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CX2SA > SATDIG 05.01.14 21:02l 339 Lines 12436 Bytes #999 (0) @ WW
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Sent: 140105/2002Z @:CX2SA.SAL.URY.SA #:2319 [Salto] FBB7.00e $:AMSATBB95
From: CX2SA@CX2SA.SAL.URY.SA
To : SATDIG@WW
Today's Topics:
1. Re: WEATHER EFFECT ON SATELLITE SIGNALS (Greg D)
2. Almost There (Joel Black)
3. Re: Almost There (Jim Jerzycke)
4. Re: Cape-2 (Nick Pugh K5QXJ)
5. 2M1EUB/P QRV IO87NC grid SCOTLAND (paul robinson)
6. 19.23z CQ USA AO7/B 145.950 (paul robinson)
7. CAPE-2 orbit #711 (Roland Zurmely)
----------------------------------------------------------------------
Message: 1
Date: Sat, 04 Jan 2014 13:11:30 -0800
From: Greg D <ko6th.greg@xxxxx.xxx>
To: Peter Wilson <protest@xxxxxxxxxxx.xxx>, amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: WEATHER EFFECT ON SATELLITE SIGNALS
Message-ID: <52C87902.60905@xxxxx.xxx>
Content-Type: text/plain; charset=us-ascii; format=flowed
Hi Peter,
Congrats on working all the satellites - a very dedicated effort!
Weather shouldn't be much of a factor for VHF and UHF communication;
it's not until you get into the microwaves that I have had trouble, and
even with the AO-40 (RIP) 2.4 ghz downlink it wasn't too noticeable.
Foliage is also a factor there, and somewhat for UHF; were you aiming
through any big trees?
Most of the variation from one pass to another comes from the somewhat
random orientation of the satellite's antennas compared to where the
planet is, and the polarization of both station's antennas. Do you have
linear or circularly polarized antennas?
Greg KO6TH
Peter Wilson wrote:
> Hi everyone,
>
>
>
> Firstly, thank you to the many people who have helped me over the last few
> days with getting started on the sats, you have all been very helpful.
>
> I have now worked all the current satellites, including AO-07 and managed to
> get the doppler shift sorted out with Satpc32.
>
>
>
> However, today I had a problem hearing both FO-29 and AO-52 - both were good
> passes. We had some very bad weather here in the UK so I was
>
> wondering if the cloud cover can affect the up/downlink.
>
>
>
> Peter
>
> G8KEK
>
> _______________________________________________
> 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: Sat, 04 Jan 2014 18:42:58 -0600
From: Joel Black <w4jbb@xxxxxxx.xxx>
To: Amsat BB <AMSAT-BB@xxxxx.xxx>
Subject: [amsat-bb] Almost There
Message-ID: <52C8AA92.7050208@xxxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
After a rocky start to my Christmas Vacation (I fell off a ladder while
pruning limbs from a tree - nothing broken, just banged up and bruised),
I almost have my satellite station back on the air.
After doing some selling and horse-trading, I am back in possession of
my FT-847 that I sold to my dad.
After cleaning out my storage building, I found a couple of fairly long
runs of LMR400UF. I need to measure them, but I think it is more than
enough to get me outside and up the mast.
I also have a U-100 control box thanks to someone on the list.
I operate an iMac with Mac OS X 10.9.1 so, for now, I am using SatPC32
on my virtual machine. I have played around with MacDopplerPro, but it
locks up on my computer continuously. I don't know if it has something
to do with the USB-to-serial converter (I *do* have a null modem cable
between the USB-to-serial converter and the FT-847), or if MDP is just
limited in the unregistered version. The USB adapter works fine with my K3.
Let me ask a question about the Arrow Antenna. Someone mentioned Elk
Antennas and, while I'm sure it's a fine product, I am already in
possession of the Arrow. I've done a lot of reading and without getting
into the arguments about Arrow vs. Elk and length of elements, etc.,
element isolation, and published vs. unpublished gain amounts let me
tell you what I'm thinking:
First, I'm going to eliminate the diplexer. I will not need it for one
thing. For another, it's limited to 10 W max input. From what I have
read, my gain will be increased quite a bit. I don't remember the exact
amount, but it's quite dramatic.
Second, the feed on the Arrow is a gamma match. From my reading, and I'm
no engineer, for a gamma match to work properly the element(s) (at least
the driven element) needs to be grounded. That's fine and, again, I
don't want to get into the "why's" I just want to make sure I'm correct.
Therefore, my question is:
Is there any reason I cannot turn the driven element 90 degrees to allow
for a better connection to the BNC connector? Maybe not even 90 degrees,
but enough to get to the BNC connector without the male connector on the
cable touching the boom. I want to weatherproof those connections. What
I'd like to do after I turn the gamma match is feed it with a very short
length of LMR240 and then into a preamp. After the preamp, I'll have the
LMR400UF to run to the FT-847. Most gamma matches I see on commercial
antennas are on the side of the antenna - if horizontal, they're below
(or above) the boom; if vertical, it's off to one side. The Arrow is the
only antenna I've seen with a gamma match on which the gamma match is
not to one side or the other of the boom. I hope I'm making sense.
Anyway, I wanted to let those folks who helped out know that I
appreciate it and that I'm much closer to being back on the birds than I
was a few weeks ago.
73,
Joel - W4JBB
------------------------------
Message: 3
Date: Sun, 05 Jan 2014 01:55:11 +0000
From: Jim Jerzycke <kq6ea@xxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Almost There
Message-ID: <52C8BB7F.3050605@xxxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Getting rid of the diplexer will reduce the loss, but not improve the
gain. The gain is dependent on the design of the antenna.
73, Jim KQ6EA
Adding a preamp at the antenna is always a good idea for satellite use.
On 01/05/2014 12:42 AM, Joel Black wrote:
> After a rocky start to my Christmas Vacation (I fell off a ladder
> while pruning limbs from a tree - nothing broken, just banged up and
> bruised), I almost have my satellite station back on the air.
>
> After doing some selling and horse-trading, I am back in possession of
> my FT-847 that I sold to my dad.
>
> After cleaning out my storage building, I found a couple of fairly
> long runs of LMR400UF. I need to measure them, but I think it is more
> than enough to get me outside and up the mast.
>
> I also have a U-100 control box thanks to someone on the list.
>
> I operate an iMac with Mac OS X 10.9.1 so, for now, I am using SatPC32
> on my virtual machine. I have played around with MacDopplerPro, but it
> locks up on my computer continuously. I don't know if it has something
> to do with the USB-to-serial converter (I *do* have a null modem cable
> between the USB-to-serial converter and the FT-847), or if MDP is just
> limited in the unregistered version. The USB adapter works fine with
> my K3.
>
> Let me ask a question about the Arrow Antenna. Someone mentioned Elk
> Antennas and, while I'm sure it's a fine product, I am already in
> possession of the Arrow. I've done a lot of reading and without
> getting into the arguments about Arrow vs. Elk and length of elements,
> etc., element isolation, and published vs. unpublished gain amounts
> let me tell you what I'm thinking:
>
> First, I'm going to eliminate the diplexer. I will not need it for one
> thing. For another, it's limited to 10 W max input. From what I have
> read, my gain will be increased quite a bit. I don't remember the
> exact amount, but it's quite dramatic.
>
> Second, the feed on the Arrow is a gamma match. From my reading, and
> I'm no engineer, for a gamma match to work properly the element(s) (at
> least the driven element) needs to be grounded. That's fine and,
> again, I don't want to get into the "why's" I just want to make sure
> I'm correct. Therefore, my question is:
>
> Is there any reason I cannot turn the driven element 90 degrees to
> allow for a better connection to the BNC connector? Maybe not even 90
> degrees, but enough to get to the BNC connector without the male
> connector on the cable touching the boom. I want to weatherproof those
> connections. What I'd like to do after I turn the gamma match is feed
> it with a very short length of LMR240 and then into a preamp. After
> the preamp, I'll have the LMR400UF to run to the FT-847. Most gamma
> matches I see on commercial antennas are on the side of the antenna -
> if horizontal, they're below (or above) the boom; if vertical, it's
> off to one side. The Arrow is the only antenna I've seen with a gamma
> match on which the gamma match is not to one side or the other of the
> boom. I hope I'm making sense.
>
> Anyway, I wanted to let those folks who helped out know that I
> appreciate it and that I'm much closer to being back on the birds than
> I was a few weeks ago.
>
> 73,
> Joel - W4JBB
> _______________________________________________
> 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: Sun, 5 Jan 2014 03:55:59 -0600
From: "Nick Pugh K5QXJ" <quadpugh@xxxxxxxxx.xxx>
To: "'Roland Zurmely'" <py4zbz@xxxxx.xxx>, "'AMSAT'"
<amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: Cape-2
Message-ID: <00df01cf09fc$56b70fc0$04252f40$@xxx>
Content-Type: text/plain; charset="us-ascii"
TNX Roland
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Roland Zurmely
Sent: Saturday, January 04, 2014 12:31 PM
To: AMSAT
Subject: [amsat-bb] Cape-2
CW beacon orbit #696 at 18:05 UTC:
W5UL CAPE2 OR V5096
73 de Roland PY4ZBZ
_______________________________________________
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: Sun, 5 Jan 2014 12:47:30 +0000 (GMT)
From: paul robinson <pushbiker2004@xxxxx.xx.xx>
To: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] 2M1EUB/P QRV IO87NC grid SCOTLAND
Message-ID:
<1388926050.33506.YahooMailNeo@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=utf-8
Snow and high winds but now abt on the birds ,high mountains in the way but
able to be qrv on some passes...ill be abt all week de paul 2E1EUB/2M1EUB/P
------------------------------
Message: 6
Date: Sun, 5 Jan 2014 15:05:05 +0000 (GMT)
From: paul robinson <pushbiker2004@xxxxx.xx.xx>
To: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] 19.23z CQ USA AO7/B 145.950
Message-ID:
<1388934305.11634.YahooMailNeo@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
Looking state side 19.23 small window via the mountain dips...from io87nc NE
Scotland ...145.950 AO7 /B? and fo29 passes de paul 2M1EUB/P
Location Ordie Aberdeenshire Scotlaand.
------------------------------
Message: 7
Date: Sun, 5 Jan 2014 10:18:53 -0800 (PST)
From: Roland Zurmely <py4zbz@xxxxx.xxx>
To: AMSAT <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] CAPE-2 orbit #711
Message-ID:
<1388945933.63108.YahooMailNeo@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
CAPE-2 orbit #711 over GH70un ?Sete Lagoas ?Brasil
Received CW beacon: W5UL CAPE2 OR V5178 ?@ 17:37 UTC
Sent command Green mode
Received CW beacon: W5UL CAPE2 GN V5129 ?@ 17:38 UTC
Sent command Force beacon @xxxxx UTC
Received AX25 beacon:
1:Fm W5UL-15 To W5UL <UI F/C Pid=F0 Len=68> [15:53:29R]
+W5UL,CAPE-2,5,GR,201301281923CST,5086mV,010-1,5,26C,13C,ulcape.org#
Sent command Get Health beacon @xxxxx UTC
Received AX25 beacon:
1:Fm W5UL-15 To W5UL <UI F/C Pid=F0 Len=59> [15:53:34R]
W5UL,5224,825,5204,-1,5200,51,5200,GR,001,25,13,ulcape.org#
Please see picture here:
http://www.qsl.net/py4zbz/cape.htm#i
73 de Roland PY4ZBZ
------------------------------
_______________________________________________
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 9, Issue 5
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