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CX2SA > SATDIG 20.08.08 21:10l 258 Lines 8092 Bytes #999 (0) @ WW
BID : 27247_CX2SA
Read: GUEST
Subj: AMSAT-BB-digest V3 425
Path: IZ3LSV<IV3SCP<SR1BSZ<F4BWT<YO6PLB<CX2SA
Sent: 080820/1913Z @:CX2SA.LAV.URY.SA #:27247 [Minas] FBB7.00e $:27247_CX2SA
From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. Re: COMPASS-1 needs your help (Stephen Davis)
2. Re: LMR400 or 400UF? (MM)
3. re polarity control (woops!) (Angus)
4. Office Closed (Martha)
----------------------------------------------------------------------
Message: 1
Date: Wed, 20 Aug 2008 04:21:45 -0700 (PDT)
From: Stephen Davis <davism294(AT)yahoo.com>
Subject: [amsat-bb] Re: COMPASS-1 needs your help
To: Raul Romero CA3SOC <ce3soc(AT)gmail.com>
Cc: "Amsat-BB(AT)Amsat.Org" <amsat-bb(AT)amsat.org>
Message-ID: <511181.90101.qm(AT)web58307.mail.re3.yahoo.com>
Content-Type: text/plain; charset=iso-8859-1
COMPASS 1 can be found in the following categories: CubeSats
NORAD ID: 32787
Int'l Code: 2008-021E
Perigee: 621.3 km
Apogee: 642.5 km
Inclination: 98.0?
Period: 97.2 min
Launch date: April 28, 2008
Source: Germany (GER)
Comments:
This is a CubeSat satellite. Compass-One was designed and built by
students at Aachen University of Applied Sciences in Germany. The
satellite features a Morse code telemetry beacon at 437.275 MHz.
Compass-1 will also provide a packet radio data downlink, which will
include image data, at 437.405 MHz.
----- Original Message ----
From: Raul Romero CA3SOC <ce3soc(AT)gmail.com>
To: Alan Cresswell <alancresswell(AT)xtra.co.nz>
Cc: "Amsat-BB(AT)Amsat.Org" <amsat-bb(AT)amsat.org>
Sent: Tuesday, August 19, 2008 10:22:32 PM
Subject: [amsat-bb] Re: COMPASS-1 needs your help
435.250 is beacon ???
73
Raul
CA3SOC
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----- Original Message -----
From: "Alan Cresswell" <alancresswell(AT)xtra.co.nz>
To: <amsat-bb(AT)amsat.org>
Sent: Tuesday, August 19, 2008 7:33 PM
Subject: [amsat-bb] Re: COMPASS-1 needs your help
Hi Mike,
All commands sent at 2202 UT. All accepted. No immediate response from
beacon but beacon came on just before LOS and managed to capture a full
frame. Data decoded OK as follows:
19.08.2008 22:18UTC FF140000180100200000900005
---------------------------------------------------
Solar Cell Voltage 5.00 V
Solar Panel 6 Cur 125.49 mA
Solar Panel 2 Cur 6.27 mA
Solar Panel 3 Cur 150.59 mA
Solar Panel 4 Cur 0.00 mA
Solar Panel 5 Cur 0.00 mA
EPS Reset Counter 0
Power Level Critical Battery Capacity
Heater Active Battery Heater OFF
Power Safe Counter 0
Emergency Mode Counter 0
Battery Voltage 2.82 V
Battery Current 0.00 mA
Battery Temperature 5 ?C
Resent the heater off command just before LOS and accepted OK at 22:10:30.
Alan
ZL2BX
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_______________________________________________
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------------------------------
Message: 2
Date: Wed, 20 Aug 2008 07:49:09 -0700 (PDT)
From: MM <ka1rrw(AT)yahoo.com>
Subject: [amsat-bb] Re: LMR400 or 400UF?
To: AMSAT BB <amsat-bb(AT)amsat.org>, Sebastian <w4as(AT)bellsouth.net>
Message-ID: <655652.76246.qm(AT)web56408.mail.re3.yahoo.com>
Content-Type: text/plain; charset=us-ascii
If you need to go around a Rotor, then use UF.
If No roto then the regular LMR 400 is ok.
I usually order my cables pre-cut with connectors installed.
Miles
--- On Mon, 8/18/08, Sebastian <w4as(AT)bellsouth.net> wrote:
> From: Sebastian <w4as(AT)bellsouth.net>
> Subject: [amsat-bb] Re: LMR400 or 400UF?
> To: "AMSAT BB" <amsat-bb(AT)amsat.org>
> Date: Monday, August 18, 2008, 8:36 PM
> I have no affiliation with this company, but I was very
> surprised by
> their prices, and very happy with their coax:
> http://www.jefatech.com/product/ll400
>
> Even if you do go with the 'real' LMR400, I think
> you'll have better
> luck than with RG8U.
>
> 73 de W4AS
> Sebastian
>
> On Aug 18, 2008, at 7:05 PM, Michael Tondee wrote:
>
> > I need to rework my 70cm antenna system and was
> thinking about going
> > with LMR 400. I have about a 40 foot run. Is there any
> real
> > advantage to using the ultra flex for the entire run
> or can I get by
> > with a short section of the UF between the preamp and
> antenna to
> > accomodate the rotor turning? How about just using a
> short section
> > of RG8U there instead of the LMR400UF? I'm trying
> to do this on a
> > budget.
> > Tnx and 73,
> > Michael, W4HIJ
> > _______________________________________________
> > Sent via AMSAT-BB(AT)amsat.org. Opinions expressed are
> those of the
> > author.
> > Not an AMSAT-NA member? Join now to support the
> amateur satellite
> > program!
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> http://amsat.org/mailman/listinfo/amsat-bb
>
> _______________________________________________
> Sent via AMSAT-BB(AT)amsat.org. Opinions expressed are those
> of the author.
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> satellite program!
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------------------------------
Message: 3
Date: Wed, 20 Aug 2008 17:32:04 +0100
From: "Angus" <angus(AT)young5769.freeserve.co.uk>
Subject: [amsat-bb] re polarity control (woops!)
To: <amsat-bb(AT)amsat.org>
Message-ID: <5DDE49A2335E4208B118E750615D66F2(AT)GusPC>
Content-Type: text/plain; charset="iso-8859-1"
Hi,
think I finally found out why there was not as great a difference on the LHCP
compared to RHCP or so I thought and yes it was operator error (you guys
already knew that I think hi).
Problem was I was using NOAA satellites as my signal source for a RHCP and
when I switched to LHCP could still hear them well.
Truth of the matter is the signal here on RHCP is massive around 59+40db on a
normal pass, when I switched to LHCP the signal was still BIG (59).
So the truth of the matter is, there is a huge difference to my RHCP and LHCP
but I should not have used such a large signal as a reference source.
I realized what might be the error and checked it by sending my 14 year old
son Cameron (2E0BAU) out on a 10 mile bicycle ride with a Yaseu VX2r handheld
and a small yagi (similar to arrow). having got to a nice high spot, he
pointed the yagi in my direction, he then spun the yagi slowly in a RHCP
everything was fine (around 0.1watt output from VX2r) but when he spun the
yagi in the wrong sense he was a very poor signal.
So now I have got that sorted, I am happy but sadly Cameron is not, very heavy
downpour on his way back home on the bicycle, got very wet!
Still its all in the name of science!
regards
Gus M0IKB
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------------------------------
Message: 4
Date: Wed, 20 Aug 2008 13:17:30 -0400
From: Martha <martha(AT)amsat.org>
Subject: [amsat-bb] Office Closed
To: amsat-bb(AT)amsat.org, "Board of Directors" <bod(AT)amsat.org>,
senior-officers <senior-officers(AT)amsat.org>
Message-ID:
<956751cf0808201017h863e8bbjaa2c78ffb2704b37(AT)mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1
The AMSAT office will be closed from Monday, August 25th through Tuesday
September 2nd. I am going on vacation!!!
--
73- Martha
------------------------------
_______________________________________________
Sent via amsat-bb(AT)amsat.org. Opinions expressed are those of the author.
Not an AMSAT member? Join now to support the amateur satellite program!
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End of AMSAT-BB Digest, Vol 3, Issue 425
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