QRZ! Ham Radio 3/QRZ Ham Radio Callsign Database - Volume 3.iso/digests/infoham/931406.txt

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Date: Tue, 30 Nov 93 10:30:20 PST
From: Info-Hams Mailing List and Newsgroup <[e-mail]>
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Subject: Info-Hams Digest V93 #1406
To: Info-Hams


Info-Hams Digest            Tue, 30 Nov 93       Volume 93 : Issue 1406

Today's Topics:
                          DSP units (2 msgs)
                    EJASA: SETI Information Source
                              expensive?
                      FT530 receiver problems??
                        ICOM 2SRA headset/vox
                        MCW with an HTX-202???
                   Need Jan '78 Ham Radio magazine
                         Odd Static Observed
             UHF Repeater:  Hi Pro Mk I  Service/Manual?
              using a radio off frequency in emergencies
               W5YI's coverage of "temporary callsigns"

Send Replies or notes for publication to: <[e-mail]>
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Problems you can't solve otherwise to [e-mail].

Archives of past issues of the Info-Hams Digest are available
(by FTP only) from UCSD.Edu in directory "mailarchives/info-hams".

We trust that readers are intelligent enough to realize that all text
herein consists of personal comments and does not represent the official
policies or positions of any party.  Your mileage may vary.  So there.
----------------------------------------------------------------------

Date: 30 Nov 93 11:06:04 GMT
From: ddsw1!indep1![e-mail]
Subject: DSP units
To: [e-mail]

In article <[e-mail]> [e-mail] (David Kirkpatrick) writes:
>With sentence structure like this your asking someone to be clear ??
                                  ^^^^^                           ^^^
   With punctuation and grammar like this, you're complaining about someone's
sentence structure?

--
+------------------------------------------------------------------------------+
|   Cliff Sharp  |      [e-mail]   OR  [e-mail]       |
|     WA9PDM     |                 Use whichever one works                     |
+------------------------------------------------------------------------------+

------------------------------

Date: Mon, 29 Nov 1993 21:01:13 GMT
From: ftpbox!mothost!merlin.dev.cdx.mot.com![e-mail]
Subject: DSP units
To: [e-mail]

With sentence structure like this your asking someone
to be clear ??

------------------------------

Date: 29 NOV 93 18:01:30 EST
From: pa.dec.com!nntpd.lkg.dec.com!verga.enet.dec.com![e-mail]
Subject: EJASA: SETI Information Source
To: [e-mail]

        EJASA:  SETI Information Source

        I am Larry Klaes, Editor of the Electronic Journal of the
    Astronomical Society of the Atlantic (EJASA), a position I have
    held since the founding of the EJASA in August of 1989.

        The EJASA is published by the Astronomical Society of the
    Atlantic, Incorporated.  The ASA is a non-profit organization
    dedicated to the advancement of amateur and professional astronomy
    and space exploration, as well as the social and educational needs
    of its members.  The EJASA is a place for those on the Internet to
    publish their works on the field.  The EJASA is published monthly
    and posted on the USENET astronomy and space newsgroups.

        Numerous articles in the EJASA have been devoted to SETI and
    its related fields.  Included among them is the original six-part
    paper by Dr. Stuart Kingsley of Columbus, Ohio on his work with
    Optical SETI in the January 1992 issue.  Dr. Kingsley was profiled
    in the Summer 1993 issue of The Planetary Society's Bioastronomy
    News publication and spoke at the recent Bioastronomy Conference
    in Santa Cruz, CA.

        Robert Dixon, head of Earth's longest-running SETI program
    located at Ohio State University, contributed an article on the
    project's history in the June 1992 issue of the EJASA.

        The December issue will feature a SETI article by Guillermo A.
    Lemarchand from the University of Buenos Aires, Argentina.

        The complete list of current SETI articles in the EJASA follows
    this paragraph.  All are available either from me or the ASA anonymous
    FTP site at chara.gsu.edu (131.96.5.29).

        "Does Extraterrestrial Life Exist?", by Angie Feazel - November 1989

        "Suggestions for an Intragalactic Information Exchange System",
         by Lars W. Holm - November 1989

        "Radio Astronomy: A Historical Perspective", by David J. Babulski
         - February 1990

        "Getting Started in Amateur Radio Astronomy", by Jeffrey M. Lichtman
         - February 1990

        "A Comparison of Optical and Radio Astronomy", by David J. Babulski
         - June 1990

        "The Search for Extraterrestrial Intelligence (SETI) in the Optical
         Spectrum, Parts A-F", by Dr. Stuart A. Kingsley - January 1992

        "History of the Ohio SETI Program", by Robert S. Dixon - June 1992

        "New Ears on the Sky: The NASA SETI Microwave Observing Project",
         by Bob Arnold, the ARC, and JPL SETI Project - July 1992

        "First International Conference on Optical SETI", by Dr. Stuart A.
         Kingsley - October 1992

        "Conference Preview: The Search for Extraterrestrial Intelligence
         (SETI) in the Optical Spectrum", by Dr. Stuart A. Kingsley
         - January 1993

 I will make available upon request the complete list of EJASA
    back issues.  I will be glad to send on-line copies of any issues
    to those who wish to see them.  Readers are also welcome to submit
    papers on astronomy and space exploration for publication in the
    EJASA.

        Regards,

        Larry Klaes  [e-mail]
       or - ...!decwrl!verga.enet.dec.com!klaes
           or - [e-mail]
                     or - [e-mail]

        EJASA Editor, Astronomical Society of the Atlantic

         "When we try to pick out anything by itself, we find it
          hitched to everything else in the Universe." - John Muir

------------------------------

Date: 30 Nov 93 15:36:13 GMT
From: ogicse!emory!kd4nc!ke4zv![e-mail]
Subject: expensive?
To: [e-mail]

In article <[e-mail]> [e-mail] (Bill Macpherson) writes:
>
>I should have responded the first time ................. Bill
>
>>I was SHOCKED to see that the mainstay computer in packet
>>was the commodore 64. I have one, collecting dusting my basement for
>>years.
>
>I don't know why you're shocked to see the C=64 as a mainstay in Packet.
>There is no need for wizz-bang horsepower, just to print little characters
>to the screen.

Indeed, an even cheaper approach is to use a dumb terminal or ASR33
to work with the *Terminal* Node Controller since you don't have to
tie up a TV set too, if all you need is to print little characters
on a screen or paper. Of course if you want to take advantage of
the more general features of packet, such as file and Email transfer,
and if you want to take advantage of higher speeds, you'll dump the
*Terminal* Node Controller and the clunky old display technology and
adapt a DMA digital interface card in a more modern bus oriented
computer running some competent networking software.

>In fact it was innovation by some programmers in Germany
>that brought us the Baycom TNC. If this isn't an application of high tech
>( relatively speaking ) what is. It may be old, and not the latest technology,
>but that in itself doesn't make it useless. If you want all the latest "
>Bells and Whistles " Ham Radio can be expensive. If you want what works, and
>are willing to expend some effort and/or elbow grease, Ham Radio can be
>quite reasonable, while still being innovative.

Baycom is a neat hack, though I wouldn't call it high tech, and it doesn't
require a C64, IBM compatables work too. But it is a low speed solution
oriented to squelched FM radios, and one that excessively ties up your
computing resources counting zero crossings. It's satisfactory for the
trivial terminal to terminal chat function on an otherwise unused computer,
but that's a small part of what packet is capable of doing.

Gary
--
Gary Coffman KE4ZV          | Where my job's going,  | gatech!wa4mei!ke4zv!gary
Destructive Testing Systems | I don't know. It might | uunet!rsiatl!ke4zv!gary
534 Shannon Way             | wind up in Mexico.     | emory!kd4nc!ke4zv!gary
Lawrenceville, GA 30244     |          -NAFTA Blues  |

------------------------------

Date: 30 Nov 93 14:50:18 GMT
From: ogicse!emory!kd4nc!ke4zv![e-mail]
Subject: FT530 receiver problems??
To: [e-mail]

In article <[e-mail]> [e-mail] (Jeremy L. Utley) writes:
>In article <2cges6$[e-mail]> [e-mail] (Steven Adams) writes:
>>I have noticed that my FT530 receives some of our local repeaters when it
>>is tuned slightly off of the known freq. For example the 145.23 may come
>>in a little better at 145.225 and 145.235.  Any ideas??
>
>This is because of the wide bandwidth of FM transmissions (I believe).  Because
>FM transmissions take up so much bandwidth, the transmissions can be heard
>slightly off-frequency.

Well there's a little more than that going on since he said he received
signals *better* when tuned off frequency. One plausible explanation that's
linked to the bandwidth of FM transmissions for what you're experiencing
could be that the signals you are monitoring are *wider* than the amateur
normal 5 kHz deviation. In that case, the narrow bandwidth (relatively)
of your receiver won't detect them properly. By tuning off, you can slope
detect one sideband of the signal and receive it clearer. This effect is
very evident if you try to listen to an FM broadcast channel with a NBFM
receiver. Some repeater operators mistakenly overdeviate their transmitters
following the "all knobs to the right" philosophy. It doesn't work well
with narrow receivers. This overdeviation is a chronic problem on packet
where the higher frequency components of the signal carry the information.

Gary
--
Gary Coffman KE4ZV          | Where my job's going,  | gatech!wa4mei!ke4zv!gary
Destructive Testing Systems | I don't know. It might | uunet!rsiatl!ke4zv!gary
534 Shannon Way             | wind up in Mexico.     | emory!kd4nc!ke4zv!gary
Lawrenceville, GA 30244     |          -NAFTA Blues  |

------------------------------

Date: 30 Nov 93 16:17:55 GMT
From: [e-mail]
Subject: ICOM 2SRA headset/vox
To: [e-mail]

Netlanders:

I have an ICOM 2SRA and would like to integrate a older ICOM VOX/Headset
combination into the newer radio.  I'm looking for anyone with experience
regarding integration of the ICOM HS-10SA/HS-10 combination into this
radio OR with information for the HS60, which is the unit that is
produced to be used with the 2SRA.

Any information would be appreciated.  Direct mail is best.....

73s.....Troy

-----------------------------------------------------------------------------
|  Troy T. Pummill, N6XMV        |  [e-mail]                            |
|  Manager, Applications Eng.    |  ...uunet!lanslide.hls.com!trop          |
|  Hughes LAN Systems            |                                          |
|  [phone]                |  1225 Charleston Rd., Silicon Gulch      |
|  Mountain View, CA  94043      |  The preceding drivel is entirely my own!|
------------------------------------ ----------------------------------------
Invisible airwaves crackle with life, bright antennae bristle with the energy
Emotional feedback on timeless wavelength, bearing a gift beyond price....
Almost free.             "Spirit of Radio" - Rush

------------------------------

Date: 30 Nov 93 14:59:16 GMT
From: ogicse!emory!kd4nc!ke4zv![e-mail]
Subject: MCW with an HTX-202???
To: [e-mail]

In article <[e-mail]> [e-mail] (Douglas J Renze) writes:
>I have a radio shack htx-202.  I'm interested in netting with some other
>locals trying to up our code-speed via 2-meter MCW (until I get my HF rig
>on the air).  Question:  How could I do MCW with it?  I'd prefer to use
>something which would key the transmitter semi-QSK-wise when I hit the code
>key--know what I mean?

Some keyers used to have this feature built in. An old TO style keyer
I had used a separate PTT line that was activated prior to the first
character. You can duplicate this by diode ORing the paddle contacts and
feeding that trigger to a 555 used as a retriggerable one shot. You
can adjust the delay from after the last paddle closure to PTT release
to suit your sending style. If you're using a straight key, you can
use a dual 555 package and make the second part the audio oscillator
for your MCW.

Since the HTX-202 uses the leaky mike PTT technique, the first 555
section would pull down a 3 kohm resistor hooked to mic in, and the
second stage would capacitor couple the tone to the same point. You
can slap this together on one of the Radio Shack proto boards in a
few minutes.

Gary
--
Gary Coffman KE4ZV          | Where my job's going,  | gatech!wa4mei!ke4zv!gary
Destructive Testing Systems | I don't know. It might | uunet!rsiatl!ke4zv!gary
534 Shannon Way             | wind up in Mexico.     | emory!kd4nc!ke4zv!gary
Lawrenceville, GA 30244     |          -NAFTA Blues  |

------------------------------

Date: 30 Nov 93 15:12:21 GMT
From: ogicse!news.tek.com!tekig7![e-mail]
Subject: Need Jan '78 Ham Radio magazine
To: [e-mail]

I'm looking for an article from the January 1978 _Ham Radio_
magazine.  If you can help, please e-mail me.

Thanks,
Mike
--
Michael A. Gauland [e-mail]
AA7JF   [phone]

------------------------------

Date: 29 Nov 1993 14:46:23 GMT
From: pacbell.com!sgiblab!sgigate.sgi.com!olivea!inews.intel.com!ilx018.intel.com!ilx049![e-mail]
Subject: Odd Static Observed
To: [e-mail]

I have noticed that power-line noise can vary a lot
by frequency.  For example, I had one of those cheapo
120-220 volt power converters, that generated tons of HF interference.
Checking the amount of noise at different frequencies, I noticed
that going from 10 to 12 MHz, the noise almost disappeared,
and anywhere from 2 to 10 MHz it was loud.  It may depend on the
resonances of your antenna, power lines, etc.  E.g. if a piece of house
wiring resonates at a particular frequency, the noise may be a
lot louder (or weaker) at that frequency.

--

-------------------------------------------------------------------
Doug Braun     Intel Israel, Ltd.      M/S: IDC1-41
               Tel: [phone]   [e-mail]

------------------------------

Date: 30 Nov 93 11:15:50 EST
From: titan.ksc.nasa.gov!titan.ksc.nasa.gov![e-mail]
Subject: UHF Repeater:  Hi Pro Mk I  Service/Manual?
To: [e-mail]

I'm looking for a manual for a Hi Pro UHF repeater
or any similar models.  Our local club recently
acquired the repeater but no manual was available.
Any help would be greatly appreciated.

TNX
73
Tom
AD4NA
Titusvillle Amateur Radio Club (TARC)

------------------------------

Date: 30 Nov 93 11:19:55 EST
From: library.ucla.edu!europa.eng.gtefsd.com!news.umbc.edu!eff!news.kei.com!world!ksr![e-mail]
Subject: using a radio off frequency in emergencies
To: [e-mail]

[e-mail] (prvalko) writes:
>Steve,

>In a real  life and death situation, do YOU really care?

>I'd be happy to pay a $10,000 fine, forfeit a rig or even a license if
>it meant saving my family.

In a sense, this is what it all really comes down to.

But it turns out that the Communications Act of 1934 authorizes *anyone*, not
just hams, to use any radio at their disposal in an emergency involving
possible loss of life if normal means of communication are unavailable.
However, you'll have to expect to prove that you had no realistic choice to
a skeptical court (as well as to a Sherriff's department that would probably
really like to keep the equipment they took even if they know darned well
that they aren't entitled to it...).

------------------------------

Date: Tue, 30 Nov 1993 16:19:02 GMT
From: library.ucla.edu!europa.eng.gtefsd.com!howland.reston.ans.net!vixen.cso.uiuc.edu!sdd.hp.com!hpscit.sc.hp.com!cupnews0.cup.hp.com![e-mail]
Subject: W5YI's coverage of "temporary callsigns"
To: [e-mail]

It boogles my mind that people would oppose the 'instant' license proposal.
This mechanisim exists in the marine band, and perhaps others. I can think
of only two reasons this proposal is frowned on:

1. I had to sit around six long weeks waiting for my license, and
   by golly, you are going to wait too.

2. That is what they use to do in CB, and by golly, we are better than
   CB.

I personally can not see one reason for not adopting the proposal. Currently
we allow instant access to new privileges on upgrading, why not access to
the privileges when first obtaining a license?

Jim, WA6SDM
[e-mail]

------------------------------

Date: 30 Nov 93 12:18:51 GMT
From: munnari.oz.au!metro!news.ci.com.au!eram![e-mail]
To: [e-mail]

References <[e-mail]>, <[e-mail]>, <[e-mail]>
Subject : Re: Calculating SWR

In article <[e-mail]>,
    [e-mail] (Galen Watts) writes:

| >I am not trying to be mean, but did you sit a radio theory test for your
| >amateur license ?
|
| Yes, he did.  SWR formulae are not on amateur tests in America.

Notwithstanding the fact that I distinctly remember seeing that formula
on my own exam (in Australia) and no doubt getting it wrong, don't they
teach you to look up a reference book over there?

This is getting to be like sci.electronics; can anyone tell me what
the pinout of a 555 is?

--
Dave Horsfall (VK2KFU)    VK2KFU @ VK2RWI.NSW.AUS.OC     PGP 2.3
[e-mail]           ...munnari!esi.COM.AU!dave    available

------------------------------

Date: 30 Nov 93 14:39:38 GMT
From: ogicse!emory!kd4nc!ke4zv![e-mail]
To: [e-mail]

References <[e-mail]>, <1993Nov27, <[e-mail]>
Reply-To : [e-mail] (Gary Coffman)
Subject : Re: Miss Manners in the Novice Sub-bands? G's silliness.

In article <[e-mail]> [e-mail] (Bill Macpherson) writes:
>
>>>You could verbally *spell* the words to the person and their language centers
>>>would be active too, but that doesn't mean that spelling is a language.
>>>It's the natural language *words* being spelled that are units of language
>>>(when coupled with grammatical structure). Stepping back one level further
>>>to an aural encoding of the alphabet used to spell words, Morse is certainly
>>>even further divorced from language.
>
>Since language inherently includes Spelling, and Grammar.

Language does not inherently include Spelling, though grammar is an
inherent part of language. Many languages include no written form,
and some that do, such as Chinese, use pictographic representations
of words and/or ideas rather than the alphabetic spellings that are
used with most European languages. And you can't make a case that
Morse has a grammar separate from the natural language alphabetic
spellings that it encodes.

>There are perforce a number of Morse dialects in the English Speaking World.
>Further, since grammar is a function of the Native Language, Japanese,
>Chinese, French, German, Dutch, etc. have a different sense of Grammar.
>Therefore Morse is not a Universal Language, but rather a Family of semi
>transportable languages.

Morse, like ASCII, is merely an alphabetic encoding that can be *used*
to convey information in a natural language that has alphabetic spelling
in it's written form. It's not a language itself since it has no words or
grammatical structure of it's own.

Gary
--
Gary Coffman KE4ZV          | Where my job's going,  | gatech!wa4mei!ke4zv!gary
Destructive Testing Systems | I don't know. It might | uunet!rsiatl!ke4zv!gary
534 Shannon Way             | wind up in Mexico.     | emory!kd4nc!ke4zv!gary
Lawrenceville, GA 30244     |          -NAFTA Blues  |

------------------------------

Date: 30 Nov 93 14:26:50 GMT
From: ogicse!emory!kd4nc!ke4zv![e-mail]
To: [e-mail]

References <[e-mail]>, <2d6k02$[e-mail]>, <[e-mail]>
Reply-To : [e-mail] (Gary Coffman)
Subject : Re: 6 Meter Transceiver Advice ? ? ?

In article <[e-mail]> [e-mail] (Geoffrey S. Mendelson) writes:
>  [e-mail] (John H. Taylor - K3ZKA) writes:
>  >>I am interested in getting a pair of used 6 meter transceivers for my
>  >>father (KD4BWR) and myself; he is a no-code tech and we will use them for
>  >>scheds.
>  >>Would like to know what would be a good, economical choice?
>
>>Six meter rigs are fairly rare, and usually sucked up quick at hamfests.
>>One pretty good option is to get some commercial two-way radios, that were
>>previously tuned on a frequency in the high end of the low-VHF range
>>(40-50 MHz), and recrystal them and retune for the ham band.  I've had
>>lots of good succes with Motorola Motracs and others.
>
>Note that these are FM and therefore limited in range (except via repeaters).
[SSB rig recomendations deleted]

Don't believe this. Unless you are dealing with C/N ratios below 10 db,
NBFM will do as well as SSB for distance, and will sound better because
of the FM threshold effect. Only when the C/N drops below threshold
values will SSB be markedly superior. If you intend to maintain a schedule,
rather than exchanging 599s with some DX station you can barely hear, FM
will do fine.

As with any medium range VHF contact, you'll do better with horizontally
polarized directional antennas than you will with low gain vertical
omni antennas. FM has received an undeserved reputation as a short
range only mode. It's not true. The reputation comes primarily from the
different antennas normally used. Note also that the Motracs, Micrors,
GE Exec IIs, and the like will usually be in the 100 watt range while
many multimode rigs will only be 10 watts. And of course these FM rigs
are also available cheaply from commercial surplus. The 10:1 power advantage,
coupled with the FM threshold effect, will more than make up for the 6:1
bandwidth advantage of SSB. If you can afford high power SSB equipment,
it will of course have the advantage at ultimate weak signal levels, but
that's probably unimportant to you for maintaining schedules with your
father since you'll likely want to exchange more than signal reports
in order to add a postal card to your collection. Your objective will
be a S/N ratio of 20 db or better for a communications quality link.
You can get that with common FM equipment at a signal level of 0.5 uV.
A SSB signal a that level will have a 12 db S/N at best with common
multimode radios. (Note that antenna mounted GASFET preamps can improve
both numbers.)

Gary
--
Gary Coffman KE4ZV          | Where my job's going,  | gatech!wa4mei!ke4zv!gary
Destructive Testing Systems | I don't know. It might | uunet!rsiatl!ke4zv!gary
534 Shannon Way             | wind up in Mexico.     | emory!kd4nc!ke4zv!gary
Lawrenceville, GA 30244     |          -NAFTA Blues  |

------------------------------

End of Info-Hams Digest V93 #1406
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