Date: Fri, 1 Jul 94 12:04:59 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 #730 To: Info-Hams Info-Hams Digest Fri, 1 Jul 94 Volume 94 : Issue 730 Today's Topics: * SpaceNews 04-Jul-94 * ARLD038 DX news ARLX018 Eastern VHF/UHF meet ARLX019 Video's a winner Call-Sign Prefixes Conversion factors Help with No Scratch mag mount Newbie license question -- change of address Novice on-air CW practice Open Line Sunday! QST H/Brew Isoloop WANTED: 2m or 440 X-miter & antenna Wanted: Novice on-air CW practice Where is the best place to install a low pass filter? 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: 1 Jul 94 14:10:44 GMT From: news-mail-gateway@ucsd.edu Subject: * SpaceNews 04-Jul-94 * To: info-hams@ucsd.edu SB NEWS @ AMSAT $SPC0704 * SpaceNews 04-Jul-94 * BID: $SPC0704 ========= SpaceNews ========= MONDAY JULY 4, 1994 SpaceNews originates at KD2BD in Wall Township, New Jersey, USA. It is published every week and is made available for unlimited distribution. * SHUTTLE LAUNCH UPDATE * ========================= MISSION: STS-65 - INTERNATIONAL MICROGRAVITY LABORATORY - 2 % VEHICLE: Columbia/OV-102 ORBITAL ALTITUDE: 184 sm % LOCATION: Pad 39A INCLINATION: 28.45 degrees % LAUNCH DATE: July 8, 1994 CREW SIZE: 7 % LAUNCH TIME: 12:43 p.m. EDT LAUNCH WINDOW: 2 hrs/30 min % KSC LANDING DATE/TIME: July 22/6:43 a.m. EDT % MISSION DURATION: 13 days/18 hours [Info via NASA] * HOUSTON AMSAT NET INFO * ========================== The Houston AMSAT Net originates live from Houston, Texas on Tuesdays at 10:00 PM Central Time on 147.100 MHz. It is simulcast on the Galaxy 3 satellite, transponder 17, on a 5.8 MHz audio subcarrier and is available for distribution among amateur repeater stations around the country. The net is of a technical nature for those interested in satellite, ATV and balloon launch communications. AMSAT News Bulletins, SpaceNews, NASA news, Hints & Tips on working satellites and much more is available every week on the net. The following amateur operators carry the Houston AMSAT Net live or rebroadcast it at a more convienent time on their stations. If your local repeater does not carry our net, ask the trustee if they would. NETARC - New England WA1PBJ 448.225 - 88.5 Sargents Pur, NH (White Mountains) WA1PBJ 446.575 - 88.5 Boston, MA KC1HF 448.225 - 88.5 Framingham, MA WA1PBJ 442.000 + 88.5 Fitchburg, MA K1MON 442.600 + 88.5 Portland, ME Southern Wisconsin Repeater Group N9KAN 443.400 Madison, WI KD9UU 443.675 North Freedom, WI AA9AD 53.090 Fort Atkinson, WI Other Repeaters and Frequencies (Alphabetized by State then City) NL7H 147.000 Anchorage, AK KL7FZ 444.950 Anchorage, AK WL7AML 439.250 Kodiak, AK Audio on ATV Repeater NO6B 224.040 Pasadena, CA N6DD 447.650 Upland, CA WA4HX 146.880 Lakeworth, FL (West Palm Beach Area) AJ1R 145.230 Tampa, FL AJ1R 443.625 103.5 Tampa, FL WB9YCZ 147.390 Noblesville, IN (N. Indianapolis) WB9YCZ 444.125 Noblesville, IN (N. Indianapolis) N0PMZ 146.570 Simplex Garden City, KS KA0PQW 223.940 Chaska, MN (Minneapolis/St. Paul Area) WB0BWL 145.210 Columbia Heights, MN (Minneapolis Area) WA0RCR 1.860 160 Mtrs Wentzville, MO WA0ZOK 146.715 Horace, ND 443.750 Horace, ND KB7BY 1.2GHz ATV Repeater Las Vegas, NV KD8XB 146.805 Lisbon, OH W0KIE 88.5 FM Tulsa, OK (Tulsa Cablevision) VE3SF 145.230 Toronto, Ontario Canada This list was compiled by Marty Smith, WD5DZC, and Bruce Paige, KB5ZRV. Check-ins, questions, or comments can be handled during the net by calling either Marty or Bruce at: Marty Smith, WD5DZC : (713) 467-9870 Bruce Paige, KB5ZRV : (713) 933-0488 Net suggestions, corrections, and additions can be made after the net by contacting Marty Smith at the number listed above and leaving a voice mail message, or by contacting Bruce via his packet radio address, KB5ZRV@F6CNB, or his Internet address, kb5zrv@amsat.org. Feel free to contact either Marty or Bruce if you are repeating the Houston AMSAT Net and are not included in the list above. [Info via Bruce, KB5ZRV] * APT SATELLITE REPORT * ======================== The following observations were made from a station in Germany located at 50.7 degrees North Latitude, 7.1 degrees East Longitude on 19-Jun-94: NOAA-9: APT 137.62 MHz On NOAA-10: APT 137.50 MHz On NOAA-11: APT 137.62 MHz On NOAA-12: APT 137.50 MHz On Meteor 2-21: APT 137.85 MHz On Meteor 3-5: APT 137.85 MHz On again Vis-APT of Meteor 3-5 is active again, transmitting good images from afternoon ascending orbits. Meteor 2-21 (the weak APT-transmitter) is drifting towards early morning. [Info via Peter Henne] * THANKS! * =========== Thanks to all those who sent messages of appreciation to SpaceNews, especially: IW1CXZ N2OWO N2XWF ZL3AHW KC5DVU ZR5JRB K8EF N9LTD Chris Rowan, Todd Whitmore * FEEDBACK/INPUT WELCOMED * =========================== Mail to SpaceNews should be directed to the editor (John, KD2BD) via any of the following paths: FAX : 1-908-747-7107 PACKET : KD2BD @ N2KZH.NJ.USA.NA INTERNET : kd2bd@ka2qhd.de.com -or- kd2bd@amsat.org MAIL : John A. Magliacane, KD2BD Department of Engineering and Technology Advanced Technology Center Brookdale Community College Lincroft, New Jersey 07738 U.S.A. <<=- SpaceNews: The first amateur newsletter read in space! -=>> /EX -- John A. Magliacane, KD2BD * /\/\ * Voice : 1-908-224-2948 Advanced Technology Center |/\/\/\| Packet : KD2BD @ N2KZH.NJ.USA.NA Brookdale Community College |\/\/\/| Internet: magliaco@pilot.njin.net Lincroft, NJ 07738 * \/\/ * Morse : -.- -.. ..--- -... -.. ------------------------------ Date: Thu, 30 Jun 1994 21:23:46 EDT From: ihnp4.ucsd.edu!swrinde!howland.reston.ans.net!europa.eng.gtefsd.com!sundog.tiac.net!usenet.elf.com!rpi!psinntp!arrl.org!usenet@network.ucsd.edu Subject: ARLD038 DX news To: info-hams@ucsd.edu SB DX @ ARL $ARLD038 ARLD038 DX news ZCZC AE36 QST de W1AW DX Bulletin 38 ARLD038 ------------------------------ Date: Thu, 30 Jun 1994 21:21:08 EDT From: ihnp4.ucsd.edu!library.ucla.edu!europa.eng.gtefsd.com!sundog.tiac.net!usenet.elf.com!rpi!psinntp!arrl.org!usenet@network.ucsd.edu Subject: ARLX018 Eastern VHF/UHF meet To: info-hams@ucsd.edu SB SPCL @ ARL $ARLX018 ARLX018 Eastern VHF/UHF meet ZCZC AX50 QST de W1AW Special Bulletin 18 ARLX018 ------------------------------ Date: Thu, 30 Jun 1994 21:22:02 EDT From: ihnp4.ucsd.edu!swrinde!howland.reston.ans.net!europa.eng.gtefsd.com!sundog.tiac.net!usenet.elf.com!rpi!psinntp!arrl.org!usenet@network.ucsd.edu Subject: ARLX019 Video's a winner To: info-hams@ucsd.edu SB SPCL @ ARL $ARLX019 ARLX019 Video's a winner ZCZC AX51 QST de W1AW Special Bulletin 19 ARLX019 ------------------------------ Date: Fri, 01 Jul 94 11:29:43 -0700 (PDT) From: ihnp4.ucsd.edu!usc!howland.reston.ans.net!sol.ctr.columbia.edu!deep.rsoft.bc.ca!mindlink.bc.ca!a10897@network.ucsd.edu Subject: Call-Sign Prefixes To: info-hams@ucsd.edu I am going to be travelling through the U.S. this summer, and I already posted a message asking whether my Canadian Amateur license is good in the U.S. as well, to which the answer was Yes. Apparently I have to identify myself with my callsign followed by the prefix followed by "\ Subject: Temp. Conversion Chart: F & C? > To: info-hams@ucsd.edu > While we're on the topic of conversions, can someone help me > out with some others that have been really boggling me? > MHz to KHz > Feet to Inches > Dollars to Cents > Also, what is that stuff that collects in your belly button > called? Converting inches to feet is simple, Doug. 1. Determine how many inches you want to convert to feet. For example, 24. Assign that to the variable, "I". 2. Determine how many toes are on the value you want to convert: feet. Assuming normality, for example, you might choose 10. Assign that to the variable "T". 3. You already know the factor for converting frequencies to antenna lengths, 468, since that was on the ham radio license test. Assign that to the variable "C". [Note - this project may be too difficult for Novice licensees.] 4. Insert the arbitrary constant 56160 to variable "V". 5. Compute the number of feet (F) by the formula: I x T x C / V = F Converting feet to inches is left as an exercise for the stupi^H^H^H^H^H student. See how easy the English system is, vs metric? I'm still working on simple formulas to help you on the other conversions. Metrics are harder. Paul Marsh up to his gills in a pint N0ZAU Omaha pmarsh@metro.mccneb.edu ------------------------------ Date: 1 Jul 1994 10:21:03 -0400 From: ihnp4.ucsd.edu!usc!cs.utexas.edu!convex!news.duke.edu!solaris.cc.vt.edu!news.ans.net!newstf01.cr1.aol.com!search01.news.aol.com!not-for-mail@network.ucsd.edu Subject: Help with No Scratch mag mount To: info-hams@ucsd.edu Jeff Kashinsky (jeff@sec.sel.sony.com) wrote: : I have a Larsen NMO mag mount and the plastic on the bottom is ripped. The : magnet has started scratching the car paint. : Suggestions of what to use to replace the plastic would be appreciated. My choice is the self-adhesive felt that is normally used to put under lamps and things to avoid scratching furniture. This stuff is cheap and available at any full-line drug store or hardware store. While this stuff is much thicker than an acetate sheet, I've rarely had problems with a Larsen mag mount & antenna blowing off--if anytime, usually by a semi passing in the opposite direction on a two-lane road when we're both doing about 60...I mean 55, and when we're both a bit too close to each other (and the antenna is on the left rear). After a rain or two, the felt mushes down, making for better magnetic hold. Danny Goodman AE9F/6 ------------------------------ Date: Fri, 1 Jul 1994 13:05:03 GMT From: ihnp4.ucsd.edu!usc!howland.reston.ans.net!gatech!news-feed-1.peachnet.edu!news.duke.edu!zombie.ncsc.mil!blackbird.afit.af.mil!fkilpatr@network.ucsd.edu Subject: Newbie license question -- change of address To: info-hams@ucsd.edu I recently took my tech exam (May 16), and I'm now waiting the long four months for my license. However, I moved this week, and I'm not sure if I should file a change of address with the FCC, or if I should just wait for the normal Post Office forwarding. Can anyone give me any guidance? Thanks Alex -- Alex Kilpatrick fkilpatr@afit.af.mil "If a kid asks where rain comes from, I think a cute thing to tell him is 'God is crying.' And if he asks why God is crying, another cute thing to tell him is 'Probably because of something you did.' -- Jack Handey ------------------------------ Date: Fri, 1 Jul 1994 17:44:55 GMT From: ihnp4.ucsd.edu!library.ucla.edu!csulb.edu!csus.edu!netcom.com!msadams@network.ucsd.edu Subject: Novice on-air CW practice To: info-hams@ucsd.edu brunelli_pc@delphi.com wrote: : Michael, : : are you lookig for a sked, or freq's for ARRL code practice? : : pete, n1qdq Pete, No, unfortunately my news reader deleted the body of this message as I was posting it. I am just looking for some people who are as apprehensive about code as I am who would like to do some on-air HF code practice together. I live in Los Angeles, and have an antenna for the 40, 15 and 10M bands, although some of the people who responded on the net said I should check out the 80M novice band. Michael Adams KE6BOO -- msadams@netcom.com ------------------------------ Date: Fri, 1 Jul 1994 09:03:11 From: ihnp4.ucsd.edu!usc!howland.reston.ans.net!gatech!udel!news2.sprintlink.net!news.sprintlink.net!indirect.com!s146.phxslip.indirect.com!lenwink@network.ucsd.edu Subject: Open Line Sunday! To: info-hams@ucsd.edu This Sunday, July 3, Ham Radio & More has open lines all hour. Call in and talk about whatever interests you in amateur radio. Whether you want to discuss a particular new FCC regulation or how to get a license or tell us how field day went with you, or what's your opinion on slow code, no code, etc., give Ham Radio & More a call this Sunday from 6 to 7pm EST on the Talk America Network in 22 cities and via satellite on spacenet 3, transponder 9, 6.8 audio. The toll free call-in number is 1-800-298-talk. Call 602-241-1510 for more information. 73, Len, KB7LPW PS Ham Radio & More is giving away a $100.00 gift certificate as well as magazine subscriptions this week. ------------------------------ Date: Fri, 1 Jul 1994 15:52:51 GMT From: ihnp4.ucsd.edu!agate!howland.reston.ans.net!vixen.cso.uiuc.edu!sdd.hp.com!saimiri.primate.wisc.edu!news.crd.ge.com!crd.ge.com!mallick@network.ucsd.edu Subject: QST H/Brew Isoloop To: info-hams@ucsd.edu In article <1994Jun29.175509.29439@ccd.harris.com>, drs@ccd.harris.com (Doug Snowden) writes: |> Andy Domonkos (domonkos@access.digex.net) wrote: |> : Anyone build the QST loop antenna from the May 94 issue? I understand |> : it can be resized for 40M. Anyone do that yet? |> |> : Andy N3LCW |> |> I built a 40 meter loop a few years ago. If you want to experiment with this |> sort of thing, I suggest you get a copy of Ted Hart (W5QJR) book about |> small high efficiency loop antennas. He came out with the book several years |> ago. I would guess that he did a lot of the research, experimentation and |> documentation that AEA (Isoloop) and others are now marketing. The QST article |> is just a variation of W5QJR's ideas. I didn't read the whole article, but |> I don't think the importance of low loss in the variable capacitor was stressed. |> W5QJR went so far as to sell a capacitor that was made out of copper plates |> with all the parts silver soldered together for low loss. |> |> 73's Doug, N4IJ |> |> -- |> --------------------------- |> | Doug Snowden | |> | N4IJ | |> | email: drs@ccd.harris.com | |> --------------------------- |> I'll second your comments. Hart's book is pretty good and points out what is important about building and using small loops. I took the relevant equations out of the book and programmed up a TK!Solver spreadsheet (you could do the same with MathCad or even Lotus) so I could fiddle with different designs. I never did get Hart's gamma match scheme to work, so I am now fiddling with the small coupling loop idea. I'm using a small vacuum variable cap I purchased from Surplus Sales of Nebraska to minimize capacitor losses. -- .... .. .... .. .... .. .... .. .... .. .... .. John A. Mallick WA1HNL E-mail: mallick@crd.ge.com GE Corporate Research and Development Phone: (518)-387-7667 (W) Schenectady, NY 12301 FAX: (518)-387-6560 (W) .... .. .... .. .... .. .... .. .... .. .... .. "Work like hell. Tell everyone everything you know. Close a deal with a handshake. And have fun." --- "Doc" Edgerton ------------------------------ Date: 1 Jul 1994 15:39:47 GMT From: ihnp4.ucsd.edu!swrinde!howland.reston.ans.net!wupost!news.utdallas.edu!rdxsunhost.aud.alcatel.com!aur.alcatel.com!aurxc7.aur.alcatel.com!ghoda@network.ucsd.edu Subject: WANTED: 2m or 440 X-miter & antenna To: info-hams@ucsd.edu Hi I am looking for a fairly cheep 2meter or 440 X-mit/Rec. which runs on at least 12watts. I'll be using it at all times for a repeater/phonepatch I am trying to construct. I also need a good dual band antenna for my hand held and another antenna for the phonepatch. Please reply to: ghoda@aurxc7.aur.alcatel.com Thanks... ------------------------------ Date: Fri, 1 Jul 1994 17:49:08 GMT From: ihnp4.ucsd.edu!library.ucla.edu!csulb.edu!csus.edu!netcom.com!msadams@network.ucsd.edu Subject: Wanted: Novice on-air CW practice To: info-hams@ucsd.edu Richard Spear (rspear@sookit) wrote: : michael - i also live in the la area and am a tech+ ... while i'd be happy : to set up a sched with you and others, i think that you will find that if : you call cq people out there will reply at your speed ... also, in most : cases if you respond to a cq the person at the other end ofthe call will : adjust to your speed. bear in mind that you will run into a few jerks, but : they are really rare. : if you are still interested in setting up a sched, let me know. : regards, richard kd6lwd : rspear@sookit.jpl.nasa.gov : all disclaimers apply Richard, Thanks for your offer. I'll see how it goes, and get back to you if things do not seem to work out. 73 de Michael, KE6BOO -- msadams@netcom.com ------------------------------ Date: 1 Jul 1994 17:22:38 GMT From: ihnp4.ucsd.edu!library.ucla.edu!europa.eng.gtefsd.com!news.msfc.nasa.gov!sims@network.ucsd.edu Subject: Where is the best place to install a low pass filter? To: info-hams@ucsd.edu tom_boza@ccm.hf.intel.com writes: >Can someone tell me where the best place is to install my >Drake 1KW low pass filter? > 1) Between my HF transceiver and my 1KW RF amp > 2) Between my 1 KW RF amp and my 1KW antenna tuner > 3) Between my 1KW antenna tuner and my antenna > 4) Sell it at the next ham fest > 5) Anywhere after the transceiver >Thanks, 73s Tom WB7ASR... >tom_boza@ccm.hf.intel.com The answer is 1. The reason is as follows: The transceiver is solid state and thus generates the most harmonics due to non- linear characteristics (this applies to all amplifiers). So if the the filter is between the rig and amp the harmonics from the rig will be attenuated and thus not have any chance to be amplified by the amp. The second reason is (assuming a tube amp) that the amplifier basically has a matching network on both the input and output of the amplifier, what you are doing when you tune the amplifier is matching the output impedance of the tubes (the amplifier) to the antenna (50 ohms). Since this tuning process has a small operating range (also known as bandwidth) the harmonics never make it out of the amplifier. Hope this helps. Herb -------------------------------------------------------------------------------- W. Herb Sims sims@sauron.msfc.nasa.gov NASA/MSFC/EB56 sims@saruman.msfc.nasa.gov Huntsville, AL 35812 sims@avdms8.msfc.nasa.gov KU0C Voice (205) 544 8581 PP-ASEL-IA FAX (205) 544 7499 -------------------------------------------------------------------------------- ------------------------------ Date: (null) From: (null) ------------------------------ Date: (null) From: (null) ------------------------------ Date: (null) From: (null) ------------------------------ End of Info-Hams Digest V94 #730 ******************************