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- Date: Fri, 12 Nov 93 19:37:56 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 V93 #1341
- To: Info-Hams
-
-
- Info-Hams Digest Fri, 12 Nov 93 Volume 93 : Issue 1341
-
- Today's Topics:
- * SpaceNews 15-Nov-93 *
- Abbreviating Dates
- Code software for the Mac?
- Domestic QSL Strategies
- Fun with Radio Shack
- Help with Tempo S5 HT
- Multiple YAGIS on mast
- NMO Help
- One Antenna Two
- Poor audio fix for HTs
- The League SUPPORTS Morse... - rec.radio.amateur.policy #6979 (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: 12 Nov 93 14:34:36 GMT
- From: news-mail-gateway@ucsd.edu
- Subject: * SpaceNews 15-Nov-93 *
- To: info-hams@ucsd.edu
-
- SB NEWS @ AMSAT $SPC1115
- * SpaceNews 15-Nov-93 *
-
- BID: $SPC1115
-
-
- =========
- SpaceNews
- =========
-
-
- MONDAY NOVEMBER 15, 1993
-
-
- SpaceNews originates at KD2BD in Wall Township, New Jersey, USA. It is
- published every week and is made available for unlimited distribution.
-
-
- * DOVE RECOVERY BEGUN *
- =======================
- The following is by Jim White, WD0E:
-
- DOVE is up and running on 2 meters. It is sending normal ASCII telemetry
- and short text bulletins on 145.825. A very quick look at telemetry
- indicates the s/c is basically healthy.
-
- The team of Bob Diersing, N5HAD, Bill McCaa, K0RZ, and myself have been
- working very intensively for about 10 days to create and test new software
- that allowed automated software loading via two meters in a half duplex mode.
- This replaces the 'ear-ack on s-band' method N4HY had used in the past that
- was so difficult as to be a barrier to recovery.
-
- We would like to have telemetry reports. Please send them to vk7zbx@KO-23,
- @ AO-16 or on internet vk7zbx@amsat.org or to me wd0e@amsat.org, or
- CI$ 71477,546. The most recent version of TLMDCII (3-8-92) will decode
- and record DOVE telemetry very nicely.
-
- After we are sure the satellite is stable in this configuration and the
- power targets are established, the next step will be to load up through
- PHTX and test the voice module. Depending on the condition of the s/c
- and other issue, this could take several weeks.
-
- It'd like to express sincere thanks to Bob Diersing for all of his hard
- work creating a RAM loader, and Bill McCaa for the many passes of s-band
- and two meter receive he provided (often late into the night). It could
- not have been done without their enthusiastic efforts.
-
- Thanks also to Harold Price, NK6K, for providing the development system
- hardware, software, and a good deal of coaching. His contribution was
- invaluable.
-
- Given a reasonably healthy s/c, I'm confident we can make DOVE talk as I
- described at the AMSAT-NA Space Symposium in Dallas a few weeks ago.
-
- Jim White
- wd0e@amsat.org
-
- [Story via PACSAT-OSCAR-16]
-
-
- * PACSAT-OSCAR-16 STATUS *
- ==========================
- PACSAT-1>AMSAT <UI>:
- 02 November 1993
- Monthly WOD collection by week
- 1) Array currents 2)Temperatures 3)Bus/Battery
- AO16 Command Team <WJ9F>
-
-
- * WEBERSAT-OSCAR-18 NEWS *
- ==========================
- WEBER-1>CAST <UI>:
-
- 06-NOV-93
-
- *Collecting and Sending WOD
-
- Week4: Temps & Impact Ch# 14 2F 30 35 3B 40
-
- *New Images
-
- *Monday, New Spectrum
-
- I3/EA2CLS
-
-
- * LUSAT-OSCAR-19 STATUS *
- =========================
- LUSAT-1>AMARG <UI>:
-
- October 16.
-
- BBS is open.
- Directory Broadcast feature is available.
- Use PB version 920430p.
- Enjoy!.
-
- LU8DYF, LO-19 command station.
-
-
- * OSCAR 20 SCHEDULE CHANGE *
- =============================
- Effective December 1, 1993, the Fuji-OSCAR 20 satellite will change its
- digital/analog operating schedule. At present, the satellite functions as
- a packet BBS every day except Wednesday when it switches to the analog
- transponder (CW/SSB) mode for approximately 24 hours.
-
- Beginning December 1, at 0843 UTC, OSCAR 20 will be switched to the analog
- mode (Mode JA) where it will remain for one week. On December 11, at 07:51
- UTC, it will be switched back to the digital BBS mode (Mode JD) for one week.
- The modes will continus to alternate on a weekly basis until further notice.
-
- The December operating schedule is as follows:
-
- Mode JA-Analog : 01-Dec-93 at 08:43 UTC through 08-Dec-93 at 07:16 UTC
- Mode JD-Digital: 08-Dec-93 at 07:16 UTC through 15-Dec-93 at 07:41 UTC
- Mode JA-Analog : 15-Dec-93 at 07:41 UTC through 22-Dec-93 at 08:05 UTC
- Mode JD-Digital: 22-Dec-93 at 08:05 UTC through 29-Dec-93 at 08:30 UTC (+/-)
-
- OSCAR 20 Frequencies:
-
- Digital Uplink : 145.850, 145.870, 145.890, 145.910 MHz
- Digital Downlink: 435.910 MHz
-
- Analog Uplink : 145.900 to 146.000 MHz
- Analog Downlink : 435.800 to 435.900 MHz
-
- The analog transponder inverts uplinked signals. LSB on the uplink becomes
- USB on the downlink. A signal in the lower portion of the uplink passband
- appears in the upper portion of the downlink passband.
-
- The decision to change the schedule was made by Toshiyuki Kondoh, JR1NVU,
- who is in charge of FO-20 operations. By providing a full week of analog
- transponder time, the OSCAR 20 command team hopes to encourage more hams to
- use this mode.
-
- The Japan Amateur Radio League offers a "Fuji Award" to any amateur making
- at least 10 contacts via OSCAR-20 Mode JA. More details on this award will
- be relayed as they become available from the JARL.
-
- [Info from Fujio Yamashita, JS1UKR, via W1AW and the ARRL]
-
-
- * AMSAT-OSCAR-21 STATUS *
- =========================
- RUDAK2>BEACON <UI C>:
- ++ Hi, this is the RUDAK-II experiment on AMSAT OSCAR 21 ++
-
- RUDAK2>BEACON <UI C>:
- ***** New Modes ahead *****
- * The current schedule is about to change *
- * soon. New TX modes will be installed. *
- * Stay tuned! 73 de RUDAK-Team *
-
-
- * THANKS! *
- ===========
- Thanks to all those who sent messages of appreciation regarding SpaceNews,
- especially:
-
- N3NCS ZS5FR AA6CK G6YPK NF6H F9ZY
-
-
- * 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.ocpt.ccur.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: kd2bd@ka2qhd.ocpt.ccur.com
- Lincroft, NJ 07738 * \/\/ * Morse : -.- -.. ..--- -... -..
-
- ------------------------------
-
- Date: 12 Nov 93 23:39:35 GMT
- From: news-mail-gateway@ucsd.edu
- Subject: Abbreviating Dates
- To: info-hams@ucsd.edu
-
- The net has recently seen a bit of good-natured (?) joshing about who is out
- of step on abbreviating dates... I've gone to the unassailable authority in
- such matters, my MS-DOS User's Guide and Reference ......
-
- Date in words: The fifteenth day of December in the year one thousand nine
- hundred ninety three.
-
- Abbreviated Countries where used
- ------------ ---------------------
- 12/15/1993 USA
- 15/12/1993 Belgium, Spain, Italy, United Kingdom, Brazil, International
- English, Latin America
- 15.12.1993 Finland, France, Germany, Norway, Switzerland
- 15-12-1993 Denmark, Netherlands, Portugal
- 1993-12-15 Canada(French), Hungary, Yugoslavia, Czechoslovakia, Sweden,
- Poland
- Note: Doesn't Japan use something like the last format (above)?
- It also seems to me that following is true...
- 19931215 American National Standards Institute (since it collates
- directly without any special treatment).
-
- Who's out of step?
-
- 73, Bob W3OTC
-
- >>>>> Not a reflection of my employer's views, if any.
-
- ------------------------------
-
- Date: Thu, 11 Nov 93 14:08:46 GMT
- From: mnemosyne.cs.du.edu!nyx!jwiggins@uunet.uu.net
- Subject: Code software for the Mac?
- To: info-hams@ucsd.edu
-
- Just passed my Technician exam (no license yet) and I want to prepare
- for the code tests. I have a PC at work and have a fairly nice shareware
- program for it (Super Morse). Are there any snazzier programs
- available for the PC (free, share, or commercial)? I have a Mac at home
- and would like to practice there (I really ought to be working at work!).
- Does anyone know of any shareware or commercial programs that will teach
- code on the Mac?
-
- Thanks,
- Joe
-
- ------------------------------
-
- Date: 10 Nov 1993 08:21:11 -0500
- From: noc.near.net!genrad.com!genrad.com!not-for-mail@uunet.uu.net
- Subject: Domestic QSL Strategies
- To: info-hams@ucsd.edu
-
- In article <1993Nov10.022503.20167@ke4zv.atl.ga.us> gary@ke4zv.UUCP (Gary Coffman) writes:
- >In article <Charles.R.Hohenstein.1-091193111547@oldmac14.debartolo.lab.nd.edu> Charles.R.Hohenstein.1@nd.edu (Charles R. Hohenstein) writes:
- >>3. Suppose that an amateur doesn't even know that his call book address is
- >>invalid. How can I or anyone else let him know, if the whole problem is
- >>that the guy can't be reached? Maybe the League should share the last known
- >>address for ARRL members, but that sounds like a lot of work.
- >
- >It also wouldn't be a popular idea with some League members. Divulging
- >mailing lists is a sore point with some. They consider that confidential
- >information. It wouldn't be surprising if a large number of amateurs didn't
- >know whether their callbook address were correct or in error. Take me for
- >example, I haven't bought a new callbook since 1967. I recently bought the
- >SAM database, and my address is correct, but between 1968 and 1992 I have
- >no idea whether the callbook was printing correct information or not.
-
- This would almost definitely not be a popular idea. However, the fact of the
- matter is, ARRL DOES in fact probably have the most up-to-date info available
- for hams. How you ask? Simple. The Incoming QSL bureau sends foreign cards
- to US hams. Where do they get their information?
- Answer:
- 1. US Callbook (most recent one available)
- 2. Buckmaster
- 3. From the ham himself! Normally, the ham wants the
- bureau to know where to send his foreign QSL cards.
- 4. From the US Postal Service! When the sorter sends out
- cards to an invalid address, quite often, it will
- get returned, but with a "forwarding address expired"
- tag on it, WITH the new forwarding address!
-
- How does this help us, the hams? Well, I believe ARRL sends this type of
- information to the US Callbook so that the next edition is more up-to-date.
- I KNOW I send the data to US Callbook (I'm one of those volunteer sorters).
- And of course, ARRL has the data in their "database"....'course that
- "database" may be spread out among 260 different individuals spread out over
- the entire US....so that may not be too helpful.
-
- :-)
-
- Diana
- The "1Y" sorter
-
-
- --
- ->Diana L. (Syriac) Carlson dls@genrad.com Ham: KC1SP (Sweet Pea) <-
- ->I'D RATHER BE FLYING! P-ASEL, INST CAP: CPT, Freedom 690 Mobile<-
- ->AD ASTRA, PER ASPERA Airplane: None :-( <-
- ->GenRad, MS/6, 300 Baker Ave, Concord, Mass. 01742 (508)369-4400 x2459 <-
-
- ------------------------------
-
- Date: 10 Nov 1993 06:01:48 -0700
- From: orca.es.com!cnn.sim.es.com!ds9.sim.es.com!not-for-mail@uunet.uu.net
- Subject: Fun with Radio Shack
- To: info-hams@ucsd.edu
-
- What about just using the $3 coupon for the catalog?
- --
- | Harrison Cooper | email : hcooper@javelin.sim.es.com |
- | SP Hardware Design | Phone : 801-582-5847 ext 3275 |
- | Evans & Sutherland Computer Corp. | Radio : N7KST 147.04 R, 145.49 R |
- | Salt Lake City, Utah 84158 | Davis County ARES 147.42 S |
-
- ------------------------------
-
- Date: 10 Nov 93 11:41:05 CST
- From: library.ucla.edu!europa.eng.gtefsd.com!howland.reston.ans.net!vixen.cso.uiuc.edu!moe.ksu.ksu.edu!engr.uark.edu!news.ualr.edu!eivax.ualr.edu!heiss@network.ucsd.edu
- Subject: Help with Tempo S5 HT
- To: info-hams@ucsd.edu
-
- Hello:
-
- The wires on the speaker/mic connector came loose and I need to reattach
- them. I have tried to work through the proper connections on my own but
- have not been able to arrive at the correct solution. If anyone has the
- schematic for the proper connection I would appreciate it very much. I
- would also like to find a service manual for this Tempo S5.
-
- Thanks Larry -- KC5CVL
-
- ------------------------------
-
- Date: Thu, 11 Nov 1993 21:10:05 GMT
- From: sdd.hp.com!vixen.cso.uiuc.edu!howland.reston.ans.net!darwin.sura.net!fconvx.ncifcrf.gov!fcs260c!mack@network.ucsd.edu
- Subject: Multiple YAGIS on mast
- To: info-hams@ucsd.edu
-
- In article <CGC5GI.C9t@cdsmail.cdc.com> molson@bml4380.cpg.cdc.com (Mark Olson) writes:
- >
- >
- > I've got a 2m and a 70cm Yagi on the same mast, both
- >vertically polarized. I originally had them spaced ~15cm
- >apart, and found that while the 2m had acceptable SWR,
- >the 70cm had > 2:1 SWR at the frequencies I wanted to use.
- >After fiddling around with the gamma match I found that
- >no amount of tuning would reduce the SWR. So, I moved
- >the antennas further apart, about 30cm, and now the
- >SWR ranges between 1.5:1 and 1.9:1.
- >
- > I still have a feeling that the antennas are too close together.
- >As I see it, I have two options: mount the antennas crosswise
- >on the mast, which is undesirable, because I want them both
- >pointing in the same direction, or to increase the spacing. This
- >will cause me to use a longer mast or to have one antenna
- >fairly close to the rotor, which might cause more problems.
- >My question: is there a general rule of thumb for yagi separation
- >distance, or is what I am doing a no-no?
- >
- >Thanks in advance for the advice,
- >
- >Mark Olson AA0MH
- Dear Mark,
- There is a rule of thumb (which I've forgotten) and one antenna
- (can't remember whether smaller or larger) will see the other, but
- not the reverse. Also a vertical yagi on the mast will see the mast
- and be unhapy (the mathematical term for it). How about putting a
- cross boom on the maast and putting but antennas on the horizontal
- corss boom?
- Joe Mack (NA3T)
- mack@ncifcrf.gov
-
- ------------------------------
-
- Date: Tue, 9 Nov 1993 22:08:40 GMT
- From: cs.yale.edu!theodolite!ksmith@yale.arpa
- Subject: NMO Help
- To: info-hams@ucsd.edu
-
- Yesterday I ordered two NMO mounts (Larsen) and 1/4 wave whips (2m/440, black,
- Larsen) for my 1990 Isuzu Trooper since I've grown tired of mag-mounts and
- am ready to bore holes.
-
- Anything I should look out for? I've got a friend at the local county
- communications shop who's agreed to help with the install, and his plan
- is to use the Motorola bit without removing the headliner. The headliner is
- a one piece deal that looks like it would be impossible to reinstall, so I'm
- definately up for not removing it if at all possible. He seems to think he
- can fish the cables from the holes in the roof.
-
- I'm planning to take the cables down the column between the front and
- rear passenger doors on the right side, fishing them out the bottom near the
- seat belt retractor. Has anyone done this, and is there anything to watch out
- for (dome light wiring, etc?)?
-
- Post or reply via email, either is fine.
-
- -Kirk J. Smith, KD6RCT
-
- ------------------------------
-
- Date: 10 Nov 1993 08:36:37 -0500
- From: swrinde!emory!europa.eng.gtefsd.com!howland.reston.ans.net!vixen.cso.uiuc.edu!sdd.hp.com!col.hp.com!srgenprp!news.dtc.hp.com!hplextra!hpscit.sc.hp.com!hpuerca.atl.hp.com!hpuerca!edh@
- Subject: One Antenna Two
- To: info-hams@ucsd.edu
-
- In <2boi1r$6pr@vlsi.agcs.com> romanenkod@agcs.com (Dan Romanenko) writes:
-
- >In the process of looking at dual band (2m/70cm) mobile radios, I have
- >observed some radios come with one antenna lead for both bands,
-
- It has a built in duplexor.
-
- >1. From a two antenna lead, run separate coax, mount two single band
- > antennas on the vehicle.
- > Adv: - Each antenna tuned for a particular band
-
- Also, you can optimise your antenna selection: I have used the
- cross-band repeat function of my Alinco DR-590 on several occaisions
- where I was close (relatively) to my truck, but the repeater being
- used for the public service event was pretty far away. I left the
- 1/4 band 70cm antenna in place, but unscrewed the 2m antenna and
- replaced in with a hefty gain antenna (that I don't like to drive
- around with all the time because of its length). Used either my
- IC-4AT or the 444 side of my DJ-580 for the input. Worked so well,
- other hams along the route began using my "portable repeater" to
- reach the net control too.
-
- > Dis: - Two antennas on top of vehicle
- > - Two coax runs required
-
- I never felt like two coax runs was a disadvantage: my bet is that
- I can loose half my antenna system and still be on the air!
-
- >2. From a two antenna lead, run into a duplexer, run coax to dual band
- > antenna.
- > Adv: - Single antenna on vehicle
-
- Okay, until something whacks it. :-)
-
- > Dis:
-
- Contrary to the nest statement, I found I could put up two good
- antennas cheaper than I could buy a good dual-band antenna and
- a good duplexor! These things are pricey items for equivilent
- gain, design, quality, etc. compared to the single band ones.
-
- >In pricing the two options, the cost for each setup would be
- >about the same.
-
- See my note above.
-
- > Still waiting for my license...
-
- Here's hoping your license comes soon -- 73
- Ed Humphries N5RCK
- HP Atlanta GA
-
- ------------------------------
-
- Date: Wed, 10 Nov 93 21:54:29 EST
- From: noc.near.net!news.delphi.com!usenet@uunet.uu.net
- Subject: Poor audio fix for HTs
- To: info-hams@ucsd.edu
-
- Guillermo Gosset <gosset@pbr322.ceingebi.unam.MX> writes:
- > A common complaint about the newer micro handhelds is the low volume audio.
- > There is a fix to that problem, which I have applied to my Kenwood TH-78A.
- > I use a CD Player-to-Cassette adapter (Radio Shack 12-1951), it plugs into
- > the headphone jack of the HT and the adapter loads like a cassette into the
- > car stereo system. With this setup one hears the HT audio amplified by the
- > car stereo, so there is plenty of power available. Also it is possible to
- > modify audio tone with the stereo controls.
-
- I saw that thing in the Radio Shack catalog and I'm really curious to learn
- how well it works. I'm afraid the blasted wire will get hung in the cassette
- mechanism and ruin an otherwise perfectly good Kenwood car stereo. :-)
-
- The cassettes slide in sideways in my Kenwood, then drop down into the
- cassette mechanism. From the picture in the catalog, it appears the wire
- comes out of the back of the cassette, which means it'll be halfway in
- the cassette mechanism -- an invitation for disaster in my opinion.
-
- -- Greg KE4DPX
-
- ------------------------------
-
- Date: 13 Nov 93 01:03:32 GMT
- From: paperboy.ids.net!anomaly.sbs.com!kd1hz@uunet.uu.net
- Subject: The League SUPPORTS Morse... - rec.radio.amateur.policy #6979
- To: info-hams@ucsd.edu
-
- In article <2c0pugINNbgf@tonto.ksu.ksu.edu>,
- cbr600@tonto.ksu.ksu.edu (Jeremy L. Utley) writes:
-
- > Have you ever tried explaining to them that Amateur Radio has it's own set of
- > operating practices, different from CB, and show them what those practices
- > are???
-
- Yup. The last one I mentioned this to told me to "fuck off". I was even
- nice enough to call him on the phone instead of mentioning it on the air
- where he might get offended.
-
- Just goes to show you what the 'no-clue' license did in RI...
-
- > And the No-Clue moniker is NOT appreciated, because to the ordinary reader
- > of this
- > group, it implies No-Code = No-Clue.
-
- Oh well, that's their problem.
-
- MD
- --
- -- Michael P. Deignan, KD1HZ -
- -- Internet: kd1hz@anomaly.sbs.com - I never tell the truth, because I
- -- UUCP: ...!uunet!anomaly!kd1hz - I don't believe that there is such
- -- AT&TNet: 401-273-4669 - a thing...
-
- ------------------------------
-
- Date: 13 Nov 93 03:03:38 GMT
- From: ogicse!uwm.edu!msuinfo!pacific!cravitma@network.ucsd.edu
- Subject: The League SUPPORTS Morse... - rec.radio.amateur.policy #6979
- To: info-hams@ucsd.edu
-
- In article <1993Nov13.010332.17160@anomaly.sbs.com> kd1hz@anomaly.sbs.com (Rev. Michael P. Deignan) writes:
- >> And the No-Clue moniker is NOT appreciated, because to the ordinary reader
- >> of this
- >> group, it implies No-Code = No-Clue.
- >
- >Oh well, that's their problem.
-
- I disagree, simply because it is not true. Also, you seem to imply
- that No-Code = CBer, which is also incorrect.
-
- /MC
-
- --
- Matthew Cravit | "So I sent him to ask of the
- Michigan State University | owl, if he's there, how to
- East Lansing, MI 48825 | loosen a jar from the nose
- E-Mail: cravitma@cps.msu.edu | of a bear..."
-
- ------------------------------
-
- Date: 12 Nov 1993 11:09:46 -0500
- From: psinntp!satelnet.org!satelnet.org!usenet@uunet.uu.net
- To: info-hams@ucsd.edu
-
- References <VBREAULT.93Nov8111110@rinhp750.gmr.com>, <2bogl8$km0@oak.oakland.edu>, <VBREAULT.93Nov9134406@rinhp750.gmr.com>
- Subject : Re: Fun with Radio Shack
-
- Its not just the RS salesman. I was in RS the other day to return
- something and I witnessed the most amazing thing.
- A customer was talked into buying a $19.95 service policy on a $24.95
- universal remote control. It took all of FIVE seconds for the sales pitch.
- Maybe the droids aren't as dumb as we think.
-
- Scott Pallack KJ4WT/ex-KB4TR/ex-WB9MTA/ex-WA2GLH/ex-WN2GLH
- "You mean I qualify for QCWA? But I'm only 39. Scary, isn't it."
- skybird@satelnet.org
-
- ------------------------------
-
- Date: 10 Nov 1993 16:01:00 -0800
- From: library.ucla.edu!europa.eng.gtefsd.com!howland.reston.ans.net!cs.utexas.edu!asuvax!chnews!ornews.intel.com!ornews.intel.com!not-for-mail@network.ucsd.edu
- To: info-hams@ucsd.edu
-
- References <CGA8n6.4q0@ryn.mro4.dec.com>, <CGAAr2.F14@ncifcrf.gov>, <CGArCy.77w@ryn.mro4.dec.com>ex
- Subject : Re: Modify a TV antenna?
-
- In article <CGArCy.77w@ryn.mro4.dec.com> randolph@est.enet.dec.com (Tom Randolph) writes:
- >
- >In article <CGAAr2.F14@ncifcrf.gov>, mack@fcs260c.ncifcrf.gov (Joe Mack) writes...
- >>Assuming the point is to have a 2m antenna, rather than the object being
- >>to modify an existing antenna, why not get a design (somewhere, ARRL handbook
- >>if nowhere else), by the boom feedthroughs and brackets from say Rutland
- >>Arrays (advertise in QST, Tom says he sells the hardware if you want it),
- >>buy some 6061 Al tubing and rod from your local metal tubing supply
- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
- Ha! Have you ever tried this? They are NOT interested in your puny order
- and will let you know in no uncertain terms when you are quoted the cost of
- a single rod or you are brought to understand their minimum order terms.
- I was quoted $80 for a small tube as an example. I now buy all the busted
- and broken antennas at swap meets for their metal.
-
- >Yah, I think if I were to do it over, I'd just buy the tubing and build it.
- >Drilling out all those rivets was a fair amount of work.
-
- Well good luck finding the tubing. I can't see what's so terrible about using
- the log periodic as-is. The Radium Shack VHF-UHF special should make a great
- directional scanner antenna and will cover 6 meters to 222 Mhz as well I bet.
- The challenge is to come up with a good broad banded match suitable for
- transmitting. I wouldn't be beyond resorting to twin lead but how do you
- match at the rig end? There are VHF antenna tunas and I suppose you could
- wind a serious bifilar air balun somehow.
- I was disappointed with a recent ham rag article that suggested complete
- disassembly of a log periodic and reassembly into a classic yagi which had
- non-optimum dimensions (just like the League books).
-
-
-
-
-
- --
- zardoz@ornews.intel.com WA7LDV
-
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- End of Info-Hams Digest V93 #1341
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