Date: Wed, 6 Apr 94 08:07:08 PDT
From: Info-Hams Mailing List and Newsgroup <info-hams@ucsd.edu>
Errors-To: Info-Hams-Errors@UCSD.Edu
Reply-To: Info-Hams@UCSD.Edu
Precedence: Bulk
Subject: Info-Hams Digest V94 #383
To: Info-Hams
Info-Hams Digest Wed, 6 Apr 94 Volume 94 : Issue 383
Today's Topics:
(none)
[News] NOAA/NWS To Expand Weather Radio Coverage
Alpha76 modification
ARRL Strange Proposals
Cable channel 18..
FCC.GOV
HamCom in Fergus Falls, Mn?
Hamming in Hong Kong
HAM ON BIKE (2 msgs)
Help with installation of radio in Buick
How phasing SSB Exciters Work (Was: RF and AF speech pr
Icom 2SRA
IPS Daily Report - 05 April 94
Operation of Ham radios on planes
SB320 Direction Finding in RACES
Send Replies or notes for publication to: <Info-Hams@UCSD.Edu>
Send subscription requests to: <Info-Hams-REQUEST@UCSD.Edu>
Problems you can't solve otherwise to brian@ucsd.edu.
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: 6 Apr 94 14:32:10 GMT
From: news-mail-gateway@ucsd.edu
Subject: (none)
To: info-hams@ucsd.edu
Sometime ago a query had been posted regarding WWV receivers which produce
digital output suitable for use with a computer for time clock synchronization.
I am looking for just such a beast preferrably with a software package
for use with Un*x (specifically HP-UX but I can port source code if provided).
Does anyone know where receivers like these can be purchased? I really
miss the old Heathkit :( model.
Thanx!
******************************************************************************
* Robert G. Schaffrath, N2JTX * Internet: rgs%wpmax2%gfimda@uunet.uu.net *
* Systems Engineer * CompuServe: 76330,1057 *
* Maxwell House Coffee Company * Phone: 914-335-2777 *
* Kraft General Foods Corp. * Slogan: "ervice is ur mott" *
******************************************************************************
------------------------------
Date: Wed, 6 Apr 1994 08:13:11 GMT
From: ihnp4.ucsd.edu!swrinde!gatech!wa4mei!ke4zv!gary@network.ucsd.edu
Subject: [News] NOAA/NWS To Expand Weather Radio Coverage
To: info-hams@ucsd.edu
In article <Cnr45s.15L@news.Hawaii.Edu> jherman@uhunix3.uhcc.Hawaii.Edu (Jeffrey Herman) writes:
>
>From the newspaper USA TODAY
>
> The government announced expansion of its Weather Radio to
>include all types of disaster warnings, and to increase coverage
>to 95 percent of Americans, up from 75 percent now. Vice President
>Gore said the weak link in Sunday's storms, which killed at least
>43 people in the Southeast, was the inability to get the word out.
Since I live in the area of the tornados, I'll say that Al Gore doesn't
know what he's talking about. (no surprise) The area of the tornados
is served well by 3 NWS stations, and numerous broadcast stations tied
to the EBS system. The problem is that people weren't listening to the
warnings being issued.
Unlike hurricanes, tornados strike very limited areas. They can level
the house across the street, and leave yours untouched. Since we have
many tornados in this area, and since tornado alerts are broadcast
with nearly every thunderstorm, people have grown accustomed to *ignoring*
the warnings. More NWS automated transmitters won't help that situation.
In recent years the NWS has *reduced* the number of radar equipped
originating stations and replaced them with automated relays from a
few weather service offices. That means that good localized weather
reporting has declined. So people have increasingly quit monitoring
their local automated server. If Al Gore wants to really make a
difference, he'll reopen the local weather offices so people will
again get useful reports on their local weather conditions. Then
they may start listening again.
(When some regional reporting station relayed over your local
NWS automated transmitter is saying partly cloudy, and you've
got 4 inches of partly cloudy on the ground and more falling,
you begin to lose confidence in the system.)
Gary
--
Gary Coffman KE4ZV | You make it, | gatech!wa4mei!ke4zv!gary
Destructive Testing Systems | we break it. | uunet!rsiatl!ke4zv!gary
534 Shannon Way | Guaranteed! | emory!kd4nc!ke4zv!gary
Lawrenceville, GA 30244 | |
------------------------------
Date: 6 Apr 94 12:10:05 GMT
From: news-mail-gateway@ucsd.edu
Subject: Alpha76 modification
To: info-hams@ucsd.edu
I'd like to have some advice on modification of Alpha 76 Amplifier.
My question is;
Can I replace 3-8874(3CX400) tubes with 2-3CX800 tubes?
If I do the following modification, what kind of troubles
will be expected.
According to the EIMAC POWER GRID TUBES quick reference catalog 488,
the above tube specifications are;
8874/3CX400 3CX800A7
Cathode Voltage 6.3V 13.5a
Cathode Current 3.0A 1.5A
GG Capacitance
Input 20.5pF 26.0pF
Output 6.0pF 6.1pF
Socket SK-1900 SK-1900
Chimney SK-606 SK-1906+1916
Length 2.14inch 2.52
Diameter 1.64inch 2.53
3-8874 will spend 56.7w(6.3Vx3Ax3tubes) for heater and 2-3CX800
will spend 40.5w(13.5Vx1.5Ax2ubes) for heater. So I'd like to
apply the double-voltage rectification (Voltage Doubler) to
the original (heater) transformer output.
I belive this will work, because the original heaters require 56.7w
but new heaters require 40.5w only. Then Voltage Doubler will double
the input voltage(6.3V)+20~30% extra voltage to the output, so 13.5V
or higher will be obtainable.
I just purchased the old Alpha76 and must replace all three tubes
someday (soon or later). According to the recent Ham Traders Yellow
Sheet, a new tube price is $225(8874) and $240(3CX800A7), so I
have to pay $675 for 3-8874 but $480 for 2-800A7.
Less cost (need modification however), more performance (400w more
plate dissipation).
How do you think on my idea?
Thanks in advance
Tack JE1CKA/KH0AM
#Crazy contester in far east/ pacific
..._._
------------------------------
Date: 6 Apr 1994 12:50:16 GMT
From: ihnp4.ucsd.edu!agate!howland.reston.ans.net!darwin.sura.net!news.larc.nasa.gov!eos1.larc.nasa.gov!eckman@network.ucsd.edu
Subject: ARRL Strange Proposals
To: info-hams@ucsd.edu
The criteria for DXCC eligibility are not a secret and may be
found in several ARRL publications including the ARRL Operating
Guide and the DXCC Countries List. While I don't know the
history behind the inclusion of Peter I as a DXCC country, I'm
sure that it must have followed the normal process of petition
to the DXAC and a vote.
I'm certain that the identities of the individuals who have
proposed the inclusion of the Turkish Republic of Northern
Cyprus (TRNC) as a DXCC country and the deletion of Mount
Athos can be found by writing to a member of the DXAC whose
addresses are in every issue of QST. Their actions are regularly
reported in this newsgroup as well.
Without getting into a debate over the DXCC countries list
criteria, I feel that TRNC does not qualify for DXCC status
at this time. I outlined my view in a recent issue of "QRZ
DX" which Bob Winn was kind enough to publish in full.
It's unfortunate that the issue is in many ways politically-charged
and is likely to cause some strong opinions for reasons that
have nothing to do with amateur radio.
I very much doubt that the DXAC has any hidden political
agenda in also considering the deletion of Mt. Athos at the
same time as the TRNC issue. Speaking just as a DXer, I'm
rather disturbed that one individual feels that he is the
sole voice of a DXCC "country". That hardly qualifies as
good sportsmanship and from all I know of Mt. Athos, I fail
to see how it ever qualified as a DXCC country on the basis
of the ARRL's criteria.
So, while I agree with the SV amateur's concerns about the
TRNC DXCC issue, I think that their reasoning is somewhat
misguided and I strongly doubt that the DXAC in any way
has it out for Greece or any other country.
Richard Eckman KO4MR
NASA Langley Research Center
Hampton, VA
eckman@eos1.larc.nasa.gov
------------------------------
Date: Tue, 5 Apr 1994 19:56:35 GMT
From: sgiblab!wetware!spunky.RedBrick.COM!psinntp!psinntp!arrl.org!ehare@ames.arpa
Subject: Cable channel 18..
To: info-hams@ucsd.edu
Tony Pelliccio (Anthony_Pelliccio@brown.edu) wrote:
: In article <6yu7Jc1w165w@p-cove.UUCP>, wolfman@p-cove.UUCP (Aaron Smith)
: wrote:
: > I don't know how much this has been discussed here, but I would like to
: > know what I can do about our cable system. There is a real bad cable leak
: > in our town. If I tune to 145.25 while in my car, I can even hear their
: > continuous carrier, thats how bad it is.. Who do I talke to or contact
: > about getting this problem fixed? Whenever someone transmits they get
: > into everyones channel 18 in about a half mile radius. Noone has really
: > complained to the cable company yet, probably because here it's a pay
: > station (PASS.. joy) and I don't think many people subscribe to it..
: Contact your local cable company. I'm sure they'd be VERY interested in
: hearing that their cable is leaking signal. Just tell it to them the same
: way you told us... you can hear it on 145.25. Cable channel 18 runs from
: appx 144.0 to 148.0 MHz so you're in the general ballpark.
The ARRL has a reprint of an article about this that was published
in Communcations Technology, the Journal of the Society of Cable
Television Engineers. Send a large-size SASE with three units
of postage to the ARRL Technical Department Secretary, 225 Main St,
Newington, CT and ask for the "EMI/RFI - CATVI" package. Your cable
operator will recognize this publication. It is not available
electronically, I am sorry. The ARRL Book -- Radio Frequency Interference
-- How to Find It and Fix It also has a section on CATVI.
: In addition, 2m transmissions WILL interfere if there's leakage on the
: cable.
A TV signal needs about a 40- to 50-dB signal to noise ratio. A small
leak can be enough to cause interference. If the cable operator insists
he doesn't have to worry about leaks in, tell them to look up
FCC regs 78.605, the regulations about required performance in the
cable system. This section specifies a minimum 51 dB carrier to coherent
disturbance and 40 dB signal to noise ratio.
: If the cable company should ignore your helpful comments then it's time to
: notify your local branch office of the FCC. They'll take a rather intense
: interest in the matter.
The key word is probably "Cumulative Leakage Index." This is hte
annual leakage test the cable company must pass. If anything, they
should be glad that hams are willing to help them find the leaks.
After you have read our interference packages and book, contact me
here at HQ if you need any help finding a resolution. I do have a few
low friends in high places at TCI, if that is the franchise. Yuo may
be better off dealing directly with the Service Manager or system
engineer; the repair crews don't usually understand the issues.
(PS - Hi, Tony!)
73 from ARRL HQ, Ed
--
Ed Hare, KA1CV, ARRL Laboratory, 225 Main, Newington, CT 06111
203-666-1541 ehare@arrl.org
My electronic posts and email do not necessarily represent the policy
of the ARRL, but I can probably get in trouble for them anyway!
------------------------------
Date: Wed, 6 Apr 1994 07:24:41 GMT
From: ihnp4.ucsd.edu!sdd.hp.com!saimiri.primate.wisc.edu!hpg30a.csc.cuhk.hk!hkuxb.hku.hk!pckwong@network.ucsd.edu
Subject: FCC.GOV
To: info-hams@ucsd.edu
Seth Taylor (taylor@tix.timeplex.COM) wrote:
: Tried to log into ftp.fcc.gov and I could not login as anonymous
: with my IP address as a password (usual procedure to get into an
: open FTP site). Any ideas ?
:
:
: Seth KC2WE
: ex----WA2FNF,KZ5BA
But I can do it and looked around. I just login "anonymous"
and my email address as password, I typed only "pckwong" by
mistake. Is this the reason. Try again, I have no time today.
- Philips Wong, VR2XVI
------------------------------
Date: 6 Apr 94 01:18:30 -0500
From: ihnp4.ucsd.edu!library.ucla.edu!europa.eng.gtefsd.com!news.ans.net!paperboy.amoco.com!apctrc!msc.edu!news.gac.edu!msus1.msus.edu!mhd1.moorhead.msus.edu!moewes@network.ucsd.edu
Subject: HamCom in Fergus Falls, Mn?
To: info-hams@ucsd.edu
A friend of mine and I were told that there was a convention in
Fergus Falls, Mn saturday April 9th but we haven't been able to get any
information about it. As we are yet unliscenced (hoping to test at the
convention) it has seriously limited our ability to find out about it. All
we can do is listen to people mention it in passing on the radio. So, if
someone has some information (I know it's very soon) and would mind sending
me at least some sort of time schedule I would be very greatful. Hopefully
we will both be able to pass the examination. Thanks in advance.
--
* Christopher R. Moewes *
* Moorhead, Mn 56560 /o)\ InCrEaSe ThE pEaCe *
* (218) 236-6810 \(o/ ChRiS (moewes@mhd1.moorhead.msus.edu) *
------------------------------
Date: Wed, 6 Apr 1994 07:20:28 GMT
From: ihnp4.ucsd.edu!sdd.hp.com!saimiri.primate.wisc.edu!hpg30a.csc.cuhk.hk!hkuxb.hku.hk!pckwong@network.ucsd.edu
Subject: Hamming in Hong Kong
To: info-hams@ucsd.edu
Michael Lo (ee_hflo@dma039.ust.hk) wrote:
: Chip Owens (owens@stout.atd.ucar.edu) wrote:
: : Has anyone with a U.S. ham license had success getting
: : a permit to operate in Hong Kong?
:
: : I'm going there this summer and want to operate a ham
: : station. Any help or info would be greatly appreciated.
:
: : Chip Owens, NW0O, Boulder, Colorado
:
: You can apply for a a kind of temporary license in OFTA.
: (OTFA:Office of Telecommunication Authority).
: Address: OFTA , 25/f , Wu Chung Building, Wan Choi, HK island, Hong Kong.
: ^^^^^^^^
correction : Wanchai
: Michael Lo
: VR2YJR
:
:
:Good Luck & 73 !
Philips Wong, VR2XVI
------------------------------
Date: 6 Apr 1994 07:03:12 GMT
From: tulane!rs4.tcs.tulane.edu!sikorski@ames.arpa
Subject: HAM ON BIKE
To: info-hams@ucsd.edu
Dean Cookson (cookson@mbunix.mitre.org) wrote:
: In article <2ns4t8$ch@toads.pgh.pa.us>, <fred@dke.pgh.pa.us> wrote:
: >
: >I'm trying to install a Kenwood 732A (UHF/VHF) Ham radio on my 86
: >Goldwing SEi.
: Bummer, I had visions of a large hunk of smoked pork bungie corded to
: a luggage rack. Oh well...
Or another followup to the "Cop Bikes" thread...
------------------------------
Date: Wed, 6 Apr 1994 14:10:56 GMT
From: envoy!equinox.ccs.unr.edu!destree@uunet.uu.net
Subject: HAM ON BIKE
To: info-hams@ucsd.edu
You may want to check out the April issue of 73 magazine. They
have an article about a group of motorcycle mobile hams. You could
probably contact the group for more info. I'm sure one of em' has
kludged their radio equipment with their intercom system.
73's Louis
BTW: I've noticed a LOT of ham calls in .sig files here on rec.moto.
Wonder why...
Louis A. Destree University of Nevada, Reno
destree@equinox.unr.edu <> destree@equinox.bitnet Electrical Engineering
Amateur Radio: N7XNX Bike: 1980 Honda CB750C
"When things go from bad to worse, the cycle will repeat itself!"
------------------------------
Date: Wed, 6 Apr 1994 08:33:00 GMT
From: ihnp4.ucsd.edu!swrinde!gatech!wa4mei!ke4zv!gary@network.ucsd.edu
Subject: Help with installation of radio in Buick
To: info-hams@ucsd.edu
In article <1994Apr5.195147.8501@brtph560.bnr.ca> cnc23a@b4pph13e.bnr.ca (Ken Edwards) writes:
>A ham friend of mine has been having a terrible time installing a radio
>into an '87 Buick Centry 4dr. Is there anyone out there who has been through
>this (or advoided it) and can give me some pointers to pass on ?
Think *chainsaw*. It cuts through the plastic crap passing itself off
as a dash, and the sparks signify when you've hit real metal you can
bolt the radio to. :-)
Now seriously, what *kind* of installation problem is he having?
Gary
--
Gary Coffman KE4ZV | You make it, | gatech!wa4mei!ke4zv!gary
Destructive Testing Systems | we break it. | uunet!rsiatl!ke4zv!gary
534 Shannon Way | Guaranteed! | emory!kd4nc!ke4zv!gary
Lawrenceville, GA 30244 | |
------------------------------
Date: Wed, 6 Apr 1994 08:17:59 GMT
From: ihnp4.ucsd.edu!swrinde!gatech!wa4mei!ke4zv!gary@network.ucsd.edu
Subject: How phasing SSB Exciters Work (Was: RF and AF speech pr
To: info-hams@ucsd.edu
In article <CnrLxD.Hww@srgenprp.sr.hp.com> alanb@sr.hp.com (Alan Bloom) writes:
>
>For some reason, the "third method" of SSB generation invented by Weaver has
>never caught on. Perhaps part of the reason is the fact that the suppressed
>carrier comes out right in the middle of the audio passband. Even with
>40 dB of carrier suppression (typical with diode balanced mixers), people
>might find it objectionable because of the AGC action of typical SSB
>receivers. (Which would make the carrier "pop up" during speech pauses.)
>
>I have often thought, though, that the Weaver method would be well-suited
>to implementation in a DSP, since you can get mathematically perfect
>carrier suppression.
Better still, make *use* of the carrier to implement ACSSB compandoring.
Do the final notching at the receiver. Naturally audio quality would
suffer with a notch at 1800 Hz, but that won't hurt communications
effectiveness much.
Gary
--
Gary Coffman KE4ZV | You make it, | gatech!wa4mei!ke4zv!gary
Destructive Testing Systems | we break it. | uunet!rsiatl!ke4zv!gary
534 Shannon Way | Guaranteed! | emory!kd4nc!ke4zv!gary
Lawrenceville, GA 30244 | |
------------------------------
Date: 6 Apr 94 08:13:06 EST
From: ihnp4.ucsd.edu!agate!howland.reston.ans.net!usenet.ins.cwru.edu!news1.hh.ab.com!iccgcc.cs.hh.ab.com!lieser@network.ucsd.edu
Subject: Icom 2SRA
To: info-hams@ucsd.edu
I'm planning to take my first (Tech) exam in the near future, and
was thinking of buying an Icom 2SRA so as to have some scanner
coverage in addition to the ability to transmit on 144-148MHz.
Are there any problems with coupling a wide-coverage scanner with
the transmitter? Is the 2SRA easy to use, and is its performance
good? I'm wondering if I should just go with a simpler (and cheaper)
rig.
Thanks in advance,
Ed Lieser
Allen-Bradley Co., Cleveland, Ohio
------------------------------
Date: Tue, 5 Apr 1994 23:19:14 GMT
From: ihnp4.ucsd.edu!usc!howland.reston.ans.net!EU.net!sunic!trane.uninett.no!nntp.uio.no!ifi.uio.no!wabbit.cc.uow.edu.au!metro!ipso!rwc@network.ucsd.edu
Subject: IPS Daily Report - 05 April 94
To: info-hams@ucsd.edu
SUBJ: IPS DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 5/2330Z APRIL 1994 BY IPS RADIO AND SPACE SERVICES
FROM THE REGIONAL WARNING CENTRE (RWC), SYDNEY.
SUMMARY FOR 5 APRIL AND FORECAST UP TO 8 APRIL
IPS Warning 10 was issued on 31 March and is current
for interval April 3 - April 14 (coronal hole).
-----------------------------------------------------------
1A. SOLAR SUMMARY
Activity: Very Low
Flares: None
Observed 10.7 cm flux/Equivalent Sunspot Number : 077/16
1B. SOLAR FORECAST
06 April 07 April 08 April
Activity Very low Very low Very low
Fadeouts None expected None expected None expected
Forecast 10.7 cm flux/Equivalent Sunspot Number : 075/13
1C. SOLAR COMMENT
None.
-----------------------------------------------------------
2A. MAGNETIC SUMMARY
Geomagnetic field at Learmonth: one major storm period, unsettled to
active at other times.
Estimated Indices : A K Observed A Index 4 April
Learmonth 27 3344 6433
Fredericksburg 25 39
Planetary 35 50
Observed Kp for 4 April: 6675 4434
2B. MAGNETIC FORECAST
DATE Ap CONDITIONS
06 Apr 35 Active to minor storm.
07 Apr 35 Active to minor storm.
08 Apr 35 Active to minor storm.
2C. MAGNETIC COMMENT
Coronal hole induced activity currently in progress.
3A. GLOBAL HF PROPAGATION SUMMARY
LATITUDE BAND
DATE LOW MIDDLE HIGH
05 Apr normal fair fair-poor
PCA Event : None.
3B. GLOBAL HF PROPAGATION FORECAST
LATITUDE BAND
DATE LOW MIDDLE HIGH
06 Apr normal-fair fair poor
07 Apr normal-fair fair poor
08 Apr normal-fair fair poor
3C. GLOBAL HF PROPAGATION COMMENT
Fair-Poor HF comms quality expected at times over next three days.
Conditions at high lats are expected to remain degraded
until April 14.
-----------------------------------------------------------
4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY
MUFs at Sydney were about 15% above predicted monthly values
Observed T index for 05 April: 64
Predicted Monthly T Index for April is 40.
4B. AUSTRALIAN REGION IONOSPHERIC FORECAST
DATE T-index MUFs
06 Apr 40 Near predicted monthly values.
07 Apr 40 Near predicted monthly values.
08 Apr 40 Near predicted monthly values.
4C. AUSTRALIAN REGION COMMENT
Fair-Poor HF comms conditions expected until April 13, especially
during local night.
--
IPS Regional Warning Centre, Sydney |IPS Radio and Space Services
email: rwc@ips.oz.au fax: +61 2 4148331 |PO Box 5606
RWC Duty Forecaster tel: +61 2 4148329 |West Chatswood NSW 2057
Recorded Message tel: +61 2 4148330 |AUSTRALIA
------------------------------
Date: 6 Apr 1994 10:48:20 GMT
From: ihnp4.ucsd.edu!usc!math.ohio-state.edu!jussieu.fr!univ-lyon1.fr!elendir@network.ucsd.edu
Subject: Operation of Ham radios on planes
To: info-hams@ucsd.edu
Uncle Dave (dev@armory.com) wrote:
: i know this subject comes up every so often, and if it's in teh
: faq, then i didn't look carefully enough, but what's the deal on
: operation of ham radios on a plane?
Well, at least in CEPT countries, there is no such problem since it is
utterly forbidden. It's written on the back of the license : Operation from
any kind of aircraft is forbidden.
What about trains ?
Vince.
--
PSG --- Paris SG football club. | Ham radio call : F1RCS
-----------------------------------------------------------------------
ENST - Ecole Nationale Superieure des Telecommunications, Paris, France
------------------------------
Date: Wed, 6 Apr 1994 08:51:16 GMT
From: news.Hawaii.Edu!uhunix3.uhcc.Hawaii.Edu!jherman@ames.arpa
Subject: SB320 Direction Finding in RACES
To: info-hams@ucsd.edu
In article <199404060620.XAA13337@ucsd.edu> enge@almaden.ibm.COM (Roy Engehausen) writes:
>Bid: $RACESBUL.320
>Subject: SB320 Direction Finding in RACES
>
>
>
>In addition to such uses for direction finding, as in the RACES
>type operations, there are others as well; the "fox hunt"
>(direction finding contest) of the local Amateur Radio club being
>an example. Such activities range from an ongoing "sport" to the
>real preparation for serious and dedicated direction finding.
>Both aspects have their place, but those who see "fox hunts" only
>as a pastime and purposely overlook the serious nature of the
>work that can be done, are a discredit to the Amateur Radio
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>Service whose primary purpose - as set forth in FCC regulations -
>is public service. (eom)
Gosh, Roy - that's a little strong, isn't it?
Jeff NH6IL
------------------------------
End of Info-Hams Digest V94 #383
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******************************