3248 [Salto] FBB7.00e $:AMSATBB843
From: CX2SA@CX2SA.SAL.URY.SA
To : SATDIG@WW
Today's Topics:
1. Re: Getting back into Satellites (i8cvs)
2. Re: protocol for using sats (Alan)
3. Re: Close encounters of the Asteroidal Kind (Tony Langdon)
4. Re: Close encounters of the Asteroidal Kind (Mike Lemons)
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Message: 1
Date: Fri, 8 Feb 2013 20:38:38 +0100
From: "i8cvs" <domenico.i8cvs@xxx.xx>
To: "Kevin Muenzler, WB5RUE" <kevin@xxxxxxxxxxxxxxxxxxxxx.xxx>, "Amsat
- BBs" <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: Getting back into Satellites
Message-ID: <000101ce0637$16afa1e0$0301a8c0@xxxxxx>
Content-Type: text/plain; charset="iso-8859-1"
Hi Kevin, WB5RUE.
My experience beginning from OSCAR-6 suggests that Full Duplex
is really required and not only an option because the first requirement
to succesfully access a satellite transponder is to hear your signal
coming back to your receiver.
If you are able to hear back your signal 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, WB5RUE" <kevin@xxxxxxxxxxxxxxxxxxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Sent: Thursday, February 07, 2013 9:33 PM
Subject: [amsat-bb] Re: Getting back into Satellites
> 73/all
>
> Is Full Duplex really required or just nice to have? Currently my setup
> (which doesn't include an antenna at the moment due to storms) is a Yaesu
> FT-790(uhf) and FT-290(vhf). Both do FM and SSB at about 25 watts. I've
> used to use my 290 for the old RS-12/13 and RS-15 birds along with my
FT-890
> (RIP) for the 10 meter downlink so I do have "full duplex" but is it a
> necessary feature? I know it's nice to be able to hear yourself to know
> that you are even getting into the machine.
>
> 73/
>
> Kevin Muenzler, WB5RUE
> Grid EL09uf
> Eagle Creek Observatory
> http://www.eaglecreekobservatory.org
> I have not yet begun to procrastinate!
>
>
>
> -----Original Message-----
> From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
> Behalf Of Andrew Glasbrenner
> Sent: Thursday, February 07, 2013 11:04 AM
> To: jeffrey.embry@xxxxx.xxx
> Cc: amsat-bb@xxxxx.xxx
> Subject: [amsat-bb] Re: Getting back into Satellites
>
> There is only one currently operable FM satellite, and many of the sats
due
> to be launched this year are transponders or FM/DSB repeaters.
>
> My suggestion would be to find a Yaesu 817 to get a toe into transponders,
> and add -any- UHF receiver for full duplex FM. The little Baofeng UV3s are
> like $45 and have good receivers in them.
>
> 73, Drew KO4MA
>
> Sent from my iPhone
>
> On Feb 7, 2013, at 10:26 AM, Jeffrey Embry <jeffrey.embry@xxxxx.xxx>
wrote:
>
> > Good Day all,
> >
> > After a few years hiatis, I am contemplating getting back on the
> > birds. Because I currently live in an apartment, I plan on starting
> > the easy route using an arrow antenna. My question is, since I sold
> > my last HT about a decade ago, what is recommended for the current
> > models of HTs that have full-duplex capabilities?
> >
> > 73es,
> >
> > --
> > Jeff Embry, K3OQ
> > FM19nb
> > ARCI #11643, FPQRP #-696,
> > QRP-L # 67, NAQCC #25, ARS #1733
> > AMSAT LM-2263
> >
> > --
> > Success is the ability to go from one failure to another with no loss
> > of enthusiasm. - Sir Winston Churchill
> > _______________________________________________
> > 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: 2
Date: Fri, 8 Feb 2013 13:17:46 -0600
From: Alan <wa4sca@xxxxx.xxx>
To: "'Bill Booth'" <ve3nxk@xxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: protocol for using sats
Message-ID: <E40FE5F9F776434A958513A314692CFE@xxxxxx>
Content-Type: text/plain; charset="us-ascii"
Bill,
There is a recent article from the Journal which is not on the server which
might also be of interest. I will send you a copy.
73s,
Alan
WA4SCA
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Anthony Monteiro
Sent: Friday, February 08, 2013 12:21 PM
To: Bill Booth
Cc: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: protocol for using sats
Hi Bill,
Take a look at this, still the best info:
http://www.amsat.org/amsat/features/one_true_rule.html
You always receive USB but may need to Tx LSB
if the transponder is inverting.
73,
Tony AA2TX
----
On 2/8/2013 12:11 PM, Bill Booth wrote:
> Its been a while and I need to be refreshed. When using the sats linear
> transponders how does the transmit receive work.
>
> Does the transmit stay on frequency and tune the receiver for best
> receive, or does the receiver stay and transmit frequency changes for
> best receive. Or do both move if your rig supports a satellite mode.
>
> Also I am hearing what I believe is both USB and LSB on the birds. Is
> one sideband considered to be standard.
>
>
_______________________________________________
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: Sat, 09 Feb 2013 11:38:34 +1100
From: Tony Langdon <vk3jed@xxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Close encounters of the Asteroidal Kind
Message-ID: <51159A8A.7030801@xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
On 9/02/13 2:26 AM, Greg Dolkas wrote:
> Is the 435KW an EIRP number, or power into their feed. I was thinking the
> later. No?
If you read the link that was recently posted, their transmitter uses
2x250kW klystrons, so it'd be RF power. :)
--
73 de Tony VK3JED
http://vkradio.com
------------------------------
Message: 4
Date: Fri, 08 Feb 2013 16:47:38 -0800
From: Mike Lemons <motie@xxxxxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Close encounters of the Asteroidal Kind
Message-ID: <51159CAA.2060505@xxxxxxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
In case you are thinking of trying to observe the near miss, it will
occur at mid-day in North America, so no chance of observing it there.
Your best chance will be in Asia where it will be as bright as magnitude
8. The cut-off for a naked-eye object is magnitude 6, but under perfect
conditions, you can sometimes see a magnitude 8.
Ideally, you would use binoculars or a telescope, but finding something
that faint moving that fast will still be difficult.
There is a star chart at the link below, but due to the massive paralax
for something this close, you really need to use some software that
knows your latitude and longitude.
http://www.skyandtelescope.com/observing/highlights/Asteroid-DA14-to-Zip-Past-
Earth-189052161.html
------------------------------
_______________________________________________
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 8, Issue 43
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