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CX2SA > SATDIG 31.12.10 21:07l 443 Lines 14331 Bytes #999 (0) @ WW
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Subj: AMSAT-BB-digest V5 517
Path: IZ3LSV<IK2XDE<ON4HU<CX2ACB<LU7DBL<CX2SA
Sent: 101231/2003Z @:CX2SA.LAV.URY.SA #:42527 [Minas] FBB7.00e $:AMSATBB5517
From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. Helped needed--AO-51 activity reports (Mark L. Hammond)
2. Mode change delay-AO-51 (Mark L. Hammond)
3. Re: Mode change delay-AO-51 (Mark L. Hammond)
4. Re: Is it possible to work LEO sats (FM or SSB) with antennas
in attic? (Mike Ryan)
5. Re: Let Your Garage Charge Your Radio (G0MRF@xxx.xxxx
6. UO-11 Active (GW1FKY@xxx.xxxx
7. LVB Tracker reset problem (Bill Photinos)
8. Re: Let Your Garage Charge Your Radio (Clint Bradford)
9. Re: Let Your Garage Charge Your Radio (Edward R. Cole)
10. Thank you ! (PA3GUO)
----------------------------------------------------------------------
Message: 1
Date: Thu, 30 Dec 2010 15:50:56 -0500
From: "Mark L. Hammond" <marklhammond@xxxxx.xxx>
Subject: [amsat-bb] Helped needed--AO-51 activity reports
To: amsat-bb@xxxxx.xxx
Message-ID: <pYr11f00156cfur05Yr2Xh@xxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
Hell All,
The command team could really use your help. If you work AO-51 (or hear it)
and there isn't a recent entry, please make a report entry here
http://oscar.dcarr.org/ so we know all is well.
Things are touch-and-go now that we are experiencing eclipses, and reports
on the OSCAR Status Page that the bird is up and functional are extremely
helpful.
We do expect the transmitter to go OFF during eclipse, but eclipses are only
a couple minutes or less at the moment.
Thanks for your help!
Mark L. Hammond [N8MH]
------------------------------
Message: 2
Date: Thu, 30 Dec 2010 20:05:42 -0500
From: "Mark L. Hammond" <marklhammond@xxxxx.xxx>
Subject: [amsat-bb] Mode change delay-AO-51
To: amsat-bb@xxxxx.xxx
Message-ID: <pd5o1f00256cfur05d5swp@xxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
Hi All,
Due to power management related issues, we skipped the mode change tonight
for SKN mode. The plan is for the change to occur around 10:00utc 30 Dec.
73,
Mark L. Hammond [N8MH]
------------------------------
Message: 3
Date: Thu, 30 Dec 2010 20:25:43 -0500
From: "Mark L. Hammond" <marklhammond@xxxxx.xxx>
Subject: [amsat-bb] Re: Mode change delay-AO-51
To: wa4ivm@xxxxx.xxxx amsat-bb@xxxxx.xxx
Message-ID: <pdRp1f00D56cfur05dRt4v@xxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
Yes Jim, that's what I meant :) Good catch.
That's around 5am local Eastern US time, tomorrow (Friday).
Hope that's more clear now..heh.
73,
Mark N8MH
At 08:23 PM 12/30/2010 -0500, Jim Wright wrote:
>Did you mean 31 Dec? 1000 UTC on 30 Dec is history!
>Curious,
>Jim
>
>
>On 12/30/2010 8:05 PM, Mark L. Hammond wrote:
>>Hi All,
>>
>>Due to power management related issues, we skipped the mode change tonight
for SKN mode. The plan is for the change to occur around 10:00utc 30 Dec.
>>
>>73,
>>
>>
>>
>>Mark L. Hammond [N8MH]
>>
>>_______________________________________________
>>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
>>
Mark L. Hammond [N8MH]
------------------------------
Message: 4
Date: Thu, 30 Dec 2010 22:05:26 -0500
From: "Mike Ryan" <mryan301@xxxxxxx.xxx>
Subject: [amsat-bb] Re: Is it possible to work LEO sats (FM or SSB)
with antennas in attic?
To: <amsat-bb@xxxxx.xxx>
Message-ID: <7325EC97C1314102A405BB85FB669927@xxxxxxxxx>
Content-Type: text/plain; charset="UTF-8"
The Arrow isn't set up for mast mounting by default. But under the rubber
handle (easily pulled off) is a threaded connector that mates with most
camera tripods. Many use that tripod mount on the Arrow (including me) to
manage fatigue and be lazy. You can rig up an L bracket with a trip to the
hardware store that uses those threads and gives you something to mount to a
mast. An L bracket connected to the Arrow on one end via the threaded screws
and connected to a small piece of pipe, mast , or electric conduit on the
other end through a couple ubolts.
This would never hold up to wind outside but just fine in the attic. In this
config 70cm is horizontal and 2M vertical but with a little creativity, you
can flip that.
Always having one band out of polarity is a characteristic of the Arrow.
It?s a little inconvenient signal wise, but of you run full duplex, it gives
you some isolation. The Elk, being a dual band log periodic, doesn?t have
this feature and both bands are same polarity. Elk or Arrow. Always a debate
in the group. Some swear by one and some by the the other.
Yes, keep that ARR amp at least until you get a chance to try it. It makes a
huge difference on the downlink. Better still if you have the ?S? or
switched model as its so very easy to accidentally pop your amp through a
careless bump of the PTT.
As for the U100, that?s just my choice as I?ve been happily using them for
years. Since the mast goes through the center, they also make a very easily
deployed elevation rotor. Some good pictures of how to do that on Norms
Rotor Service website. But you can use any inexpensive rotor like the Radio
Shack (similar units available from NTE, Philips, RCA, and HyGain) . I have
one of those too and its fine for light duty. Its just very clear by
listening to it run and peeking inside the housing at the tiny motor that it
wont hold up to punishment. The U100s may be ancient clunkers, but they are
pretty tough.
Good luck.
Mike WB1AAT
-----
Date: Wed, 29 Dec 2010 15:34:03 -0500
From: "Joe Krepps" <occupant@xxxxxxx.xxx>
Subject: [amsat-bb] Re: Is it possible to work LEO sats (FM or SSB)
with antennas in attic?
To: amsat-bb@xxxxx.xxx
Message-ID: <op.vohsq1oraadv7j@xxxxxxxxxxxxx.xxxxx>
Content-Type: text/plain; charset=iso-8859-15; format=flowed;
delsp=yes
Question: when mounting an Arrow to a TV rotator, are the 2m elements
vertical, horizontal or ...?
Guess I better hang onto my bought-from-eBay-but-never-used ARR 432MHz
preamp!
Tnx & 73,
Joe WB3CFN <-now on the hunt for a good ol' U100 (Ka-CHUNK Ka-CHUNK
Ka-CHUNK...)
------------------------------
Message: 5
Date: Fri, 31 Dec 2010 05:25:25 EST
From: G0MRF@xxx.xxx
Subject: [amsat-bb] Re: Let Your Garage Charge Your Radio
To: clintbradford@xxx.xxxx amsat-bb@xxxxx.xxx
Message-ID: <12bfa.5116cf67.3a4f0995@xxx.xxx>
Content-Type: text/plain; charset="US-ASCII"
Hi Clint.
Sounds like a unique solution. Probably OK for NiCd or Lead acid.
However, if it's any sort of Lithium technology in those batteries, then
deep cycling and a top up charge is definately the wrong way.
For maximum shelf life Lithium batteries need to be kept at 40 - 60%
charge, then topped up when needed. Also, for the maximum number of
cycles, the
battery needs a small depth of discharge not deep cycling.
Your friend is probably using NiCd bats, but I thought I would mention it
just in case anyone thought this would be a good idea for Lithium batteries.
Thanks es HNY
David
In a message dated 30/12/2010 19:20:52 GMT Standard Time,
clintbradford@xxx.xxx writes:
He also performs a "cycling" of his battery pack every 60 days (running
the radio until it won't power on, then charging).
After a year-and-a-half of this, his voltage indication is still quite
high. When he performs his "cycling," the pack seems to not have lost a bit
of
capacity.
------------------------------
Message: 6
Date: Fri, 31 Dec 2010 05:34:03 EST
From: GW1FKY@xxx.xxx
Subject: [amsat-bb] UO-11 Active
To: amsat-bb@xxxxx.xxxx clive@xxxxx.xx.xx
Message-ID: <40b0e.255cfe99.3a4f0b9b@xxx.xxx>
Content-Type: text/plain; charset="US-ASCII"
Hi all,
Pleased to report that UO-11 was active and quite strong on the North/South
pass from my QTH in Wales
here in the UK. Approx. 0958 hrs GMT. 31st December 2010.
I have not monitored A0 -7 as yet today ( it was active yesterday) but is
nice to see these old birds seeing out yet another year along with those
much younger in this new world of technology advances..
Just a point to the many enquiries about working satellites -You do not
need high power or high gain antennas to enjoy the hobby - I have used both
my Arrow and Elk antennas for many contacts and still get
good reports.
Wishing you all a "HAPPY NEW YEAR and GOOD LUCK" for 2011.
A big thanks to all that support their time and effort as well as donations
to make the hobby worhwhile.
Ken Eaton
GW1FKY
Amsat - UK
Amsat NA
------------------------------
Message: 7
Date: Fri, 31 Dec 2010 10:33:05 -0500
From: Bill Photinos <Bill@xxxxxxxx.xxx>
Subject: [amsat-bb] LVB Tracker reset problem
To: amsat-bb@xxxxx.xxx
Message-ID: <4D1DF7B1.3060805@xxxxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Got my LVB Tracker from AMSAT last week. Installed it on a G5500.
Calibrated it and it seemed to work fine until yesterday. It seem to now
just randomly reset itself as if it were being power cycled. The LCD
screen posts the startup firmware version message then goes back to
normal. This happens randomly. I have opened up the unit ad everything
seems to be seated well. Any suggestions on where to look? Could this
be a voltage issue from the G5500 or out of the voltage regulator on the
LVB. When this happens it locks the virtual comm port on the computer
causing me to have to reset the rotor & tracking programs.
Thanks,
Bill - W4RVN
------------------------------
Message: 8
Date: Fri, 31 Dec 2010 10:10:43 -0800
From: Clint Bradford <clintbradford@xxx.xxx>
Subject: [amsat-bb] Re: Let Your Garage Charge Your Radio
To: G0MRF@xxx.xxx
Cc: amsat-bb@xxxxx.xxx
Message-ID: <3196D831-6CA6-4BFC-9808-7B9CC3DF02CA@xxx.xxx>
Content-Type: text/plain; CHARSET=US-ASCII
> ... robably OK for NiCd or Lead acid.
The Yaesu FT-60R is a very popular radio, and ships with a NiMH pack. And
this "16 minutes a day" charging system is working out just fine for THOSE
circumstances.
Clint, K6LCS
------------------------------
Message: 9
Date: Fri, 31 Dec 2010 09:18:38 -0900
From: "Edward R. Cole" <kl7uw@xxxxxxxxx.xxx>
Subject: [amsat-bb] Re: Let Your Garage Charge Your Radio
To: amsat-bb@xxxxx.xxx
Message-ID: <201012311818.oBVIIc2v025880@xxxxx.xxxxxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
Pretty good guess, David. These days newer HT come with
Nickel-Metal-Hydride which do not need the kind of maintenance that
NiCD do. Typically they hold charge much longer and do not develop a
"memory" condition.
At my former employment (now retired) we maintained over 200 HT
batteries for immediate emergency response. It was sufficient to put
the chargers on a timer to charge them for a couple hours/day (typ.
at night). Batteries that had not been regularly charged held good
for up to 30-days after a full charge cycle.
Important to use chargers designed for the chemistry of the
battery. Back in the day of NiCD we charged once/week and
reconditioned monthly to extend life on batteries that had to perform
but sat on the shelf for long periods of non-use. The absolutely
worse thing one could do was set a HT into a charger full-time.
In a response van we had a large deep-cycle 4D lead-acid battery and
it was charged with the proper float charger. But not being a sealed
battery, one had to check the electrolyte level periodically.
I the comm center an eight-battery bank wired for 48vdc was run on
float and they typ. were good for 4-years of standby use (fed
industrial size UPS). The 12vdc equipment ran on another large 12v
battery bank with float. That equipment was powered 24/7 with
similar life-cycle of several years. Note that commercial deep-cycle
batteries were used and cost 3x what the typ. car battery costs.
Now I have a 6500w standby generator so battery back-up is less
necessary for the home station (I do have a bank of 8AH gell-cell
batteries). No HT, at present.
73, Ed - KL7UW
At 01:25 AM 12/31/2010, G0MRF@xxx.xxx wrote:
>
>Hi Clint.
>
>Sounds like a unique solution. Probably OK for NiCd or Lead acid.
>
>However, if it's any sort of Lithium technology in those batteries, then
>deep cycling and a top up charge is definately the wrong way.
>
>For maximum shelf life Lithium batteries need to be kept at 40 - 60%
>charge, then topped up when needed. Also, for the maximum number
>of cycles, the
>battery needs a small depth of discharge not deep cycling.
>
>Your friend is probably using NiCd bats, but I thought I would mention it
>just in case anyone thought this would be a good idea for Lithium batteries.
>
>Thanks es HNY
>
>David
>
>In a message dated 30/12/2010 19:20:52 GMT Standard Time,
>clintbradford@xxx.xxx writes:
>
>He also performs a "cycling" of his battery pack every 60 days (running
>the radio until it won't power on, then charging).
>
>After a year-and-a-half of this, his voltage indication is still quite
>high. When he performs his "cycling," the pack seems to not have
>lost a bit of
> capacity.
>
>
>
>
>
>_______________________________________________
>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
73, Ed - KL7UW, WD2XSH/45
======================================
BP40IQ 500 KHz - 10-GHz www.kl7uw.com
EME: 144-1.4kw*, 432-100w*, 1296-testing*, 3400-winter?
DUBUS Magazine USA Rep dubususa@xxxxxxx.xxx
======================================
*temp not in service
------------------------------
Message: 10
Date: Fri, 31 Dec 2010 20:36:45 +0100
From: PA3GUO <pa3guo@xxxxxxx.xx>
Subject: [amsat-bb] Thank you !
To: amsat-bb@xxxxx.xxx
Message-ID: <29939966.1293824206771.JavaMail.root@xxxxxxxx.xxxxxx.xx>
Content-Type: text/plain; charset=utf-8
Dear all,
Here in the Netherlands we have only a few hours left of 2010.
Thank you for all the positive energy this year on the amsat-bb !
It is truly a pleasure to be part of this group.
Have a fantastic 2011 !!
Henk, PA3GUO
------------------------------
_______________________________________________
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 5, Issue 517
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