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Subject: INFO-HAMS Digest V89 #937
To: INFO-HAMS@WSMR-SIMTEL20.ARMY.MIL
INFO-HAMS Digest Mon, 27 Nov 89 Volume 89 : Issue 937
Today's Topics:
A Computing Decision: Apple vs. IBM
DELETE NANE FROM MAILING LIST
ECPA (was: Military aircraft callsigns)
Free Vacuum Forever!
How to save your car's electrical stuff?
Oldtimers: TV Ads Save Amateur Radio?
RS Discone? To buy or not to buy?
Termination of Info-Hams
----------------------------------------------------------------------
Date: Mon, 27 Nov 89 13:12:43 EST
From: "Gary F. Kendall" <KENDALLG@VTVM1.CC.VT.EDU>
Subject: A Computing Decision: Apple vs. IBM
I'd like some general input from our fine studio audience here... 8)
Hopefully within the next few months I'm going to buy myself a decent PC system
to use at home. In addition to the 'usual' software (word processing, spread-
sheet, terminal emulation, etc.) I'd like to be able to use it for ham radio as
well (like packet, station logs, etc.). My dilemma is whether a Macintosh
would *really* be worth the extra $$$ in comparison to an IBM-compatible
system, especially in terms of available 'plug-in' hardware boards (I guess I'd
have to go with the Mac II for that capability). I've worked with both
systems; I thing the Mac is more 'user friendly' but I haven't dabbled
seriously enough with either system to know what they can really do (I have to
buy something that my wife can use, too!)
Any input would be most appreciated. Thanks.
Acknowledge-To: <KENDALLG@VTVM1>
------------------------------
Date: Mon, 27 Nov 89 12:45:26 CST
From: kevin@ncsc.navy.mil (Venturella)
Subject: DELETE NANE FROM MAILING LIST
PLEASE DELETE MY NAME FROM YOUR MAILING LIST.
THANK YOU
------------------------------
Date: 27 Nov 89 18:51:10 GMT
From: microsoft!clayj@uunet.uu.net (Clay Jackson)
Subject: ECPA (was: Military aircraft callsigns)
We live right underneath a Cell-Phone tower (about 150' as the RF travels).
A while back, we started "hearing" interference on one of the channels on
our baby monitor (49.??? MHz), after about 6 months of trouble free
operation. About all we heard was "fuzz", with some occasional breaks.
I got curious, and started playing around with our cordless phone, which
is also at approximately 49.??? MHz. After some experimentation, I
discovered that on ONE of the channels (I forget the extact freqs, but it
was close to the baby monitor freq), if the channel was "quiet" (for example
if I called my modem line and left the line open with nothing on it) I could
hear the same "interference", very weakly, but also VERY clearly. It
turned out to be cell-phone. Well, a bit of math told us that the frequencies
of both the baby monitor and the portable phone, when multiplied by
an appropriate factor (I forget the exact numbers) fall right in the middle
of the cell-phone allocation.
After discussing theis with a couple of ham friends (I'm just a wanna-be
right now), I decided to all the local cell-phone company and report
this to them (on the theory that since the tower has been there (and
operational) since before our house, and the problem just started, they
might have a bad/marginal piece of equipment, like a bad local oscillator
in a transmitter). After working my way through the receptionist and
two layers of PR flacks, I received a call from a LAWYER, the
conversation went something like this (not an EXACT quote, but close
enough, particularly the parts abut "our" frequencies):
"According to our engineers, the ONLY way you could be receiving any
cellular phone transmissions is with a radio tuned to our frequencies.
Of course, any such monitoring is illegal, and if you keep it up, we'll
be required to have you prosectuted. Are you aware of the "Communications
Privacy Laws?"
After assuring him that I was, I asked him what HIS qualifications were to
make a statement like the one above. He hemmed and hawed, and talked about
how "good our engineers are", and other such nonsense.
After I told him three or four times that I did NOT have a scanner that
was capable of receiving those frequencies, and that I would NOT "talk
about what you heard", I just thanked him for calling me and gave up.
That was a or so ago. I wonder if the "scanner police" are going to
come knock at my door some nite?
(I'm sure glad I didn't do "that" mod to my Pro-2004).
Clay Jackson
Microsoft
------------------------------
Date: 27 Nov 89 17:02:17 GMT
From: mfci!rodman@uunet.uu.net (Paul Rodman)
Subject: Free Vacuum Forever!
>
>Paul and Mark:
>
>I could not agree more but you should read the Electronic Communications
>and Privacy Act carefully. Further, don't get caught by a sheriff in
>certain New Jersey counties with a 2 meter rig that is CAPABLE of receiving
>police communications or they will charge you with a crime and put you
>in the klink. This is being fought here but these are the facts, as
>despicable as they seem to hams and shortwave listeners and scanner buffs.
>
I'm quite aware that what I belive is right and what is law do not
agree, but thanks for your concern/warning anyway.
Cheers from Ct,
pkr
{ where radar detectors are "illegal" to use and the
state police has been illegally taping all outgoing calls for
years .....:-( }
------------------------------
Date: 27 Nov 89 18:20:51 GMT
From: cica!ctrsol!samsung!cs.utexas.edu!wuarchive!usc!merlin.usc.edu!girtab.usc.edu!cyamamot@tut.cis.ohio-state.edu (Cliff Yamamoto)
Subject: How to save your car's electrical stuff?
In article <1989Nov27.160950.13937@sj.ate.slb.com> poffen@molehill writes:
>My friend bought a Mazda MX-6 last year. Earlier this year the regulator on
>the alternater went berserk. As near as the dealer can figure, the voltage
>out of the alternater probably went as high as 100V! Everything, and I mean
>EVERYTHING electrical in the car blew out. Virtually every light bulb, all of
>the computers (engine, transmission, turbo boost, etc) blew out. The stereo
>smoked, the air conditioner fryed, the windshield wiper motor melted, the
>battery exploded. In addition, several wiring harnesses burned up.
>
>Russ Poffenberger DOMAIN: poffen@sj.ate.slb.com
This got me thinking about the audio/ham-radio gear I have installed in my
car. Can anyone confirm if the following would work:
(-) 12 Vdc (+) 30 Amp
+--- battery ---o-fuse-o--+----> to your favorite & expensive equipment
| |
| -
| ^ 30 Amp +15 Vdc Zener diode ( just match the
| | diode rating with
+-------------------------+----> car chassis the fuse rating )
Are there any better ideas out there? What can be done to clamp a large
voltage surge or at least blow out the fuse when a surge occurs?
Thanks,
Cliff
------------------------------
Date: 27 Nov 89 16:55:37 GMT
From: vsi1!wyse!stevew@apple.com (Steve Wilson xttemp dept303)
Subject: Oldtimers: TV Ads Save Amateur Radio?
In article <AZPsPQG00WB6EekdZv@andrew.cmu.edu> kg19+@andrew.cmu.edu (Kurt A. Geisel) writes:
>I seem to remember in my very early youth (12 years or younger, I
>can't remember exactly) there were a series of TV ads for Amateur Radio.
>I saw them before I knew what Amateur Radio was, but I still remember
>them and I think at least one of them starred Dick Van Dyke. Do any
>"oldtimers" remember these?
>
>What I am wondering is A) who sponsored these (ARRL?) and B) why were
>they run at the time? Was there a lull in membership back then too?
>Do you think TV or radio ads would do anything today? Are they even
>affordable today?
Am I that old? I believe the adds were sponsored by the ARRL(don't swear
to that one) but they were done by Mr. Van Dyke as a favor to a long-time
associate (I think his manager) who was a ham. I believe the spots
were done in the late 70's as part of the League's Tune-in-the-World
promotion effort of amateur radio. Gee, everyone who blames the league
about not attempting to grow our numbers always seems to forget that
little effort? Seems thats about when we had the greatest spurt in our
growth as I recall...I would guess they were aired as public service spots.
As I further recall, you usually only saw them after 11:00pm ;-)
73's de Steve KA6S
------------------------------
Date: Mon, 27 Nov 89 15:05:47 GMT
From: "Pete Lucas, NERC-TLC, Swindon." <PJML%IBMA.NERC-WALLINGFORD.AC.UK@CUNYVM.CUNY.EDU>
Subject: RS Discone? To buy or not to buy?
Thanks to all of you who've replied to my query on RS Discone antenna.
I've decided not to buy the RS one - I've ordered a REVCONE (this is a UK
made version - stainless steel hardware, with a 'N' connector for the coax and
a tapped hole in the top so i can add a 1/4 wave whip for my favourite band.
Its no more pricey than the RS product, and of course theres nowhere for a
whip to fit on the RS one!
Will let the net know how it behaves. I dont know if REVCO products are
available in the States - methinks probably not.
++Pete
Please use the following addresses for reply: + \/Natural
+ \/\Environment
JANET: PJML@UK.AC.NERC-WALLINGFORD.IBMA + \/\/Research
ARPA : PJML%IA.NWL.AC.UK@NSS.CS.UCL.AC.UK + \/\/\Council
EARN : PJML%UK.AC.NWL.IA@UKACRL + NERC Computer Services
AX25 : G6WBJ {144.650MHz} + Holbrook House
SPAN : STAR::"PJML%IA.NWL.AC.UK@NSS.CS.UCL.AC.UK" + Station Road
PHONE: +44 793 411613 + SWINDON SN1 1DE
FAX : +44 793 411503 + GREAT BRITAIN
------------------------------
Date: Mon, 27 Nov 89 13:56:33 CST
From: Amxtmlme@redstone-emh2.army.mil
Subject: Termination of Info-Hams
Request this office be removed from mailing of INFO-HAMS.
Your cooperation is greatly appreciated.
JEAN S. MCGOWAN
Chief, Equipment Management Branch
------------------------------
End of INFO-HAMS Digest V89 Issue #937
**************************************