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- Date: Sat, 8 Jan 94 08:09:32 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 #13
- To: Info-Hams
-
-
- Info-Hams Digest Sat, 8 Jan 94 Volume 94 : Issue 13
-
- Today's Topics:
- ARLD002
- ARLP001 Propogation de KT7H
- Good service
- How does it work?
- I need a terminal program for 2 TNCs at once
- QHH
- Richmond Frostfest
- Superball has three-hour life
- This Week In Amateur Radio Edition #41
- TOYOTAS AND HAM RIGS
- What Kind of Antenna Is This? (2 msgs)
-
- 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: Fri, 7 Jan 1994 12:15:09 -0700
- From: sdd.hp.com!math.ohio-state.edu!howland.reston.ans.net!agate!library.ucla.edu!news.mic.ucla.edu!unixg.ubc.ca!nntp.cs.ubc.ca!alberta!ugc!nebulus!ve6mgs!usenet@network.ucsd.edu
- Subject: ARLD002
- To: info-hams@ucsd.edu
-
- SB DX @ ARL $ARLD002
- ARLD002 DX news ZCZC AE99
- QST de W1AW DX Bulletin 2 ARLD002 From ARRL Headquarters
- Newington CT January 6, 1994 To all radio amateurs
-
- Thanks to DX news contributors Steve, W9NUF; the Northern
- Illinois DX Association; Tedd, KB8NW; the Ohio/Penn and
- Yankee Clipper Contest Club PacketCluster Networks.
-
- PETER I ISLAND DXPEDITION NEARLY CALLED OFF. It was
- discovered that the icebreaker scheduled to pick up the
- team at the end of the DXpedition would not be able to
- make the stop. The team worked feverishly to secure
- alternate transportation, involving much liason work,
- telephone calls and visits into Russia. The end result is
- that a Russian ship will make the pickup.
-
- The team, consisting of leader K0IR, WA4JQS, W6MKB, N4GCK,
- ON6TT, KK6EK, XE1L, HB9AHL and a civilian research
- scientist, will be departing in mid-January for Port
- Stanley in the Falkland Islands. February 1 is the landing
- date for Peter I.
-
- FALKLAND ISLANDS. Before their activity with the 3Y
- DXpedition, Ralph, K0IR, and Peter, ON6TT, will have a
- four or five day layover here. While waiting for the rest
- of the 3Y team, they hope to be active as VP8BZL on 160,
- 80 and 40 meter CW and SSB. QSL via KA6V.
-
- HEARD AND KERGUELEN ISLANDS. Some guys just can't get
- enough radio. Tony, WA4JQS, has been planning a DXpedition
- to Heard and Kerguelen to take place after his Peter I
- activity.
-
- PRATAS ISLAND HAPPENED. This much talked about operation
- kicked off in abbreviated form at 0430z January 5 and ran
- until around 0730z. The timing did not support stateside
- QSOs, though the BV9P team did manage to work 630 QSOs in
- about two hours of operating. Many Japanese and some
- Europeans made it into the BV9P log. The word is that
- this maiden operation may open the door for a DXpedition
- in March. Negotiations with officials continue. Remember
- that there is currently no DXCC status for this one.
-
- ETHIOPIA. ET3BH was worked yesterday on 24941 kHz at
- 1420z. He will readily make schedules for contacts on 20,
- 15 and 10 meters. QSL via SM3EVR.
-
- MALPELO. I2RAO/HK0 has been worked on SSB. Listen to
- 3795 kHz at 0300z, 14260 kHz at 2100z and 18132 kHz at
- 1600 and 1740z. QSL to PO Box 146, 27100 Pavia, Italy.
-
- REVILLA GIGEDO. XF4CI has been on 75 meter SSB around
- 3795 kHz at 0300, 1230 and 1300z. Also check 160 meters
- around 1830 kHz between 0630 and 0730z. Nellie also works
- the WARC bands. QSL via XE1CI.
-
- RODRIQUEZ ISLAND. 3B9FR is on 18125 kHz SSB around 1730z
- and frequently announces his operating schedule for other
- bands at that time. QSL via F6FNU.
-
- ANTARCTICA. KC4AAA and KC4AAC have both been on 20 meter
- SSB between 14250 and 14270 kHz around 0130z. QSL KC4AAA
- via NC6J and KC4AAC via KE9AS.
-
- WESTERN SAHARA. S0RASD was recently worked on 21255 kHz
- at 1800z. QSL via EA6JG.
-
- SAINT PETER AND PAUL ROCKS. A one week operation is to
- start around January 10. QSL chores will be handled by
- JA2JPA.
-
- KUWAIT. Bob, N6BFM, should be on as 9K2ZZ soon, and plans
- to be in Kuwait for a year. A 40 meter beam was donated
- to the cause, so Bob should be loud on that band. QSL via
- W8CNL.
-
- PREFIX HUNTERS NOTE. New call signs for Ukraine debuted
- on January 1, 1994. They include UR, US, UT, UU, UX and
- UY. According to U5WF, the UV, UW and UZ blocks, also
- assigned to Ukraine, will not be used until perhaps the
- year 2000.
-
- BANGLADESH. There was a station active on New Year's Day
- signing S21ZZ on 10102 kHz at 1500z. Eric, S21ZG, can be
- worked on the 14226 kHz net around 1330z. Before the net,
- listen for him on 20 meter CW. QSL via W4FRU.
-
- 40 METER HEARD AND WORKED. BV7FC 7005/1315, HZ1AB
- 7005/1310, TA2BD 7004/0430 and 3B8CF 7008/1250.
- NNNN
- /EX
-
- ------------------------------
-
- Date: Fri, 7 Jan 1994 12:14:23 -0700
- From: sdd.hp.com!math.ohio-state.edu!magnus.acs.ohio-state.edu!usenet.ins.cwru.edu!agate!library.ucla.edu!news.mic.ucla.edu!unixg.ubc.ca!nntp.cs.ubc.ca!alberta!ugc!nebulus!ve6mgs!usenet@@..
- Subject: ARLP001 Propogation de KT7H
- To: info-hams@ucsd.edu
-
- SB PROP @ ARL $ARLP001
- ARLP001 Propagation de KT7H
- ZCZC AP15 QST de W1AW Propagation Forecast Bulletin 1
- ARLP001 >From Tad Cook, KT7H Seattle, WA January 7, 1994
- To all radio amateurs
-
- Solar activity rose again last week, with flux an average
- 17 points higher than the week previous. New Years Day
- was the biggest treat, with the flux at 148.3, higher than
- on any day since March 12, 1993. Coronal hole activity
- produced some geomagnetic disturbances, but nothing really
- major.
-
- Solar flux should fall this week, dropping to 100 around
- January 12, and then rise again toward a peak around
- January 26 of 140. There is a chance of some moderately
- disturbed conditions around January 12 or 13, and again,
- but possibly more severe, around January 28.
-
- Sunspot Numbers from December 30 through January 5 were
- 110, 134, 130, 94, 134, 131 and 154, with a mean of 126.7.
- 10.7 cm flux was 142.8, 140.8, 148.3, 146, 133.1, 128.8
- and 136.9, with a mean of 139.5
-
- The path projection for this week is from Garland, Texas
- to Brazil. It is based on a flux of 115 for Saturday,
- January 8.
-
- 80 meters should be good from 2330z to 0930z, with the
- best time from 0130z to 0830z. 40 meters looks good from
- 2300z to 1000z, with the best conditions from 0030z to
- 0900z. 30 meters should be open from 2230z to 0800z or
- 0900z, with the best bet for propagation from 0000z to
- 0200z, and from 0630z to 0800z. 20 meters should be good
- from 1900z to 0030z, although on some days it may be open
- as early as 1300z and as late as 0600z. 17 meters looks
- good from 1400z to 2230z, and 15 meters from 1500z to
- 2130z. 12 meters should be open from 1600z to 1900z, and
- on some days as early as 1500z and as late as 2200z. 10
- meters looks marginal over this path, but on many days it
- could be open from 1600z to 2100z.
- NNNN
- /EX
-
- ------------------------------
-
- Date: 7 Jan 1994 16:05:14 -0600
- From: swrinde!cs.utexas.edu!not-for-mail@network.ucsd.edu
- Subject: Good service
- To: info-hams@ucsd.edu
-
- After a bad experience with another company I thought I would relate a
- good exerience with Yaesu.
-
- I recently purchased and old Yaesu 301S QRP rig. I really am starting to
- appreciate it. .The case is in good shape but some screws are missing
- and some special fasteners on the top part of the case. Just for the
- heck of it I thought I would call the toll free number and see If I
- could get replacements. I was put through from the operator to parts
- immediately. I explained to the gentleman what I was looking for. He
- made sure he understood my request, took my name, address and phone
- number and said he would reference them in the computer and send them
- right out in the mail and enclose the bill... no charge on pre-payment..
- .sounded good, but I got worried about the cost.. didn't want to spend
- more than I paid for the radio. The gentleman said, the screws are about
- 5-10C each and the other parts not much more.. I decided to splurge.
-
- I really enjoyed the way I was treated and sure hope I get the parts.
-
- Have a good weekend.
-
- 73
-
- Jeff, AC4HF
-
- ------------------------------
-
- Date: Fri, 7 Jan 1994 18:02:45 GMT
- From: qualcomm.com!vixen.cso.uiuc.edu!newsrelay.iastate.edu!news.iastate.edu!wjturner@network.ucsd.edu
- Subject: How does it work?
- To: info-hams@ucsd.edu
-
- In article <1994Jan6.221522.1@wcsub.ctstateu.edu> downing001@wcsub.ctstateu.edu writes:
- >On a semi-related topic, I am curious about the card-key system that our
- >workplace has recently installed. The trade name is CardKey, and the
- >supplier told our executive that it was the "latest state-of-the-art"
- >equipment.
-
- I don't know how it works, but it certainly isn't "latest state of the art." I
- know companies that used this 10 or 15 years ago.
- --
- Will Turner, N0RDV ---------------------------------------------
- wjturner@iastate.edu | "Are you going to have any professionalism, |
- twp77@isuvax.iastate.edu | or am I going to have to beat it into you?" |
- TURNERW@vaxld.ameslab.gov ---------------------------------------------
-
- ------------------------------
-
- Date: Sat, 8 Jan 1994 10:44:09 GMT
- From: world!ghitz@uunet.uu.net
- Subject: I need a terminal program for 2 TNCs at once
- To: info-hams@ucsd.edu
-
- DAVE CASE - KA1NCN (CASEDA@ECSUC.CTSTATEU.EDU) wrote:
- : I am looking for a TERMINAL (not a logging) program that can handle
- : two TNCs at once (one through each of two COM ports).
- : Preferable FTP-able, but I can send you a disk if you have it.
- : 73
- : Dave/KA1NCN
-
- : End of returned message
-
- I had the same problem here and solved it by running my comm
- program twice under the multi-tasker DESQview with different
- COMx parameters for each copy.
-
- 73 de George, W1DA
- --
- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
- George E. Hitz, jr. W1DA internet: ghitz@world.std.com
- Sudbury, Massachusetts, USA AX.25: w1da @ wb1dsw.nh.usa.na
-
- ------------------------------
-
- Date: Thu, 6 Jan 94 21:21:00 -0500
- From: agate!usenet.ins.cwru.edu!ukma!news2.uunet.ca!ionews.io.org!bville!bryan.weaver@ames.arpa
- Subject: QHH
- To: info-hams@ucsd.edu
-
- RD>>present heading and altitude are..." (Yes, Gary, people used to send Morse
- >>code from airplanes with a straight key strapped to their legs!)
-
- I occasionally speak to a fellow on a local 2m repeater who is a truck
- driver. He often goes CW mobile with a straight key strapped to his
- leg. He checks in pretty well daily with a small group on 40m CW.
-
- Has anyone actually found out what QHH is?
-
- 73 de Bryan, VE3TRJ
-
- * 1st 1.11 #1040 * But I never joined the Fertilizer-of-the-Month Club
-
- ------------------------------
-
- Date: 7 Jan 1994 17:35:10 GMT
- From: news.larc.nasa.gov!aseb-student2.larc.nasa.gov!user@uunet.uu.net
- Subject: Richmond Frostfest
- To: info-hams@ucsd.edu
-
- May I jump in here and ask a simple question?
- When and where(what facility) is the Richmond VA Frostfest this year?
- Please post in case someone else is in need of same.
- Thanks!
-
-
-
-
- Any material contained in the above does not reflect anyone's view but my
- own
-
- ------------------------------
-
- Date: Fri, 7 Jan 1994 20:38:46 -0700
- From: sdd.hp.com!math.ohio-state.edu!howland.reston.ans.net!europa.eng.gtefsd.com!library.ucla.edu!news.mic.ucla.edu!unixg.ubc.ca!nntp.cs.ubc.ca!alberta!ugc!nebulus!ve6mgs!usenet@network.UCSD
- Subject: Superball has three-hour life
- To: info-hams@ucsd.edu
-
- SUPERBALL RISES, THEN FALLS
-
- Some days go better than others. Superball 1-94, the balloon
- carrying amateur radio telemetry and ATV had a life of about three
- hours. Here is a report for any who were following the event.
-
- Launch took place Friday, January 7, at 0926 MST (1626z). Final
- payload checkout was done, the amount of helium required for 120,000
- feet was metered in, and the launch took place with all systems
- looking good. The balloon headed northeast as expected. Telemetry
- was copied on both 2 and 15 meters, and ATV sent back video of the
- balloon.
-
- The balloon began to change course, as expected, as it came out of
- the Troposphere and reached higher layers. At about 1204 MST (1804
- UTC) the balloon unexpectedly burst. A quick drop in the
- differential pressure (difference between inside and outside
- pressures) from 1.11 to 0.03 was one of the first clues that
- something had changed radically. Hams in eastern Utah actually
- watched the rupture on ATV and later saw the parachute deploy. GPS
- readings stabilized at about 1430 MST (2130z), and the package is
- believed to have come to rest at that time.
-
- Telemetry on 15 meters was copied in Ohio with an RST of 579 after
- the package came to rest. This leads to the inference that it
- probably landed in a tree with the 15-meter antenna in a favorable
- position. The landing site is in Utah's Uinta Mountains in the
- neighborhood of Wolf Creek Summit, a 9500-foot pass. Plans are to
- locate and retrieve the payload tomorrow (Saturday) morning with the
- help of snowmobiles and the Wasatch County Search and Rescue Team.
-
- The reason for the rupture is still uncertain, but one possibility
- is that turbulence in the troposphere caused severe twisting and
- kept the balloon from unfurling properly as it gained altitude.
- This, in turn, kept the helium from spreading through the balloon
- properly and resulted in too high a differential pressure. The
- twisting phenomenon was viewed on ATV.
-
- The GPS receiver performed well reporting latitude and longitude,
- but apparently satellite geometry was not favorable for good
- altitude readings. The initial altitude readings were spurious
- (e.g. 149 meters, which is below ground level in Utah). Later the
- altitude was reported as "999" which is the receiver's indication
- that good data is not available. Other indications, however, lead
- the team to believe that the balloon had reached an altitude of
- about 100,000 feet at the time of rupture.
-
- Here are some selected GPS positions as received on 2 and 15 meters:
-
- Time Latitude Longitude
- (UTC)
- ---- ----------------- -------------------
- 1838 40 deg. 32.72' N. 110 deg. 57.74' W.
- 1849 40 32.89' 110 57.74'
- 1904 40 22.80' 111 11.42'
- (This was the first reading showing the radical drop in
- differential pressure. The CW note began chirping heavily.)
- 1906 40 36.01' 111 (minutes lost)
- 1915 40 36.01' 111 8.81'
- 1917 40 36.01' 111 8.81'
-
- The following data were copied by WB8ELK's father in Ohio from the
- 15-meter telemtry signal:
-
- 2048 40 28.26' 111 0.10'
- 2130 40 28.31' 111 0.10'
- 2210 40 28.66' 111 0.10'
-
- The final reading came with a GPS status indicator showing that it
- was not guaranteed valid.
-
- Thanks to the many who helped copy data, relay messages, locate
- snowmobiles, and record launch and ATV video.
-
- Telemetry logs and video tapes are solicited. E-mail to:
- WB7QBC@uugate.aim.utah.edu
- or U.S. mail to:
- John Luker, WB7QBC
- 1226 West 725 North
- Clearfield, UT, 84015
-
- ------------------------------
-
- Date: Fri, 7 Jan 1994 20:31:56 -0700
- From: sdd.hp.com!math.ohio-state.edu!howland.reston.ans.net!agate!library.ucla.edu!news.mic.ucla.edu!unixg.ubc.ca!nntp.cs.ubc.ca!alberta!ugc!nebulus!ve6mgs!usenet@network.ucsd.edu
- Subject: This Week In Amateur Radio Edition #41
- To: info-hams@ucsd.edu
-
- Here is a summary of news items covered on Edition #41 of "This Week in
- Amateur Radio", North America's satellite-delivered audio bulletin service,
- for the week ending 14-Jan:
-
- 1. FCC Releases Notice of Proposed Rule Making for "Vanity" Call Signs
- 2. ARRL Lists Landline Services Carrying Full Text of PR Docket 93-305
- 3. Commission Kills Club/Military Station Administration Program
- 4. AMSAT/WJ9F Announce Resumption of AO-16/Pacsat Experimenter's Days
- 5. League Opens Nominations for Brier Instructor/Teacher Awards
- 6. Packet Stations Reminded to Maintain BID Integrity of ARRL Bulletins
- 7. Taiwanese/Finnish Amateurs Activate Pratus Island, Team Includes OH2BH
- 8. "The RAIN Dial-up" from Chicago
- 9. Crew of 15th Main Expedition Scheduled for Launch to MIR Platform
- 10. "YL Spotlight" with Carli Drake, WB1BTJ
- 11. "EZSATS" with Dave Mullenix, N9LTD
- 12. OPDX/NODXA Present Third Annual DX Survey, Deadline is January 31st
- 13. "Gateway 160 Meter Net Report" with Vern Jackson, WA0RCR
- 14. Weekly Propagation Forecast with George Bowen, N2LQS
- 15. "DX Window" with John Yodis, K2VV
- 16. Membership in "FISTS" Swells to Over 1000, Morse Lovers Invited
- 17. DX News and Special Event Stations with George Bowen, N2LQS
- 18. "Amateur Radio Newsline" from Los Angeles - Edition #852
- 19. "DXing the AM and FM Broadcast Bands" - First in a Series
-
- Funding for the program's transmission costs and production expenses were
- provided this week by a grant from Chris Huber, N6ICW, and the N6ICW Repeater
- Group of Sacramento, California, which carries "This Week in Amateur Radio" in
- South Lake Tahoe on 145.15 MHz and in Sacramento on 147.195 MHz.
-
- "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 (EST) 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. 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, George Bowen,
- N2LQS, at 518/283-3665, or Adrian Sebborn, N1JWO, at 413/458-8219. You may
- also reach them via amateur packet @ WA2UMX.#ENY.NY.USA.NA and on various
- landline bulletin board services.
-
- ------------------------------
-
- Date: Fri, 7 Jan 1994 20:39:18 GMT
- From: swrinde!cs.utexas.edu!math.ohio-state.edu!cyber2.cyberstore.ca!nwnexus!jhgrud!eskimo!mzenier@network.ucsd.edu
- Subject: TOYOTAS AND HAM RIGS
- To: info-hams@ucsd.edu
-
- In <9401071154.AA11626@cmr.ncsl.nist.gov>, Robert Carpenter wrote:
-
- : I note a recent posting, apparently from Toyota USA hams.
- : Number 1 on their list of requirements for installation of rigs in Toyotas,
- : in order for the warrantee to continue is:
- : "The rig must be FCC Type Approved."
- : WHERE DO I BUY FCC TYPE APPROVED HAM GEAR ????????
- : I thought that ham gear was specifically NOT type approved. But then again I
- : don't intend to buy a Toyota, so it's all academic.
-
- Boy, some lawyer has a sick sense of humor. Type Approved is the
- most stringent form of approval, where not only the design paperwork,
- but an actual representative sample has to be sent to the FCC lab
- for approval. This sort of stuff is reserved for broadcast transmitters.
-
- The only ham gear that need authorization is RF amplifiers, and they only
- need Type Acceptance.
-
- Of course, just about anything with a microprocessor in it needs to be
- Certified under the RFI regulations (Part 15).
-
- Mark Zenier mzenier@eskimo.com markz@ssc.com
-
- (Not a lawyer, but I've got last years copy of 47 CFR Part 2)
-
- ------------------------------
-
- Date: 7 Jan 1994 21:37:09 GMT
- From: swrinde!cs.utexas.edu!asuvax!chnews!ornews.intel.com!landesk!bmiller@network.ucsd.edu
- Subject: What Kind of Antenna Is This?
- To: info-hams@ucsd.edu
-
- In article <CJA0Ds.85w@world.std.com> dbr@world.std.com (Dan Reiner) writes:
- >A mobile antenna I've seen in various cities, almost exclusively on
- >municipal vehicles, looks sort of like a folded sheet of cardboard
- >lying upright on the long side. In other words, it's about four inches
- >high, ten inches long and maybe an inch thick.
- >
- >Does anyone know what this might be? With its low profile, it might
- >make an interesting ham antenna.
- >
- >-- Dan N2EDC, who reminds you as a public service:
- >
- >It's: contraction of "it is."
- >Its: possessive form of "it."
-
- My guess is that it is some type of radome type antenna, similar to the
- type you see on cellular towers (in sectored cell sites). I don't reall
- y know how these work, but my understanding is that they are directional.
- In mobile use, these probably exhibit a flat radiation pattern (a guess).
- The frequency could be anywhere, but the larger the length, the lower
- the frequency. I'm sure someone on the net can dispell my speculation.
-
- Brett N7OLQ
-
- ------------------------------
-
- Date: Fri, 7 Jan 94 21:42:14 GMT
- From: mnemosyne.cs.du.edu!nyx10!rchalk@uunet.uu.net
- Subject: What Kind of Antenna Is This?
- To: info-hams@ucsd.edu
-
- dbr@world.std.com (Dan Reiner) writes:
-
- >A mobile antenna I've seen in various cities, almost exclusively on
- >municipal vehicles, looks sort of like a folded sheet of cardboard
- >lying upright on the long side. In other words, it's about four inches
- >high, ten inches long and maybe an inch thick.
-
- >Does anyone know what this might be? With its low profile, it might
- >make an interesting ham antenna.
-
- >-- Dan N2EDC, who reminds you as a public service:
-
- >It's: contraction of "it is."
- >Its: possessive form of "it."
-
- This is most likely a VHF Slot antenna, with the slot running horizontally
- under the bar. A horizontal slot will radiate Vertically polarized signals,
- and the biggest advantage of this design is low physical profile....ideal
- for Busses, etc.
-
- Richard
-
- ------------------------------
-
- Date: Fri, 7 Jan 1994 21:55:51 GMT
- From: swrinde!cs.utexas.edu!howland.reston.ans.net!torn!newshub.ccs.yorku.ca!elearn.edu.yorku.ca!edleslie@network.ucsd.edu
- To: info-hams@ucsd.edu
-
- References <2ghta6$rj3@news.tamu.edu>, <1994Jan6.221522.1@wcsub.ctstateu.edu>, <1994Jan7.195111.28789@pony.Ingres.COM>ca
- Subject : Re: How does it work?
-
- Kerry Kurasaki (kerry@Ingres.COM) wrote:
-
- : My understanding is that the card reader/plate generates a small AC field
- : which is sufficient to power the card and have it radiate its serial number
- : back to the plate. I don't have any clue on frequencies, data formats,
- : or whatnot.
-
- I've used a system which used a PC-board type key. The PC board has etches
- on it in sworls, and has several small components/devices in 'pockets' in
- the board. The whole think makes a tuned antenna, which resonates at
- frequencies selected by the devices installed. The 'reader' is a low-power
- radiating device which is emitting a signal which sweeps through a large
- frequency range every second or so, measuring those frequencies where the
- card resonates by monitoring the power output (the power output peaks at
- each of the resonant frequencies). It is connected to the controller with
- coax cable. We used them for access control to a tanker truck gasoline/oil
- loading facility.
-
- Although they were touted to be secure (since the cards were hard to
- duplicate) they were found to be actually very insecure in practice, but I
- won't get into just how here. If you recognize the ones I'm referring to,
- and are concerned about their security, email might be more appropriate than
- this newsgroup.
-
- Ed
-
- ------------------------------
-
- Date: Fri, 7 Jan 1994 16:42:17 GMT
- From: haven.umd.edu!news.umbc.edu!europa.eng.gtefsd.com!howland.reston.ans.net!vixen.cso.uiuc.edu!newsrelay.iastate.edu!news.iastate.edu!bwehr@ames.arpa
- To: info-hams@ucsd.edu
-
- References <2gfg44$fvl@portal.gmu.edu>, <2gget3$q5b@tuegate.tue.nl>, <CJ8pJz.BzH@news.iastate.edu>n
- Subject : Re: Ham club at a University
-
- In article <CJ8pJz.BzH@news.iastate.edu> sknapp@iastate.edu (Steven M. Knapp) writes:
- >In article <2gget3$q5b@tuegate.tue.nl> philip@stack.urc.tue.nl (Philip Komen) writes:
- >>Shawn C. Masters (smasters@fame) wrote:
- >>
- >>> I've started to put together an amateur radio club here at
- >>> George Mason University. I was wondering if anyone out there had any
- >>> words of wisdom/expereince in starting such clubs. Please e-mail me to
- >>> keep the bandwidth usage down.
- >>
- >>Just go on! I am a member of a club station here on the university, in a
- >>matter of fact i am the vice-president of the club. It's very nice to see
- >>people that were never interested in the radio hobby, just having fun with
- >>packet or so.
- >
- >My advice? Keep the club intresting!!!
- >Our club got in a rut. We appointed someone (Brant, take a bow) to
-
- Brant takes a Bow !!!!!!!!!!!
-
-
- >find a special activity for each month we have a meeting. We have had
- >many fine presentations, and our membership is becoming more
- >intrested.
- >
- >Oh, and a good constitution never hurts. :)
- >________________________________________________________________________
- >Steven M. Knapp Computer Engineering Senior
- >sknapp@iastate.edu Vice President Cyclone Amateur Radio Club
- >Iowa State University; Ames, IA; USA Durham Center Operations Staff
- >
- >
-
-
-
-
-
- --
- Brant
- bwehr@iastate.edu
-
- ------------------------------
-
- End of Info-Hams Digest V94 #13
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