home *** CD-ROM | disk | FTP | other *** search
- INFO-HAMS Digest Tue, 24 Oct 89 Volume 89 : Issue 796
-
- Today's Topics:
- ARRL 79: S.F. QUAKE UPDATE
- Consumer info?
- DIRECTION FINDING EQUIPMENT (SuperDF)
- Earthquake in SF!!!
- Guemes Island followup
- Heath 2060A Tuner review
- How Much Good Does Ham Radio "Emergency Preparedness" Do?
- IC-2S mods?
- Integrand "PC" cabinets
- Neutralizing Heathkit finals (6146/A/B woes)
- Noise Blankers
- SHORT WAVES
- Solar Power
- TM-701A MOD UPDATE
- Wondering about 455 kHz
- ----------------------------------------------------------------------
-
- Date: 24 Oct 89 04:49:04 GMT
- From: n8emr!gws@tut.cis.ohio-state.edu (Gary Sanders)
- Subject: ARRL 79: S.F. QUAKE UPDATE
-
- ==============================================================
- | Relayed from packet radio via |
- | N8EMR's Ham BBS, 614-457-4227 (1200/2400/19.2 telebit,8N1) |
- ==============================================================
-
-
- ARRL BULLETIN 78 ARLB078
- OCTOBER 23, 1989
-
- SAN FRANCISCO EARTHQUAKE COMMUNICATIONS UPDATE. THE ARRL SANTA
- CLARA VALLEY SECTION MANAGER ADVISES THAT AMATEURS SHOULD ACCORD
- TOP PRIORITY TO COMMUNICATIONS INVOLVING THE IMMEDIATE SAFETY OF
- INDIVIDUALS AND PROTECTION OF PROPERTY. SECOND PRIORITY SHOULD
- BE ACCORDED COMMUNICATIONS DIRECTLY RELATING TO THE PROVISION OF
- SHELTER, FOOD AND SAFETY TO THE HOMELESS. THIRD PRIORITY
- COMMUNICATION IS OUTGOING HEALTH AND WELFARE MESSAGES. FOURTH
- PRIORITY IS INCOMING HEALTH AND WELFARE MESSAGES. THE SECTION
- MANAGER THANKS AMATEURS FOR CONTINUING COMMUNICATIONS EFFORTS.
-
- --
- Gary W. Sanders (gws@n8emr or ...!osu-cis!n8emr!gws), 72277,1325
- N8EMR @ W8CQK (ip addr) 44.70.0.1 [Ohio AMPR address coordinator]
- HAM/SWL/SCANNER BBS (1200/2400/PEP) 614-457-4227
-
- ------------------------------
-
- Date: Mon, 23 Oct 89 13:23:44 -0700
- From: Doug Faunt N6TQS 415-688-8269 <faunt@cisco.com>
- Subject: Consumer info?
-
- Does anyone have anything good or bad to say about Madison Electronics
- Supply in Houston TX? They have the Kenwood TM731 for $599. until the
- end of November.
-
- Also, has anyone comments on running a 721/731 as a remote base?
- I've talked to several people who've had it work pretty nicely, and
- I think it would be real useful to be able to just use a HT, and move
- freely throughout a building, and have the 731, in a vehicle, with a
- good antenna, and in a good location, act as a remote base.
- 73, and thanx, doug
-
- ------------------------------
-
- Date: 23 Oct 89 22:25:48 GMT
- From: gem.mps.ohio-state.edu!ctrsol!uakari.primate.wisc.edu!ginosko!usc!merlin.usc.edu!aludra.usc.edu!keenan@tut.cis.ohio-state.edu (Robert N. Keenan)
- Subject: DIRECTION FINDING EQUIPMENT (SuperDF)
-
- >I just received literature for the SuperDF direction finder.
- >I first read about this product in the "Transmitter Hunting" book
- >then in "Mobile Radio Technology" magazine.
- >
- >Has anyone on the net tried the SuperDF? If so, please comment
- >on your experiences and you opinion of the quality of construction,
- >performance, etc.
-
- I do not own one myself, but I have gone T hunting many times with a friend
- who has one. The unit works very well for DFing on foot. It works by
- detecting changes in phase (I think), so as long as the signal is present,
- its level is not important. The guy I know who uses the Super DFer beats
- dopple scan teams very often, and he is the best DFer on foot that I know.
- From the times I have seen the Super DFer in use, I would buy one in a
- second if I had that kind of money.
-
- Robert, WU6L
- keenan@usc.edu
- WU6L@WB6YMH-2
-
- ------------------------------
-
- Date: 21 Oct 89 08:20:38 GMT
- From: hpl-opus!hpnmdla!roger@hplabs.hp.com (Roger Petersen)
- Subject: Earthquake in SF!!!
-
- Can anyone provide a report about how well the Bay Area hams responded to
- the earthquake?
-
- My roommate was listening to his scanner Tuesday night, and said that
- most of the activity on 2 Meters was people trying to figure out logistics --
- who, on what frequency, doing what. He commented that there was a lot
- more "noise" than "useful signal", implying that us hams weren't prepared.
-
- I was out of town all week, so I didn't have a chance to tune in.
- How smoothly did things go?
-
- Roger
- WB6NRS
-
- ------------------------------
-
- Date: 23 Oct 89 18:40:20 GMT
- From: hpda!hpcuhb!hpscdc!rkarlqu@ucbvax.Berkeley.EDU (Rick Karlquist)
- Subject: Guemes Island followup
-
- It seems to me that the rule about two islands being separated
- by foreign territory is referring to a case where either of
- the islands would have been a country by itself (being 275 miles
- from the mainland). In this case, you would have two instead of
- one country. I don't believe it is intended to make islands
- less than 275 miles away separate countries. The reason for the
- rule is apparently an extension of the rule that says once you
- have one island 275 miles away as a separate country, subsequent
- islands that are also 275 miles away need to be separated 500
- miles (or whatever the number is) from the first island.
- What they're saying is that foreign territory is a substitute
- for the 500 miles. Neither Guemes island or the other island
- is 275 miles away, so this rule never even comes into play
- in the first place. So Tad is taking the rule out of context.
-
- I think this admittedly poorly written rule is similar to
- the second amendment to the constitution that says
- something like:
-
- "A well regulated militia being necessary to the common
- good, the right of the people to keep and bear arms is
- not enfringed".
-
- Some people have claimed its OK to take the second half of
- the sentence out of context and claim the bearing of arms
- is a right of the individual not the militia. Again,
- admittedly it should have been written more clearly, but
- the courts have consistently refused to take it out of
- context. Hence, Don Search can use the same line of
- reasoning and still say he is a "strict constructionist."
-
- N6RK
-
- ------------------------------
-
- Date: Mon, 23 Oct 89 11:08:46 EDT
- From: Michael_Edelman%Wayne-MTS@um.cc.umich.edu
- Subject: Heath 2060A Tuner review
-
- In response to an inquiry:
-
- I bought a 2060A about a year back when I was running QRO and working
- on my WAN (worked all neighbors). I bought it on the advice of two
- locals who think it's the greatest thing since sliced cheese; I have a
- different opinion.
-
- First, there are a few parts that I think are *very* poorly engineered.
- The push-button switches on the front panel require a lot of odd patches;
- clipping a terminal strip and soldering it to the switch assembly was one.
- It's not clean construction. The knobs are cheesy and easy to strip; the
- counter assembly is pretty cheesy for a $300+ kit, too.
-
- Some of these faults may be a resulty of my ham-handedness; I had to be
- very careful when spinning the roller inductor. It could easily be spun
- past its stops, and then required removing the cover and diddling about
- to restore.
-
- Mine is for consigned for sale at a local store, replaced by a small MFJ.
- I always hear people slamming the MFJ line, but the darn things are well
- built. I may not be alone in disliking the 2060A; I saw a few advertised
- in the yellow sheets for under $175 and $200.
-
- As a side note, I picked up the 100W Heath tuner kit at a close-out deal
- at a local Heath store. Again, some parts are just too cheesy and underbuilt.
- The rotary switch can easily be rotated out of its keyed stop; the
- antenna terminals are #6 or #8 screws on a piece of phenolic- the kind
- you see used as a speaker terminal on cheap stereos. At least this one only
- cost me $20.
- 01001001 de ke8yy
-
- Wayne State University / 5925 Woodward / Detroit, MI 48202
- Internet: Michael_Edelman%Wayne-mts@um.cc.umich.edu
- KE8YY%Wayne-Mts@um.cc.umich.edu
- Bitnet: MEDELMAN@WAYNEST1
- fax: 1-313-577-5626 Landline: 1-313-577-0742
-
- ------------------------------
-
- Date: 22 Oct 89 08:18:22 GMT
- From: hpl-opus!hpnmdla!roger@hplabs.hp.com (Roger Petersen)
- Subject: How Much Good Does Ham Radio "Emergency Preparedness" Do?
-
- In rec.ham-radio, forrest@sybase.com writes:
-
- > For a long time I have watched and listened to many emergency
- > preparedness efforts that have taken place. I don't take part in
- > them because based on my experiences in several major earthquakes
- > and other lesser disasters, I've learned that most of this well
- > intentioned work doesn't amount to much. What usually happens is
- > that there is about 80% chaos, confusion, and needless running
- > around.
-
- My roommate listened on 2-meters the night after the quake, and had the
- same comment. Lots and lots of working out logistics (which frequencies
- for what, who, etc), and very little emergency traffic.
-
- I was out of town the whole week, so I couldn't tell him otherwise.
- I hope that things went more efficiently than he described.
-
- Roger Petersen
- WB6NRS
-
- ------------------------------
-
- Date: 23 Oct 89 18:52:16 GMT
- From: mcsun!sunic!sics.se!sics.se!klemets@uunet.uu.net (Anders Klemets)
- Subject: IC-2S mods?
-
- Does anybody know how to modify an IC-2S to the European or the American
- version?
-
- Thanks,
- Anders SM0RGV
- --
- klemets@sics.se
-
- ------------------------------
-
- Date: 23 Oct 89 20:39:08 GMT
- From: cadre.dsl.pitt.edu!km@pt.cs.cmu.edu (Ken Mitchum)
- Subject: Integrand "PC" cabinets
-
- In search of better RFI shielding, I am planning on replacing my 286
- clone's cabinet with one of the rack mount cabinets from Integrand.
- I have used their cabinets before, back in S100 times, and know they
- are of high quality.
-
- The only problem I am having is deciding on a configuration. The cabinet
- itself is inexpensive ($100), but the custom power supplies that Integrand
- sells run around $200 extra. It is difficult to tell from the drawings
- supplied by Integrand in its catalog just how difficult it would be to
- mount a "standard" supply in the cabinet.
-
- I would appreciate any information anyone has regarding this, particularly
- from individuals who have bought raw cabinets from Integrand.
-
-
- ------------------------------------------------------------------------
- Ken Mitchum MD KY3B
- Decision Systems Labs
- University of Pittsburgh
- km@cadre.dsl.pitt.edu
-
- ------------------------------
-
- Date: 23 Oct 89 21:12:05 GMT
- From: gem.mps.ohio-state.edu!ctrsol!uakari.primate.wisc.edu!aplcen!stda.jhuapl.edu!mjj@tut.cis.ohio-state.edu (Marshall Jose)
- Subject: Neutralizing Heathkit finals (6146/A/B woes)
-
- Rusty, et al.,
- For those of you hams who aren't afraid of electron tubes, take
- heart -- I'm still looking for the answer to this question about
- neutralization. I'm also going to try feedforward-minimization
- in the meantime. If there's anybody out there who has the answer,
- please pipe up. CUL,
-
- Marshall Jose WA3VPZ
- mjj@aplvax.jhuapl.edu || ...mimsy!aplcen!aplvax!mjj
-
- ------------------------------
-
- Date: 23 Oct 89 16:09:14 GMT
- From: hpda!hpcuhb!hpscdc!rkarlqu@ucbvax.Berkeley.EDU (Rick Karlquist)
- Subject: Noise Blankers
-
- Perhaps Yaesu knows something Kenwood doesn't. My Yaesu FT-757
- also has an *amazing* noise blanker that completely eliminates
- power line noise. I have many complaints about the 757, but
- whoever designed the noise blanker must know what he's doing.
-
- N6RK
-
- ------------------------------
-
- Date: 23 Oct 89 17:16:00 GMT
- From: inmet!benk@uunet.uu.net
- Subject: SHORT WAVES
-
- Again, I recommend the Sangean ATS-803A, which is sold in the U.S.A.
- as the Radio Shack DX-440. The '440 should set you back about $195.00.
-
- As for the times/frequncies of the Israeli Radio (Kol Israel), consult
- a copy of the "World Radio TV Handbook." (If I've got some time later today,
- I'll try to abstract some info. from the WRTH that might be of help to you.
-
- Good listening.
-
- -- Ben Krepp
-
- From uunet: uunet!inmet!benk
- From DDN: benk@inmet.inmet.com
-
- ------------------------------
-
- Date: 23 Oct 89 19:27:38 GMT
- From: zephyr.ens.tek.com!tekcrl!tekgvs!jans@uunet.uu.net (Jan Steinman)
- Subject: Solar Power
-
- <I took delivery on a Sovonics "25 watt" solar panel just before Field Day. We
- used it to charge Gel Cells and ran our 75m phone station and my video camera
- to tape some of the field day activities.>
-
- I have the Sovonics panel, as purchased from Antennas West, and am quite happy
- with it. I also have the 8A regulator they sell, and am not so happy. I gets
- quite warm -- I'd guess at least two or three of my hard-earned watts are going
- into heating the package. It makes clicking noises, so I assume it has a relay
- in it. I'd think a power MOSFET would do a better job! It also seems to stick
- sometimes, as I can see the charge LED dimly glowing at night sometimes.
-
- If anyone has a more efficient gel-cell regulator, I'd like to hear from you.
-
- Jan Steinman - N7JDB
- Electronic Systems Laboratory
- Box 500, MS 50-370, Beaverton, OR 97077
- (w)503/627-5881 (h)503/657-7703
-
- ------------------------------
-
- Date: Mon, 23 Oct 89 21:22 CDT
- From: SURESH KAGOO N9GSA/4S7??? <SKAGOO%MEMSTVX1.BITNET@CORNELLC.cit.cornell.edu>
- Subject: TM-701A MOD UPDATE
-
- THE KENWOOD TM-701A WILL ONLY CROSS BAND REPEAT ONLY ON SIMPLEX
- FREQUENCIES.
-
- DOES ANY BODY HAVE ANY MODS FOR THE KENWOOD TH75A HANDHELD DUAL BANDER
- ??? IF SO PLEASE POST OR E-MAIL THEM TO ME
-
- THANKS IN ADVANCE
-
- 73 DE N9GSA
-
- SURESH KAGOO MEMPHIS STATE UNIVERSITY, MEMPHIS TN.
- BITNET : SKAGOO@MEMSTVX1
- INTERNET : SKAGOO@MEMSTVX1.BITNET
-
-
- ------------------------------
-
- Date: Mon, 23 Oct 89 17:00:59 -0400
- From: jpb@ATHENA.MIT.EDU
- Subject: Wondering about 455 kHz
-
- Does anyone out there know how 455 kHz got to be such a popular IF ?
- Why 455, (as opposed to 450 or 500, e.g.)?
-
- Just curious.
-
- 73 de ka1rcv --- John Paul Braud (jpb@athena.mit.edu)
-
-
- ------------------------------
-
- Date: Mon, 23 Oct 89 17:43:35 -0900
- From: <FSPAM%ALASKA.BITNET@CUNYVM.CUNY.EDU>
-
- I just got a blurb in the mail today about a Local Area
- Wireless Network. The manufacturer is O'Neill
- Communications Inc. of Ralegh NC. Specifications in brief:
-
- Frequency: 902 to 928 MHz
- Speed: 38,400 bps
- Channels: 4
- Transmit power: 20 mW
- Modulation: spread spectrum
- Antenna: internal array (omnidirectional)
- Protocol: AX.25 (X.25 standard for radio) [Really!]
- Contention: Carrier Sense Multiple Access (CSMA)
- Coverage inside buildings: 10,000 sq. ft. (typical)
- Range unobstructed in space: 500 ft. (typical)
- FCC license: not required
-
- Photos show a box that looks like an external hard disk that
- plugs into the serial port of a PC, with special models
- available for printers and modems.
-
- Thoughts:
-
- 1. Looks like the 902 MHz band plan isn't going to matter
- one way or another to weak signal users.
-
- 2. Ham radio HAS contributed something to radio technology
- since SSB in the fifties.
-
- Phil Munts, N7AHL
- University of Alaska, Fairbanks
-
- ------------------------------
-
- End of INFO-HAMS Digest V89 Issue #796
- **************************************
-