HDTenEightyP/NetNews huggingface dataset:
From: pierson@empror.enet.dec.com (dave pierson)
Newsgroups: rec.radio.amateur.misc
Subject: Re: Telsa Coils
Date: 28 Sep 92 16:58:48 GMT
Organization: Digital Equipment Corporation

In article <1992Sep26.131121.24577@ke4zv.uucp>, gary@ke4zv.uucp (Gary Coffman)
writes, in part:

>In article <1992Sep25.121205.24434@nntpd.lkg.dec.com>
>pierson@empror.enet.dec.com (dave pierson) writes:

>>In article <1992Sep24.174214.16291@ke4zv.uucp>, gary@ke4zv.uucp (Gary Coffman)
>>>writes...
>>> 
>>>This is false. Since we are dealing with a transformer primary coil, and 
>>>not a transmission line or antenna here, using 1/4 wavelengths of wire 
>>>has no advantage.
>>
>>	(Hmmmm  Time for alt.tesla???)
>>
>>	Uhhhh, maybe.   The Corum broithers build large (10 foot) Tesla coils.
>>	One of them (Bruce?) is a PhD in EMag, and teaches antenna design.
>>	_he_ found they got best results by modelling the system as a 1/4
>>	wave antenna, or, more specifically, as a helical reosnator.  One of his
>>	students built  projecty of a 160 MHz "Tesla Coil" with a ~18" wire as
>>	the secondary.  As a validation step, Dr Corum plugged in Tesla's
>>	description of his Colorado Springs coil, in its final form, into his
>>	program.  He found all the parameters were close to the optimum
>>	predicted for that general design.

>At the frequencies that Tesla coils are normally operated, LF not VHF,
>and at the physical size of home Tesla coils, the Rr of the coil is very 
>low. That means it's not much of an antenna.  
	Could be.  (I dug out the info from the Corum's & forgot to bring it...)

>I'd also put forward a thought experiment. Take a 1/4 wavelength wire
>and wind it into a coil. Now measure it's self resonant frequency. It's
>no longer the frequency for which you cut the 1/4 wavelength of wire.
>It's lower because of the additional inductance created by winding the
>coil. So you can never have a coil *that has turns* that will be self
>resonant at the 1/4 wavelength frequency of the straight wire from which
>the coil is wound. QED.
	No question about it.  I pointed out in my original article that
	(according to the ARRL handbook article on 180 meter antennas) a good
	starting point was one half wavelength of wire...

thanks
dave pierson			|the facts, as accurately as i can manage,
Digital Equipment Corporation	|the opinions, my own.
146 Main St			|I am the NRA.
Maynard, Mass	
01754				pierson@majsty.enet.dec.com
"He has read everything, and, to his credit, written nothing."  A J Raffles
Newsgroups: rec.radio.amateur.misc,fido.ham-radio,alt.bbs.ads
From: root@n8emr.cmhnet.org (0000-Admin(0000))
Subject: N8EMR_BBS_INFO
Organization: HAM BBS, 614-895-2553 
Distribution: na
Date: Thu, 01 Oct 92 05:00:32 GMT


The N8EMR Ham bbs is online to serve the needs of the
amateur radio operators.. 

        HOW TO ACCESS THE N8EMR HAM RADIO TELEPHONE BBS !!!

System Name: 	N8EMR
Phone:		614-895-2553
Login:		hbbs 
Modems:         TB2500 PEP/V.32 support
Times: 		24hrs
IP Address: 	44.70.0.1 
Amateur radio annonymous ftp access is available via the ohio 
netrom/ip network. CMHIP is the Netrom node Id and is known 
by most of the nodes in ohio. (its slow but it works)
This is only via the ohio packet network. This sytem
is not available via the "INTERNET".

To access the system via the dialup, at the login prompt type hbbs 
(lower case only), you will then enter the BBS program. Follow the 
directions from the bbs prompts.
 
I attempt to keep the latest and greatest HAM software on-line, and 
encourage all to upload Here is some of software that is available 
for downloading.

NEWHAM area. Pick the tools you need to become a ham
AMSAT news and satellite keplerian elements
KA9Q TCP/IP Software for various computers, 
ARRL related files
Latest packet bbs programs and utilitys.
Modifications for HAM Rigs and Scanners
DX and contesting programs
Many Packet related programs
Scanner, shortwave and TVRO files and messages.
NASA NEWS..
Online Callsign lookup.

Question or comments to

Gary W. Sanders (gws@n8emr.cmhnet.org), 72277,1325
N8EMR @ W8CQK (ip addr) 44.70.0.1 [Ohio AMPR address coordinator]
HAM BBS 614-895-2553
Voice: 614-895-2552 (eves/weekends)
From: randall@informix.com (Randall Rhea)
Newsgroups: rec.radio.amateur.misc
Subject: Re: Info on 2m glass/disguise antenna wanted
Date: 2 Oct 92 17:36:09 GMT
Distribution: usa,local
Organization: Informix Software, Inc.

oxenreid@chaos.cs.umn.edu writes:

>In <stuart.717978848@yacht> stuart@ee.fit.edu (William Stuart) writes:


>>In article <1992Sep28.074208.3768@arizona.edu> petrisko@evax2.engr.arizona.edu writes:
>>>Anyway, the question remains... how can I mount some useful antennas?
>>>At bare minimum, i'd like to run 2m on a regular basis, an on-glass 
>>>antenna is one route (low to no gain), also antenna specialists used to
>>>make a disguise antenna (am/fm/2m) but that has been discontinued.

Another option is J-Com, which sells the "Stealth Antenna".  The 2m
version is $59.00.  (Versions also available for 1.25m and 70cm)  It
is 3-1/2'' square, sticks to the car window, and can be covered with 
an alarm sticker. ("Warning, this vehicle is protected by an alarm system")  
(408) 335-9120.

73 DE KK6MY

-- 

=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Randall Rhea                                        Informix Software, Inc. 
Project Manager, MIS Sales/Marketing Systems    uunet!pyramid!infmx!randall
From: kwilli@elaine.ee.und.ac.za (KEVIN WILLIAMS : THIRD)
Newsgroups: rec.radio.amateur.misc
Subject: Buying Advice.
Date: 2 Oct 92 05:32:32 GMT
Article-I.D.: elaine.kwilli.15
Organization: Electronic Eng., Univ. Natal, Durban, South Africa
NNTP-Posting-Host: pc42.ee.und.ac.za

I am presently looking around for equipment to start my radio shack. As a 
new-comer to amateur radio, I would really appreciate some advice some 
people that have 'been in the business' for some time, and who know what 
equipment is worthwhile buying, and what to avoid.

My interests lie in the HF bands. Eventually I would like to move to 
digitial communications like AMTOR, etc.

Being a student, I would (can?!) only buy ONCE for a while, anyway, and as 
such I would like to get the best value for money I possibly can. I 
think this network is the right place to ask.

Would you advice me on what you think I should get? I am prepared to spend 
about R4000, (about $1000-$1250 I think...) on the radio. What do decent TNC'
s or plain AMTOR decoders sell for? What's good? Antennas? Transmitter power 
requirements?

I'll really appreciate ANY advice you can give.

Thanks,

Kevin Williams
University of Natal, Durban, South Africa.
Newsgroups: rec.radio.amateur.misc,fido.ham-radio,alt.bbs.ads
From: root@n8emr.cmhnet.org (0000-Admin(0000))
Subject: Email_Callbook_server
Organization: HAM BBS, 614-895-2553 
Distribution: na
Date: Thu, 01 Oct 92 05:00:37 GMT

			EMAIL CALLSIGN SERVER
                            US CALLS ONLY


For those who do not have telnet access to marvin or one of the other
Internet callsign servers here is an alternative. 

N8EMR's Ham BBS, 614-895-2553  has an email server up and running.
The Server is based on Buckmasters Spring 92 database.

------------------------- INTERNET AND CIS USERS -------------------------------

	Mail should be addressed to 
callbook@n8emr.cmhnet.org

If you have a well behaved mailer or a well know return address 
the reply path will be taken from your mail header. If you have
a strange reply path or non standard reply path. You can use the 
option REPLY line to specify a return path.
On the Subject line include a list a call signs to lookup. If your
mailer doesnt generate a Subject line you can use the option CALL
to specify a list of callsigns. All other lines and info are ignored.

E.G. 
# mail callbook@n8emr.cmhnet.org
REPLY  user@site.domain		(your reply path, ! or @ format.)
CALL n8emr w5rrr  		(list of calls, space seperated)
^D
#

-------------------------- PACKET RADIO ----------------------------------------

	Mail should be sent to CBOOK@N8JYV.#CMH.OH.USA.NA 
	You MUST use both the REPLY and CALL option lines.
The REPLY line should be as follows n8jyv!HOME_BBS!CALL, where
HOME_BBS is your local packet bbs where you would normal pick up 
your mail, CALL is your callsign. 
You must include the n8jyv! in your reply path.. Packet mail will fail
without this.

E.g.
SP CBOOK@N8JYV.#CMH.OH.USA.NA 
Subject ^M
REPLY n8jyv!w8cqk!n8emr
CALL n8emr w1aw
/EX

------------------------------ FIDONET USERS ---------------------------------

	Fidonet users can send request to call book 1:226/20.0

	Mail sent to the fidonet address must have the following info
included the REPLY line in  the following format.

REPLY fistname.lastname@fxx.nxx.zxx.fidonet.org

	where xx is your fidonet node info.


---------------------------- OPTIONAL COMMANDS ---------------------------------

REPLY This is an email address you would like to send the lookup info
	to. Either Internet @ or ! addressing is fine.
CALL  This is a white space separated list of callsigns you would like
	to lookup.
From: POLS0@AIS.UCLA.EDU (Linda Stocks)
Newsgroups: rec.radio.amateur.misc
Subject: Sarejevo Yugoslavia
Date: 1 Oct 1992 14:09:25 -0700
Organization: UCSD Usenet Gateway
NNTP-Posting-Host: ucsd.edu



I have been asked about sending a "health and welfare" message to
Sarejevo, Yugoslavia.  NTS is only for the US and Canada and I
don't have a callsign and bulletin board to send it to.  Has anyone
on the net had any luck with these type of messages or know anyone
who has.  Any information will be appreciated.

Thanks
   Linda Stocks, AA6MR              pols0@ais.ucla.edu
                                    aa6mr@wb6wfh#soca.ca.usa

  If there's light at the end of the tunnel,
  it's time to order more tunnel.
Newsgroups: rec.radio.amateur.misc
From: rdewan@casbah.acns.nwu.edu (Rajiv Dewan)
Subject: Re: Operating Procedures
Organization: Northwestern University, Evanston Illinois.
Date: Wed, 30 Sep 1992 18:07:53 GMT

In article <1992Sep30.153556.4339@pacifier.rain.com> mikef@pacifier.rain.com (Mike Freeman) writes:
>In article <1992Sep28.163236.15349@convex.com> tonyp@convex.com (honey bunny) writes:
>
.... 
>>Some of the quirks I've run into this weekend (all over - including
>>the amateur extra portion) were:
>>
>>  o 3 MINUTES of CQ followed by a callsign and a  "KN".

.. lament about of current operating condtions deleted

>
>I remember many of the same complaints being voiced when I became
>a ham in 1962.  The old-timers complained that them young whippersnappers
>just didn't know what good operating procedure was and that the hobby
>was going downhill fast.
>

Indeed!  Letters to the editor of QST in the 40's, 50's and on have the
same story.  Poor operating practices have been with us, are with us now
and unfortunately will stay with us.  After all, was not the dreaded
Wouff Hong invented to deal with recalcitrant bad operators? If you 
read the letters from way back you will be surprised how current the 
points they raise seem to be.  That is not to say that we should not 
try to educate novices about better practices.  It might be much 
worse otherwise.  :(

Rajiv                                 
aa9ch    
Address: r-dewan@nwu.edu
Phone:   None. Only CW.
From: jeffj@cbnewsm.cb.att.com (jeffrey.n.jones)
Newsgroups: rec.radio.amateur.misc
Subject: Re: HF Rig Info. Sought
Date: 29 Sep 92 00:35:43 GMT
Distribution: usa
Organization: AT&T

In article <28SEP199207113537@lims01.lerc.nasa.gov> lwwald@lims01.lerc.nasa.gov (LARRY WALD) writes:
>
>Greetings, I am interested in getting a good late model used HF rig.  I am 
>currently considering the ICOM 751A, the ICOM 735, and the Kenwood 440.  I 
>can't afford the new stuff, so I am just looking at used gear.  
>
>I'd like peoples' opinions of the rigs, especially folks out there that 
>have had experience with two or three of the rigs.  Thank you.

I have a Swan 700CX that I bought for $300. It's been worth every penny as
it puts out 400 watts on SSB on 20,40 and 80 with no trouble at all. It's
a old tube rig that does a good job of heating up my shack. 8-)  It's VFO 
is rock steady after a 10 minute warm up period though I have heard of other
models of Swans having drift problems. It covers 10,15,20,40 and 80 meters.
Make sure you get one with a VOX unit on it other wise you will have to 
manually switch between receive and transmit on CW. Probably could build
a VOX without much problem. There is a 700CW version out with extra switchable
filters built in. I am buying my friend's Swan 500 to put in my car. Just
hope it doesn't cause it to list to one side HI!

73!

Jeff

-- 
 Jeff Jones  AB6MB         |      If we do not succeed,
 jeffj@seeker.mystic.com   |      then we run the risk of failure.
 Infolinc BBS 415-778-5929 |      Vice Pres. Dan Quayle
From: MROWEN%STLAWU.BITNET@cunyvm.cuny.edu (Michael Owen W9IP)
Newsgroups: rec.radio.amateur.misc
Subject: 46m Dish on EME in November
Date: 28 Sep 92 18:10:24 GMT
Organization: UCSD Usenet Gateway
NNTP-Posting-Host: ucsd.edu




****************************************************************
Plans are being finalized for operation of the 46m (150') radio
telescope at Algonquin Provincial Park (FN05xw) in Ontario.
Members of the Toronto VHF Society visited the site this
past weekend and we found the dish to be fully operational.

We now plan to activate the dish on 432 MHz EME for the second
weekend of the ARRL EME contest.  We will be on the air for the
full two-day period.  Operation will be on 432.050, listening
+ and - 10 kHz.  Note the frequency change from a previous
announcement.  All contacts will be using the callsign
VE3ONT.

With >> 40 dBc gain and VE3CRU's 8938 Death-Ray amplifier
mounted at the feedpoint, we should be about 10 dB above the
noise on most Oscar-class antennas.  We are anxious to work
as many first-time-EME stations as possible.

Please distribute this notice widely.  Watch for further details.

Michael Owen W9IP
MROWEN@STLAWU
9/28/92
************************************************************
From: Jim_Sollows@mindlink.bc.ca (Jim Sollows)
Newsgroups: rec.radio.amateur.misc
Subject: Re: Icom Repair turnaround?
Date: 4 Oct 92 01:28:32 GMT
Organization: MIND LINK! - British Columbia, Canada
Distribution: world

>I just mailed my W2A off to Washington to have the top dial repaired.
>Which ever way you turned it, it went up in frequency.
>Does anyone know how long Icom usually takes to repair a radio?
>I'm trying to decide if I should talk one of my friends into
>loaning me one.. Thanks!

I have always had very good luck with ICOM here in Canada. Any repairs I have
required were in and out within 24 hrs and that included when I had a
blown driver in my HF Rig.

From: rogerm@hpscit.sc.hp.com (Roger Myers)
Date: Mon, 28 Sep 1992 17:59:37 GMT
Subject: How to Transfer a Call Sign
Organization: Hewlett-Packard, Santa Clara, CA
Newsgroups: rec.radio.amateur.misc


Hello Fellow Hams,

     I am WB7PJS. My dad was W6CAZ. He passed away 4 years ago. Shortly after
he passed away, I called up the FCC office in San Francisco and asked them
if there was a way I could change my call to his. He had his call since, I
believe, the 1940's. They told me there is no provision to transfer a call
sign and there is no way to do this. I would still like to get his call
sign and keep it in my family, instead of it being re-issued to someone
else. Does anyone know of any way I can do this?

Thanks in advance for your help,

Roger Myers  WB7PJS
Lewis Myers  W6CAZ
Newsgroups: rec.radio.amateur.misc
From: 5rtrtrt@cbnewsf.cb.att.com (richard.e.stealey)
Subject: Re: Barry elctronics...
Organization: AT&T
Distribution: na
Date: Tue, 6 Oct 1992 14:41:40 GMT

In article <9210051956.AA25705@ucsd.edu>, FDBBC@cunyvm.cuny.edu (Fred Bogin) writes:
> So where IS a good place to buy ham equipment in the NYC area????
> 


There isn't.  You mail order it.  You can have your gear in 1-2 days
delivered to your doorstep.  No hassle, no subway, no tax.

The reason there aren't any stores in the entire metropolitan area is that
it is extremely expensive to run a retail ham store, with rents, insurance,
payroll, benefits, inventory, sales tax, displays, etc.  Then the average
hams come in, play with the display equipment, and then expect to buy 
gear for 10% over cost, saying " Sell it to me for x dollars or I will
order it from xyz mail order company, and not have to pay sales tax to 
boot."  An entreprenur is better off selling refrigerators if he wants 
to make a living.

We hams did it to ourselves when we decided the buck was more important
than local service.  Hams have the reputation of being the cheapest
of the cheapskates when it comes to buying anything.  

Rick    KT2Q

Newsgroups: rec.radio.amateur.misc
From: m14494@mwvm.mitre.org (Mike White)
Subject: Re: Original License or is Copy OK ?
Organization: The MITRE Corporation
Distribution: na
Date: Wed, 30 Sep 1992 18:05:25 GMT

David Cook writes:
> OK! The license finally arrived.

Congrats! Welcome to the fraternity.

> Should I put the original in the safety deposit box and use photocopies...

Frame the original and hang it on the wall to impress friends and family,
and carry a (clear) copy in your wallet.

73...
Mike, N4PDY

************************
* These are my opinions only.*
************************
Xref: sparky rec.radio.amateur.misc:16532 rec.radio.swap:2663
From: kagoos@memstvx1.memst.edu
Newsgroups: rec.radio.amateur.misc,rec.radio.swap
Subject: Memphis, TN Hamfest Oct. 10-11
Date: 5 Oct 92 18:09:34 -0600
Organization: Memphis State University

	       	               MEMFEST '92
           GREATER MEMPHIS AMATEUR RADIO AND COMPUTER SHOW
                           October 10-11,1992


The Greater Memphis Are Hams cordially invite you to attend Memfest '92. 

Location: Pipkin Building - Mid-South Fairgrounds

Hours of Operation: Saturday  9:00 am - 4:00 pm
                    Sunday    9:00 am - 2:00 pm

Talk-in :    146.28/.88 MHz
             444.0/449.0 MHz
             1272.00/1292.00 MHz

Admission : $5.00 per person ( Under 12 years of age admitted free)

Prizes : Rumored to be Alinco Dual-Band Handheld on the hour, every hour during
         the hours of operation. Also dual band mobile rig at the end of each 
         day.


If you need more info please send me a mail message. Also if you visit the
hamfest, come by and see me at the DELTA CLUB booth.


Suresh N9GSA


Newsgroups: rec.radio.amateur.misc
From: kludge@grissom.larc.nasa.gov (Scott Dorsey)
Subject: Re: Batteries on concrete
Organization: NASA Langley Research Center and Reptile Farm
Date: Fri, 2 Oct 1992 17:17:33 GMT

In article <01GPFDFI7WOY95MOUB@IRIS.uncg.edu> MOSIER@iris.uncg.EDU (Steve Mosier) writes:
>
>The wagon wheels are the source of your problem, because of the enhanced 
>leakage potential at the interface of a circular surface on the flat floor 
>(automobiles don't have this problem due to the potential de-ionizer plate 
>that is in all cars today).  The easiest way to solve your problem, and still
>use your wagon, is to place 4 pieces of oil-soaked cardboard under the wheels. 
>That should do it.

This foolish pseudo-science has got to stop.  The electricity cannot be
dissipated through the concrete, because the wagon has rubber tires on it
and rubber is an insulator.  It is obviously a case of karma leakage from
the battery, with the karma being dissipated through the wheels.  Everybody
knows that round objects are primary sources of karmic transfer; this is
why prayer wheels and Inca monuments are round.  The most direct solution is
to get a wagon with triangular or square wheels (but not pentagonal).  If
this is not effective, a voodoo priest must be employed.
--scott
Newsgroups: rec.radio.amateur.misc
From: larson@loren.net.com (Alan Larson)
Subject: Re: Feedback to Operating Practices
Organization: Network Equipment Technologies
Date: Thu, 1 Oct 1992 01:32:45 GMT


In article <1992Sep29.200126.16371@convex.com> tonyp@convex.com
quotes the comments of someone who wrote him.

>        For equipment, I have an HF transceiver, and a borrowed 2m HT.   I
>        have  spent LOTS of time listening,  and very little attempting to
>        make contacts.  My log shows exactly 10 contacts (9 10m SSB, 1 10m
>        CW).  I haven't spoken to anyone on the HT.

  Not a bad thing.  Listening is good.  You can learn a lot that way.
The only thing you have to do is learn to recognize what is done well
and what is being done poorly.

  Don't let anyone tell you that you are wasting your time by not
getting on and transmitting more.


>        The reason is that I am scared to death.

  Well, I must admit that this is not the best reason to listen.


>        I want to sound like a "professional amateur".   I don't  want  to
>        get  a  reputation for being a "lid" early on!   But comments like
>        yours aren't entirely encouraging.  I'm not sure if ham radio is a
>        welcoming hobby, or a closed clique.

  Well, amateurs, and amateur groups, vary in how open they tend to be.

  Your desire to sound "professional" is commendable.  Even so, we
all make mistakes, and the world hasn't ended yet as a result.


>        Ok,  maybe  I'm  oversensitive.    But  code  and  theory is easy,
>        avoiding gaffs on the air appears to be difficult.  By December, I
>        may be the only "advanced" class ham with less than 20 QSOs  under
>        his belt!

  Don't worry about that.  I believe a friend of mine had an Amateur Extra
with far less on the air QSOs than that.  He was somewhere in the range of
none at all, but he may have had one or two.

	Alan
Newsgroups: rec.radio.amateur.misc