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- Date: Mon, 7 Mar 94 11:42:56 PST
- 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 #258
- To: Info-Hams
-
-
- Info-Hams Digest Mon, 7 Mar 94 Volume 94 : Issue 258
-
- Today's Topics:
- 400 Hz xtal ladder filter, help. (2 msgs)
- ARRL--->Online Repeater directory
- Honda ignition recall - now NOISE!!
- IMPORTANT NOTICE
- IPS Daily Report 05 03 94
- Kep data and INFO
- Keyboards at testing sessions
- Mini antenna response summary
- Print up your own log sheet(s)
- PY0FM and 6Y5IC
- Shuttle Retransmissions
- TS830M + CW narrow. Possible?
-
- 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: Mon, 7 Mar 1994 02:51:55 GMT
- From: ihnp4.ucsd.edu!agate!howland.reston.ans.net!newsserver.jvnc.net!raffles.technet.sg!ntuix!ntuvax.ntu.ac.sg!asirene@network.ucsd.edu
- Subject: 400 Hz xtal ladder filter, help.
- To: info-hams@ucsd.edu
-
- Hi,
-
- My homemade QRP xcvr has a 600 Hz BW xtal ladder filter
- consisting of 4 12.0000 MHz xtals. However I still find it hard to
- work pile-ups due to insufficient selectivity. I am planning to
- change it to 400 Hz. Does anyone know how much improvement I can
- expect to see? Also, how can this be done in the easiest way? Do
- I need to add xtal stages or just change to capacitor values?
-
- 72 es 73,
- Daniel
-
- ------------------------------
-
- Date: Mon, 7 Mar 1994 14:02:33 GMT
- From: ihnp4.ucsd.edu!usc!howland.reston.ans.net!news.intercon.com!psinntp!psinntp!psinntp!arrl.org!zlau@network.ucsd.edu
- Subject: 400 Hz xtal ladder filter, help.
- To: info-hams@ucsd.edu
-
- asirene@ntuvax.ntu.ac.sg wrote:
- : Hi,
-
- : My homemade QRP xcvr has a 600 Hz BW xtal ladder filter
- : consisting of 4 12.0000 MHz xtals. However I still find it hard to
- : work pile-ups due to insufficient selectivity. I am planning to
- : change it to 400 Hz. Does anyone know how much improvement I can
- : expect to see? Also, how can this be done in the easiest way? Do
- : I need to add xtal stages or just change to capacitor values?
-
- You probably won't see any improvement in the pileups. I am
- assuming that lots of stations want to work Singapore (9V1 for
- DX types). Problem is, most are probably calling on the same
- frequency (within 100 Hz), so a tighter filter won't help.
-
- What will help is to have an RIT control and continually vary
- your frequency receive frequency over a narrow frequency range,
- perhaps a kHz or two.
-
- However, 12 MHz ECS clock crystals sold by Digi-Key do make
- nice Cohn filters. Use 3 crystals and 470 pF capacitors.
- The input inpedance and output impedance just happen to be
- close to 50 ohms. (Some people just get lucky). Cascading
- two of them, I got a 3 dB BW of 379 Hz and a 6 dB BW of 427
- Hz.
-
- Finally, since you asked, adding more filters will improve the
- skirt selectivity, making stations out of the passband weaker.
- 4 crystals is probably OK for a CW rig, though I use 6 in one
- rig and 7 in another. Increasing the capacitor values will
- decrease the bandwidth, but will also decrease the impedance.
- Impedance matching is important to maintain the proper filter
- shape.
-
-
-
- --
- Zack Lau KH6CP/1 2 way QRP WAS
- 8 States on 10 GHz
- Internet: zlau@arrl.org 10 grids on 2304 MHz
-
- ------------------------------
-
- Date: 2 Mar 94 20:09:07 GMT
- From: digex.net!digex.net!not-for-mail@uunet.uu.net
- Subject: ARRL--->Online Repeater directory
- To: info-hams@ucsd.edu
-
- sbaker@umassmed.UMMED.EDU (Stephen Baker) writes:
- >for such a directory, (maps aside). I wonder if they have priviledged access to
- >this information
-
- These and the other questions you raise are answered in other
- posts.
-
- --
-
- rec.nude: your exit to good living along the Information Toll Road.
- finger bote@access.digex.net for PGP key and an operator will help you.
- Only 32 days until Opening Day!
-
- ------------------------------
-
- Date: Mon, 7 Mar 1994 15:12:20 GMT
- From: ihnp4.ucsd.edu!usc!howland.reston.ans.net!europa.eng.gtefsd.com!ulowell!wang!news@network.ucsd.edu
- Subject: Honda ignition recall - now NOISE!!
- To: info-hams@ucsd.edu
-
- baxter@kuhub.cc.ukans.edu (Kirk Baxter) writes:
-
- >I had this recall work done on my car a couple of weeks ago, and now have
- >terrible ignition noise on 2 meters and 440.
-
- My condolences. As the owner of a fuel-injected 89 Accord, I've been living
- with
- this same problem for 5 years. Your posting was a big help because it points
- the
- finger at the igniter. I've tried ferrites on cables and grounding the hood
- to the
- body with little effect. Now I have something else to work on :-).
-
- According to my shop manual and electrical manual, the igniter is a
- solid-state module, mounted on the distributor, which acts to control current
- in the primary of the ignition coil. In other words, it is the solid-state
- equivalent of breaker points.
-
- I can only assume that your new module has sharper switching edges or a higher
- breakdown voltage than the old one and is creating more RFI because of this.
- There is a suppression capacitor in the circuit, but it has quite long leads.
- In fact
- the coil primary circuit on my car runs from the coil to the distributor and is
- separated by about 2 feet of cable. Probably makes a fine antenna. Ferrites
- on
- the cable didn't seem to help, but I'll probably try it again. This is not a
- piece of
- circuit I want to mess with very much. Placing additional capacitors and such
- in the circuit might lead to poor ignition performance or igniter failure.
-
- One piece of good news is that the interference is awful just after a major
- tune-up and fades gradually over the next month to a much lower level.
- Perhaps they replaced the igniter as part of some of my tune-ups.
- I'll have to pull my service slips and check them.
- My guess is the igniter degrades with time either from the high temperatures
- or the high voltages. With any luck you will also encounter this phenomenon.
-
- Ron
-
- ------------------------------
-
- Date: 2 Mar 94 13:19:04 GMT
- From: agate!howland.reston.ans.net!europa.eng.gtefsd.com!library.ucla.edu!csulb.edu!paris.ics.uci.edu!news.claremont.edu!kaiwan.com!wetware!spunky.RedBrick.COM!psinntp!psinntp!laidbak!tellab5!jwa@
- Subject: IMPORTANT NOTICE
- To: info-hams@ucsd.edu
-
- 3-2-94
-
- CORRECTIONS
-
- In the March 94 issue of QST "Packet Perspective" Stan Horzepa
- WA1LOU wrote an article about the Hamblaster.
-
- I would like to make this correction
-
- The Address should have been
-
- Jack Albert (WA9FVP)
- 203 York Pl.
- New Lenox, Il
- 60451
-
- Ph (815)-723-6564
-
-
- The address in my signature file (below) is my work QTH.
-
- Tellabs Operations Inc. does not manufacture and
- is not involved with the research and development
- of the Hamblaster.
-
-
-
- All inquires should be sent to the address above.
-
- ---
-
-
- Jack Albert WA9FVP Fellow Radio Hacker
- Tele (708) 378-6201
- Tellabs Operations, Inc. FAX (708) 378-6721
- 1000 Remington Blvd. jwa@tellabs.com
- Bolingbrook, IL 60440
-
- ------------------------------
-
- Date: Sat, 5 Mar 1994 23:25:13 GMT
- From: ihnp4.ucsd.edu!swrinde!sgiblab!munnari.oz.au!newshost.anu.edu.au!sserve!usage!metro!ipso!rwc@network.ucsd.edu
- Subject: IPS Daily Report 05 03 94
- To: info-hams@ucsd.edu
-
- IPS RADIO AND SPACE SERVICES AUSTRALIA
- Daily Solar And Geophysical Report
- Issued at 2330 UT 5 March 1994
- Summary for 5 March and Forecast up to 8 March
- IPS Warning 7 was issued on 02 March and is still current.
- -----------------------------------------------------------
-
- 1A. SOLAR SUMMARY
- Activity: very low
-
- Flares: none.
-
- Observed 10.7 cm flux/Equivalent Sunspot Number : 096/043
-
- 1B. SOLAR FORECAST
- 06 March 07 March 08 March
- Activity Very low Very low Very low
- Fadeouts None expected None expected None expected
-
- Forecast 10.7 cm flux/Equivalent Sunspot Number : 095/041
-
- 1C. SOLAR COMMENT
- None.
- -----------------------------------------------------------
-
- 2A. MAGNETIC SUMMARY
- Geomagnetic field at Learmonth : quiet until last period when active
- levels were observed.
-
- Estimated Indices : A K Observed A Index 4 March
- Learmonth 09 3222 1124
- Fredericksburg 05 03
- Planetary 08 04
-
-
- 2B. MAGNETIC FORECAST
- DATE Ap CONDITIONS
- 06 Mar 30 Active to minor storm.
- 07 Mar 30 Active to minor storm.
- 08 Mar 20 Active.
-
- 2C. MAGNETIC COMMENT
- The forecast increase in activity did not occurr, however
- an increase in activity is still expected over the next few days.
-
- 3A. GLOBAL HF PROPAGATION SUMMARY
- LATITUDE BAND
- DATE LOW MIDDLE HIGH
- 05 Mar normal normal normal
- PCA Event : None.
- 3B. GLOBAL HF PROPAGATION FORECAST
- LATITUDE BAND
- DATE LOW MIDDLE HIGH
- 06 Mar fair poor poor
- 07 Mar fair poor poor
- 08 Mar normal fair poor
- 3C. GLOBAL HF PROPAGATION COMMENT
- Forecast degradations did not eventuate, However
- degraded HF comms are still expected over the next few days.
-
- -----------------------------------------------------------
-
- 4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY
- MUFs at Sydney were about 15% above predicted monthly values
-
- T index: 76
-
- 4B. AUSTRALIAN REGION IONOSPHERIC FORECAST
- DATE T-index MUFs
- 06 Mar 60 About 15% above predicted monthly values.
- 07 Mar 30 Near predicted monthly values.
- 08 Mar 30 Near predicted monthly values.
-
- Predicted Monthly T Index for March is 40.
-
- 4C. AUSTRALIAN REGION COMMENT
- Expected degraded HF comms did not eventuate, however
- it is still expected that conditions will become
- degraded over the next few days.
- --
- IPS Regional Warning Centre, Sydney |IPS Radio and Space Services
- email: rwc@ips.oz.au |PO Box 5606
- tel: +61 2 4148329 |West Chatswood NSW 2057
- fax: +61 2 4148331 |AUSTRALIA
-
- ------------------------------
-
- Date: 7 Mar 94 17:55:18 GMT
- From: news-mail-gateway@ucsd.edu
- Subject: Kep data and INFO
- To: info-hams@ucsd.edu
-
- Haven't seen any Keperlerian (?) data and information on current
- Shuttle flight. Could someone provide to the net?
- Tks,
- Larry Carr
- carrl@gordon-tsd1.army.mil
-
- ------------------------------
-
- Date: 7 Mar 1994 15:09:55 GMT
- From: ihnp4.ucsd.edu!usc!howland.reston.ans.net!noc.near.net!jericho.mc.com!fugu!levine@network.ucsd.edu
- Subject: Keyboards at testing sessions
- To: info-hams@ucsd.edu
-
- In article As4@cbnewsm.cb.att.com, hellman@cbnewsm.cb.att.com (eric.s.hellman) writes:
- -->In article <2MAR199408091550@nssdca.gsfc.nasa.gov>, stocker@nssdca.gsfc.nasa.gov (ERICH FRANZ STOCKER) writes:
-
- -->At our VE sessions we always check the copy whenever the applicant fails
- -->to answer 7 questions correctly. We once has a case where someone got only
- -->6 correct but had sufficient copy to pass and had correctly copied the
- -->answer to one of the questions not answered! There is nothing about this
- -->test which implies _______ (fill in the blank).
- -->Now don't get me started about the multiple guess test.
- -->
- -->Shel Darack WA2UBK dara@physics.att.com
- -->
-
- We do the same, however in all fairness we believe that if the
- applicant wants to submit for 1 minute solid copy, he must do
- so *before* getting the multiple choice test. This is because
- many words in the exam answers are in the text (obviously).
- The candidate can then back-fill his copy sheet. Then he
- really did not *copy* that stuff from the cw qso.
-
- Once he gets the multiple choice test sheet, I feel that the
- candidate should not be allowed to submit his sheet for 1
- minute copy. In the case of 5wpm, there are only 25 words
- in the 5 min QSO.(+/-) When you give him the test sheet, you
- just gave him at least 10 of the words!
-
-
- ---
- ------------------------------------------------------------
- Bob Levine KD1GG 7J1AIS VK2GYN formerly KA1JFP
- levine@mc.com <--Internet email Phone(508) 256-1300 x247
- kd1gg@wa1phy.ma <--Packet Mail FAX(508) 256-3599
- ------------------------------------------------------------
-
- ------------------------------
-
- Date: Mon, 7 Mar 1994 13:47:49 GMT
- From: netcomsv!netcom.com!wy1z@decwrl.dec.com
- Subject: Mini antenna response summary
- To: info-hams@ucsd.edu
-
- Thanks for all the suggestions.
-
- The overwelming response was to get the Comet CH-32 Mini antenna (1.75 ").
-
- Price is ~$34
-
- My check went into the mail this morning to HRO.
-
- Again, thanks.
-
- Scott
-
-
- --
- ===============================================================================
- | Scott Ehrlich Amateur Radio: wy1z AMPRnet: wy1z@wa1phy.ampr.org |
- | Internet: wy1z@neu.edu BITnet: wy1z@NUHUB AX.25: wy1z@wa1phy.ma.usa.na |
- |-----------------------------------------------------------------------------|
- | Maintainer of the Boston Amateur Radio Club hamradio FTP area on |
- | the World - ftp.std.com pub/hamradio |
- ===============================================================================
-
- ------------------------------
-
- Date: 7 Mar 94 14:08:48 GMT
- From: nprdc!ihnp4.ucsd.edu!library.ucla.edu!europa.eng.gtefsd.com!ulowell!wang!dbushong@network.ucsd.edu
- Subject: Print up your own log sheet(s)
- To: info-hams@ucsd.edu
-
- The following Word for Windows document is a one-page log sheet that
- you can use in case you use up the last page of your log and need one
- in a hurry, or in case you don't log QSOs often enough to justify
- purchasing a logbook.
-
- Feel free to customize it for your needs.
-
- 73,
- Dave KZ1O
-
- begin 664 logpage.zip
- M4$L#!!0 ( 'E(9QS(H@6$PP0 .\1 + 3$]'4$%'12Y$3T/MV ML
- M%$4<P.'_[K5<6[A:*X'R")E4Q(KE> :P0=("P0KUP+820@BPM=O>P=UMO3M:
- M2@A60J!B!4(J$D*0$!Y&?. C:GP@46.(&M*(,02,:<00HD0(*** YV_W[H0#
- M BA&%)WM-SLSW;WLSLS.SNS!K8-D<&EVAA &R?G0HHEL<XD<NU4N"0-TN7K(
- M$VE.QLUY=L'EXUQ93JQDNU-R^3A'7B8N3);L(RZ2,T[ZC\6ZG'/25XK[21_N
- M>(1,(=[DI%-7FPB)DC[)6M'%)9IDRI\/%5:]BOI-,Z;JK(@J"QDQ<WY$51JU
- M 4M5Q8Q8(&"%U?BRBHJJ^^_SJ508JLK"S4U^,V*JLD;3J\J-4,QJ"A<K7[D:
- M,FKXJ.'*D]-L&I&2H??,GCW;DU,=")D>]W@C&(P&ZL,>]\2(^8C'_8!5:RJ/
- MNVIPI:JLJO:X?89]U(/5Y415%1QOA4)F.!;UN/_?;NB6T_,Q31[7GNB\MZUC
- M\),=^LH.?=5.;76'?OWM;S_G6_$"#B2?^5TX\],9.2;_AW]WR!5GJ.Z>R&6(
- M6Q=[I"]RB[/O)YDMR78_C*,XA;-P<6(WY*,G^NJ)<;\( U$,+X9@&$9@)$:C
- M!&,P%J48APF8B'),0@5\F(I*5&,:IF,&9F(6YJ &/Y_\[M#!?9]\\/:K.^9>
- M,<5ME2;OOD#KI;4'9;TEV>WQ-M?P+'?7C;E=;YO<RZ=VW+YBI$AV<OO+4]2O
- MEIG?J65JW3NU LW)M^KI^;N[I.?K,M/S3[G2\^]>=/XY+3V_]Z+C"R_(\X;2
- M2D=WVCGIDDP[_[O+KMM:U,&/N0@BC 9$$$,C%F A%F$Q6K $2[$,K5B!-JS$
- M:JQ!.]9B'=9C S9B$S9C"[;A63R'Y_$B=N(5O(;7\2;>PCO8A??>>&G[,T^O
- M6OYHT[6D[![Q3VN7&]Y3O78][L;[^! ?80\^QJ?8BPY\AL_Q!?;C +[$5^C$
- MU_@&AW$$W^(HOL=QG, /.(73^ 5G\:L]0/&^T9&!+LA"#KHA%WG(1W?T0 %Z
- MX_3Q(YV)%KZ65*K];ZKVN]X>[;7KL2_Z0:$0_3$ 11B(8G@Q!,,P B,Q&B48
- M@[$HQ3A,P$248Q(JX,-45*(:TS =,S 3LS '-:A%'?R8BR#":$ $,30FVW]_
- MQY[=B1:^6BK5_C=5^UUOC_;:];@ "[$(B]&")5B*96C%"K1A)59C#=JQ%NNP
- M'ANP$9NP&5M<B?GDZ>.ID3@MU2!_0TA[V_WWQO>K]:^"/'MR&$\/$B^\N"B>
- MRR,MJ9ED=D:\SR5'N)/W&L\G.B8GY"3['R6>MCD'\-8X_R$AS^DB=NBO)TJR
- M=.:?+*OUQ%O!F<+:TU1[6:([J9KD!*!W<B"P?\'%C#:3YG;S<2"_A]@KGJCR
- MF4VJT@H98<GNH5<UAVJLH&0-D+)(P CRJ[?P8VWLVYP:DY;^3BIU+87V\M[5
- M*HD7H-^^*!E?<N@.6VKQS^08Y5KB*NU/!ER5O:9O,.I-9TGO-T+*:C C1LR*
- M1$4>JO8'HHH_0T4#X?J@F3C2JJ,@:-4[GP**G1,?]IM&0W0>'P2BJLEOJ5HK
- M?&=,-1GAF(I9JF9^<^*,&LN:Y\V?8#2::MS\J-\*UQ>KR3.&3NEV8='OC\-O
- M4$L! A0 % @ >4AG',BB!83#! [Q$ L @
- B $Q/1U!!1T4N1$]#4$L%!@ ! $ .0 .P$
-
- end
-
- --
- Dave Bushong, Wang Laboratories, Inc.
-
- ------------------------------
-
- Date: 7 Mar 1994 14:25:48 GMT
- From: ihnp4.ucsd.edu!library.ucla.edu!europa.eng.gtefsd.com!news.umbc.edu!haven.umd.edu!cville-srv.wam.umd.edu!ham@network.ucsd.edu
- Subject: PY0FM and 6Y5IC
- To: info-hams@ucsd.edu
-
- Worked PY0FM and 6Y5IC yesterday during ARRL SSB DX contest. Anyone
- know:
-
- 1) PY0FM - which island group, and how to get a card?
- 2) 6Y5IC - any special route to get a card?
-
- Thanks everybody!
-
- --
- 73, _________ _________ The
- \ / Long Original
- Scott Rosenfeld Amateur Radio NF3I Burtonsville, MD | Live $5.00
- WAC-CW/SSB WAS DXCC - 125 QSLed on dipoles __________| Dipoles! Antenna!
-
- ------------------------------
-
- Date: 7 Mar 1994 07:42 EDT
- From: ihnp4.ucsd.edu!library.ucla.edu!europa.eng.gtefsd.com!paladin.american.edu!zombie.ncsc.mil!cs.umd.edu!news.gsfc.nasa.gov!nssdca.gsfc.nasa.gov!stocker@network.ucsd.edu
- Subject: Shuttle Retransmissions
- To: info-hams@ucsd.edu
-
- As you may know GARC volunteers undertake to retransmit Shuttle Ground
- transmissions. Please note the following:
-
- INTERESTED IN SHUTTLE TRANSMISSIONS
- The Goddard Amateur Radio Club (GARC)invites interested people to tune in to
- Shuttle transmissions. As a public service to the Amateur radio community,
- the GARC retransmits space shuttle air-to-ground
- communications. During the STS-62 mission, Amateur radio operators, shortwave
- listeners, and those individuals with scanners can listen to these
- communications on the following HF (single side band) and VHF frequencies:
-
- 3.860 MHz (lower sideband)
- 7.185 MHz (lower sideband)
- 14.295 MHz (upper sideband)
- 21.395 Mhz (upper sideband)
- 28.650 Mhz (upper sideband)
-
- and
-
- 147.45 Mhz (FM) Local DC Metro Area
-
- 73 de N3OXM
- Erich
- GARC Public Info Coord
-
- ------------------------------
-
- Date: 7 Mar 94 11:58:59 GMT
- From: news-mail-gateway@ucsd.edu
- Subject: TS830M + CW narrow. Possible?
- To: info-hams@ucsd.edu
-
- Hello,
- I'm wondering if anybody can help me. I'd like to install a CW narrow filter
- on a Kenwood TS830M although the factory says that it's not possible.
- I don't care doing it in the hard way even putting a switch in the rear
- panel or doing some mods on the board itself but I want to hear from
- someone who attempted this before to be sure that it's feasible since I
- still have to buy the rig.
- The more info you guys can give me the better it is.
-
- Thank you!
- Marco
- aa1iu/ix1iiy
-
- --
- -------------------------------------------------------------------------------
- Marco Fassiotto | Voice : +39-125-524650 | ham : ix1iiy/aa1iu
- System Software Engineer | Fax : +39-125-524294 | pkt : ix1iiy@ik1brm
- Laser Printers | Data: +39-125-524374 ------------------------
- Olivetti | Internet : fax@sparc4.ico.olivetti.com
- | fax%sparc4@olivetti.com
- -------------------------------------------------------------------------------
-
- ------------------------------
-
- Date: Mon, 7 Mar 1994 06:39:53 GMT
- From: ihnp4.ucsd.edu!swrinde!cs.utexas.edu!uwm.edu!msuinfo!harbinger.cc.monash.edu.au!bruce.cs.monash.edu.au!trlluna!titan!pcies4.trl.OZ.AU!drew@network.ucsd.edu
- To: info-hams@ucsd.edu
-
- References <CLMqI7.Bvn@murdoch.acc.Virginia.EDU>, <9402271401591.gilbaronw0mn.DLITE@delphi.com>, <2l3360$4jr@news.acns.nwu.edu>du.a
- Subject : Re: Electric Fence RFI
-
- In article <2l3360$4jr@news.acns.nwu.edu> lapin@casbah.acns.nwu.edu (Gregory Lapin) writes:
- >From: lapin@casbah.acns.nwu.edu (Gregory Lapin)
- >Subject: Re: Electric Fence RFI
- >Date: 2 Mar 1994 22:15:28 GMT
- >In article <9402271401591.gilbaronw0mn.DLITE@delphi.com>,
- >Gilbert Baron <gilbaronw0mn@delphi.com> wrote:
- >>>I've got some bad interference on 80 through 10
- >>>meter bands from an electric fence about 500
- >>>feet away. The effect is very sharp clicks
- >>>about 3-4 per second. Analog noise blanker
- >>>works some but not 100%.
- >>>
- >>>Anyone have any cures?
- >>>
- >>>Tnx,
- >>>Ned Hamilton, AB6FI
- >>>
- >>
- >>Well, if you ground the fence, case closed.
- >>
- >> Gil Baron, El Baron Rojo, W0MN Rochester,MN
- >> "Bailar es Vivir"
- >> PGP2.3 key at key servers or upon request
- >>
- >
- >Just my curiousity about the fence: Are we talking about a real
- >electrified fence or is this what is commonly called an "invisible fence"
- >that send out a weak rf signal, received by a pet's collar to create a
- >shock when the pet tries to cross the "fence"?
- >
- >Greg KD9AZ
-
- Grounding the fence may not help. An electric fence (of the conventional
- kind) can be thought of as a capacitor which must be kept charged. The "pop"
- noise (about every second) that we sometimes hear is the harmonic energy in
- the steep waveform needed to charge the capacitance of the fence wire. If
- there is a fault (such as grass or other material touching the wire) the
- thing will radiate the more effectively.
-
- "Rural" hams know about this problem.
-
-
- 73, Drew, VK3XU
-
- ------------------------------
-
- Date: 2 Mar 94 20:03:55 GMT
- From: digex.net!digex.net!not-for-mail@uunet.uu.net
- To: info-hams@ucsd.edu
-
- References <1994Feb27.133807.12203@ke4zv.atl.ga.us>, <rcrw90-280294091343@waters.corp.mot.com.corp.mot.com>, <YEE.94Feb28192017@mipgsun.mipg.upenn.edu>
- Subject : Re: On-line Repeater Directory
-
- yee@mipg.upenn.edu (Conway Yee) writes:
- >The various threads on this issue have been highly supportive of the
- >idea of the online repeater directory. For this, I am grateful since
- >there are people appreciate the work that the volunteers and I have
- >put into the project. If the ARRL is listening, it can readily tell
- >the attitudes of most hams here. Further, a number of more
- >industrious hams are supplementing my efforts to the league and I am
- >grateful for their assistance. I am still hopeful of a satisfactory
- >resolution to this issue. As of this moment, I have not heard any
- >further news from the league itself.
-
- (I don't know why I am jumping into this morass, but...)
-
- Conway Yee and I discussed this subject via email some weeks ago.
-
- This current discussion seems to be based on conjecture
- and speculation.
-
- The ARRL is not the source of the repeater information.
- The area coordinators are the sources of the compiled
- information. Having seen the data that is sent to
- the ARRL, I can confidently say that the effort
- of Bart Jahnke at the ARRL is minimized, since the regional
- coordinators must supply the data to the ARRL in
- a format almost identical to that which appears
- in the Repeater Directory. The ARRL simply appends
- the data together and voila! a Repeater Directory.
-
- Further, since I am now designing and implementing a computerized
- information system for T-MARC (welcome to the 1980s!)
- I am happy to report that T-MARC is implementing
- an "ombudsman" to verify the accuracy of its own data.
- The ombudsman will take the list of repeaters and
- verify that each one is on the air. This is where
- the "time and effort" come in, and it is a good thing
- since frequencies are getting scarce in the Washington
- Baltimore area.
-
- So, if an on-line database is built from coordinators'
- data, then it is the compilers of that database
- who should be on the warpath, not the ARRL. (Ironic, isn't it?)
- But, I thought that the whole idea of Conway's database
- was that net.hams would supply the empirical data,
- so it would be home-grown. Maybe I'm confused, too?
-
- Also, computerization will make it easier to present
- the data in useful ways, so that John Q. Ham can look
- up repeaters by frequency, by location, or by callsign
- to name a few.
-
- I still think that accuracy is crucial, since inaccurate
- data is worse than no data at all.
-
- So, why are we still jabbering about this?
- Don't say nothin, jes do it!
-
- --
-
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-
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-
- End of Info-Hams Digest V94 #258
- ******************************
-