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- Date: Sat, 13 Aug 94 09:28:50 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 #910
- To: Info-Hams
-
-
- Info-Hams Digest Sat, 13 Aug 94 Volume 94 : Issue 910
-
- Today's Topics:
- ..from an aspiring ham (2 msgs)
- ARLX024 <title>
- Communications Quarterly , was Qs on no code FCC license and Hardware
- Homebrew Global Positioning System (GPS)
- ICOM 3200a MODS?
- In plain English...
- Need some help with the design of an Operational Amplifier
- QSL services
- This Week in Amateur Radio - Edition #072
- VOA Internet Audio Debuts Aug. 15
- Where did Beverage come from?
-
- 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: Sat, 13 Aug 1994 08:57:37 GMT
- From: ihnp4.ucsd.edu!dog.ee.lbl.gov!overload.lbl.gov!agate!howland.reston.ans.net!gatech!swrinde!emory!rsiatl!ke4zv!gary@network.ucsd.edu
- Subject: ..from an aspiring ham
- To: info-hams@ucsd.edu
-
- In article <m24501-120894124021@m24501-mac.mitre.org> m24501@mwunix.mitre.org (Herb Duncan) writes:
- >Joseph
- >I would suggest looking into a rather modern, used ALL-MODE 2 meter rig.
- >The reason is you may eventually become bored with FM. There is a lot of less
- >than technical talk on the repeaters.
-
- That depends on the *people* using the repeater system. Some conversations
- are quite interesting, others less so. It's what *you* make it rather
- than the mode you use that makes for interesting or boring operations.
-
- >Packet with keep you busy if you
- >have access to some good servers in your area.
-
- Packet can be interesting, it's normally done with FM radios though,
- so the multimode doesn't come into play here either. Packet is also
- a very cooperative venture, depending on the *people* involved, it
- can be great, or boring.
-
- >I find SSB and CW an
- >interesting challenge on 2m. It does require a horizontally polarized
- >antenna though. (down 30 dB if cross polarize) SSB and CW would be
- >something to grow into. Good results take a good station. But it is very
- >possible work out 600 miles on lite tropo enhancements and out about 1400
- >miles using meteor bursts, sporadic-E, FAI, etc.
-
- Weak signal work *can* be interesting, though it's usually brief periods
- of excitment separating long boring periods of no activity. In general,
- very little content is passed, and contacts are interesting mostly for
- the odd quirks of propagation they illustrate. Having a multimode for
- this purpose is a good way to start, but if you're serious you'll want
- something better than the commercial offerings. A transverter in front
- of a top notch HF rig is a good way to go, and of course, improving
- preamps and antennas will occupy much of your idle time. Building amps
- can occupy most of the rest.
-
- Another use for a multimode is the amateur satellites. Here you'll
- find contacts that range from the contentless DX types of the weak
- signal crowd to the full blown technical or non-technical ragchews
- heard on repeaters. Plus there's the spice of having HF-like range
- and the fillip of using a spaceborne asset. And there's a moderate
- technical challenge as well in erecting adequate antennas and tracking
- the satellites.
-
- >Anyway, something you may want to check into incase you buy only ONE rig.
- >I found HTs just didn't have the power I needed to work stations without a
- >repeater and the repeaters were always busy when I wanted to operate. The
- >ARRL has an informative book titled something like "VHF: beyond the
- >horizon".
-
- I agree that a HT is terribly limiting, and wouldn't recomend it as a
- first rig to anyone. However, the repeater spectrum sits idle most of
- the day. There's usually always room for you to have a QSO. Even on
- busy repeaters, joining a conversation is almost always welcomed.
- Contacts are what *you* make them. Have something interesting to say,
- and people will want to talk with you.
-
- Gary
- --
- Gary Coffman KE4ZV | You make it, | gatech!wa4mei!ke4zv!gary
- Destructive Testing Systems | we break it. | uunet!rsiatl!ke4zv!gary
- 534 Shannon Way | Guaranteed! | emory!kd4nc!ke4zv!gary
- Lawrenceville, GA 30244 | | gary@ke4zv.atl.ga.us
-
- ------------------------------
-
- Date: Fri, 12 Aug 1994 12:40:21 -0100
- From: library.ucla.edu!csulb.edu!nic-nac.CSU.net!charnel.ecst.csuchico.edu!yeshua.marcam.com!news.kei.com!eff!blanket.mitre.org!linus.mitre.org!newsflash.mitre.org!m24501-mac.mitre@ihnp4.ucsd.edu
- Subject: ..from an aspiring ham
- To: info-hams@ucsd.edu
-
- Joseph
- I would suggest looking into a rather modern, used ALL-MODE 2 meter rig.
- The
- reason is you may eventually become bored with FM. There is a lot of less
- than technical talk on the repeaters. Packet with keep you busy if you
- have access to some good servers in your area. I find SSB and CW an
- interesting challenge on 2m. It does require a horizontally polarized
- antenna though. (down 30 dB if cross polarize) SSB and CW would be
- something to grow into. Good results take a good station. But it is very
- possible work out 600 miles on lite tropo enhancements and out about 1400
- miles using meteor bursts, sporadic-E, FAI, etc.
- Anyway, something you may want to check into incase you buy only ONE rig.
- I found HTs just didn't have the power I needed to work stations without a
- repeater and the repeaters were always busy when I wanted to operate. The
- ARRL has an informative book titled something like "VHF: beyond the
- horizon".
- Welcome to Ham Radio,
- Herb WE7L
- 74551.1275@compuserve.com
-
- ------------------------------
-
- Date: Fri, 12 Aug 1994 18:46:54 MDT
- From: ihnp4.ucsd.edu!news.cerf.net!gopher.sdsc.edu!nic-nac.CSU.net!charnel.ecst.csuchico.edu!psgrain!nntp.cs.ubc.ca!alberta!ve6mgs!usenet@network.ucsd.edu
- Subject: ARLX024 <title>
- To: info-hams@ucsd.edu
-
- SB SPCL @ ARL $ARLX024
- ARLX024 <title>
-
- ZCZC AX56
- QST de W1AW
- Special Bulletin 24 ARLX024
- >From ARRL Headquarters
- Newington CT August 12, 1994
- To all radio amateurs
-
- SB SPCL ARL ARLX024
- ARLX024 title
-
- FAR scholarships awarded
-
- The Maryland-based foundation for Amateur Radio has announced the
- 1994 winners of the 50 college scholarships that it administers. The
- top, 2000 dollar(s) winner was Extra Class licensee Craig A. Gullickson,
- KC6CEX, 20, of Fresno, California.
-
- Awarded a 1200 dollar(s) scholarship was 17-year-old Stefnee Lindberg, N0ONP,
- of Kansas City, Missouri, an Advanced class licensee.
-
- 20 students received scholarships of 1000 dollar(s).
-
- These scholarships are open to all radio amateurs meeting the
- qualifications and residence requirements of the various sponsors.
- The non-profit Foundation represents more than 50 clubs in Maryland,
- northern Virginia, and the District of Columbia.
-
- For more information and application forms for 1995 scholarships
- contact FAR, 6903 Rhode Island Avenue, College Park, MD 20740.
-
-
- NNNN
- /EX
-
- ------------------------------
-
- Date: Fri, 12 Aug 1994 19:46:04 GMT
- From: att-out!nntpa!not-for-mail@RUTGERS.EDU
- Subject: Communications Quarterly , was Qs on no code FCC license and Hardware
- To: info-hams@ucsd.edu
-
- In article <1994Aug12.142318.26732@ke4zv.atl.ga.us>,
- Gary Coffman <gary@ke4zv.atl.ga.us> wrote:
- >
- >As for magazines, well of course you want QST, which you'll get when
- >you join the ARRL. The best magazine is Communications Quarterly,
-
- Does Communications Quarterly have a particular focus ...contesting,
- build-it project, DXing, etc. ?
-
- Ken
-
- ------------------------------
-
- Date: Sat, 13 Aug 1994 08:25:14 GMT
- From: ihnp4.ucsd.edu!dog.ee.lbl.gov!overload.lbl.gov!agate!howland.reston.ans.net!swrinde!emory!rsiatl!ke4zv!gary@network.ucsd.edu
- Subject: Homebrew Global Positioning System (GPS)
- To: info-hams@ucsd.edu
-
- In article <32ggg8$hsh@hollywood.cinenet.net> maustin@hollywood.cinenet.net (Mark Austin) writes:
- >
- >I had an idea. How about linking up a GPS with a cellular phone and
- >a large battery to power both for a couple of days. Then dial a number
- >on the cellular where you want the GPS to send it's location info and
- >drop the whole bundle into someone's car. Since GPS info can be used
- >with several very cheap street mapping systems (Delorme for one) you'll
- >be able to sit at home and watch them driving down the street on
- >your home computer. Should be able to do this cheap. A couple of
- >hundred dollars (with cheap GPS and cheap phone). I have no ideas
- >on keeping cellular costs down though. One thought would be to set
- >the phone to answer and power up the whole gizmo and then shut down
- >after a call is placed into it. You wouldn't get a continuous
- >signal but you'd be able to find where someone is on demand (if they're
- >within cellular calling range). Such a setup could last for a LONG
- >time with the proper battery.
-
- You aren't going to be able to get a GPS and cell phone for a couple
- hundred dollars. The cheapest GPS receivers are around $400, and so
- are cell phones unless you roll their cost into a long term service
- contract. And monthly and per minute cell phone charges will mount
- up fairly rapidly. By using packet radio, amateur or commercial,
- you can send position updates on a regular basis without incurring
- quite as much cost.
-
- DeLorme Mapping and City Streets are a couple of commercial map
- systems that work with GPS. However, APRS (Automatic Packet Reporting
- System) is in some ways better. While it lacks the friendly user
- interface of the commercial products, and it's pre-made map databases
- are skimpy, you can make your own maps, and it works with local and
- remote GPS receivers (using packet UI frames for the latter). It also
- supports other information about the remote sites such as range and
- bearing data from DF equipment, and arbitary text messages.
-
- However, what many of us want is *differential* GPS. The Coast Guard,
- FAA, and others send out position deltas from a fixed benchmark
- receiver that are received and used to correct the reading of the local
- GPS receiver. These transmissions are either at MF or VHF depending on
- the system. A special receiver is required, and either a GPS receiver
- designed to work with differential signals, or a PC that can take the
- timestamped position reports and reconcile them via software, is used
- to give a true position. This method removes the deliberate SA jitter,
- and other error sources such as varying atmospheric propagation factors,
- from the position data. This allows much greater precision in determining
- location than raw GPS alone.
-
- It would be nice if the APRS author would support this mode in his
- software. Some of us are willing to set up benchmark receivers on
- the amateur bands. That timestamped data could be used to correct
- the positions reported by the rover receivers over packet.
-
- Gary
- --
- Gary Coffman KE4ZV | You make it, | gatech!wa4mei!ke4zv!gary
- Destructive Testing Systems | we break it. | uunet!rsiatl!ke4zv!gary
- 534 Shannon Way | Guaranteed! | emory!kd4nc!ke4zv!gary
- Lawrenceville, GA 30244 | | gary@ke4zv.atl.ga.us
-
- ------------------------------
-
- Date: Sat, 13 Aug 1994 03:46:38 GMT
- From: ihnp4.ucsd.edu!news.cerf.net!gopher.sdsc.edu!nic-nac.CSU.net!charnel.ecst.csuchico.edu!psgrain!library.ucla.edu!csulb.edu!csus.edu!netcom.com!grady@network.ucsd.edu
- Subject: ICOM 3200a MODS?
- To: info-hams@ucsd.edu
-
- I've checked the Finnish and Oakland site for 3200a mods and
- have the d19 receiver recovery time mod, but wondered if
- others exist? Any 3200a owners out there with xtended receive or xmit?
-
- 73 k06eb
-
- --
- Grady Ward | For information and free samples on | "Look!"
- grady@netcom.com | royalty-free Moby natural language | -- Madame Sosostris
- +1 707 826 7715 | lexicons (largest in the world), | A91F2740531E6801
- (voice/24hr FAX) | run: finger grady@netcom.com | 5B117D084B916B27
-
- ------------------------------
-
- Date: Sat, 13 Aug 1994 09:06:46 GMT
- From: ihnp4.ucsd.edu!dog.ee.lbl.gov!overload.lbl.gov!agate!howland.reston.ans.net!swrinde!emory!rsiatl!ke4zv!gary@network.ucsd.edu
- Subject: In plain English...
- To: info-hams@ucsd.edu
-
- In article <CuG1q6.JnA@spk.hp.com> depaul@spk.hp.com (Marc DePaul) writes:
- >Thanks to all who have written.
- >
- >By the way, I've stated that the antenna tuner is OPEN. It's
- >a balanced -balanced antenna tuner with a huge vari cap and
- >two roller inductors. I'm using open wire line. I'm NOT
- >using the "typical?" rig--coax--antenna set up. Damn, I knew
- >I liked 40 meters for a reason (maybe it made me feel physically
- >better too!...)
-
- I'd shield that sucker. Not only is it a source of EM radiation
- leakage on frequency, it's also a source of harmonic leakage,
- and a high voltage hazard. Good engineering practice says such
- tuners should be well shielded. As amateurs, we're required to
- follow good engineering practice by Part 97.
-
- Gary
- --
- Gary Coffman KE4ZV | You make it, | gatech!wa4mei!ke4zv!gary
- Destructive Testing Systems | we break it. | uunet!rsiatl!ke4zv!gary
- 534 Shannon Way | Guaranteed! | emory!kd4nc!ke4zv!gary
- Lawrenceville, GA 30244 | | gary@ke4zv.atl.ga.us
-
- ------------------------------
-
- Date: Wed, 10 Aug 1994 16:15:19 GMT
- From: psinntp!arrl.org!jbloom@uunet.uu.net
- Subject: Need some help with the design of an Operational Amplifier
- To: info-hams@ucsd.edu
-
- christos@kuhub.cc.ukans.edu wrote:
- : 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?
-
- Hard to tell without seeing the circuit. One possibility: make sure you
- have a dc return for the noninverting input. If you couple to the input
- with a series capacitor (including, possibly, one that might be in the
- output circuit of whatever audio circuit you use to drive the op amp),
- put a resistor to ground from the noninverting input pin. A 10k
- resistor should do.
- --
- Jon Bloom KE3Z jbloom@arrl.org
-
- ------------------------------
-
- Date: Thu, 11 Aug 94 10:00:05 PDT
- From: ihnp4.ucsd.edu!dog.ee.lbl.gov!agate!howland.reston.ans.net!cs.utexas.edu!csc.ti.com!tilde.csc.ti.com!sislnews.csc.ti.com!usenet@network.ucsd.edu
- Subject: QSL services
- To: info-hams@ucsd.edu
-
-
- > How do QSL services work? How much do they cost?
- >
- > Scott
-
-
- Scott: I assume you are asking about a DX QSL service and not
- the QSL bureau system.
-
- A QSL service takes your outgoing cards and forwards each card
- to the appropriate place for confirmation (via manager, bureau,
- etc.). There is a cost per card, but that is determined by the
- QSL service. The N7RO QSL Service just went out of business this
- month, but was picked up by Les, WF5E. Write to Les and ask about
- his service and cost per card.
-
- 73, Bob Winn, W5KNE
- w5kne@mcimail.com
-
- ------------------------------
-
- Date: Fri, 12 Aug 1994 22:47:47 MDT
- From: ihnp4.ucsd.edu!dog.ee.lbl.gov!overload.lbl.gov!agate!howland.reston.ans.net!gatech!newsxfer.itd.umich.edu!nntp.cs.ubc.ca!alberta!ve6mgs!usenet@network.ucsd.edu
- Subject: This Week in Amateur Radio - Edition #072
- To: info-hams@ucsd.edu
-
- Here is a summary of news items covered on Edition #72 of "This Week in
- Amateur Radio", North America's satellite-delivered audio bulletin service,
- for the week ending 19-Aug:
-
- 1. FCC Awards PCS Licenses After Successful First Spectrum Auction
- 2. Vice President Gore Presents Award to FCC for "Reinventing Government"
- 3. Amateur Radio Society and IARU Leaders Meet in Germany
- 4. CQ/50 Award Guidelines and Rules Released for Magazine's 50th Anniversary
- 5. "The RAIN Dial-up" from Chicago
- 6. Phase 3-D Satellite Spaceframe Received at Orlando Facility for Assembly
- 7. "EZSATS" with Dave Mullenix, N9LTD
- 8. "Gateway 160 Meter Net Report" with Vern Jackson, WA0RCR
- 9. Weekly Propagation Forecast with George Bowen, N2LQS
- 10. "Amateur Radio Newsline" - Edition #887 from Los Angeles
-
- Funding for the program's transmission, uplink, and production expenses was
- provided this week by a grant from the Blue Ridge Video and Digital Society of
- Roanoke, Virginia, where "This Week in Amateur Radio" is heard on the WB4QOJ
- repeater on 147.21 MHz, serving Roanoke, Central Virginia, Southeastern West
- Virginia, and North Central North Carolina. Funding for "Newsline" was
- provided by Brian Litzenberger, N0PMZ, of Garden City, Kansas.
-
- "This Week in Amateur Radio" is a weekly amateur radio news and information
- service, in audio newsmagazine format, which is produced by Community Video
- Associates, Inc., a non-profit, charitable, tax-exempt foundation based in
- Albany, New York. The program is carried on the "Omega Radio Network" each
- Saturday at 7:30 PM (EDT) on the Galaxy III commercial communications
- satellite, transponder 17 (9H), 5.8 MHz wideband audio (4.040 GHz), located at
- 93.5 degrees west longitude in geosynchronous orbit, and can be heard on
- various VHF/UHF repeaters throughout the United States and Canada, as well as
- on 160 meters at 1860 kHz. Contact your local amateur radio club or repeater
- operator if "This Week in Amateur Radio" is not being heard in your area.
-
- Production and transmission expenses are underwritten by contributions from
- repeater system operators, amateur radio clubs, and individuals. For further
- information, contact Stephan Anderman, WA3RKB, at 518/877-7374, or George
- Bowen, N2LQS, at 518/283-3665. You may also reach them via amateur packet @
- WA2UMX.#ENY.NY.USA.NA and on various landline bulletin board services.
-
- Or here on Internet : KXKVI @delphi.com
-
- ------------------------------
-
- Date: Sat, 13 Aug 1994 12:00:38 GMT
- From: voa3!ck@uunet.uu.net
- Subject: VOA Internet Audio Debuts Aug. 15
- To: info-hams@ucsd.edu
-
- >>>In accordance with U.S. law, program materials such as VOA newscasts and
- >>>the VOA News and English Broadcasts radio newswire are provided exclusively
- >>>for recipients outside the United States.
- >>
- >> So, if we are in the states, we technically cannot download the files?
- >
- >Or tune the radio to VOA?
-
- Fear not, fellow residents of the United States. The Radio Police
- really will not nab you if you listen to VOA shortwave broadcasts or
- download files from our public Internet server.
-
- VOA's parent agency, the United States Information Agency, was
- established by the U.S. Congress shortly after the Second World War to
- provide information to other countries. (VOA itself antedates USIA; it
- was created in 1942 to counteract enemy propaganda.) Our legislative
- charter expressly prohibits us from seeking a domestic audience for our
- program materials. As others have pointed out previously in this
- thread, Congress apparently included the prohibition in order to make
- certain that the U.S. government could never convert USIA communication
- facilities into the kind of internal propaganda apparatus operated by
- the German government during the war.
-
- Consequently, VOA radio programs, Worldnet television and USIA
- publications are intended exclusively for recipients in other
- countries. Congress has enacted a few statutory exceptions that
- permitted us to distribute specific programs to a domestic audience --
- the most prominent exemption was for an award-winning film documentary
- on the presidency and assassination of John F. Kennedy -- but the
- general prohibition remains in effect. However, it only restricts what
- we as a government agency may do, not what United States residents may
- hear or watch or read.
-
- To get our programs to other countries, we obviously must use a number
- of transport mechanisms that are publicly accessible inside the United
- States: shortwave radio transmissions, satellite transponders and the
- Internet. We do not encourage those of you within the United States to
- listen to or watch these programs as they are transmitted to other
- countries, but no one in the government objects if you do. (And even
- if we did, it would be unconstitutional for us to try to stop you.)
-
- On the other hand, I do strongly recommend that both residents of the
- United States and residents of other countries avoid listening to the
- BBC World Service, as there is mounting medical evidence that this can
- corrupt your English pronunciation. . . .
-
- --
- Chris Kern ck@voa.gov ...uunet!voa3!ck +1 202-619-2020
-
- ------------------------------
-
- Date: 13 Aug 94 13:13:31 GMT
- From: news-mail-gateway@ucsd.edu
- Subject: Where did Beverage come from?
- To: info-hams@ucsd.edu
-
- >I have seen other references to "beverage" in this group, but my
- >handy-dandy Random House shows only the usual definition for
- >the word. What does it mean in ham-ese?
- >
- >
- >David F. Jenkins DJENKINS@jetson.uh.edu
- >Decision and Information Sciences
- >Room 280-A MH
- >University of Houston
- >713/743-4725
-
- Beverage was the name of the man who invented this type of antenna. He passed
- away about 1 1/2 years ago in his late 90's.
-
- ******************************************************************************
- * Robert G. Schaffrath, N2JTX * Internet: rgs%wpmax2%gfimda@uunet.uu.net *
- * Systems Engineer * CompuServe: 76330,1057 *
- * Maxwell House Coffee Company * Phone: 914-335-2777 *
- * Kraft General Foods Corp. * Slogan: "ervice is ur mott" *
- ******************************************************************************
-
- ------------------------------
-
- Date: Sat, 13 Aug 1994 09:03:13 GMT
- From: ihnp4.ucsd.edu!dog.ee.lbl.gov!overload.lbl.gov!agate!howland.reston.ans.net!swrinde!emory!rsiatl!ke4zv!gary@network.ucsd.edu
- To: info-hams@ucsd.edu
-
- References <32egck$ei8@geraldo.cc.utexas.edu>, <32gbe5$2tq@scratchy.reed.edu>, <CuFt96.I7L@nntpa.cb.att.com>rinde
- Reply-To : gary@ke4zv.atl.ga.us (Gary Coffman)
- Subject : Re: RF hazards
-
- In article <CuFt96.I7L@nntpa.cb.att.com> dara@physics.att.com (Shel Darack) writes:
- >jfilner (jfilner@reed.edu) wrote:
- >: twp77@isuvax.iastate.edu writes:
- >: While I agree that jury is definately still out on biological
- >: effects of RF. The speaker on the reciever at least is going to
- > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
- >: produce EM waves (but probably not RF waves), if the reciever is
- > ^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^
- >: poorly sheilded it may emit all sorts of EM waves.
- >: jfilner@reed.edu
- >
- >
- >No,NO, NO! The speaker produces air PRESSURE waves which can at
- >sufficient volumes break the stalk like receptors in your ears
- >and result in hearing loss. Now that might be one of the few
- >established links to the danger of RF! And RF (radio frequency)
- >waves ARE EM (electro magnetic) waves at particular frequlencies
- >(radio). 'nuff said for now.
- > Shel WA2UBK
-
- Actually, he's right. Speakers do produce time varying magnetic
- fields from the voice coil. These are mostly induction fields
- with little actual EM radiation. However, that *is* the kind of
- low level field that researchers are currently studying to determine
- if they have effects on biological systems. In this regard, the
- air pressure waves also produced by speakers can be viewed as merely
- an annoying *side effect* of their magnetic induction field production.
-
- Gary
- --
- Gary Coffman KE4ZV | You make it, | gatech!wa4mei!ke4zv!gary
- Destructive Testing Systems | we break it. | uunet!rsiatl!ke4zv!gary
- 534 Shannon Way | Guaranteed! | emory!kd4nc!ke4zv!gary
- Lawrenceville, GA 30244 | | gary@ke4zv.atl.ga.us
-
- ------------------------------
-
- Date: Thu, 11 Aug 1994 21:47:12 GMT
- From: ihnp4.ucsd.edu!usc!howland.reston.ans.net!gatech!news-feed-1.peachnet.edu!news.duke.edu!solaris.cc.vt.edu!swiss.ans.net!malgudi.oar.net!witch!ted!mjsilva@network.ucsd.edu
- To: info-hams@ucsd.edu
-
- References <1994Aug10.103830.1@aspen.uml.edu>, <32bm8a$iu2@news.csus.edu>, <32bot3$45r@agate.berkeley.edu><bentti-110894082542@m32003.esl.com>ted
- Reply-To : mjsilva@ted.win.net (Michael Silva)
- Subject : Re: Which code learning method? Why?
-
-
- In article <bentti-110894082542@m32003.esl.com>, Davin Bentti (bentti@pebbles.esl.com) writes:
- >
- >> > My exam used some variety of Farnsworth.
- >>
- >> The ARRL exams are as follows:
- >>
- >> 1A: 5 WPM at 16 WPM Farnsworth
- >> 1B: 13 WPM at 18 WPM Farnsworth
- >> 1C: 20 WPM at 22 or 23 WPM (can't remember)
- >>
- >> If you learn code Farnsworth, you'll have a easier time upgrading.
- >
- > Now for a newbie question. What is "Farnsworth"? I am very confused
- >as to how something can be 5WPM _and_ 16WPM at the same time. I am
- >thinking
- >of getting a tech plus and looking into learning CW.
- >
- > How do I learn code Farnsworth?
- >
- The Farnsworth method just means sending/receiving/learning the
- individual characters at a higher speed, then stretching out the time
- between characters to get the total wpm down. The advantages are (1)
- the higher character speed deters you from trying to count dits and
- dahs (dah-and-four-dits...ummm...6) and helps you to learn the
- characters as unified sounds, and (2) as you increase your speed, the
- characters sound the same, just the time between them decreases. I
- think all the major CW tapes use Farnsworth, and all the major CW
- software programs allow you to specify it. Don't know about the ARRL
- code practice transmissions -- haven't listened in a while.
-
- Good luck. It'll come easily enough if you don't fight it. Whatever
- you do, *don't* count dits and dahs, learn the characters as a combined
- sound.
-
- Mike, KK6GM
-
-
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- End of Info-Hams Digest V94 #910
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