HDTenEightyP/NetNews huggingface dataset:
From: reisert@mast.enet.dec.com ("Jim Reisert, AD1C  15-Nov-1992 2200")
Newsgroups: rec.radio.amateur.misc
Subject: YX0AI QSL Update from N3JT
Date: 16 Nov 92 02:58:41 GMT
Article-I.D.: enet-gw.9211160258.AA27501
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[relayed from YCCC PacketCluster(tm)]

Msg #710  From: N3JT  Date: 15-Nov 2031Z  Subj: YX0AI

Despite promises from YV5ANT and others while I was with them in Caracas
in September, and despite 3 recent FAX's (as recently a Nov. 12), I have
heard nothing in response to my inquiries about the YX0AI cards.  The list
of 120 some QSOs that I took with me and still resides with them remains
unfulfilled.  I want those who sent cards, dollar bills, etc. to me that
they sit in a pile awaiting response from YV5ANT and group.  They were 
supposed to have sent a pile of cards to me via a courier service the
employer of YV5ANT uses to Miami (and then to DC via US Mail), but I 
haven't gotten anything.  Will keep you advised!
Jim
From: annette@curtiss.seas.ucla.edu (Annette K. Nasif)
Newsgroups: rec.radio.amateur.misc
Subject: info on imaging systems wantedted
Date: 21 Nov 92 01:21:48 GMT
Organization: SEASnet, University of California, Los Angeles


     Hello, I am looking for ANY information on two imaging systems:
First, a video camera that can transmit the image to a receiver, and
second, a still-life camera (not a video) that can digitalize the picture
and have it transmitted to a receiver.  Both of these will be the
payload on a rocket that will (hopefully) climb to 200,000ft.  A name
of a manufacturer would be especially helpful, but I will appreciate any
information you could give me.  Thank you!!    Annette
                                               annette@seas.ucla.edu

Newsgroups: rec.radio.amateur.misc
From: k2ph@cbnewsj.cb.att.com (The QRPer)
Subject: Re: Serial Interface; Kenwood TS-440 & 850
Organization: QRM Central
Distribution: usa
Date: Wed, 18 Nov 1992 21:55:39 GMT

From article <1992Nov18.192318.28531@cbnews.cb.att.com>, by wrb@cbnews.cb.att.com (wallace.r.blackburn):
> Whole bunch of stuff removed...
> 
> This is kind of risky in a couple of ways.  First, not meeting the RS-232
> specs is asking for trouble.  A valid mark is -3 to -25V.  While the 0.2V
> might be accepted as a valid mark, it might get kind of flakey under some
> circumstances (like right in the middle of a contest!).
> 

Not meeting the RS-232 specs isn't asking for trouble at all,
since the 1488 and 1489 quad driver and receiver chips used
almost everywhere don't meet the specs themselves!  Weren't
designed to.  As far as going all the way to -25 volts or
all the way up to +25 volts, you'll never see this.

I know at least two hams with TS-940Ss with the IF-10B installed
that simply swamped the output of the TxD lead on their computers
with a 1N4733 5.1-volt, 1 watt Zener diode.  Then, they swapped
the TxD and RxD leads to the transceiver (simple null modem).
Guess what, gang, it works.  Worked all contest weekend.  And,
it continues to work to this day.  This is no surprise as the
1489 and 1489A quad receiver chips are already TTL compatible
and the 5.1-volt Zener diode (combined with the 300-ohm series
output resistor in the 1488) safely forms a RS-232 to TTL
level converter.  Instead of paying Kenwood 100 bucks for an
IF-232C, they paid Radio Shack a dollar for a Zener diode.

As far as 0.2 volts "might" be accepted as a valid mark, it WILL
be by anything using either a 1489 or 1489A receiver chip, since
they trigger at anything below 1.5 or 2.25 volts.  Which one
depends on whether it's a 1489 or 1489A.

Lots of equipment could be built less expensively if designers
looked at the way RS-232 devices are actually implemented instead
of blindly crossing every t and dotting every i in the standards
documentation.  I say this as someone who worked with the standards
community for many years (a goodly portion of the revision from
RS-232C to RS-232D was my idea).

Time to get off my soapbox now.  :-)

-- 
==================================================================
Bob Schreibmaier K2PH  | UUCP:     ...!att!mtdcr!k2ph | Quality is
AT&T Bell Laboratories | Internet: k2ph@mtdcr.att.com |  Job 1.01
Middletown, N.J. 07748 | ICBM:     40o21'N, 74o8'W    |
Newsgroups: rec.radio.amateur.misc
From: wrb@cbnews.cb.att.com (wallace.r.blackburn)
Subject: Re: Serial Interface; Kenwood TS-440 & 850
Organization: AT&T
Distribution: usa
Date: Wed, 18 Nov 1992 19:23:18 GMT

In article <1992Nov16.205903.14445@news.acns.nwu.edu> rdewan@casbah.acns.nwu.edu (Rajiv Dewan) writes:
>In article <1992Nov16.120255.893@miavx3.mid.muohio.edu> clmorgan@miavx3.mid.muohio.edu writes:
>>Someone out there in radio (or NET) land has chip numbers and
>>instructions for installing the serial interface circuitry in
>>a TS-440S.  Would he/she be kind enough to share with me?  I'd
>>rather not have to buy the Kenwood product.
>>...
>>Also, the TS-850 ... is this interface already built-in?  I
>>noticed kits for the '440 and '940, but saw nothing listed for
>>the '450 and '850?  Anyone know?
>>
>
>Yes and No.  For a Kenwood rig to work with a serial port on a computer,
>you need two items:
>
>i)  A serial data transmitter/receiver kit for TS440 and TS940.  It is built
>into TS {4|8|9}50 S.  For the 440 the kit consists of two chips, one of 
>which is a ttl uart and the other a counter which is probably used generate 
>a clock rate for the serial data chip.  

The 940 requires an interface board, the IB-10 I believe.

>ii) A level converter.  Here you can make your own or buy Kenwood's for
>$99.  Serial interfaces in many computers (especially ones using Motorola
>chipsets) do not require a -12V level.  A level of 0.2v (or so) is enough.  
>This can be easily achieved using simple transistor interfaces.  Plans
>for this has appeared in QST in the last year or so.
>

This is kind of risky in a couple of ways.  First, not meeting the RS-232
specs is asking for trouble.  A valid mark is -3 to -25V.  While the 0.2V
might be accepted as a valid mark, it might get kind of flakey under some
circumstances (like right in the middle of a contest!).

Second, the isolation of these types of interfaces is not too hot.
Isolation is like lightning protection - you need it or you don't, but when
you need it, you really need it.

SHAMELESS PLUG FOLLOWS:

I have an article coming out in January 1993 QST explaining the basics of
these "level shifters" and describing interfaces for each brand of rig.
The interfaces meet the RS-232 specs and do a good job of isolation.

>Some day Kenwood and other will start using innovative chips like
>the Maxim232 that do the job of a uart and a level converter in one chip.

I agree, sort of.  All of the interfaces I describe use the MAX232 or one
of the clones.  I can, however, see why they might not use one.  The prices
are just now coming down on these things.  If your design is a little more
complex but has $5 less in parts, it might be worth it when you are selling
thousands of them.  The MAX232 is just a level shifter by the way, not a
UART.



				Wally Blackburn AA8DX
Newsgroups: rec.radio.amateur.misc
From: nk30@cbnewsm.cb.att.com (JEFF ZELL NK3O)
Subject: Linear Loading of a dipole antenna
Organization: AT&T-BL,READING,PA.
Date: Fri, 20 Nov 1992 16:06:45 GMT
Keywords: more stuff


	Hello

	I have been playing with a linear loaded 80 meter dipole because of 
property size limits. I have been looking for articles about linear loading of
dipoles and even verticals with no sucess. Does anyone know where I could find
information about linear loaded antennas? One source has been Low Band DXing
however, it dosen't explain how you derive the spacing and fold back length.
Why is linear loading not a popular method of making antennas? From everything
I have read a linear loaded antenna, has less radiated power loss than an 
inductively loaded or trapped antenna. Is it a problem of mechanics 
(construction problems)? 
			Thank you
			Jeff Zell
			NK3O

NEW STUFF
	Below is the antenna that I am working on. 1/2 of the antenna


							I------13'-----------I
------------------------------------------------------------------------------
							                     I
									     I
						_	----------------------
						1'	I
							I
						_	-----------------------
I---------------------------------------45'------------------------------------I

I have been feeding the antenna with 450 ohm ladder line. The antenna is mounted
at 36' on one end and 25' on the other end. The total length of wire per side 
is 73'.
	If your design frequency is 3.7Mhz then 468/3.7=126.49'
	126.49/2=63.24 for one side of the antenna. 73-62.24=9.76' delta

Things I have learned:
		feed point is near 450 ohms
		perfomed well in a <2000 mile range
I am feeding the antenna into a 4:1 balun built into my tunner. The antenna 
will load better on the lower part of the band. I have not been able to reach
a 1:1 swr without using the tunner.This is where I have stop at the present 
due to time and weather constraints.

	Thank you to all who have provided responses and I hope we can continue
this. I am learning more with each response.
		Thanks
		Jeff	
		NK3O





																				

Newsgroups: rec.radio.amateur.misc
From: oswood@rtnmr.chem.yale.edu (Mark Oswood)
Subject: HF Loop Antenna
Keywords: How to build?
Organization: Yale University, Department of Computer Science, New Haven, CT
Date: Fri, 20 Nov 1992 21:03:46 GMT



I am thinking about building a loop antenna similar to the AEA isoloop.  
It seems like a great antenna design for limited space without losing too
much efficiency.  However, I can't afford the $300 AEA charges, and it 
doesn't seem impossible for me to build.  I have found an article in 
June 1986 QST which is helpful, but I am wondering about what capacitor 
to use.  For those unfamiliar with the design, this is a loop of 
conductor approximately 1 meter in diameter with a variable capacitor in 
series with the loop.  The loop is coupled to the feedline through a 
gamma match or a smaller loop.  Apparently I need a variable in the 
range of 5-200 pF which is able to withstand at least 10,000V 
(assuming I will limit my transmissions to ~100W).

1.  Can anyone suggest a source for such a capacitor?

2.  Has anyone actually built such a loop, and do you have any suggestions?

I hope this is the right group for technical questions--from reading one would
think this was alt.cw.flame. :-} 
 -----------
Mark C. Oswood	N1??? (4 weeks and waiting)
				oswood@psun.chem.yale.edu
			or 	moswood@biomed.bitnet
No disclaimers need apply.



Newsgroups: rec.radio.amateur.misc
From: kawai@Csli.Stanford.EDU (goh kawai - n6uok)
Subject: Re: STANDARD 558 HT -- Here's the extended Rx ... want comments. . .
Organization: speech research program, sri international
Date: Tue, 24 Nov 1992 03:50:02 GMT

KE9ZM (Gary Buchholz) DE N6UOK

  | I'd appreciate any comments on the STANDARD 558 ... or the STANDARD
  | brand in general.

I have a Standard 528.  Rather large and heavy, compared to the newest
dualbanders from Icom and other manufacturers.  However, receive audio is
excellent (it has larger speakers, partly due to the unit's larger size).

The fact that you can listen to both bands simultaneously was a terrific
advantage when the HT first came out.  Nowadays, it's a common feature.

As far as the Standard 558 is concerned, I've never owned one, so I cannot
offer any direct comment.  I do know that Standard is a reputable company,
and that, at least in Japan, they sell a large amount of HTs, certainly more
than Yaesu does.

By the way, Standard came out with an attractive, tiny 430 MHz HT.  The
model is known as Standard C401 in Japan.  230 mW out using two AA
batteries.  The unit (without antenna) is the size of a credit-card
(although much thicker -- 2.5 cm at widest point), and weighs 130 g.  I have
tried it.  This is one HT that you can leave in your chest pocket.  Costs 
24,800 yen list (about 200 dollars).  Sells for about 20 percent less.

-goh-

----------------- Speech Research Program, SRI, Menlo Park, CA 94025-3493 USA
--- Goh Kawai --- work:(415)859-2231   fax:(415)859-5984   home:(415)323-7214
----------------- internet: kawai@speech.sri.com      radio: n6uok and 7l1fqe
From: brian@ucsd.edu (Brian Kantor)
Newsgroups: rec.radio.amateur.misc
Subject: Re: Need first date of an old Call: WA2SDY  Syracuse Univ. ARC
Date: 23 Nov 1992 16:30:11 GMT
Organization: The Avant-Garde of the Now, Ltd.
Distribution: usa
NNTP-Posting-Host: ucsd.edu
Keywords: Call book, old calls

The copies of all your licenses and the applications you submitted with
them are available from the Federal Records Center.  The FCC in
Washington can tell you how to request copies from the FRC.  There is a
small copying fee which is occasionally waived.  About a decade ago, I
went this route in conjunction with a Privacy Act information request.

This may be sufficient to prove your license status to a VEC.
	- Brian
From: taylor@tix.timeplex.COM (Seth Taylor)
Newsgroups: rec.radio.amateur.misc
Subject: Help! Need QSL routes for old KZ5 Contacts
Date: 23 Nov 92 21:30:16 GMT
Organization: UCSD Usenet Gateway
NNTP-Posting-Host: ucsd.edu
Originator: daemon@ucsd.edu

In my last posting on first line correct 1979-71 to 1970-71.
Seth T. KC2WE ex- WA2FNF & KZ5BA.
Newsgroups: rec.radio.amateur.misc
From: royre00@orac.holonet.net (Rejean Roy)
Subject: Scanner pro2005
Organization: Information Access Technologies, Inc. of Berkeley, CA
Date: Thu, 19 Nov 1992 03:02:18 GMT


Does somebody has modification for a Radio Shack snanner model PRO-2005.

			Thanks for your help





------------------------------------------------------------------------------
                        
     				    Rejean Roy

                        Universite de Sherbrooke
                        Sherbrooke, Quebec, Canada
                        VE2IMS 				(Ham radio)
                        royre00@holonet.net 		(holonet &internet)
                        royre00@dmi.usherb.ca 	        (internet)
 
-------------------------------------------------------------------------------
 


-- 




Newsgroups: rec.radio.amateur.misc
From: gary@ke4zv.uucp (Gary Coffman)
Subject: Re: Lightning Arrestors?
Reply-To: gary@ke4zv.UUCP (Gary Coffman)
Organization: Gannett Technologies Group
Date: Mon, 16 Nov 1992 14:40:42 GMT

In article <9211131351.aa00980@ingate.microsoft.COM> a-kevinp@microsoft.COM (Kevin Purcell, Rho) writes:
>Charles Rissmeyer writes:
>>... do those in-line lightning arrestors really work?
>
>Nothing will protect you from a direct strike; if your
>antenna gets a direct lightning zap, all bets are off.  The
>real purpose of a lightning arrestor is to bleed off static
>charges from near-strikes before they reach dangerous
>levels.  The good ones (i.e., expensive) work a lot better
>than the cheap ones.

Well, that's not completely true. You *can* protect your equipment
from most direct strikes. It's not just a simple matter of screwing
in an arrestor, however. You have to do a comprehensive station 
engineering job. I've posted on this before, and am writing an article
about it that you may see in a while in a ham magazine.

Gary KE4ZV
From: batchler@pica.army.mil (Ham)
Newsgroups: rec.radio.amateur.misc
Subject: dx stamps
Date: 20 Nov 92 12:36:44 GMT
Organization: UCSD Usenet Gateway
NNTP-Posting-Host: ucsd.edu
Originator: daemon@ucsd.edu

sri Pete to post here but my telnet would not recognize your addr
so any way
you maybe right
the last time i bought stamps from w2azx was feb 1990
but it may still be worth a stamp to find out
or try calling carter kd3ao on your local rept. he maybe can help
or a least you can tell him i said hi hi 
THE BEAT GOES ON LAING KB3TS 73
Newsgroups: rec.radio.amateur.misc
From: feustel@netcom.com (David Feustel)
Subject: Anyone Have an ICOM 729 Yet?
Organization: DAFCO: OS/2 Software Support & Consulting
Date: Fri, 20 Nov 1992 02:14:29 GMT

I've yet to talk to any store that has a 729 in stock. Has anyone
bought one of these radios yet? If so, what do you think of it? Is the
729 as good as the 728 as reviewed in the December 92 issue of 73?
Thanks.
-- 
Dave Feustel N9MYI <feustel@netcom.com>
 
GE knew there was lots of money to be made in the diagnostic medical
machine field since it was only a matter of time before people started
getting sick from the effects of all of GE's toxic and radioactive
waste dumping. I expect GE to get into the Mortuary business next.
From: gary@ke4zv.uucp (Gary Coffman)
Newsgroups: rec.radio.amateur.misc
Subject: Re: Usefulness of Morse Code
Date: 18 Nov 92 15:35:58 GMT
Article-I.D.: ke4zv.1992Nov18.153558.9928
Reply-To: gary@ke4zv.UUCP (Gary Coffman)
Organization: Gannett Technologies Group

In article <649@ka2qhd.de.com> kd2bd@ka2qhd.de.com (John Magliacane) writes:
>[Some stuff deleted...]
>
>> Isn't amazing how none of the arguments for REQUIRING Morse Code hold
>> water??
>> I wonder if the time will ever come when Morse advocates will admit it
>> is strictly a religous concept and has no basis in technology.
>> 
>> bill    KB3YV
>> 
>Try telling anyone involved in serious EME, aurora, backscatter, or any other
>weak signal work just how arcane Morse is.
>
>If applicants are not interested in advancing the radio art, there's always
>27 MHz, where code is still not a requirement.

Since when is weak signal work the only avenue for advancing the art?
This is just a varient of the DXer mentality that infests amateur radio.
Besides, for really weak signal work, professionals have long abandoned
CW because there are *better* ways. The NASA DSN is a prime example.

>Let's face it.  CW transmitters are simple to build and understand.  ANYTHING
>that emits RF can be keyed for CW.
>
>CW transmitters are *FUN* to design, build and use.  Hams who get involved in
>circuit design early on in their amateur radio lives are very likely to
>continue in their research and development, possibly making important
>advances to the radio art.

AM, FM, and PSK transmitters, and *receivers*, are also FUN to design and 
build. Data *networks* are FUN to design and build, and a lot more important 
to the future of wireless communications than arcane weak signal work.
There's nothing wrong with weak signal work mind you, it's resulted in
some nice preamps and antenna designs, but it lags professional techniques
because of the insistance on a less than optimum modulation method. With
Costas loops, tracking data detectors, and post processed coding gain,
much weaker signals can be routinely copied than those depending on phase
incoherent on/off keying.

Gary KE4ZV
Newsgroups: rec.radio.amateur.misc
From: mjohnsto@jenny.shearson.com (Mike Johnston)
Subject: Equipment recommendations for Tech+
Organization: Lehman Brothers
Date: Mon, 23 Nov 1992 14:42:12 GMT


I'm going to be taking my Tech+ exam in about a week and naturally I
expect to pass. 8-) I want to some time making certain I get the
right equipment for what I want to do. I'm sure this is a common
question in this group, so feel free to respond via email if you
don't feel your response is of general interest.

I expect I'm going to want a decent beginner unit that's not top of
the line but that I won't want or need to upgrade for a while.
I expect to make use of CW in the HF bands and voice and packet in
the VHF/UHF bands which I am allowed to use. I want a base unit
that has respectable power output but I'm not looking for something
to blast the Northeast US. My budget is open, although I expect I'll
say no to anything over $1000. Less would obviously be better unless my
expectations are unreasonable. This obviously includes a suitable
antenna layout for the unit and whatever conceivable accessories I'll
need.

Will I be able to find a SINGLE unit that does this or should I split
the VHF/UHF from the HF CW usage and build my own (with a little help
from a friend, this might be fun and educational)? 

Bear in mind that I'm in the New York area, so if you have special knowledge
of equipment that might be more useable in this part of the country,
please let me know.

Thanks very much.

MJ
--
Michael R. Johnston, System Administrator	mjohnsto@shearson.com
"The reasonable man adapts himself to the world; the unreasonable one
persists in trying to adapt the world to himself. Therefore, all progress
depends on the unreasonable man." - G.B. Shaw
From: frankb@hpsad.sad.hp.com (Frank Ball)
Date: Fri, 20 Nov 1992 18:49:52 GMT
Subject: Re: Uniden HR2600 mod?
Organization: HP Signal Analysis Division - Rohnert Park, CA
Newsgroups: rec.radio.amateur.misc

From: randall@informix.com (Randall Rhea)
Date-Received: Thu, 19 Nov 1992 16:20:10 GMT
Subject: Uniden HR2600 mod?
Newsgroups: rec.radio.amateur.misc
Keywords: uniden 2600 hr2600 modification

*I have checked FTP and other sources, and have not found
*a modification for the Uniden HR2600 10m rig that will extend
*its frequency coverage.  I would like to be able to receive
*CB while out on the road.  (I am not interested in transmitting
*on CB.)  I have found mods for power output and packet work,
*but not for frequency extension.

*The latest volume (vol. 5) of the Artsci Radio/Tech Modifications
*book says that "you must replace the microprocessor."  I have
*no idea where I can get the replacement part or how much it would
*be, nor does it look easy to solder a new microprocessor into the rig.

*Randall Rhea                                        Informix Software, Inc. 
*Project Manager, MIS Sales/Marketing Systems    uunet!pyramid!infmx!randall
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

The new microprocesser is available from Copper Electronics.

"The Chipswitch is a custom microcomputer integrated circuit designed to
replace the existing UNIDEN microcomputer chip is these radios:  The UNIDEN
HR2510, HR2600, and Lincoln.  This item adds many more features than original
factory chip.

The Chipswitch #600-00250 $69.99
Socket 64 pins #600-00250 $8.99  one of these catalog numbers must be wrong.

Prices are cash prices, add 3.75% for credit card

1-800-626-6343

I have never used this part, nor do I know anyone who has.  I have heard
that it will tune the radio from 12 meters to over 30 MHz.

Frank Ball   1UR-M          frankb@hpsad.sad.hp.com
Hewlett Packard             (707) 794-4168 work, (707) 538-3693 home
1212 Valley House Drive     (707) 794-3844 fax, IT175, XT350, Seca 750
Rohnert Park CA 94928-4999  KC6WUG, LAW, AMA, Dod #7566, I'm the NRA.
From: rolfe@w3vh.UUCP (Rolfe Tessem)
Newsgroups: rec.radio.amateur.misc
Subject: Re: 3CX800 on 432 MHz?
Date: Sat, 21 Nov 92 21:37:57 GMT
Organization: Lucky Duck Productions

In article <9211162223.AA05059@ucsd.edu> MROWEN%STLAWU.BITNET@cunyvm.cuny.edu (Michael Owen W9IP) writes:
>The 2nd volume of the ARRL UHF/Microwave book, which has
>still not seen the light of day as far as I know, will
>contain a design for a 3CX800 amp on 432 by K1FO.  Does
>anyone know whether details on this amp (or anything similar)
>have been published elsewhere?

I'm running a pair of 3CX800s built by Russ Miller N7ART, and
I know this design is being used by a number of 432 EME stations.

Whether it's been published, and whether it's the same or
similar to the K1FO version, I have no idea.  I suggest you
contact Russ for more information.

--
Rolfe Tessem               Lucky Duck Productions
rolfe@w3vh.UUCP            96 Morton Street, NYC, NY 10014
rolfe@ldp.com              212-463-0029
From: scotto@ipars.cts.com (Scott O'Connell)
Newsgroups: rec.radio.amateur.misc
Subject: Jun's Electronics
Date: 16 Nov 92 18:57:20 GMT
Organization: Spectrum Data Services - Carlsbad, CA
X-Newsreader: TIN [version 1.1 PL6]


I have been a customer of Jun's for several years.  I have always been treated
well and will continue to do business with them.

My $.02 worth!

-- 

Scott O'Connell - N6ZEK                UUCP: {nosc, ucsd}!crash!ipars!scotto
Spectrum Data Services                 ARPA: crash!ipars!scotto@nosc.mil
Carlsbad, CA                           INET: scotto@ipars.cts.com