[KYHAM] RE: KYHAM digest, Vol 1 #234 - 10 msgs
David A. Smith
[email protected]
Fri, 27 Sep 2002 12:11:46 -0700
Hi All,
I always read this bulletin and find great pleasure in reading the tutorials
supplied by Ron Dodson, especially those on emergency power. A Ham left to
avoid freezing to death in the dark with his or her family may be of little
help in a snow or ice emergency. In addition, thanks are always due to Pat
Spencer for the many hours he puts into this digest and the KY Ham Website.
Pat donates graphic art and writing skills that is of the highest quality.
I would suggest a couple of items to add to the excellent tutorial as edited
and provided by Virginia Races by permission. The conversion of lead and
sulfur to form lead sulfate is a normal part of the discharge process and is
a reaction that provides the electrical energy. The sulfation problem
occurs when the cell is left discharged without prompt recharging. Leaving
a lead acid cell in a discharged condition results in the lead sulfate on
both plates forming large crystals that are not easily converted back into
sulphuric acid and active material during the recharging process. Moderate
sulfation is not a terminal failure and can be corrected by cycling the
cell(s) and applying a higher than normal voltage during the equalizing
charge.
An irreversible terminal failure is "hydration" that occurs when the
specific gravity becomes so low during periods of extended complete
discharge. This condition permits the lead components to dissolve into the
electrolyte. These compounds clog the pores in the separators and form
thousands of tiny short circuits upon recharging the cell. There is no way
to correct this condition.
Lead Calcium cells are superior to lead antimony in terms of life expectancy
in standby service. The self-discharge rate is much lower and the normal
corrosion of the plates lower. The writer finds a battery of flooded lead
acid cells a joy to own and use in solar service. A good reference on
battery and fuel cells is Linden's "Handbook of Batteries and Fuel Cells"
ISBN 0-07-037874-6.
73 de W8YZ
David Alkire Smith W8YZ
530 Hollywood Drive
Monroe, Michigan 48162-2943
Phone 734-242-5589
Fax 734-242-8413
Cell 734-479-4686
E-Mail: [email protected]
OR: [email protected]
Please visit our websites at:
http://www.arrl.org/sections/index.html?sect=MI
http://www.msp.state.mi.us/division/emd/staff.html
-----Original Message-----
From: [email protected] [mailto:[email protected]]On
Behalf Of [email protected]
Sent: Friday, September 27, 2002 1:01 AM
To: [email protected]
Subject: KYHAM digest, Vol 1 #234 - 10 msgs
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Today's Topics:
1. KyARES Advisory: Flood Watch! (Ron Dodson)
2. speaker at the ARTS club meeting (John D. Meyers)
3. AEC (John D. Meyers)
4. Asst. EC's in Database (Ron Dodson)
5. Severe Weather Class is now Online (Ron Dodson)
6. KEN Training for Sept. 30: Intro to Auxiliary Power Systems For E-Comm
Part 2 (Ron Dodson)
7. 2002 SET Kit available for download... (Pat Spencer, KD4PWL)
8. Re: 2002 SET Kit available for download... (Ron Dodson)
9. Ky ARES Wx Update: 10:30 PM EDT 9/26 (Ron Dodson)
--__--__--
Message: 1
Date: Thu, 26 Sep 2002 10:27:14 -0400
From: Ron Dodson <[email protected]>
To: "[email protected]" <[email protected]>,
"[email protected]" <[email protected]>,
"Christian Co. Emerg. Services" <[email protected]>
Subject: [KYHAM] KyARES Advisory: Flood Watch!
Issued at: 9:12 AM EDT 9/26/02, expires at: 11:12 AM EDT
9/26/02
The NWS has issued a flood watch for the Following counties,
In south central Indiana,
Jefferson, Scott, Washington, Orange, Clark, Dubois,
Crawford, Harrison, Floyd And Perry. In
north central Kentucky, Trimble, Henry, Oldham, Jefferson,
Shelby, Meade, Spencer, Bullitt,
Breckinridge, Hardin and Hancock. In east central Kentucky,
Harrison, Scott and Franklin. The
watch is in effect until 400 pm edt Friday afternoon(300 pm
cdt friday afternoon). A flood
watch also remains in effect for the following counties in
central Kentucky until 400 pm edt
(300 pm cdt) Friday In east central Kentucky, Nicholas,
Bourbon, Fayette, Woodford, Anderson,
Clark, Jessamine, Mercer, Madison, Garrard And Boyle. In
north central Kentucky, Nelson,
Washington And Larue. In northwest Kentucky, Ohio. In south
central Kentucky, Marion, Lincoln,
Grayson, Casey, Taylor, Green, Hart, butler, Edmonson,
Adair, Warren, Russell, Metcalfe,
Barren, Logan, Cumberland, Allen, Simpson, Clinton and
Monroe. The remnants of tropical storm Isidore will move to
southern Tennessee Thursday evening and to central
Kentucky Friday morning. Significant rain will fall across
the Ohio Valley with this system.
Light to moderate rain across central Kentucky and south
central Indiana will increase in
intensity this afternoon. The heavy rain is expected to
continue tonight and Friday. Total
rainfall amounts of 3 to 6 will fall across the watch area
through Friday afternoon. This
amount of rainfall could cause widespread flooding problems.
A flood watch means that flooding
of small streams, creeks and other drainage areas is
possible within the watch area. People in
the watch area should keep an eye on the weather and be
prepared for immediate action should
heavy rains and flooding occur or a flash flood warning be
issued. The national weather service
will continue to closely monitor this potential flood
situation. Continue to monitor noaa
weather radio and your favorite local media outlet for
further!
updates. Additional information can be found on the nws
louisville website at:
www.crh.noaa.gov/lmk.
--__--__--
Message: 2
Reply-To: "John D. Meyers" <[email protected]>
From: "John D. Meyers" <[email protected]>
To: "Kyham" <[email protected]>
Date: Thu, 26 Sep 2002 13:18:03 -0400
Organization: Kentucky Section Manager
Subject: [KYHAM] speaker at the ARTS club meeting
I am pleased to announce that Gary Johnson, the Great Lakes Division
Director will be the guest speaker at the ARTS club meeting on October 11,
2002. The meeting will be held in the second floor auditorium of the Red
Cross headquarters building at 510 E. Chestnut Street here in Louisville.
You are cordially invited to attend this meeting. The Great Lakes Division
Director position is up for election, and it has turned into a three way
race. Here is your chance to meet and talk with the incumbent Director who
is also one of the candidates.
Please make plans now to attend this very important and informative meeting.
73
Ken, AC4VV
John D. Meyers, NB4K
Kentucky Section Manager
Great Lakes Division
859-472-6690
Prospective hams... call the New Ham Hotline!
1-800-32 NEW HAM (1-800-326-3942)
Or surf to <http://www.arrl.org/hamradio.html>!
http://www.arrl.org/sections/?sect=KY
--__--__--
Message: 3
Reply-To: "John D. Meyers" <[email protected]>
From: "John D. Meyers" <[email protected]>
To: "Kyham" <[email protected]>
Date: Thu, 26 Sep 2002 13:59:43 -0400
Organization: Kentucky Section Manager
Subject: [KYHAM] AEC
Ron Dodson, KA4MAP the S.E.C. will be entering all the AEC's in Kentucky
that is in his database, so make sure he has the most current stats as this
will have to be done very soon. Please read the message below.
73
John D. Meyers, NB4K
Kentucky Section Manager
Great Lakes Division
859-472-6690
Prospective hams... call the New Ham Hotline!
1-800-32 NEW HAM (1-800-326-3942)
Or surf to <http://www.arrl.org/hamradio.html>!
http://www.arrl.org/sections/?sect=KY
Several of you pointed out a potential snag with the Level I Emergency
Communications Course (ARECC) registration that will open to Field
Organization appointees next Tuesday, October 1, for courses beginning
October 15. These courses are offered under the auspices of ARRL's grant
from the Corporation for National and Community Service.
Assistant Emergency Coordinator (AEC) is not an official Station or Section
Field Organization appointment. It is a local appointment made by ECs as
needed to help manage the program in their area. AECs are not tracked in the
national Field Organization appointment database.
The ARECC registration system relies on this appointment database to
determine who is eligible for a class restricted to Field Appointees.
Since HQ has no way of knowing who is an AEC, we'll need your help to build
a database of AECs who are eligible to register along with the official
appointees next Tuesday. If an AEC also holds a Section or Station
appointment, he or she is all set.
To include your AECs in the database, please visit the following Web page:
http://www.arrl.org/members-only/field/ccecand.html
Access to this page is restricted to SMs, SECs, DECs and ECs, who may enter
the call signs of AECs in their Section. SMs can see the list of all AECs
entered in their Section. Others (SECs, DECs and ECs) can see only the
entries they supplied.
This message is being sent only to SMs and SECs, so please spread the word
to DECs or ECs if their assistance is needed.
Again, AECs who also hold other ARRL Field Organization appointments are
already eligible to sign up for the ARECC, Level I, course scheduled to
begin registration October 1. You do not need to list them. Also, anyone who
has already completed or registered for the Level I course need not be
registered, and the system will identify those individuals if you enter
their call signs.
Please note: Entering the call sign into the form does not register the
student for the class. After you have nominated the student, the student
must still visit the following Web site to register for the course:
https://www.arrl.org/forms/cce/ after registration opens October 1.
Approximately 200 seats will be available on a first-come, first-served
basis to Field Organization appointees (including AECs who are registered).
If you have questions, please contact Dan Miller, K3UFG, at [email protected]
or via the telephone at 860-594-0340. Thank you.
73,
Steve Ewald, WV1X
[email protected]
860-594-0265
--__--__--
Message: 4
Date: Thu, 26 Sep 2002 16:43:01 -0400
From: Ron Dodson <[email protected]>
To: "[email protected]" <[email protected]>,
"Christian Co. Emerg. Services" <[email protected]>,
"[email protected]" <[email protected]>,
"[email protected]" <[email protected]>
Subject: [KYHAM] Asst. EC's in Database
ARRL has never maintained a database on Assistant Emergency
Coordinators (AEC's) as these were LOCAL APPOINTMENTS which
did not require ARRL membership as did the others like OES,
EC, DEC, SEC etc.
I have now entered all the AEC;'s who currently appear on
the local resource pages of the Ky Amateur Radio Web.
http://www.qsl.net/kd4pwl/county.html If you are an AEC
and your name appears on these county lists, then you are
eligible to enroll for the Level I Amateur Radio Emergency
Communications Course and be reimbursed through the Homeland
Security Grant.
IF YOU ARE AN AEC AND YOUR NAME DOES NOT APPEAR IN THESE
LISTS... CONTACT ME IMMEDIATELY!
To enrioll in the class, you need to go to this site next
Tuesday, October 1:
https://www.arrl.org/forms/cce/
fill in the info requested and submit it. Have a valid
credit card handy to cover the initial enrollemnt fee of $
45. After you pass the course, your $45 will be reimbursed
to you. It is a self paced training class and you have
plenty of time to complete it, though I recommend not
putting off to the last week or so to do it in. Those who
have followed the KEN Training texts these past four years
or looked at the archived material on the library page of
the web site should have a leg up on Level 1 material and
find it familiar for the most part. I was shocked at how
closely this material EC-001 course mirrored a lot of what
we have been doing since 1999!
This is a great opportunity to get a foot in the door with
the Level I course. Some sections are already requiring
successful completion of this class to even be an ARES
member, NO I am not planning on doing this any time soon for
Ky, however, it is good material and the price is right!
ARRL members will likely become able to register in another
month or two for this training under the Homeland Security
Grant program too. Field appointees are getting first dibs
on the earlybird sessions for now.
73,
Ron, KA4MAP
--__--__--
Message: 5
Date: Thu, 26 Sep 2002 18:10:21 -0400
From: Ron Dodson <[email protected]>
To: "[email protected]" <[email protected]>,
"Christian Co. Emerg. Services" <[email protected]>,
"[email protected]" <[email protected]>,
Club <[email protected]>,
"[email protected]" <[email protected]>,
SAR KY <[email protected]>,
"[email protected]" <[email protected]>
Subject: [KYHAM] Severe Weather Class is now Online
FEMA, on their site, lists an IS-271 Anticipating Hazardous
Weather and Community Risks class. They tell you that the
CD-ROM version is for EM staff only. Here is a link to
allow non-EM people to take the course On-Line.
http://www.meted.ucar.edu/hazwx/
To listen to interspersed audio clips in the course, you
will need the Real Audio plug-in. The latest version of the
RealPlayer software is available free of charge from the
RealNetworks Web site. A link to it is supplied for anyone
not having it in their systems already. If you have a slow
loading connection, they also allow you to pre-load graphics
to save you time and trouble.
This course has four main sections:
Weather: Provides a basic introduction to meteorology,
particularly as
it relates to hazardous weather.
Hazards: Describes the factors that can turn a merely
inconvenient
weather event into a disaster. The section also presents
fact sheets on
the most common hazardous weather events that occur in the
United
States. These fact sheets reproduce the information found in
the
Resource Guide used in the Hazardous Weather and Flooding
Preparedness (G271) course.
Forecasting: Explains the forecast process and what limits
forecast
accuracy. A summary of the various forecast products is
provided.
Warning Partnership: Discusses the various pieces that go
into
producing an effective response to a hazardous situation.
--__--__--
Message: 6
Date: Thu, 26 Sep 2002 20:16:48 -0400
From: Ron Dodson <[email protected]>
To: "[email protected]" <[email protected]>,
"Christian Co. Emerg. Services" <[email protected]>,
"[email protected]" <[email protected]>
Subject: [KYHAM] KEN Training for Sept. 30: Intro to Auxiliary Power Systems
For E-Comm
Part 2
Intro to Auxiliary Power Systems For E-Comm Part 2
Virginia RACES gratefully acknowledges materials provided by
the Battery Council International, Naval Facilities
Engineering Command, Sandia National Laboratories and the
U.S. Army Construction Engineering Research Laboratory, used
in this compilation
Edited by C. Ed Harris, KE4SKY and John Bartone, K4KXK, MSEE
Used here with permission.
--------------------------------
A rule of thumb for sizing a battery systems for a C/20
discharge rate is one amp-hour per watt of transmitter
output. Estimate the amp-hour capacity required to run your
station for 24 hours by summing all loads: transmit current
times total operating time times duty cycle, plus receive
current with squelch open times standby time and repeat for
each piece of equipment. Then multiply the total loads by
150% safety factor. If you are too lazy to actually run the
numbers, use the 1 amp-hour per watt rule for each 24
hours of SSB operation or 12 hours of CW, FM or digital to
ensure an adequate safety margin.
Lead-acid batteries consist of lead alloy grid plates coated
with lead oxide paste, immersed in a solution of sulfuric
acid. In manufacture the plates are subjected to a
"forming" charge which causes the paste on the positive
grid plates to convert to lead dioxide. The paste on the
negative plates converts to "sponge" lead. Both materials
are highly porous, allowing electrolyte to freely penetrate
the plates. Plates are alternated in the battery, with
porous, nonconductive separators between them, or with each
positive plate surrounded by an envelope, open at the top.
A group of negative and positive plates with their
separators makes up an element. When immersed in
electrolyte, an element comprises a battery "cell."
In lead acid batteries each cell is nominally 2 volts.
Multiple cells are connected in series to increase voltage.
Larger or more plates increase amp-hour capacity, but not
voltage. Thicker or fewer plates per cell allow more cycles
and longer life for the battery. The lower the antimony
content in the plates, the lower the internal resistance
and the less resistant the battery is to charging. Less
antimony also reduces water consumption through
electrolysis.
Pure lead plates may break during transportation or service
operations requiring removal of the battery. More antimony
allows deeper discharge without damage to the plates and
longer service life. The plates in most automotive
batteries are 2-3% antimony and deep cycle batteries 5-6%
. Calcium or strontium are used in sealed lead-acid
batteries and offer the same benefits and drawbacks as
antimony, but reduce self discharge when the battery is
stored without being used. Do not exceed 25% DoD with Pb-Ca
batteries, such as gel cells!
Cells in lead-acid batteries are vented to permit hydrogen
and oxygen to escape during charging and to provide an
opening for replacing water lost due to electrolysis. Open
caps are common in flooded batteries, but some are flame
arrester type to prevent a flame outside the battery from
entering the cell. "Recombinant" caps contain a catalyst
which causes hydrogen and oxygen liberated during charging
to recombine into water, reducing the need to replace water
lost from the battery. These are recommended for
stationary batteries in seasonal equipment which left for
long periods on a maintenance level float charge or to be
used in photovoltaic systems.
The percentage of acid in battery electrolyte is measured by
its specific gravity (Sg). Only batteries which use acid
electrolyte can use specific gravity as a measurement of the
state of charge. A hydrometer is used to measure how much
the electrolyte weighs compared to an equal quantity of
water. The greater the state of charge, the higher the
specific gravity of the electrolyte. The lower the state of
charge, the weaker the acid and the lighter the
electrolyte. Differences in acid density are measured by
the float in a hydrometer, which rises higher in an
electrolyte sample of high Sg than in one with a lower Sg.
Measuring Sg of a wet, lead-acid battery during discharge is
a good indicator of the state of charge. A fully charged
battery has an Sg of 1.265 grams per cubic centimeter, at
75% charge 1.225, 50% charge 1.19 and fully discharged
1.120. During charging of a flooded battery Sg lags the
charge state because complete mixing of the electrolyte does
not occur until gassing commences near the end of the charge
cycle. Because of uncertainty of mixing, this measurement
on a fully charged battery is a better indicator of the
health of a cell. Therefore, Sg is not the absolute measure
of capacity, but is considered in combination with load
testing and open circuit voltage. Lead-acid batteries
accept only about 1/10 of the charging current at 30 degs. F
which they will accept at 80 degs. F.
Lead-acid batteries at normal ambient temperature should be
charged current from 1/10 to 1/20 of capacity. When not in
service, all lead-acid batteries self discharge at rate of
about 5% per month. The rate of self discharge increases
with the temperature. If a lead-acid battery is left in a
deeply discharged condition for a long time it becomes
"sulfated" as sulphur in the acid combines with lead from
the plates to form lead sulphate.
--__--__--
Message: 7
Date: Thu, 26 Sep 2002 21:37:42 -0400
To: [email protected]
From: "Pat Spencer, KD4PWL" <[email protected]>
Subject: [KYHAM] 2002 SET Kit available for download...
Over the past week the scenario and reporting guidelines for the SET have
been released over KYHAM. I have compiled this information in text file
format and made it available on the KY Amateur Radio Resource page at
http://www.qsl.net/kd4pwl/library/. The link is located directly under the
link for the Kentucky Emergency Response in the Informational Resources
section on the right side of the page.
73, Take care,
Pat
--__--__--
Message: 8
Date: Thu, 26 Sep 2002 22:01:22 -0400
From: Ron Dodson <[email protected]>
To: [email protected]
Subject: Re: [KYHAM] 2002 SET Kit available for download...
The link misfired because of the period on the end. Here you go folks.
http://www.qsl.net/kd4pwl/library.html
73 and Thanks Pat,
Ron
"Pat Spencer, KD4PWL" wrote:
> Over the past week the scenario and reporting guidelines for the SET have
> been released over KYHAM. I have compiled this information in text file
> format and made it available on the KY Amateur Radio Resource page at
> http://www.qsl.net/kd4pwl/library/. The link is located directly under
the
> link for the Kentucky Emergency Response in the Informational Resources
> section on the right side of the page.
>
> 73, Take care,
> Pat
>
> _______________________________________________
> Support Amateur Radio in Kentucky!
> http://www.qsl.net/kd4pwl/index.html
> http://mailman.qth.net/mailman/listinfo/kyham
--__--__--
Message: 9
Date: Thu, 26 Sep 2002 22:36:16 -0400
From: Ron Dodson <[email protected]>
To: "[email protected]" <[email protected]>,
"[email protected]" <[email protected]>,
"Christian Co. Emerg. Services" <[email protected]>
Subject: [KYHAM] Ky ARES Wx Update: 10:30 PM EDT 9/26
At this time the remains of Tropical Storm Isidore continue
to move through the Ky Section. Amateurs should continue to
monitor local media and NWS broadcasts for additional flash
flood watches and warnings across the state. Rainfalls of
2-6 inches are predicted across the Commonwealth through 4
PM EDT Friday Sept. 27.
For the latest in weather advisories and warnings, you can
also see;
http://iwin.nws.noaa.gov/iwin/ky/allwarnings.html
ARES activations may be required if flooding becomes severe
in some areas.
73,
Ron, KA4MAP
--__--__--
_______________________________________________
Support Amateur Radio in Kentucky!
http://www.qsl.net/kd4pwl/index.html
http://mailman.qth.net/mailman/listinfo/kyham
End of KYHAM Digest