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1994-11-13
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Date: Wed, 10 Aug 94 04:30:08 PDT
From: Info-Hams Mailing List and Newsgroup <info-hams@ucsd.edu>
Errors-To: Info-Hams-Errors@UCSD.Edu
Reply-To: Info-Hams@UCSD.Edu
Precedence: Bulk
Subject: Info-Hams Digest V94 #893
To: Info-Hams
Info-Hams Digest Wed, 10 Aug 94 Volume 94 : Issue 893
Today's Topics:
cell sites
Crossband repeating rigs & auto IDers
Daily Summary of Solar Geophysical Activity for 27 July
Help! How to Improve my CW Speed? (2 msgs)
Icom 735 Production Run
Inputs on Hallicrafters SR-2000 xvcr needed
IPS Daily Report - 08 August 94
Need some help with the design of an Operational Amplifier
Send Replies or notes for publication to: <Info-Hams@UCSD.Edu>
Send subscription requests to: <Info-Hams-REQUEST@UCSD.Edu>
Problems you can't solve otherwise to brian@ucsd.edu.
Archives of past issues of the Info-Hams Digest are available
(by FTP only) from UCSD.Edu in directory "mailarchives/info-hams".
We trust that readers are intelligent enough to realize that all text
herein consists of personal comments and does not represent the official
policies or positions of any party. Your mileage may vary. So there.
----------------------------------------------------------------------
Date: 10 Aug 1994 02:30:11 GMT
From: ihnp4.ucsd.edu!agate!howland.reston.ans.net!vixen.cso.uiuc.edu!sdd.hp.com!hpscit.sc.hp.com!cupnews0.cup.hp.com!cupnews2.cup.hp.com!bmp@network.ucsd.edu
Subject: cell sites
To: info-hams@ucsd.edu
yctcsl@cerfnet.com wrote:
: Does anyone have any info regarding the rate paid by PacBell (AirTouch) for
: establishing a cell site lease. The offers been made however I'd be interested to
: find out just what being paid these days.
I'd negotiate for a phone or two with free airtime as part of the deal.
Brian
------------------------------
Date: 10 Aug 1994 00:15:06 GMT
From: spool.mu.edu!agate!kennish@uunet.uu.net
Subject: Crossband repeating rigs & auto IDers
To: info-hams@ucsd.edu
In article <776461176.85snx@n2ayj.overleaf.com>,
Stan Olochwoszcz N2AYJ <n2ayj@n2ayj.overleaf.com> wrote:
>In article <32872b$dls@news.duke.edu> jbs@duke.edu writes:
>Once upon a time repeaters didn't auto ID. If WX2ABC sets up a rig
>to do crossband, it's a repeater, right? I don't know anything in the
>rules that makes "N2AYJ, WX2ABC repeat" an invalid ID. You've ID'ed,
>and the repeater's been ID'ed.
>To my way o' tinkin', no problem, mon. :{)
This would be legal, if you could get it to repeat both ways. The
common application of xband repeat is this. You have a dual band
mobile and a 440 HT. You want to go fishing. Park car, and set up
mobile to do x-band repeat as follows:
In: 446.0 (for example) Out: 2m repeater's input frequency
In: 2m repeater's output frequency Out: 446.0
OK, so now you have a 440 extender you can take down to the canyon where
the fish are...
If you call out to your 2m repeater saying this is N1ABC, N1ABC repeater,
that covers the first side of the link. But unless you have
people cooperate on the other side, the 2m->440 side doesn't get
ID'd, and that's the problem. You have to convince your
buddies (and all those that aren't talking to you, but are on
the 2m repeater) to ID your mobile for you, every 10 mins there
is activity.
Is this a real problem? Not, unless you are gonna split hairs about
rules. But it IS illegal. The bigger problem with X-band are the
bozos out there that don't know how to pick the right frequencies.
The example given above is somewhat risky, since you are xbanding
onto a repeater input.
==ken
------------------------------
Date: Mon, 8 Aug 1994 16:11:49 MDT
From: ihnp4.ucsd.edu!galaxy.ucr.edu!library.ucla.edu!news.mic.ucla.edu!unixg.ubc.ca!quartz.ucs.ualberta.ca!alberta!ve6mgs!usenet@network.ucsd.edu
Subject: Daily Summary of Solar Geophysical Activity for 27 July
To: info-hams@ucsd.edu
/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
DAILY SUMMARY OF SOLAR GEOPHYSICAL ACTIVITY
27 JULY, 1994
/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
(Based In-Part On SESC Observational Data)
SOLAR AND GEOPHYSICAL ACTIVITY INDICES FOR 27 JULY, 1994
--------------------------------------------------------
!!BEGIN!! (1.0) S.T.D. Solar Geophysical Data Broadcast for DAY 208, 07/27/94
10.7 FLUX=074.3 90-AVG=079 SSN=022 BKI=2421 1223 BAI=009
BGND-XRAY=A1.8 FLU1=3.4E+05 FLU10=1.4E+04 PKI=3522 1223 PAI=011
BOU-DEV=***,056,012,009,008,010,010,028 DEV-AVG=016 NT SWF=00:000
XRAY-MAX= A5.6 @ 0124UT XRAY-MIN= A1.4 @ 2036UT XRAY-AVG= A2.4
NEUTN-MAX= +003% @ 1015UT NEUTN-MIN= -002% @ 2130UT NEUTN-AVG= +0.0%
PCA-MAX= +0.1DB @ 2230UT PCA-MIN= -0.3DB @ 1615UT PCA-AVG= +0.0DB
BOUTF-MAX=55254NT @ 0012UT BOUTF-MIN=55219NT @ 1656UT BOUTF-AVG=55239NT
GOES7-MAX=P:+000NT@ 0000UT GOES7-MIN=N:+000NT@ 0000UT G7-AVG=+073,+000,+000
GOES6-MAX=P:+145NT@ 1915UT GOES6-MIN=N:-040NT@ 2248UT G6-AVG=+101,+033,-015
FLUXFCST=STD:075,075,078;SESC:075,075,078 BAI/PAI-FCST=010,010,010/010,010,010
KFCST=2234 1222 2234 1222 27DAY-AP=017,022 27DAY-KP=3444 3333 4454 3334
WARNINGS=
ALERTS=
!!END-DATA!!
NOTE: The Effective Sunspot Number for 26 JUL 94 was 22.0.
The Full Kp Indices for 26 JUL 94 are: 3- 5- 2- 2- 1+ 2- 2o 3-
The 3-Hr Ap Indices for 26 JUL 94 are: 11 39 6 6 5 7 8 14
Greater than 2 MeV Electron Fluence for 27 JUL is: 7.2E+06
SYNOPSIS OF ACTIVITY
--------------------
Solar activity was very low.
Solar activity forecast: solar activity is expected to be
very low.
STD: An eruptive prominence was observed near S36 on the
west limb between 06:52 and 07:19 UTC.
The geomagnetic field was quiet for most of the past 24
hours. An active to minor storm period occurred at many
stations from 27/0300-0600Z.
Geophysical activity forecast: the geomagnetic field is
expected to be quiet to unsettled.
Event probabilities 28 jul-30 jul
Class M 01/01/01
Class X 01/01/01
Proton 01/01/01
PCAF Green
Geomagnetic activity probabilities 28 jul-30 jul
A. Middle Latitudes
Active 20/20/20
Minor Storm 10/10/10
Major-Severe Storm 05/05/05
B. High Latitudes
Active 25/25/25
Minor Storm 10/10/10
Major-Severe Storm 05/05/05
HF propagation conditions were normal over all regions.
A few high-latitude stations may have seen a brief period of
minor signal degradation coincident with the period of minor
geomagnetic storming between 03:00 and 06:00 UTC. Near-normal
propagation will continue over the next 3 days inclusive.
COPIES OF JOINT USAF/NOAA SESC SOLAR GEOPHYSICAL REPORTS
========================================================
REGIONS WITH SUNSPOTS. LOCATIONS VALID AT 27/2400Z JULY
-------------------------------------------------------
NMBR LOCATION LO AREA Z LL NN MAG TYPE
7757 N11W73 334 0150 HSX 02 001 ALPHA
7758 S14W56 317 0000 AXX 00 001 ALPHA
REGIONS DUE TO RETURN 28 JULY TO 30 JULY
NMBR LAT LO
7750 S17 168
7749 S09 166
7746 N11 157
7747 S16 151
LISTING OF SOLAR ENERGETIC EVENTS FOR 27 JULY, 1994
---------------------------------------------------
BEGIN MAX END RGN LOC XRAY OP 245MHZ 10CM SWEEP
NONE
POSSIBLE CORONAL MASS EJECTION EVENTS FOR 27 JULY, 1994
-------------------------------------------------------
BEGIN MAX END LOCATION TYPE SIZE DUR II IV
27/ 0652 0719 S36W90 EPL
INFERRED CORONAL HOLES. LOCATIONS VALID AT 27/2400Z
---------------------------------------------------
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
------ ---- ---- ---- ---- -- ------ ------ --------- --------- ---------
NO EVENTS OBSERVED.
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 0 000 ( 0.0)
Total Events: 000 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: 9 Aug 1994 20:42:28 -0500
From: ihnp4.ucsd.edu!dog.ee.lbl.gov!agate!howland.reston.ans.net!cs.utexas.edu!geraldo.cc.utexas.edu!curly.cc.utexas.edu!not-for-mail@network.ucsd.edu
Subject: Help! How to Improve my CW Speed?
To: info-hams@ucsd.edu
In article <323232$2ql@scunix2.harvard.edu>,
Yuzuru Suzuki <ys@isr.harvard.edu> wrote:
>I posted my article a couple of days ago, and Jim, WA6SDN, thought that
>it was a joke. I just wanted to let everyone know that it is not a
>joke, and that I am dead serious! I will summarize my question again.
>
>I am having difficulty going over 30 WPM. I can copy solid at 25 WPM.
I see a lot of sensible commentary has been made, so I will touch on two
things:
When I was starting to play kid baseball, the kids in my neighborhood used
to play a game called "burnout". Burnout was a simple game of catch, except
that you would throw the ball as hard as you could when tossing the ball
back and forth.
When I was starting to play radio, I had a few kids in my ham neighborhood
that I used to play CW burnout with. We would turn up the keyers as fast
as we could manage to send, and wear each other out. Of course, when you
are a kid you have a lot of time to do this kind of thing, but I found it
paid off. If you have one or two friends who have the time and are at a
similar skill level, this would be something to try.
Secondly, I keep hearing this saying "good CW operators eventually learn
to hear words rather than characters when going at high speeds." This
has never been the case for me, or at least it has never felt this way
in my brain. Perhaps this is why I never advanced beyond 65ish WPM. I
only mention this because I don't think it's necessary to "hear words"
to be a competent CW operator.
--Trey, WN4KKN/6
------------------------------
Date: Sat, 6 Aug 1994 17:29:05 GMT
From: agate!howland.reston.ans.net!swrinde!sdd.hp.com!col.hp.com!news.dtc.hp.com!hpscit.sc.hp.com!cupnews0.cup.hp.com!jholly@ames.arpa
Subject: Help! How to improve my CW speed?
To: info-hams@ucsd.edu
Yuzuru Suzuki (ys@isr.harvard.edu) wrote:
: I am a relatively new ham operator. I got my first license in February
: this year. I operate only in CW, and I am trying to improve my CW skills,
: and would like any advice or suggestions. I am having difficulty going
: above 30 WPM. I got W1AW's code proficiency certificate for 25 WPM a
: couple of months ago, but still can not copy solid at 30 WPM. I do not
: participate in any contest, and I am mainly interested in ragchewing.
This is a joke, isn't? I missed the smilely.
73, Jim, WA6SDM
jholly@cup.hp.com
------------------------------
Date: 10 Aug 94 10:37:24 GMT
From: news-mail-gateway@ucsd.edu
Subject: Icom 735 Production Run
To: info-hams@ucsd.edu
As I recall, the 735 was first introduced in late 1985, and was reviewed
(favorably) by QST in January or February 1986. I believe it has been
recently discontinued.
I assume you own a 735 (or why would you be making this inquiry?). I own
one too. Great rig for the money.
73 de KB2PWM
------------------------------
Date: Tue, 9 Aug 1994 10:00:14 GMT
From: ihnp4.ucsd.edu!agate!library.ucla.edu!europa.eng.gtefsd.com!darwin.sura.net!jabba.ess.harris.com!usenet@network.ucsd.edu
Subject: Inputs on Hallicrafters SR-2000 xvcr needed
To: info-hams@ucsd.edu
Good morning to all...
If you have owned or used a Hallicrafters SR-2000 xcvr, I'd like to hear
your impressions of this rig. I can purchase one from an estate sale for a
reasonable amount and would like to get some facts on this unit.
Thanks,
Ray
------------------------------
Date: Mon, 8 Aug 1994 23:43:26 GMT
From: ihnp4.ucsd.edu!galaxy.ucr.edu!library.ucla.edu!agate!msuinfo!harbinger.cc.monash.edu.au!news.cs.su.oz.au!metro!ipso!rwc@network.ucsd.edu
Subject: IPS Daily Report - 08 August 94
To: info-hams@ucsd.edu
SUBJ: IPS DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 08/2330Z AUGUST 1994 BY IPS RADIO AND SPACE SERVICES
FROM THE REGIONAL WARNING CENTRE (RWC), SYDNEY.
SUMMARY FOR 08 AUGUST AND FORECAST FOR 09 AUGUST - 11 AUGUST
-----------------------------------------------------------
1A. SOLAR SUMMARY
Activity: very low
Flares: none.
Observed 10.7 cm flux/Equivalent Sunspot Number : 74/11
GOES satellite data for 07 Aug
Daily Proton Fluence >1 MeV: 9.0E+05
Daily Proton Fluence >10 MeV: 1.4E+04
Daily Electron Fluence >2 MeV: 6.1E+06
X-ray background: A1.9
Fluence (flux accumulation over 24hrs)/ cm2-ster-day.
1B. SOLAR FORECAST
09 Aug 10 Aug 11 Aug
Activity Very low Very low Very low
Fadeouts None expected None expected None expected
Forecast 10.7 cm flux/Equivalent Sunspot Number for 09 Aug: 75/13
-----------------------------------------------------------
2A. MAGNETIC SUMMARY
Geomagnetic field at Learmonth: mostly quiet.
Estimated Indices : A K Observed A Index 07 Aug
Learmonth 6 3221 1212
Fredericksburg 1 4
Planetary 3 3
Observed Kp for 07 Aug: 0010 1111
2B. MAGNETIC FORECAST
DATE Ap CONDITIONS
09 Aug 5 Quiet
10 Aug 25 Unsettled to active, with isolated minor storm levels
possible.
11 Aug 25 Unsettled to active, with isolated minor storm levels
possible.
COMMENT: IPS Geomagnetic Warning 2 was issued on 7 August and is
current for interval 10-12 August.
-----------------------------------------------------------
3A. GLOBAL HF PROPAGATION SUMMARY
LATITUDE BAND
DATE LOW MIDDLE HIGH
08 Aug normal normal normal
PCA Event : None.
3B. GLOBAL HF PROPAGATION FORECAST
LATITUDE BAND
DATE LOW MIDDLE HIGH
09 Aug normal normal normal
10 Aug normal fair poor-fair
11 Aug normal fair poor-fair
-----------------------------------------------------------
4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY
Observed
DATE T-index MUFs at Sydney
08 Aug 27 Near predicted monthly values, apart from
enhancements of 20-50% from 17-20UT.
Predicted Monthly T-index for August: 20
4B. AUSTRALIAN REGION IONOSPHERIC FORECAST
DATE T-index MUFs
09 Aug 25 Near predicted monthly values, with enhancements of
30-50% leading up to local dawn.
10 Aug 30 As for 09 Aug.
11 Aug 30 As for 09 Aug.
COMMENT: Local propagation conditions may be degraded in association
with geomagnetic activity from 10-12 August. MUFs are not expected to
be significantly affected.
--
IPS Regional Warning Centre, Sydney |IPS Radio and Space Services
RWC Duty Forecaster tel: +61 2 4148329 |PO Box 5606
Recorded Message tel: +61 2 4148330 |West Chatswood NSW 2057
email: rwc@ips.oz.au fax: +61 2 4148331 |AUSTRALIA
------------------------------
Date: 9 Aug 94 00:17:46 CDT
From: ihnp4.ucsd.edu!ucsnews!sol.ctr.columbia.edu!howland.reston.ans.net!vixen.cso.uiuc.edu!newsfeed.ksu.ksu.edu!moe.ksu.ksu.edu!kuhub.cc.ukans.edu!christos@network.ucsd.edu
Subject: Need some help with the design of an Operational Amplifier
To: info-hams@ucsd.edu
hello there,
I have a question concerning design of a simple amplifier using
operational amplifiers. I am simply designing a noninverting amplifier with a
gain of 2, that is R1=R2 ( Closed Loop Gain=(1+R2/R1) ). No matter what I apply
to the input of the amp the output always saturates to -11 Volts. Even if no
input is applied the output still gives a -11V.
The voltages that I am applying to the Vcc+ and Vcc- of the op amp are +12V and
-12V respectively. I am using the LM 741 opamp for this application.
Does anybody in this group happen to know what the problem might be?
I would appreciate any relevant response.
Please e-mail.
Thanks in advance
Chris
------------------------------
End of Info-Hams Digest V94 #893
******************************