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CX2SA > SATDIG 20.04.13 21:02l 305 Lines 10435 Bytes #999 (0) @ WW
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Subj: AMSAT-BB-digest V8 123
Path: IZ3LSV<IK2XDE<ON4HU<CX2SA
Sent: 130420/1902Z @:CX2SA.SAL.URY.SA #:5412 [Salto] FBB7.00e $:AMSATBB8123
From: CX2SA@CX2SA.SAL.URY.SA
To : SATDIG@WW
Today's Topics:
1. Bringing the F-1 engine back to life (W4ART Arthur Feller)
2. OSSI-1 Deployed Friday (M5AKA)
3. G-5500 and ST-3 interface for sale (John / NS1Z)
4. Re: OSSI-1 Deployed Friday (Mike Rupprecht)
5. Re: OSSI-1 Deployed Friday (Nico Janssen)
6. Re: Bringing the F-1 engine back to life (Rick Tejera)
7. Re: Mount an Arrow on rotator with 2m verticalorhorizontal
(Art McBride)
----------------------------------------------------------------------
Message: 1
Date: Fri, 19 Apr 2013 15:55:53 -0400
From: W4ART Arthur Feller <afeller@xxxx.xxx>
To: "<Amsat-bb@xxxxx.xxx> BB" <amsat-bb@xxxxx.xxx>
Cc: Samuel Feller <sam@xxxxxxxxxxxxxxx.xxx>
Subject: [amsat-bb] Bringing the F-1 engine back to life
Message-ID: <E79C3E2F-055D-4CA8-917E-A704721C7E9A@xxxx.xxx>
Content-Type: text/plain; charset=us-ascii
http://arstechnica.com/science/2013/04/how-nasa-brought-the-monstrous-f-1-moon
-rocket-back-to-life/
------------------------------
Message: 2
Date: Sat, 20 Apr 2013 09:22:31 +0100 (BST)
From: M5AKA <m5aka@xxxxx.xx.xx>
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] OSSI-1 Deployed Friday
Message-ID:
<1366446151.24984.YahooMailMobile@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=utf-8
OSSI-1 deployed yesterday evening. Anyone seen any keeps yet ?
Trevor M5AKA
------------------------------
Message: 3
Date: Sat, 20 Apr 2013 07:12:09 -0400
From: "John / NS1Z" <ns1zjohn@xxxxx.xxx>
To: "amsat-bb" <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] G-5500 and ST-3 interface for sale
Message-ID: <D1563E21E37E4A48B591158D57571724@xxxxxx>
Content-Type: text/plain; charset="iso-8859-1"
Just a quick note: My G-5500 Yaesu rotor and ST-3 interface are for sale.
Very good condition and working perfectly. If you live close to 34488
(Ocala/Silver Springs FL) I have
the fiberglas cross boom I will include at no charge. Asking $650 for all.
------------------------------
Message: 4
Date: Sat, 20 Apr 2013 14:41:00 +0200
From: "Mike Rupprecht" <mail@xxxxxxxxxxxxxx.xx>
To: "'M5AKA'" <m5aka@xxxxx.xx.xx>, "'AMSAT BB'" <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: OSSI-1 Deployed Friday
Message-ID: <019401ce3dc4$500c70c0$f0255240$@xx>
Content-Type: text/plain; charset="iso-8859-1"
BION ??
1 39130U 13015A 13109.86774677 -.00001982 62674-5 00000+0 0 38
2 39130 064.8855 032.0365 0223088 061.7172 336.4641 15.54458396 63
OSSI??
1 39137U 13015H 13109.61683023 .00218796 18651-4 10338-2 0 37
2 39137 064.9052 032.9523 0221255 060.5813 013.8697 15.55037421 35
Just 1 minute apart.
73 Mike
DK3WN
-----Urspr?ngliche Nachricht-----
Von: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx Im
Auftrag von M5AKA
Gesendet: Samstag, 20. April 2013 10:23
An: AMSAT BB
Betreff: [amsat-bb] OSSI-1 Deployed Friday
OSSI-1 deployed yesterday evening. Anyone seen any keeps yet ?
Trevor M5AKA
_______________________________________________
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: 5
Date: Sat, 20 Apr 2013 15:29:36 +0200
From: Nico Janssen <hamsat@xxxxxx.xx>
To: Mike Rupprecht <mail@xxxxxxxxxxxxxx.xx>, "'AMSAT BB'"
<amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: OSSI-1 Deployed Friday
Message-ID: <51729840.90908@xxxxxx.xx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Bion M1 is 39130, 2013-015A.
The upper stage of the Soyuz 2 rocket is 39137, 2013-015H.
OSSI 1 is probably 39131, 2013-015B. No element set has been
provided yet for this satellite. It was separated from BION M1
at 16:13:50 UTC on April 19.
The ID numbers 39132 to 39136 have been reserved for the other
satellites on this launch. But these satellites are still
attached to BION M1. They are expected to be separated from
BION M1 in two batches on Sunday starting at 08:15 (AIST and
Dove 2) and starting at 11:00 UTC (BEESAT 3, BEESAT 2 and SOMP).
73,
Nico PA0DLO
On 2013-04-20 14:41, Mike Rupprecht wrote:
> BION ??
> 1 39130U 13015A 13109.86774677 -.00001982 62674-5 00000+0 0 38
> 2 39130 064.8855 032.0365 0223088 061.7172 336.4641 15.54458396 63
>
> OSSI??
> 1 39137U 13015H 13109.61683023 .00218796 18651-4 10338-2 0 37
> 2 39137 064.9052 032.9523 0221255 060.5813 013.8697 15.55037421 35
>
> Just 1 minute apart.
>
> 73 Mike
> DK3WN
>
> -----Urspr?ngliche Nachricht-----
> Von: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx Im
> Auftrag von M5AKA
> Gesendet: Samstag, 20. April 2013 10:23
> An: AMSAT BB
> Betreff: [amsat-bb] OSSI-1 Deployed Friday
>
> OSSI-1 deployed yesterday evening. Anyone seen any keeps yet ?
>
> Trevor M5AKA
> _______________________________________________
> 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: 6
Date: Sat, 20 Apr 2013 08:44:46 -0700
From: "Rick Tejera" <saguaroastro@xxx.xxx>
To: "'W4ART Arthur Feller'" <afeller@xxxx.xxx>, "'<Amsat-bb@xxxxx.xxx>
BB'" <amsat-bb@xxxxx.xxx>
Cc: 'Samuel Feller' <sam@xxxxxxxxxxxxxxx.xxx>
Subject: [amsat-bb] Re: Bringing the F-1 engine back to life
Message-ID: <001201ce3ddd$fc8b08c0$f5a11a40$@xxx>
Content-Type: text/plain; charset="US-ASCII"
To this Apollophile this is fascinating stuff, thanks for sharing.
Rick Tejera (K7TEJ)
Sagauro Astronomy Club
www.saguaroastro.org
Thunderbird Amatuer Radio Club
www.w7tbc.org
30 Meter Digital Group # 5794
Feld Hell Club #3994
OMISS #8629
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of W4ART Arthur Feller
Sent: Friday, 19 April, 2013 12:56
To: <Amsat-bb@xxxxx.xxx> BB
Cc: Samuel Feller
Subject: [amsat-bb] Bringing the F-1 engine back to life
http://arstechnica.com/science/2013/04/how-nasa-brought-the-monstrous-f-1-mo
on-rocket-back-to-life/
_______________________________________________
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: 7
Date: Sat, 20 Apr 2013 10:47:10 -0700
From: "Art McBride" <kc6uqh@xxx.xxx>
To: "'i8cvs'" <domenico.i8cvs@xxx.xx>, "'Douglas Phelps'"
<dphelps1@xxxxxxxxx.xxx>, "'R.T.Liddy'" <k8bl@xxxxxxxxx.xxx>, "'Amsat
- BBs'" <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: Mount an Arrow on rotator with 2m
verticalorhorizontal
Message-ID: <5F11C934FD1B4ABF8031D919C0923C17@xxxxxx>
Content-Type: text/plain; charset="us-ascii"
Domenico,
There are two solutions to use coax to combine two 50 Ohm antennas. 70.7 Ohm
cable (50 to 100) [Two 50 ohm antennas transformed by two lines to 100 Ohms
each, in parallel = 50 Ohms] and your suggestion using 35.4 Ohm cable
section (25 to 50) = [Two 50 ohm antennas connected in parallel = 25 Ohms,
transformed to 50 Ohms]
The interesting part is you do not save anything when using 75 Ohm coax as
1/4 wave sections (two in parallel =37.5 Ohms) VS two separate 75 ohm
sections one to each antenna.
Art, KC6UQH
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of i8cvs
Sent: Wednesday, April 17, 2013 5:00 AM
To: Douglas Phelps; R.T.Liddy; Amsat - BBs
Subject: [amsat-bb] Re: Mount an Arrow on rotator with 2m
verticalorhorizontal
Hi Douglas,
Using two identical 50 ohm coax lenght you can't transform each 50 ohm
antenna impedance into 100 ohm but if you connect both 50 ohm coax cables
to a T connector than the resulting impedance at the common output of the T
connector will be 25 ohm i.e. two 50 ohm impedances in parallel and your
radio will see a VSWR of 50/25 = 2 and this is the reason it will not work !
BTW if you connect the above 25 ohm impedance to the input of a 1/4
electrical wavelenght long coax cable of 36 ohm impedance than at the output
of it you will get an impedance of 36^2 / 25 = 52 ohm toward the main feed
line with a good VSWR of about 1 in TX and RX
To build a 1/4 electrical wavelengt long of a transmission line of 36 ohm
impedance you can connect in parallel two 1/4 electrical wavelenght of
75 ohm coax cable like RG-59 or RG-11 i.e. 34,13 centimeters or 13,38
inches long for 145 MHz
BTW in this situation if both antennas are mounted in parallel one Vertical
and the other one Horizontal and if the elements are mounted on the same
plain with respect to the space than the resulting polarization of the
radiated field can be at 45 degrees like \ or at 135 degrees like /
depending at wich side of the dipoles the inner conductors of the 50 ohm
feed lines are connected.
73" de
i8CVS Domenico
----- Original Message -----
From: "Douglas Phelps" <dphelps1@xxxxxxxxx.xxx>
To: "R.T.Liddy" <k8bl@xxxxxxxxx.xxx>; <amsat-bb@xxxxx.xxx>
Sent: Tuesday, April 16, 2013 8:31 PM
Subject: [amsat-bb] Re: Mount an Arrow on rotator with 2m vertical
orhorizontal
> Any reason why, using identical coax lengths, you could not transform the
> impedance to 100 ohms and then use a T connector to sum both antenna
> signals and achieve 50 ohms to the radio? I know Transmit power will be
> 3 dB down at either antenna but is there any reason it will not work?
> Any antenna gurus out there?
>
_______________________________________________
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 8, Issue 123
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