Date: Mon, 13 Dec 93 15:40:41 PST
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Subject: Info-Hams Digest V93 #1459
To: Info-Hams
Info-Hams Digest Mon, 13 Dec 93 Volume 93 : Issue 1459
Today's Topics:
6-m Transverters
ANS-345 BULLETINS
Daily Summary of Solar Geophysical Activity for 10 December
Daily Summary of Solar Geophysical Activity for 11 December
Pie-on-face re: Hypocondriac
Scratchi, January, 1960
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----------------------------------------------------------------------
Date: 13 Dec 93 14:11:57 GMT
From: ogicse!emory!kd4nc!ke4zv!gary@network.ucsd.edu
Subject: 6-m Transverters
To: info-hams@ucsd.edu
In article <CHu4o7.407@srgenprp.sr.hp.com> alanb@sr.hp.com (Alan Bloom) writes:
>Robert Carpenter (rc@cmr.ncsl.NIst.GOV) wrote:
>
>: Some of the older xverters, such as the Hallicrafters HA-6, were all-tube and
>: put out close to 100 watts. Their receive side wasn't great, being a
>: 6CW4 Nuvistor (intermod) for rf amplifier.
>
>I always thought that superior strong-signal handling capability was one
>of the ADVANTAGES of a tube-type front end. One disadvantage of a 6CW4 is
>a noise figure worse than you can get with modern solid-state devices.
>This is a problem on 2 meters, but not a concern on 6, where atmospheric
>noise levels are higher.
The tube *should* have less intermod, but if the static operating
conditions aren't right, it can have severe intermod. A usual cause
is too low a plate voltage, and/or too low a standing current.
Gary
--
Gary Coffman KE4ZV | I kill you, | gatech!wa4mei!ke4zv!gary
Destructive Testing Systems | You kill me, | uunet!rsiatl!ke4zv!gary
534 Shannon Way | We're the Manson Family | emory!kd4nc!ke4zv!gary
Lawrenceville, GA 30244 | -sorry Barney |
------------------------------
Date: 13 Dec 93 00:19:59 GMT
From: news-mail-gateway@ucsd.edu
Subject: ANS-345 BULLETINS
To: info-hams@ucsd.edu
SB SAT @ AMSAT $ANS-345.01
AO-13 FACES LONG ECLIPSE PERIODS
HR AMSAT NEWS SERVICE BULLETIN 345.01 FROM AMSAT HQ
SILVER SPRING, MD DECEMBER 11, 1993
TO ALL RADIO AMATEURS BT
BID: $ANS-345.01
AO-13 Experiences Long Solar Eclipse Which Affect Transponder Operations
James Miller (G3RUH) of the AO-13 Command Team reports that because of the
long duration of the solar eclipse periods that AO-13 is experiencing, they
have been forced to severely curtail transponder operations. Some of the
eclipse periods have been as long as 2 hours. Battery bus voltage has
become so low that the net affect has been that there has been no battery
charging from orbit to orbit. The safety threshold on the battery bus
voltage is currently set 12.6 volts. When the bus voltage drops below 12.6
volts, the on-board computer shuts down the beacon and brings all the other
subsystems on AO-13 to a "low-power" state. Currently, with the trans-
ponders and telemetry beacons turned-off, the total current consumption on
AO-13 is around 1 ampere. In attempt to remedy this low battery voltage
problem, the Command Team has made an spacecraft attitude re-adjustment to
Bahn Longitude 245 degrees and a Bahn Latitude of -5 degrees. But under
the current solar eclipse circumstances, even this has not been sufficient
to solve the problem of low battery voltage. So it was necessary to take
even further steps including turning off all transponder operations on
AO-13 until between Friday December 10 and Monday December 13, 13-DEC-93
around 03:28 UTC. It is hoped that this will bring AO-13 through this
difficult time period, however, there is no guarantee that the above
actions will be enough. It should be noted that AO-13's batteries are now
5 years old and the Command Team feels that is may be necessary to take a
close look at the battery charging software and presets to determine if
they need to be adjusted for the age of the batteries.
It is requested that all AO-13 users keep a close "ear" to the telemetry
beacons which can be heard on a downlink frequency 145.812 MHz or 2400.646
MHz for the latest information on the transponder schedule.
The Command Team is always interested in hearing from the user any
"constructive feedback" about AO-13 transponder operations.
The AO-13 Command Team ccurrnetlu consists of the following:
Peter DB2OS @ DB0FAU
James G3RUH @ GB7DDX
Graham VK5AGR @ VK5WI
[The AMSAT News Service (ANS) would like to thank G3RUH for the information
which went into this bulletin item.]
/EX
SB SAT @ AMSAT $ANS-345.02
IO-26 SUFFERS OBC CRASH
HR AMSAT NEWS SERVICE BULLETIN 345.02 FROM AMSAT HQ
SILVER SPRING, MD DECEMBER 11, 1993
TO ALL RADIO AMATEURS BT
BID: $ANS-345.02
IK2OVV Explains the IO-26 On-Board-Computer (OBC) Crash
After 45 days of uninterrupted BBS service on IO-26, on 8-DEC-93 at
approximately 11:30 UTC, ITAMSAT IO-26 suffered a crash during a pass over
Europe. IO-26 is now in an undefined status, with its trasmitter on but no
MBL telemetry; the Command Team will try to regain control of the satellite
in the next passes over Europe. The cause of the crash is still unclear;
the Command Team is investigating on some new software used to access the
BBS services. In the past, some other MICROSATs crashes were due to bugs
found in the user software. ITAMSAT Command Team, while recommending users
not to uplink to the satellite at this time, would like to receive reports
about IO-26, especially regarding the presence of just the HDLC flags on
the downlink or some sort of telemetry, either MBL or PHT style. However,
after examining the memory dumps taken from IO-26, Alberto Zagni (I2KBD)
and Harold Price (NK6K) have decided to begin the uploading of the high-
level software to restore IHT (ITAMSAT Housekeeping Task) capability.
The cause of the crash is still unknown; I2KBD and NK6K are working on
the memory dumps, but the crash destroyed part of the internal logs kept
by the high-level software. Since the crash happened as one of the Ground
Command Stations in Milan was uplinking to the satellite using a new ground
software (which has not yet been fully tested), there is chance that this
was the cause of the crash. The ITAMSAT Command Team has decided not to
turn the BBS on after the reloading of the software; the Team will start
some Whole Orbit Data (WOD) collection in order to fully optimize the
energy budget onboard the satellite. This will enable IO-26 to have higher
power settings on the downlink. It is estimated that the high-level
software will be working by this soon; stay tuned on the downlink for any
news!
The ITAMSAT Command Team would like to thank again Harold Price (NK6K)
for the great help in debugging the memory dumps and the Eyesat Command
Team for helping during the initial recovery.
ITAMSAT Command Team can be reached via Internet as i2kbd@amsat.org
or ik2ovv@amsat.org, and on Compuserve HAMNET.
73 de Luca Bertagnolio IK2OVV
ITAMSAT Command Team
/EX
SB SAT @ AMSAT $ANS-345.03
AMSAT OPS NET SCHEDULE
HR AMSAT NEWS SERVICE BULLETIN 345.03 FROM AMSAT HQ
SILVER SPRING, MD DECEMBER 11, 1993
TO ALL RADIO AMATEURS BT
BID: $ANS-345.03
Current AMSAT Operations Net Schedule For AO-13
AMSAT Operations Nets are planned for the following times. Mode-B Nets
are conducted on AO-13 on a downlink frequency of 145.950 MHz. If, at the
start of the OPS Net, the frequency of 145.950 MHz is being used for a QSO,
OPS Net enthusiasts are asked to move to the alternate frequency of 145.955
MHz.
Date UTC Mode Phs NCS Alt NCS
3-Jan-94 0200 B 160 WA5ZIB N7NQM
Any stations with information on current events would be most welcomed.
Also, those interested in discussing technical issues or who have questions
about any particular aspect of OSCAR statellite operations, are encouraged
to join the OPS Nets. In the unlikely event that either the Net Control
Station (NCS) or the alternate NCS do not call on frequency, any
participant is invited to act as the NCS.
**************************************
Slow Scan Television on AO-13
SSTV sessions will be held on immediately after the OPS Nets a downlink
on a Mode-B downlink frequency 145.960 MHz.
/EX
SB SAT @ AMSAT $ANS-345.04
WEEKLY OSCAR STATUS REPORTS
HR AMSAT NEWS SERVICE BULLETIN 345.04 FROM AMSAT HQ
SILVER SPRING, MD DECEMBER 11, 1993
TO ALL RADIO AMATEURS BT
BID: $ANS-345.04
Weekly OSCAR Status Reports: 11-DEC-93
AO-13: Current Transponder Operating Schedule:
L QST *** AO-13 TRANSPONDER SCHEDULE *** 1993 Nov 15-Jan 31
Mode-B : MA 0 to MA 95 ! / Eclipses, max
Mode-B : MA 95 to MA 180 ! OFF Dec 07 - 24. < duration 136
Mode-B : MA 180 to MA 218 ! \ minutes.
Mode-S : MA 218 to MA 220 !<- S beacon only
Mode-S : MA 220 to MA 230 !<- S transponder; B trsp. is OFF
Mode-BS : MA 230 to MA 256 ! Blon/Blat 240/-5
Omnis : MA 250 to MA 150 ! Move to attitude 180/0, Jan 31
[G3RUH/DB2OS/VK5AGR]
FO-20: The following is the FO-20 operating schedule:
Analog mode: 15-Dec-93 07:41 -to- 22-Dec-93 8:05 UTC
Digital mode: otherwise noted above. [JJ1WTK]
IO-26: ITAMSAT sufferred a system crash after 45 days of flawless
operations. The command team is gathering data to try to determine
the source of the problem. They state that the transmitter is on,
but the BBS is not open.
AO-16: Operations are normal. [WH6I]
LO-19: Operations are normal. [WH6I]
KO-23: Functioning normally. There have been some questions regarding
image files. When WH6I see some images on KITSAT, he trys to list
them, but files on that satellite are only active for maybe 5-6
days depending on how much new material is uploaded. Therefore, by
the time this status report makes it to the ANS status report,
the files may be gone. Satellite image files on KITSAT have names
in the form KAI?xxxx where ? is either W or N to indicate a WIDE
or NARROW view image. The "xxxx" is a serial number. These files
are about 350Kbytes large and can be seen in the directory in PB by
hitting F4 to see the list of files generated by the satellite.
They are usually in pairs with a wide and narrow view file. These
files are downloaded just like anyother file. The program DISPLAY
which is often up on the birds willdisplay these images, and it will
display whatever there is in the xxxx.ACT file of the image, so that
you can look at a partial download and decide if it is worth
pursuing. [WH6I]
RS-10: After a period of inactivity, the RS-10 QSO robot is QRV again. The
downlink is approx 29.403 MHz, and uplink is +/- 145.820 MHz. If
you are "into" the robot receiver, your CW from the few KHz wide
passband will be retransmitted on the robot's fixed frequency. The
speed of your CW response is not important; it just needs to be
steadily and cleanly sent. K0BJ notes that he just changed from a
vertical dipole to a J-pole. It seems so far to be about as bad
with QSB as the dipole, but the J-pole did seem to peak more in the
longer, low-elevation parts of the pass. The next experiment K0BJ
will perform is with a turnstile antenna.
POSAT: CT1ENQ would like to inform that the Portuguese satellite (POSAT) is
now prepared for amateur radio use. Please contact Portuguese AMSAT
group, AMSAT-PO, for more information.
The AMSAT NEWS Service (ANS) is looking for volunteers to contribute weekly
OSCAR status reports. If you have a favorite OSCAR which you work on a
regular basis and would like to contribute to this bulletin, please send
your observations to WD0HHU at his CompuServe address of 70524,2272, on
INTERNET at wd0hhu@amsat.org, or to his local packet BBS in the Denver, CO
area, WD0HHU @ W0LJF.#NECO.CO.USA.NOAM. Also, if you find that the current
set of orbital elements are not generating the correct AOS/LOS times at
your QTH, PLEASE INCLUDE THAT INFORMATION AS WELL. The information you
provide will be of value to all OSCAR enthusiasts.
/EX
------------------------------
Date: Fri, 10 Dec 1993 22:17:03 MST
From: library.ucla.edu!europa.eng.gtefsd.com!avdms8.msfc.nasa.gov!sol.ctr.columbia.edu!destroyer!nntp.cs.ubc.ca!alberta!nebulus!ve6mgs!usenet@network.ucsd.edu
Subject: Daily Summary of Solar Geophysical Activity for 10 December
To: info-hams@ucsd.edu
/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
DAILY SUMMARY OF SOLAR GEOPHYSICAL ACTIVITY
10 DECEMBER, 1993
/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
(Based In-Part On SESC Observational Data)
SOLAR AND GEOPHYSICAL ACTIVITY INDICES FOR 10 DECEMBER, 1993
------------------------------------------------------------
!!BEGIN!! (1.0) S.T.D. Solar Geophysical Data Broadcast for DAY 344, 12/10/93
10.7 FLUX=096.1 90-AVG=097 SSN=060 BKI=1213 2201 BAI=005
BGND-XRAY=B1.4 FLU1=1.8E+05 FLU10=1.1E+04 PKI=2223 3221 PAI=007
BOU-DEV=005,014,008,029,011,012,001,005 DEV-AVG=010 NT SWF=00:000
XRAY-MAX= B2.8 @ 0445UT XRAY-MIN= B1.3 @ 2256UT XRAY-AVG= B1.6
NEUTN-MAX= +002% @ 2345UT NEUTN-MIN= -003% @ 0140UT NEUTN-AVG= -0.0%
PCA-MAX= +0.0DB @ 2355UT PCA-MIN= -0.3DB @ 1405UT PCA-AVG= -0.0DB
BOUTF-MAX=55353NT @ 0542UT BOUTF-MIN=55333NT @ 1916UT BOUTF-AVG=55348NT
GOES7-MAX=P:+000NT@ 0000UT GOES7-MIN=N:+000NT@ 0000UT G7-AVG=+064,+000,+000
GOES6-MAX=P:+116NT@ 1810UT GOES6-MIN=N:-069NT@ 0856UT G6-AVG=+086,+025,-041
FLUXFCST=STD:095,095,095;SESC:095,095,095 BAI/PAI-FCST=010,010,010/015,015,010
KFCST=1223 4322 1223 4322 27DAY-AP=008,011 27DAY-KP=2132 3221 1223 3423
WARNINGS=
ALERTS=
!!END-DATA!!
NOTE: The Effective Sunspot Number for 09 DEC 93 was 40.0.
The Full Kp Indices for 09 DEC 93 are: 2o 2- 1+ 2- 2+ 2- 1o 2-
SYNOPSIS OF ACTIVITY
--------------------
Solar activity was very low. No flares were reported.
Three regions were numbered: 7631 (N13W33), 7632 (N06E58), and
7633 (S18W47). Region 7631 has since lost its spot.
Solar activity forecast: solar activity is expected to be
very low.
The geomagnetic field was quiet to mildly unsettled.
Geophysical activity forecast: the geomagnetic field is
expected to be unsettled throughout the period.
Event probabilities 11 dec-13 dec
Class M 01/01/01
Class X 01/01/01
Proton 01/01/01
PCAF Green
Geomagnetic activity probabilities 11 dec-13 dec
A. Middle Latitudes
Active 15/15/15
Minor Storm 05/05/05
Major-Severe Storm 01/01/01
B. High Latitudes
Active 15/20/20
Minor Storm 10/10/10
Major-Severe Storm 01/01/01
HF propagation conditions were near-normal over the low
and middle latitude paths. High and polar latitude paths saw
near-normal propagation intermixed with occasional isolated
minor signal degradation, mostly during the local night sectors
and on paths transiting the sunrise sector. These conditions
will likely persist over the next several days. Near-normal
propagation should continue over the middle and lower latitude
paths. MUFs have been and likely will remain depressed by up to
approximately 20 to 30 percent.
COPIES OF JOINT USAF/NOAA SESC SOLAR GEOPHYSICAL REPORTS
========================================================
REGIONS WITH SUNSPOTS. LOCATIONS VALID AT 10/2400Z DECEMBER
-----------------------------------------------------------
NMBR LOCATION LO AREA Z LL NN MAG TYPE
7629 S21W40 083 0080 DAO 08 012 BETA
7630 S09W42 085 0050 CAO 07 006 BETA
7632 N06E58 345 0020 HRX 01 001 ALPHA
7633 S18W47 090 0000 AXX 00 001 ALPHA
7627 S15W64 108 PLAGE
7631 N13W33 076 PLAGE
REGIONS DUE TO RETURN 11 DECEMBER TO 13 DECEMBER
NMBR LAT LO
NONE
LISTING OF SOLAR ENERGETIC EVENTS FOR 10 DECEMBER, 1993
-------------------------------------------------------
BEGIN MAX END RGN LOC XRAY OP 245MHZ 10CM SWEEP SWF
NO EVENTS OBSERVED
POSSIBLE CORONAL MASS EJECTION EVENTS FOR 10 DECEMBER, 1993
-----------------------------------------------------------
ISOLATED HOLES AND POLAR EXTENSIONS
EAST SOUTH WEST NORTH CAR TYPE POL AREA OBSN
53 S38E66 S38E66 S12E14 S10E20 011 ISO NEG 010 10830A
SUMMARY OF FLARE EVENTS FOR THE PREVIOUS UTC DAY
------------------------------------------------
Date Begin Max End Xray Op Region Locn 2695 MHz 8800 MHz 15.4 GHz
------ ---- ---- ---- ---- -- ------ ------ --------- --------- ---------
09 Dec: 0111 0114 0116 B4.2
0206 0214 0220 B4.9
0318 0322 0326 B4.1 SF 7629 S22W15
0420 0424 0426 B3.1
REGION FLARE STATISTICS FOR THE PREVIOUS UTC DAY
------------------------------------------------
C M X S 1 2 3 4 Total (%)
-- -- -- -- -- -- -- -- --- ------
Region 7629: 0 0 0 1 0 0 0 0 001 (25.0)
Uncorrellated: 0 0 0 0 0 0 0 0 003 (75.0)
Total Events: 004 optical and x-ray.
EVENTS WITH SWEEPS AND/OR OPTICAL PHENOMENA FOR THE LAST UTC DAY
----------------------------------------------------------------
Date Begin Max End Xray Op Region Locn Sweeps/Optical Observations
------ ---- ---- ---- ---- -- ------ ------ ---------------------------
NO EVENTS OBSERVED.
NOTES:
All times are in Universal Time (UT). Characters preceding begin, max,
and end times are defined as: B = Before, U = Uncertain, A = After.
All times associated with x-ray flares (ex. flares which produce
associated x-ray bursts) refer to the begin, max, and end times of the
x-rays. Flares which are not associated with x-ray signatures use the
optical observations to determine the begin, max, and end times.
Acronyms used to identify sweeps and optical phenomena include:
II = Type II Sweep Frequency Event
III = Type III Sweep
IV = Type IV Sweep
V = Type V Sweep
Continuum = Continuum Radio Event
Loop = Loop Prominence System,
Spray = Limb Spray,
Surge = Bright Limb Surge,
EPL = Eruptive Prominence on the Limb.
** End of Daily Report **
------------------------------
Date: Sat, 11 Dec 1993 20:54:17 MST
From: library.ucla.edu!europa.eng.gtefsd.com!avdms8.msfc.nasa.gov!sol.ctr.columbia.edu!destroyer!nntp.cs.ubc.ca!alberta!nebulus!ve6mgs!usenet@network.ucsd.edu
Subject: Daily Summary of Solar Geophysical Activity for 11 December
To: info-hams@ucsd.edu
/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
DAILY SUMMARY OF SOLAR GEOPHYSICAL ACTIVITY
11 DECEMBER, 1993
/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
(Based In-Part On SESC Observational Data)
SOLAR AND GEOPHYSICAL ACTIVITY INDICES FOR 11 DECEMBER, 1993
------------------------------------------------------------
!!BEGIN!! (1.0) S.T.D. Solar Geophysical Data Broadcast for DAY 345, 12/11/93
10.7 FLUX=092.5 90-AVG=097 SSN=059 BKI=2132 1200 BAI=005
BGND-XRAY=B1.2 FLU1=1.6E+05 FLU10=1.1E+04 PKI=2232 2210 PAI=008
BOU-DEV=015,009,038,010,008,012,004,004 DEV-AVG=013 NT SWF=00:000
XRAY-MAX= B2.5 @ 2337UT XRAY-MIN= B1.1 @ 1959UT XRAY-AVG= B1.3
NEUTN-MAX= +002% @ 1405UT NEUTN-MIN= -002% @ 0815UT NEUTN-AVG= +0.2%
PCA-MAX= +0.1DB @ 0750UT PCA-MIN= -0.5DB @ 1100UT PCA-AVG= -0.0DB
BOUTF-MAX=55353NT @ 1522UT BOUTF-MIN=55336NT @ 1857UT BOUTF-AVG=55347NT
GOES7-MAX=P:+000NT@ 0000UT GOES7-MIN=N:+000NT@ 0000UT G7-AVG=+063,+000,+000
GOES6-MAX=P:+114NT@ 1609UT GOES6-MIN=N:-072NT@ 1004UT G6-AVG=+085,+022,-035
FLUXFCST=STD:090,090,090;SESC:090,090,090 BAI/PAI-FCST=010,010,010/015,010,010
KFCST=1223 3221 1223 3221 27DAY-AP=011,009 27DAY-KP=1223 3423 3322 2123
WARNINGS=
ALERTS=
!!END-DATA!!
NOTE: The Effective Sunspot Number for 10 DEC 93 was 49.5.
The Full Kp Indices for 10 DEC 93 are: 2- 2+ 2- 3- 3- 2o 2- 1o
SYNOPSIS OF ACTIVITY
--------------------
Solar activity was very low. All regions on the disk were
quiet and stable.
Solar activity forecast: solar activity is expected to be
very low to low.
The geomagnetic field was predominantly quiet to unsettled.
Some brief isolated active periods occurred at high latitudes
from 0600-1200UT.
Geophysical activity forecast: the geomagnetic field is
expected to be generally unsettled for the next three days.
Event probabilities 12 dec-14 dec
Class M 01/01/01
Class X 01/01/01
Proton 01/01/01
PCAF Green
Geomagnetic activity probabilities 12 dec-14 dec
A. Middle Latitudes
Active 15/15/15
Minor Storm 05/05/05
Major-Severe Storm 01/01/01
B. High Latitudes
Active 15/15/15
Minor Storm 05/05/05
Major-Severe Storm 01/01/01
HF propagation conditions were normal over the low and
middle latitude regions. However, conditions over the high and
polar latitude regions continued to be below-normal with
relatively poor propagation. Poor propagation has been
confined mostly to the night and sunrise sectors. Although
conditions may improve somewhat over the next several days,
provided geomagnetic activity remains quiet, propagation will
likely be slow to recover due to the weak state of the
ionosphere.
COPIES OF JOINT USAF/NOAA SESC SOLAR GEOPHYSICAL REPORTS
========================================================
REGIONS WITH SUNSPOTS. LOCATIONS VALID AT 11/2400Z DECEMBER
-----------------------------------------------------------
NMBR LOCATION LO AREA Z LL NN MAG TYPE
7629 S21W54 084 0100 CAO 10 012 BETA
7630 S10W57 087 0050 CSO 08 005 BETA
7632 N05E44 346 0000 AXX 01 001 ALPHA
7633 S18W60 090 0000 AXX 01 001 ALPHA
7627 S15W77 107 PLAGE
7631 N13W46 076 PLAGE
REGIONS DUE TO RETURN 12 DECEMBER TO 14 DECEMBER
NMBR LAT LO
7620 N03 268
LISTING OF SOLAR ENERGETIC EVENTS FOR 11 DECEMBER, 1993
-------------------------------------------------------
BEGIN MAX END RGN LOC XRAY OP 245MHZ 10CM SWEEP SWF
NO EVENTS OBSERVED
POSSIBLE CORONAL MASS EJECTION EVENTS FOR 11 DECEMBER, 1993
-----------------------------------------------------------
ISOLATED HOLES AND POLAR EXTENSIONS
EAST SOUTH WEST NORTH CAR TYPE POL AREA OBSN
NO DATA AVAILABLE FOR ANALYSIS
SUMMARY OF FLARE EVENTS FOR THE PREVIOUS UTC DAY
------------------------------------------------
Date Begin Max End Xray Op Region Locn 2695 MHz 8800 MHz 15.4 GHz
------ ---- ---- ---- ---- -- ------ ------ --------- --------- ---------
10 Dec: 2258 2305 2310 B2.5
REGION FLARE STATISTICS FOR THE PREVIOUS UTC DAY
------------------------------------------------
C M X S 1 2 3 4 Total (%)
-- -- -- -- -- -- -- -- --- ------
Uncorrellated: 0 0 0 0 0 0 0 0 001 (100.0)
Total Events: 001 optical and x-ray.
EVENTS WITH SWEEPS AND/OR OPTICAL PHENOMENA FOR THE LAST UTC DAY
----------------------------------------------------------------
Date Begin Max End Xray Op Region Locn Sweeps/Optical Observations
------ ---- ---- ---- ---- -- ------ ------ ---------------------------
NO EVENTS OBSERVED.
NOTES:
All times are in Universal Time (UT). Characters preceding begin, max,
and end times are defined as: B = Before, U = Uncertain, A = After.
All times associated with x-ray flares (ex. flares which produce
associated x-ray bursts) refer to the begin, max, and end times of the
x-rays. Flares which are not associated with x-ray signatures use the
optical observations to determine the begin, max, and end times.
Acronyms used to identify sweeps and optical phenomena include:
II = Type II Sweep Frequency Event
III = Type III Sweep
IV = Type IV Sweep
V = Type V Sweep
Continuum = Continuum Radio Event
Loop = Loop Prominence System,
Spray = Limb Spray,
Surge = Bright Limb Surge,
EPL = Eruptive Prominence on the Limb.
** End of Daily Report **
------------------------------
Date: 13 Dec 93 16:22:42 GMT
From: news-mail-gateway@ucsd.edu
Subject: Pie-on-face re: Hypocondriac
To: info-hams@ucsd.edu
ebs@crystal.cirrus.com Mon Dec 13 10:41:47 1993 rightly complains about my
math...
I said
>>4b) To obtain the power density at any distance, merely divide the isotropic-
>>radiator ERP by the surface area of a sphere of the desired radius. This is
>>because an isotropic radiator equally illuminates every part of the sphere.
He said
>The origional distance given was 100ft or ~30m.
I said
>> Area of sphere of radius 300 m = 4 pi (300)^2 = 1 130 940 m^2
>> Main-lobe power density at 300 m distance = 3.2*10^3 / 1.1*10^6 =
>> = 2.9 W/m^2 <<should be mW/m^2
>> = 0.29 mW/cm^2 << uW/cm^2
He said
>Using your 300m number this should be 2.8mW/m^2, or .28uW/cm^2. This is a very small
>number, but it is consistant with your 300m distance instead of the 30m. If you use
>the 30m number, you will get 28.3uW/cm^2 which is right in there with the latest
>numbers we have all been calculating.
I said
>>Wasn't this simple? Wasn't this correct?
He said
>Well, close. :-)
Criticism accepted.....
Bob W3OTC
------------------------------
Date: Fri, 10 Dec 1993 08:29:55 -0500
From: ucsnews!sol.ctr.columbia.edu!howland.reston.ans.net!usenet.ins.cwru.edu!news.ysu.edu!psuvm!cunyvm!rohvm1!rohvm1.mah48d@network.ucsd.edu
Subject: Scratchi, January, 1960
To: info-hams@ucsd.edu
1. Political rectitude sucks! It has deprived us of access to some of our
history and classics, merely because it might "offend" someone. How can
you understand yourself if you cannot access the information on your
background. Case in point, I cannot see Disney ever re-releasing _Song of
the South_, which was a delightful movie, because it is a stereotype.
2. I read a couple of issues of CQ back in the late '50's, and found it
puerile then (the Scratchi articles definitely contributed to the
impression), and I was only a teenager at the time. The posting was
interesting nostalgia, but the literary quality was...
3. Isn't this an _amateur radio_ group?? CQ real ham stuff!
73 all, de John, W3ZID
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Date: 13 Dec 93 13:55:22 GMT
From: ogicse!emory!kd4nc!ke4zv!gary@network.ucsd.edu
To: info-hams@ucsd.edu
References <thweatt.755217435@mustang18>, <1993Dec8.123356.6473@ke4zv.atl.ga.us>, <2eagk2$n11@wuecl.wustl.edu>
Reply-To : gary@ke4zv.atl.ga.us (Gary Coffman)
Subject : Re: ARRL BOOK???WHERE???
In article <2eagk2$n11@wuecl.wustl.edu> jlw3@cec2.wustl.edu (Jesse L Wei) writes:
>Gary Coffman (gary@ke4zv.atl.ga.us) wrote:
>: that. First and foremost they have to dumb it down to the reading level
>: of current amateurs. It's currently at about an eighth grade reading
>: level. And second, the simple CW transmitter construction projects included
>
>Wait--I don't find the handbook (1991 ed) particularly easy reading--I'm
>definitely not at the eight grade level. OK, maybe just college, but
>even so, that handbook isn't really that simple to read if you aren't
>so experienced as to be an engineer or for that matter, an Advanced--
>Granted, things like electrical theory are um. . .abbreviated, but I think
>they are for people like me, who only have limited experience in
>electrical networks.
The concepts aren't easier. In fact they receive less in depth
treatment now than they did in earlier works, so they are actually
harder to understand. What I'm talking about is prose style. This
isn't confined to the Handbook of course, US Army tech manuals have
also had to be rewritten at a lower reading comprehension level.
This means smaller words, shorter sentences, etc. It's not quite
at the "See Spot run." level yet, but that's the direction.
>: One of the better years for the Handbook is 1962. That's the edition to
>: which I refer most often. It uses bigger words and more complex sentence
>: structure, but it should be accessable to someone who was a tenth grader
>: in 1962, or to current college graduates. It includes more ambitious
>
>Are these current college graduated assumed to have graduated in a techincal
>field. i.e. What if the graduate is a graduate in the humanities or
>natural sciences??????
The assumption is that they have a grasp of the English language. Even
college graduates today often have smaller vocabularies, and grasp of
sentence structure and internal logic, than 8th graders of 20 years ago.
This in turn leads to lower comprehension levels which then requires much
more verbose text to get across the same point that would have been grasped
easily a couple of decades ago.
>IMHO that 2.25 inch thick manual is plenty to start with.
Oh, don't get me wrong, there's still a wealth of information in the
Handbook. I just find it a less usable reference than in earlier years.
As an example of what I consider a good handbook, I'd recommend the
_Bosch Automotive Handbook_. It's clear, concise, and complete in a
2.54 cm thick pocket book. The important concepts, data, and forumlae
needed for effective automotive design are all in there. And they are
easily accessed thanks to excellent organization, indexing, and layout.
A radio handbook as well written and edited need be no larger.
With our current Handbook, I find myself having to apply random searches
to access particular information, and then having to slog through too
much verbage to get to the point. And despite all that verbage, fundamental
questions go begging. For example, nowhere in the current Handbook will you
find a coherent explanation of *why* an antenna radiates, though there's a
chapter on antennas. I'd say that's pretty fundamental to amateur radio
wouldn't you? Maxwell deserves better, and so do we.
Gary
--
Gary Coffman KE4ZV | I kill you, | gatech!wa4mei!ke4zv!gary
Destructive Testing Systems | You kill me, | uunet!rsiatl!ke4zv!gary
534 Shannon Way | We're the Manson Family | emory!kd4nc!ke4zv!gary
Lawrenceville, GA 30244 | -sorry Barney |
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End of Info-Hams Digest V93 #1459
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