HDTenEightyP/NetNews huggingface dataset:
From: jfw@ksr.com (John F. Woods)
Newsgroups: rec.radio.amateur.misc
Subject: Re: PA stage: bipolar vs. FET
Date: 21 Jul 92 10:42:42 EDT

alanb@hpnmdla.sr.hp.com (Alan Bloom) writes:
>In rec.radio.amateur.misc, koning@koning.enet.dec.com (Paul Koning) writes:
>>1. FET designs are nice because FETs are easier to deal with (easier matching)
>>   and they have no thermal stability problems.  
>That is certainly the conventional wisdom.  It is based on the fact that
>the ON resistance of FET's increases with temperature, which is thought
>to cause reduced drain current.  But ON resistance only applies when the
>FET is turned completely ON.  When the FET is biased in the linear region,
>the current is controlled by the gate voltage.  With constant gate
>voltage, the drain current INCREASES with temperature.  
>So how come FET's don't have thermal runaway problems too?

(Is this an open book test? :-)

According to Motorola's Application Note 860, "Power MOSFETs versus Bipolar
Transistors" (wasn't that one of the Godzilla movie titles?), ``All MOSFETs
can in theory have a positive temperature coefficient on the gate threshold
voltage.  This means that the gate threshold voltage increases with
temperature, trying to "turn the devcice off."  In addition the g(m) will
decrease, which also helps in preventing thermal runaway, which is commonly
a problem with bipolars.  The coefficient of the gate threshold voltage is
also a function of the drain current.  Normally the coefficient is negative
at low current levels, and turns positive at higher currents.  The turnaround
point, which can be controlled by doping the other fabrication steps, must be
at a current level not to exceed the maximum dissipation rating, taking the
derating factor into account.  Thus, the power MOS devices can be easily biased
to Class A, without fear of a thermal runaway.''

So the answer is, they make sure there's a limit to how far they can run.
From: chuck@eng.umd.edu (Chuck Harris - WA3UQV)
Newsgroups: rec.radio.amateur.misc
Subject: BB-139 Varicap diode... Need help finding some....
Date: 23 Jul 92 16:11:11 GMT
Article-I.D.: eng.1992Jul23.161111.9199
Organization: University of Maryland, Department of Electrical Engineering

Hi,
	I asked this question about a year ago, but lost all of the responses.
I need to find a source for BB-139 varactor (varicap) diodes.  Every supplier
that I ask here in the 'States says:"Never heard of it..".  The diode was
used in an EATON 460 or Comstron/Adret 7100 Synthesized signal generator.

	If you know where I can find a source of these diodes, I would
appreciate the help.  I am even willing to mail order from overseas, if
necessary.

Thanx,

Chuck Harris - WA3UQV
chuck@eng.umd.edu
From: crawford@ENUXHB.EAS.ASU.EDU (Brian Crawford)
Newsgroups: rec.radio.amateur.misc
Subject: ARRL National?
Date: 28 Jul 92 14:17:03 GMT


The specifics of the ARRL National in Los Angelas were not mentioned in this
month's QST.

Does anyone know where exactly in LA it is to be held?  


Comments appreciated,

-------------------------------------------------------------------------------
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PO Box 804                     crawford@stjhmc.fidonet.org          (Permanent)
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Fax: +1 602 921 4022  FidoNet: 1:114/15.12
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From: alanb@hpnmdla.sr.hp.com (Alan Bloom)
Date: Thu, 30 Jul 1992 19:48:28 GMT
Subject: Re: LIDS?
Organization: Hewlett-Packard, Santa Rosa, CA
Newsgroups: rec.radio.amateur.misc

In rec.radio.amateur.misc, jga@dreaml.wariat.org (Jon Anhold N8USK) writes:

>Excuse my ignorance, but what is the significance of ''LIDS''?

A "lid" is a poor opeator.  I think the term comes from someone who
thought another operator's code sending sounded like a can lid
randomly banging.

AL N1AL
From: turner@safety.ICS.UCI.EDU (Clark Savage Turner WA3JPG)
Subject: "Readability, Strength" signal reports
Newsgroups: rec.radio.amateur.misc
Date: 22 Jul 92 16:58:27 GMT

Just wondering.....

I don't have the handbook in front of me, but what are the standards
for the Readability and Strength signal reports?  I am constantly
assaulted with silly reports like "five by one" or "five by zero"
where the operator on the other side seems to use his (her) S-meter
(now, THERE'S an accurate standard!!! :-) for the Strength report.
It's a bit silly since the "0" purportedly means zero signal strength,
thus impossible copy.

S-meter differences aside, and debates about the objectivity of such
reports reserved for another day, what are some of the standard definitions
for Signal Strength that we all use out there in ham radio land?  I would
love to have some useful heuristic to help me give more meaningful
reports.

.....................

Clark Savage Turner
Safety Critical Software Group			home:
Department of Info. and Computer Science	1514 Verano Place
Irvine, CA. 92717				Irvine, CA. 92715
(714) 856 4049					(714) 856 2131

WA3JPG, QRP #3526, active on HF, VHF and UHF.
Admitted to practice law in California, Massachusetts, and New York.
Newsgroups: rec.radio.amateur.misc
From: rpadawer@utkvx1.utk.edu (Padawer, Justin Randall)
Subject: MAC SOFTWARE NEEDED: LOGGING PRG ETC.
News-Software: VAX/VMS VNEWS 1.41    
Organization: University of Tennessee Computing Center
Date: Thu, 30 Jul 1992 06:46:00 GMT

Does anyone have a good program to use on the Macintosh
for logging?  Also, for interfacing with a Kenwood TS450?
Other interesting Mac programs for ham radio?

Also, does anyone know of any good FTP sites for amateur
software?

Randy Padawer
RPADAWER@UTKVX.UTK.EDU


Newsgroups: rec.radio.amateur.misc,rec.radio.amateur.packet
From: jim@n5ial.chi.il.us (Jim Graham)
Subject: data compression with packet:  legal?
Originator: jim@eddie
Reply-To: jim@n5ial.chi.il.us
Organization: me?  have you seen my desk?  : -)
Date: Wed, 29 Jul 1992 19:51:20 GMT

this may belong in .policy, but since there are also technical concerns,
I'll start here.

let's say someone wanted to setup something on packet (more likely on
HF packet) to use data compression between two stations.  note, I did
*NOT* say encryption....just data compression.

first, would this be legal?  my immediate guess is that it would be,
but that it's probably worth asking the question.

second, there are obviously lots of technical concerns.  the type of
system I'm kinda thinking about would be an error-control/data compression
scheme very much like that used with modems (V.42/V.42bis, for example).
naturally, it isn't as simple as that with packet, but....

assuming that everything uses KISS, and that it is possible to enforce
the block size/PACLEN settings such that no data block ever gets split
into two packets, does this sound like a good thing?

of course, if you don't split the data block between packets, you really
don't need extra error control...just something to make sure that packets
don't get lost somewhere along the way.  QUESTION:  AX.25 already does
this this, right?

next question:  does anyone know where I could find a very good, very
detailed description of the KISS protocol?  how about AX.25?  (or can I
just get the specs for X.25 and then get some diffs?)

any info appreciated....
   --jim

\input std_disclaimer                     % 73 DE N5IAL (/9)
------------------------------------------------------------------------------
"[...] the plural of `mongoose' ought to be `polygoose'." [Jargon file 2.9.10]

INTERNET:  jim@n5ial.chi.il.us  |  grahj@gagme.chi.il.us  |  j.graham@ieee.org
UUCP:  gagme!n5ial!jim@clout.chi.il.us
AMATEUR RADIO:  n5ial@n9hsi (Chicago.IL.US.Earth)
------------------------------------------------------------------------------
From: ron@pilot.njin.net (Ron Natalie)
Newsgroups: rec.radio.amateur.misc
Subject: Re: Is it "business" if I use and autopatch to...
Date: 26 Jul 92 22:35:53 GMT
Organization: Rutgers Univ., New Brunswick, N.J.

> I think you are over reacting to a situation that isn't an imminent
> threat to life. 

I spent a little over three years in a volunteer fire department
(Cowenton Volunteer Fire Company, White Marsh, MD).  We had
responsibility for running on I-95 from approximately the Baltimore
Beltway up to the county line.  In that time I saw the following
fatal accidents (and there were likely to be more that were responded
to when I wasn't around):

    1.  Car stops for some relatively minor problem (flat or
something).  Wheel comes off Semitrailer and bounces down the
shoulder eventually hitting and killing the car driver (Yes,
I know this one is bizarre).

    2.  Tractor-trailer stops on shoulder (nice wide I-95
paved shoulder and the truck is well over in it not encroaching
on the left lane.  Another truck (straight van, not tractor-trailor)
slams into the rear such that the right half front of the striking
truck hits the back corner of the trailer driving it and the front
seat passenger five or six feet backwards.  Both driver and passenger
killed.  In the backup that this created a careens off the road
striking tree (driver alive, but seriously injured), then three trucks
carrying lumber get involved further back in the backup and the middle
one catches fire, flambee'ing the driver (fatality 3).

    3.  Bakery delivery truck strikes car on shoulder and driver.
Driver is driven so far into the undercarriage of the truck that
it is not removed in one piece.

    4.  A church group stops (bladder break?) on the side of the road.
Another car slams into the rear of the parked car.  A small child in
the back seat his hidden by the wreckage and is not even missed until
after all the other injuries are transported.  She dies.

These are fatalities directly related to someone being stopped on the side
of the road and either being struck by or striking the stopped
vehicle.  I've seen two other fatalities that involve a backup caused
by people slowing down to look at cars on the shoulder.  One was an
n-way truck slams into a car driving several others into another
flipping one camaro over in the process.  The driver immediately
in front of the truck is killed, as the truck ends up on top of
his car.  We had initially though it was a volkswagen from the
wreckage, it turns out it's a pickup truck.  In another a car
careens off the road when it realizes traffic is near stopped ahead
and heads into a tree.  Driver is medeveced but dies anyhow.

In each case there is no indication that these accidents involve
any alchohol (fatigue, highway hypnosis, maybe), in stark contrast
to nearly every other motor vehicle fatality I've dealt with.  In
those cases either the victim or the other driver had been drinking.

Since I've moved and have been down here in Va, I've read in the
paper (the Washington Post, not the McPaper) about two other similar
accidents.

-Ron
Newsgroups: rec.radio.amateur.misc
From: paulf@umunhum.stanford.edu (Paul Flaherty)
Subject: Re: ARRL (Re: ARRL Bulletin 68  ARLB068)
Organization: The Three Packeteers
Distribution: na
Date: Wed, 22 Jul 1992 20:40:05 GMT

In article <1992Jul22.011844.6705@ncar.ucar.edu> elmore@virga.rap.ucar.edu (Kim Elmore) writes:
>	After due consideration of my latest post/flame I've
>reconsidered; what I posted was harsh and petty.  I let my emotions
>get the better of me.  Paul is obviously extremely bright, but it
>seems he just can't resist throwing rocks whenever the opportunity
>arises and it finally set me off a bit.

Oh, probably not as harsh or petty as that one liner I wrote.  Years ago,
I decided such flames generally weren't worth the ulcers, so I stopped writing
long flaming diatribes.  The exception has been when someone decides to 
roast someone instead of dealing with their arguments.  Even then, I try to
give fair warning of what's coming, something I neglected to do with that
particular posting (rot13 does have its uses).

>	Intellegence is no excuse for antagonism, though.  If he
>doesn't like it, why not work to constructively change it?  If he
>says "I can't change it so why try?" then he is, by default, correct.
>A hollow victory.

>	I should have posted this response instead of getting mad...
>My apologies to Paul and the net.

Likewise and reciprocated.  From now on, I'll rot13 my one-liners.

PS -- to the person advocating the killfile entry:  You'll need to kill off
paulf in general, and not just paulf@w6yx.stanford.edu, as I post from a
number of hosts.  But as a general point of net.philosophy, resist the
temptation.

--
-=Paul Flaherty, N9FZX/5W1JX  | "What a difference an hour can make."
->paulf@Stanford.EDU          |		-- Veror Vinge
Newsgroups: rec.radio.amateur.misc
From: ewing-martin@CS.YALE.EDU (Martin Ewing)
Subject: Re: AARL vs ARRL
Organization: Yale Univ. Sci & Eng Comp Facility, New Haven CT 06520
Date: Thu, 23 Jul 1992 02:47:02 GMT

There is some precedent for keeping a slightly antique name like the
American Radio Relay League.  The main professional association for
computer science is the Association for Computing Machinery.  The ACM
periodically has to deal with suggestions for a more "modern" name,
perhaps one that emphasizes software or systems.  (Most computer
scientists know little about "machinery" these days.  They are
appliance operators like a lot of hams; the emphasis is on software,
algorithms, protocols, etc.)

ARRL and ACM, as names, point to the tradition, origin, and history
of the organizations.  I think that's worth keeping.  Arguments about
the cost of new letterheads, etc. seem rather unimportant by comparison.

Martin
AA6E

Newsgroups: rec.radio.amateur.misc
From: lsmichae@immd4.informatik.uni-erlangen.de (Lars Michael (Turo - Backstage))
Subject: Re: DJ-580T packet interface diagram available
Organization: CSD., University of Erlangen, Germany
Date: Wed, 22 Jul 1992 12:49:24 GMT

MGB@SLACVM.SLAC.STANFORD.EDU writes:

>In article <1992Jul17.215321.25230@hp1.uucp>, dave@hp1 (David Vrona) says:
>>
>>The folks at Alinco faxed me a schematic to interface the DJ-580T to packet
>>(TNC).  I drew this schematic on a CAD package and converted it to postscript.
>>
>>Anyone who wants the postscript file should e-mail me.

>I tried to email you but got my mail rejected, so if you could send a copy
>of the 580 interface to MGB@SLACVM.SLAC.STANFORD.EDU, I would appreciate
>it.

Me 2 please. Jusr send it to the top address in my .sig.

Thanx in adavance,
-- 
----------------------------- cut here ------------------------------
----------------------------- cut here ------------------------------
								Larry
From: lapin@casbah.acns.nwu.edu (Gregory Lapin)
Newsgroups: rec.radio.amateur.misc
Subject: Re: ARRL Bulletin 68 ARLB068
Summary: 10 year olds and no-code?
Date: 22 Jul 92 21:13:31 GMT
Followup-To: rec.radio.amateur.misc
Distribution: na
Organization: Northwestern University, Evanston Illinois.

In article <1992Jul22.144044.2835119@locus.com> dana@locus.com (Dana H. Myers) writes:
>In article <6979@lib.tmc.edu> jmaynard@oac.hsc.uth.tmc.edu (Jay Maynard) writes:
>>Well, we have no-code. It was supposed to be the panacea. Where's the flood of
>>10-year-olds we were promised?
>
>  Who promised a flood of 10 year olds? I recall the argument was that
>many people who could provide diverse technical contributions to amateur
>radio were being kept out by the archaic CW requirement. Since the Technician
>license was modified to eliminate the CW requirement, a large number of
>interesting and technically diverse new hams have shown up on the local
>repeater I use. These new hams are indistinguishable from the new hams
>when CW was a requirement, and there are a lot of them. I haven't seen
>a flood of 10 year olds, but I've seen a downpour of adults and teenagers.
>
>-- 
> * Dana H. Myers KK6JQ

I agree with this - the absurdity is that, at least concerning my 9 year
old, young people have no problem with CW - my daughter took one day to
memorize half the alphabet and still remembers it a year later with very
little practice in between.  The written exam is another issue.  9 and 10
year olds do not usually have sufficient math background to be able to
perform some of the calculations on the Tech exam.  In 3rd grade they
finally learned to multiply and a touched on division.

I expect to see most kids in that age range to enter ham radio as Novices.
No-code tech is best for those who are old enough the understand the
technical questions and don't care to learn CW.

Greg Lapin KD9AZ
glapin@nwu.edu
From: DAMICO@IPMEL1.POLIMI.IT (MICHELE)
Newsgroups: rec.radio.amateur.misc
Subject: COMB6.ZIP - Hams: HF radio propagation prediction program
Date: 22 Jul 1992 02:38:09 -0700
Organization: UCSD Usenet Gateway
NNTP-Posting-Host: ucsd.edu
Summary: Reposted by Keith Petersen

I have uploaded to WSMR-SIMTEL20.Army.Mil:

pd1:<msdos.hamradio>
COMB6.ZIP       Hams: HF radio propagation prediction program

This program is able to  perform HF Propagation Prediction, knowing
location and characteristics of the stations and sunspot numbers. This
algorithm has also been in use for several years at BBC World Service,
for the preparation of the transmission schedule. Your opinions
apreciated.

                                      73s de IK7GDP  Michele
- -
Michele D'Amico ("StarFighter")           E-Mail: DAMICO@IPMEL1.POLIMI.IT
Viale Colombo, 107
Foggia 71100  ITALY                         "May the cube be with you"
Tel. (+39) 2-89502397  (Home)
Tel. (+39) 2-23993596  (Office - Politecnico di Milano - Electronic Depart.)
FAX  (+39) 2-23993413  ( "                "            "                "  )
From: POLS0@AIS.UCLA.EDU (Linda Stocks)
Newsgroups: rec.radio.amateur.misc
Subject: ICOM IC-2SRA
Date: 27 Jul 1992 13:28:37 -0700
Organization: UCSD Usenet Gateway
NNTP-Posting-Host: ucsd.edu

Does anyone on the net have any info on the IC-2SRA?
The receive is supposed to be 50-905 MHz.  Are there any
gaps in this range? (The literature doesn't show any.)
Any info on it's strengths/weaknesses would be appreciated.
Thanks,
Linda, AA6MR
From: vail@tegra.COM (Johnathan Vail)
Newsgroups: rec.radio.amateur.misc
Subject: Re: Re:Thread to ham radio (to Ron MIller)
Date: 23 Jul 92 14:05:13 GMT
Organization: Tegra, Inc., Billerica, MA
In-reply-to: Don_R._Moberly.El_Segundo@xerox.COM's message of 22 Jul 92 17:15:00 GMT


In article <"22-Jul-92.10:13:37".*.Don_R._Moberly.El_Segundo@Xerox.com> Don_R._Moberly.El_Segundo@xerox.COM writes:

   Usualy I don`t bother to respond to very nuch that I read on this net but the
   following is just enough to deserve a response.
   Mister Miller writes:
   <The unhelmeted motorcyclist had been riding along and had hit and killed a
   (big) deer. She had head, neck and probably spinal injuries. >

    As if she were wearing a helment she would not have hit the deer?
   Or is she would not have the head neck and spinal injuries?
   Or is it if she were wearing a helmet none of the above would have happened?

   Before  buying into the helmet lobby  or anything else where the politicians
   are going to  protect you from your self, ask your self  who`s pockets are
   going to get lined this time. The current helmet laws in California are a good
   example of how a strong lobby can increase sales of any product. Helmets do not
   keep people from doing stupid things on motorcycles. One moment of
   inattenitiveness, or stupidity is going to hurt you on a motorcycle.  Most
   accident I have seen involving motorcycles  could have been avoided if the
   rider had been paying attention to the business of riding. In order to ride
   safe you have to ride smart.
   Just keep one thing in mind like seat belts, helmets are only about 50%
   effective.

As a rider I would like to add a bit to the discussion:

 - Helmets, like seat belts, are a good idea.

 - Mandatory helmet laws, like seat belt laws, are a bad idea.  The
   "cost to society" argument is lame because to be fair it should be
   applied to things like smoking and from there to any number of things
   that would quickly become absurd.

 - Helmets allow you to use the radio motorcycle mobile.


jv


"theobromine: a compound which, contrary to it's name,
contains neither bromine nor God" -- David Throop
 _____
|     | Johnathan Vail     vail@tegra.com     (508) 663-7435
|Tegra| jv@n1dxg.ampr.org    N1DXG@448.625-(WorldNet)
 -----  MEMBER: League for Programming Freedom (league@prep.ai.mit.edu)
From: cjackso@nv6 (Clay Jackson)
Newsgroups: rec.radio.amateur.misc
Subject: Re: Deed restrictions banning ham antennas
Date: 24 Jul 92 04:09:38 GMT
Distribution: usa
X-Newsreader: Tin 1.1 PL4

waco@cbnewse.cb.att.com (john.l.broughton) writes:
: 
:   1. I don't think restrictions are generally able to be removed via
:      negotiation; congrats to the ham who could do so.
I agree, the only exception I can think of would be when one was buying
into a new(er) development, in which the developer WAS the association.
In fact, that's how I got my weather station mast (which is potentially
"illegal" if one takes a strict interpretation of the CC&Rs) approved.
: 
:   3. While it can't hurt to press the FCC to extend PRB-1 logic and rules
:      to CC&Rs, there is probably a better way.  Get Congress to modify
:      the Communications Act.  Congress makes the law and the FCC is charged
:      with implementing it.  I would think there would be fewer lawsuits;
:      PRB-1 is challenged often and judges sometimes rule against the ham and
:      for the restrictions in spite of PRB-1 -- BUT YOU WOULD NEVER KNOW IT BY
:      READING QST -- c'mon, ARRL; give us the good news with the bad!!
I agree - and this is one case where I think ARRL could (and SHOULD) help.
Would someone from ARRL please respond and tell us what it will take to
get the League involved in this - there must be at least a FEW sympathetic
congresscritters who could get something like this attached as a rider
to another bill.

: 
:   4. I feel it is important to our hobby to remove these restrictions.  It
:      is very rare nowadays around this area to find a new subdivision that
:      doesn't prohibit outside antennas.  This is usually not for RFI problems,
:      but for aesthetic purposes; don't we all want politically correct
:      neighborhoods and be free from the having to gaze upon "unsightly" TV,
:      satellite and amateur antennas?
EXACTLY!

--
Clay Jackson - N7QNM
US WEST NewVector Group Inc
Bellevue, WA
uunet!uswnvg!cjackso
From: kchen@Apple.COM (Kok Chen)
Newsgroups: rec.radio.amateur.misc
Subject: Re: AARL vs ARRL
Date: 28 Jul 92 16:31:54 GMT
Organization: Apple Computer Inc., Cupertino, CA

stevew@netcom.com (Steven Wilson) writes:

>In article <1992Jul27.160247.22632@ctr.columbia.edu>, johnl@avs.com (John W. Langner) writes:
>> Roy explained that he would have joined the ACM if it was named the
>> Association for Computing Machinists.  Since it was an association for
>> computing machinery, his HP calculator joined the organization.
>> 
>> So, if you don't like the name American Radio Relay League, don't join.
>> Enroll your radio relay instead!
>> 
>> John WB2OSZ

>Following this logic not even an entire radio can join......only the
>TR relay! ;-)


Worse.  The relay would have to be American-made.  Maybe I will
send in membership application for the click-clack in my Omni-V.
:-)


Kok Chen, AA6TY				kchen@apple.com
Apple Computer, Inc.