Date: Wed, 10 Aug 94 04:30:08 PDT From: Info-Hams Mailing List and Newsgroup 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: Send subscription requests to: 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 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 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 ******************************