HDTenEightyP/NetNews huggingface dataset:
From: awinterb@diana.cair.du.edu (Art Winterbauer)
Subject: "SUDDEN" receiver problems
Organization: University of Denver, Denver, Colorado
Date: Sat, 19 Dec 92 00:47:55 GMT

I've just built the 30-meter version of the Sudden receiver (as
shown in the October 91 issue of 73 magazine) and am having
trouble getting the bandpass filter tuning to operate properly.

1.    T3 has been adjusted to 10.100 with no problem.  The little 
      oscillator can be heard easily on another receiver.

2.    A signal generator is being used to pump a signal into the  
      Sudden receiver which does indeed pick that up.  However,   
      the signal does not vary in strength when T1 and T2 coils   
      are adjusted.

3.    Regular signals on the air are too weak to be picked up by  
      the Sudden, even when signals with S9+ (on another receiver) 
      are attempted.

Steps taken so far:

1.    Board examined for correct placement of parts.
2.    Solder joints examined for cold solder or solder bridges.

Steps not taken so far:

1.    Compare the circuit layout with the schematic for
      discrepancies.

Questions:

1.    Have any followup articles been written in 73 since October 
      pointing out discrepancies between the schematic and the    
      layout?

2.    Is tuning especially touchy with T1 and T2?  I've gone      
      pretty slowly with both.

3.    Has anyone else experienced other difficulties getting the  
      receiver to function?

Thank you in advance, Art.

-- 
Art Winterbauer  N0OQS
Internet:  awinterb@du.edu OR awinterb@diana.cair.du.edu
Packet:    n0oqs @ w0gvt.#neco.co.usa
From: galvin@rockdal.AUd.alcatel.COM (John R. Galvin)
Newsgroups: rec.radio.amateur.misc
Subject: UNSUBSCRIBE
Date: 18 Dec 92 22:40:26 GMT
Organization: UCSD Usenet Gateway
NNTP-Posting-Host: ucsd.edu
Originator: daemon@ucsd.edu

UNSUBSCRIBE
From: thweatt@rtsg.mot.com (John A. Thweatt)
Subject: 2meter purchase - HELP NEEDED!!!
Organization: Motorola Inc., Cellular Infrastructure Group
Date: Tue, 15 Dec 1992 18:19:25 GMT

I am interested in purchasing a Kenwood Model TR-2400 2m FM Synthesized
Radio and would like to ask the users of this net's advise.  This radio
will be purchased for $125 which includes a battery, recharger, base platform,
(which lets you plug in the radio allowing interface to power and antenna).

This radio has a some what burned-out LCD Display, a Frequency Range of 144.000 
to 147.995 MHz wiht +/- 750 Hz at 25oC (for section of 5KHz channels), 800 
channels, 10 memory channels, automatic memory scanning (for 'busy' or 
'open' channels), Built-in touch-tone generator using 16-button keyboard,
UP/DOWN manual scanning from 143.900 to 148.495 MHz in single or fast 
continuous 5-KHz steps.  Even operates on MARS repeaters within this range
by using memory O for transmit offset frequency,  etc... I think you can
seperate receive and transmit by 600Hz??

Transmitter Section: RF output power 1.5 Watts, Max. Freq. Dev +/- 5KHz, Less
than -60dB spurious Radiation

Receiver Section:  Double superheterodyne, 1st IF 10.7MHz, 2nd IF 455kHz.
Sensitivity Less thank 0.2 uV for 12dB SINAD.

The main reason for buying this radio, is to allow phone patch service in
case of an emergency.  I want to make sure I can get the coverage I need.
For those of you that know the IL area, we live around Crystal Lake and
would like to have coverage from there to Northbrook.  I understand that
we will need to join a repeater (or maybe two) but I would like to make
sure that this is a sufficient radio to have the coverage and features 
we will need.  It has been indicated that I might also need a antenna for
the car and might need an upgraded battery??? What does one of these antennas
cost?  Does anyone know what repeaters we would need to use?  Does this sound
like it would be a good radio for my needs?  Does anyone know of any better
deals for my application?  I would like to make sure that if the battery
dies that I could still use this radio (remember it is targeted for case of
emergencies - a dead battery maybe a good reason to use the radio).  Your
help is needed since I need to make up my mind by Friday (12/18/92).

Thanks,
John T.
Newsgroups: rec.radio.amateur.misc
Subject: Re: Alternator noise (was Re: thanks...)
From: emd@ham.almanac.bc.ca
Date: Fri, 18 Dec 92 20:51:21 PST
Distribution: world
Organization: Robert Smits

markm@bigfoot.sps.mot.com (Mark Monninger) writes:

> In article <P4suVB4w165w@jab.tucson.az.us> cobra@jab.tucson.az.us (Ken  
> Thompson) writes:
> > ... 
> > PLug noise is easier to eliminate; alternator (or regulator) noise is a 
> > bit more of a challenge...
> > ...
> You got that right. I recently installed a converted Motorola radio (Mocom  
> 70) in my old (1976) Ford van. It works fine except for alternator noise  
> (whine) in the transmitted signal. I don't hear any noise in the receive  
> audio. I've installed a filter and run all supply lines directly to the  
> battery posts. I can't seem to get rid of the noise. Can a problem with  
> the alternator cause it? At 16yrs old and 120K+ miles I wouldn't be  
> surprised to find a problem in the alternator or regulator but don't want  
> to replace them unless I have some confidence it will fix the problem. I  
> don't notice the noise in the car radio and the charging system is working  
> fine otherwise. Any ideas will be greatly appreciated.
> 
> 73....   Mark   KG7JL


The reason you don't notice it in the receiver is that the Motorola has a 
10 V (Ithink) regulated supply. All the noise spikes are clipped off in 
the pwer regulator, but the transmitter gets 12 V and the noise is still 
there. 

I'd start with disassembling your alternator, making sure the slip rings 
are clean and the brushes are making good contact. I'd also try a .5 mfd 
coaxial capacitor at the output terminal (connect the case of the 
capacitor to ground, the output lead from the alternator goes to one of 
the terminals on the capacitor, and the lead to the rest of the 
electrical system goes to the other terminal). 

Noise in an alternator can certainly be present even though it appears to 
be charging the batteru just fine.


Robert Smits  VE7EMD Ladysmith B.C. 
Ph (604) 245-2553 e-mail: emd@ham.almanac.bc.ca 
PACKET VE7EMD@VE7KIT.#VANC.BC.CAN.NA                             

                                         
Newsgroups: rec.radio.amateur.misc
From: stocker@nssdca.gsfc.nasa.gov (ERICH FRANZ STOCKER)
Subject: RE: Morse code upgrading
News-Software: VAX/VMS VNEWS 1.41    
Organization: NASA - Goddard Space Flight Center
Date: Fri, 18 Dec 1992 11:05:00 GMT

In article <9212171212.aa01080@ingate.microsoft.COM>, a-kevinp
@microsoft.COM (Kevin Purcell, Rho) writes...

> [stuff removed that I'm not commenting on]

>The bottom line from my research is that:                    > 
>1. Almost anyone can learn the code -- but some people take longer than 
>others. Intelligence, musical ability, age and almost any other factor 
>have no effect on your ability to learn the code.
> 

Given the obvious research you've done on this, I'll generally defer to
your broader knowledge on this subject.  However, I have tried on several
occasions to learn morse code and have never been very successful at least
not successful enough to pass a morse code exam to get a license. 

I am also "rhythmically deficient".  I have to struggle to come to grips
with rhythm when I play an instrument.  Morse is definitely a rhythmic
language.  It appears intuitive to me that people that have difficulty
with rhythm in music will have problems learning the code.

To complicate this I have a pretty good memory so learning code from
cassettes is almost impossible since I memorize the meanings but haven't
really learned the code. This shows up when I try to copy text not part
of the cassette.

To show you have far this problem goes back, my radio theory is very heavy
on tubes, extremely light on transitors, and almost non-existent in ICs. My
last ARRL Radio Handbook was 1965.  
>[stuff removed that I'm not commenting on] 
>73 de Kevin Purcell N7WIM/G8UDP (Seattle, WA)          a-kevinp@microsoft.com
>Do your interests match mine? If so call me. I'd like to hear from you.
>QRP, Packet, TCP/IP, Digital voice, Macintosh, Spread Spectrum, Homebrew,
>Satellites, Antenna design, Propagation, VHF/UHF weak signal, Microwave, QEX
> 
Newsgroups: rec.radio.amateur.misc
From: joe@montebello.soest.hawaii.edu (Joe Dellinger)
Subject: Re: Morse code upgrading
Keywords: SuperMorse
Reply-To: joe@montebello.soest.hawaii.edu
Organization: School of Ocean and Earth Science Technology
Date: Wed, 16 Dec 1992 11:13:23 GMT

	Don't forget that for those with Unix boxes there is a program
somewhat akin to supermorse in the directory:

hanauma.stanford.edu: /pub/SuperiorMorse4Unix

	If you write a driver for a new device, or have any comments about
using it, please let me know!

     /\    /\    /\/\/\/\/\/\/\.-.-.-.-.......___________
    /  \  /  \  /Hawaii Institute of Geophysics, Honolulu\/\/\.-.-....__
___/    \/    \/Joe Dellinger, Internet: joe@montebello.soest.hawaii.edu\/\.-.__
____________________________________________________
Objectivity is not an unobtainable emptying of mind |
but a willingness to abandon a set of preferences   |----> Stephen J. Gould
when the world seems to work in a contrary way.     |
From: oo7@ut-emx.uucp (Derek Wills)
Newsgroups: rec.radio.amateur.misc
Subject: military cw
Keywords: surely you jest
Date: 21 Dec 92 03:54:55 GMT
Organization: The University of Texas at Austin, Austin, Texas

berger@atropa (Mike Berger) claims:

>An individual who trained as a radio operator during WW II said that
>they were forbidden to pick up the pencil until 45 seconds of code had
>been sent.  They were forced to "copy behind", writing down what had
>been sent 30-45 seconds prior.  This technique has been recommended
>by various sources over the years as essential for high-speed code
>operation.

I can't believe this is right.   Can you be sure he didn't say it
was "four *to* five seconds" rather than "forty-five seconds"?
45 seconds is a lo-o-o-o-ong time.


Derek Wills (AA5BT, G3NMX)
Department of Astronomy, University of Texas, 
Austin TX 78712.  (512-471-1392)
oo7@astro.as.utexas.edu 
oo7@emx.utexas.edu
Newsgroups: rec.radio.amateur.misc
From: edw@sequent.com (Ed Wright)
Subject: Re: Clever Phonetics Needed--WK3C
Organization: Sequent Computer Systems, Inc.
Date: Mon, 14 Dec 92 23:23:35 GMT

In article <14570557@hpnmdla.sr.hp.com> alanb@hpnmdla.sr.hp.com (Alan Bloom) writes:
>
>And for those spoil-sports who don't like "cute" phonetics:  of course,
>these are not for use on the air.  Except maybe in a ragchew conversation
>after callsigns have already been exchanged.
>

Gee whiz, you mean I shouldn't use

    KsHatriya Auscultating 9 Ailurophiles Hypothesizing Quodlibets

In a Contest ? :-)

Ed (FB) Wright
-- 
 I think I've got the hang of it now .... :w  :q  :wq  :wq! ^d  X exit ^X^C ~.
 ^[x  X Q  :quitbye  CtrlAltDel   ~~q  :~q  logout  save/quit :!QUIT ^[zz ^[ZZ 
 ZZZZ  ^H  ^@  ^L  ^[c $q ^# ^E ^X ^I ^T  ?  help  helpquit ^D  ^d ^C ^c help 
 ^]q  exit ?Quit ?q  anybackbone!sequent!edw edw@sequent.COM  KA9AHQ 28.340
From: alanb@hpnmdla.sr.hp.com (Alan Bloom)
Date: Thu, 17 Dec 1992 20:08:04 GMT
Subject: Re: IRF 511 as RF Power Amp
Organization: Hewlett-Packard, Santa Rosa, CA
Newsgroups: rec.radio.amateur.misc

In rec.radio.amateur.misc, perry@hpfcmgw.FC.HP.COM (Perry Scott) writes:

Re: using power MOSFETs as RF amplifiers:

>>    I'm puzzled by the fact that neither 
>>    DeMaw nor Hayward seems to have run into trouble with these 
>>    transistors' considerable input capacitance -- the 511 has about 
>>    100 pF and the IRF 530 that Hayward used has about 900pF!  

Not to mention the Miller effect (gate-drain capacitance is multiplied
by the stage voltage gain.)

>I've often lusted after the new power MOSFETS too.  I think you'd have
>to build an input circuit to deal with the input capacity you've
>discovered.  

If you drive the FET from a 50-ohm source, the 100 pF device should
work pretty well to about 30 MHz, and the 900 pF device to 3.5 MHz
without too much loss.  The low-resistance source impedance should 
also improve the stability.

AL N1AL

Newsgroups: rec.radio.amateur.misc
From: esrlb@csv.warwick.ac.uk (Mr S Browne)
Newsgroups: rec.radio.amateur.misc
Subject: Re: IRF 511 as RF Power Amp
Date: 14 Dec 1992 10:14:37 -0000
Organization: Computing Services, University of Warwick, UK
NNTP-Posting-Host: clover.csv.warwick.ac.uk

If you do have problems driving the FETs, it might be worth considering an
emitter-follower type driver. In particular, the complimentary em-foll.
pair seems like an effective driver for capacitive loads. It's perhaps
easiest to think in terms of operating the FET as a switch, and driving it
between being fully off and saturated. Due to the large capacitance at the
input you will want a low impedance driver to ensure adequate switching speed,
which is where the follower circuit comes in. Although I have no experience
with the IRF511, I have used this technique with an RF FET at 50 MHz, and it's
worked fine. If you have access to it, Motorola Applications Note AR-141,
found in the RF data book, gives useful info on this idea.
The above of course only applies to non-linear amps., as I'm assuming
you'll be using it for CW.

Good luck,

Simon G0GWA.
Newsgroups: rec.radio.amateur.misc
From: rerickso@cwis.unomaha.edu (Ronald D. Erickson)
Subject: Re: Need help troubleshooting C-Line
Organization: University of Nebraska at Omaha
Distribution: na
Date: Tue, 15 Dec 1992 18:52:07 GMT



It sounds to me like you need to calibrate your recieve
and transmitter oscillators to zero beat.  I do not have
my manuals here or I would tell you how to do it.  

When you tune up your transmitter, you want maximum
power out for the power level you are loading up to. 
Otherwise, heat will be dissipated in the transmitter.
If your RF tune on your receiver is not peaking your
transmitter output, it is no big deal unless you are
down a lot in output power.  The tuning is important
in your pi-network adjustments, however.

73,

Ron
AK0N
Newsgroups: rec.radio.amateur.misc
From: zslf08@trc.amoco.com (Steven L. Farmer)
Subject: Re: DX Etiquette (an oxymoron)
Originator: zslf08@seqstrat
Organization: Amoco Production Company, Tulsa Research
Date: Fri, 11 Dec 1992 19:08:03 GMT


In article <BXTJVB2w164w@ham.almanac.bc.ca>, emd@ham.almanac.bc.ca writes:
[stuff deleted...]
> DX'ers are pests. They are noisy, rude and inconsiderate. (And that's not 
> even mentioning the cheats who use lists).

You simply don't hear the dxers who refrain from boorish behavior.  We are
most assuredly in the majority, and it's a mistake to generalize from the
rudeness of a few to insult all of us.  Our world has an ample supply of
bigotry already.  Please don't add more.

Steve WA5RPF
From: BFXD13@UCVAX.ULSTER.AC.UK (Michael Tullett)
Newsgroups: rec.radio.amateur.misc
Subject: Unsubscribe
Date: 18 Dec 92 08:54:00 GMT
Organization: ucsd usenet gateway
NNTP-Posting-Host: ucsd.edu
Originator: daemon@ucsd.edu

UNSUBSCRIBE
Just over Christmas so that my mailbox does not overflow

Mike  BFXD13@uk.ac.ulster::ucvax  Uni.of Ulster Coleraine
                                  Co.Londonderry N.Ireland
From: domae@snow.nrtc.northrop.com (Terry Domae <tdomae>)
Newsgroups: rec.radio.amateur.misc
Subject: Re: License delays
Date: 18 Dec 92 15:06:21 GMT
Reply-To: domae@snow.nrtc.northrop.com (Terry Domae)
Organization: Northrop Research & Technology Center, Palos Verdes, CA

I talked to the FCC a few days ago, and they said their current backlog
is over 17 weeks.  That's the time from FCC receipt of application to
the time they can mail it out.  So if your VEC takes a few days to process
it you may be up to 18 weeks or so.

I know this is not good news for people waiting for licenses, but I
don't think there is much that really can be done.  Given that 
the FCC priorities are elsewhere like Commercial Broadcast, Intl'
Telecommunications, ... I doubt that things like simple license delays
will get much attention. Things like Cell-Phone Fraud and the like I 
would think have priority.

However, some letters of support for allowing VECs grant temporary licenses
given this situation may get some attention.  The VECs sort of do this
anyway (e.g., /KT /AG /AA /AE) granting temp. license upgrades ... why not
a /KN???  

The only problem I see is that the FCC would have no way of knowing who
a /KN call would be - no data online at the FCC.  So I'm sure the FCC
would want the VECs to submit digital data, or have that data accessible
to the FCC within a certain time period (Maybe like a week).


Terry Domae
| Northrop Research Center	|     Phone/Fax: 310/544-5203 310/377-4271 |
| One Research Park		|      Internet: domae@nrtc.northrop.com   |
| Palos Verdes, CA, 90274-5471	| Amateur Radio: KC6ROI			   |
From: cvm@nauvax.ucc.nau.edu
Newsgroups: rec.radio.amateur.misc
Subject: RE: The Grand Canyon
Date: 16 Dec 92 19:21:36 GMT
Organization: Northern Arizona University

In a previous article, brad@bradf.uucp (Brad Fisher) wrote:

>bowen@acsu.buffalo.edu (Devon E Bowen) writes:
>: I'm planning a trip to the Grand Canyon this January and I was planning
>: on hiking into the canyon for a day (down a not so safe path). I was
>: wondering if anyone knows whether the park police monitor any particular
>: 2 meter frequency in case I run into trouble. Any help is appreciated.
>: 
>: Devon
> 
>The response I've gotten from the rangers there, and while visiting 
>Mesa Verde, in Colorado was somewhat of a sneering "no" ... as though
>I would be infringing on their duties in some way. It really quite 
>surprised me ... the number of rangers actually out on the trail were 
>quite few. Should anyone loose their footing, fall and require assistance,
>they would have to wait while someone hiked out for help.
> 
>I have heard of rumors about a ham repeater being installed on the north
>rim someday ... but I think it may just be that ... rumors.

There are two repeaters on the south rim of the Grand Canyon.  The two meter
machine is 147.32+ and I don't remember the 440 frequency.  Someone posted it a
little while ago.  If you really need it, send me email an I will look it up
for you.  The machines are accessible from a large part of the most popular
trails in the canyon.  I use my HT there whenever I hike the canyon.

The 440 machine is part of a link system (called NorthLink) that connects the
Grand Canyon, Flagstaff, Phoenix, Page (Navajo Mtn.), Yuma and a couple of
other places in Arizona.  You can connect the 2 meter machine to the 440
machine and thus access the link system from 2 meters.  The DTMF code is ##771*
to connect and ##772* to disconnect.  Please id before controlling.  After 3
minutes of inactivity on the 2 meter side it will automatically disconnect.

One of the rangers at the canyon is a ham and monitors the repeaters most of
the time.  His call is WB6JAA and is name is Paul.  Paul has always been
friendly and very helpful.  If you get into trouble he will probably be
listening.  If you can't find someone on the local machine, you shouldn't have
any problems making a contact on the link system.  Also several people from the
Bill Williams Amateur Radio Club in Williams, AZ monitor the these machines.

Please feel free to email me about the Grand Canyon or other Northern Arizona
repeaters.  And to the original poster, Devon Bowen, what trail are you going
down?

--------------------------------------------------------------------------
Chris Michels -- Systems Programmer             cvm@nauvax.ucc.nau.edu
Northern Arizona University -- Flagstaff, AZ    cvm@nauvax.bitnet
Phone: (602) 523-6495                           N7YIU
From: RON@NSULA.EDU (Ron Wright - NSU Computer Center)
Newsgroups: rec.radio.amateur.misc
Subject: Looking for Source Code Example to Sample HAMCOM Type Interface
Date: 14 Dec 92 15:23:13 GMT
Organization: UCSD Usenet Gateway
NNTP-Posting-Host: ucsd.edu
Originator: daemon@ucsd.edu

I would like to to experiment with writing some software that would
utilize the HAMCOM type interface.  I am in search of some example 
source code that will accomplish the sampling from the interface.
I have an understanding of whats going on but have never tried
to sample from the port and count timer ticks. (I think this is how
the HAMCOM and similar software works.)

Any pointers would be appreciated.

Ron - KA5LUG

------------------------------------------------------------------------------
Ron Wright - KA5LUG                Internet:  RON@ALPHA.NSULA.EDU
User Support Specialist           	      KA5LUG@AMSAT.ORG
Northwestern State University     
Natchitoches, LA  71497
(318) 357-5594                     Packet:    KA5LUG@N5HOF.LA.USA.NA
------------------------------------------------------------------------------
Newsgroups: rec.radio.amateur.misc
From: jwl@ferrari.cray.com (Jim Lynch)
Subject: Satellite?
Reply-To: jwl@ferrari.cray.com (Jim Lynch)
Organization: Cray Research, Inc.  Eagan, MN.
Distribution: usa
Date: 15 Dec 92 18:39:37 CST

I was driving down interstate 75 somewhere in southern GA or northern FL
and scanning across the band with my 2 meter mobile unit when I came across
a signal on 145.990.  The stations broadcasting sounded like they were
coming from a repeater, but I suspect that it was a satellite since it
was only around for a few minutes.  There were people on there from 
New Mexico and New York, to name a couple of the distant places.  
The question is? What was I hearing?  What is the input frequency, if this
is a repeater?  I heard it twice once during each leg of the journey.
The first time was Saturday before Thanksgiving and the next time was
the Sunday after.

Thanks,

Jim.
From: jreece@sousa.intel.com (John Reece)
Newsgroups: rec.radio.amateur.misc
Subject: Re: FCC woes, what can be done?
Keywords: FCC
Date: 18 Dec 92 01:03:26 GMT
Reply-To: jreece@sousa.intel.com
Distribution: usa
Organization: Intel - Information Technologies

In article <1992Dec16.220752.27420@wam.umd.edu>, ham@wam.umd.edu (Scott Richard Rosenfeld) writes:

> The answer may be that hams do the licensing as well. 

I don't see why the VEs can't just issue a temporary operating permit 
to new licensees on the spot.  All that is involved is:

  1>  Each VE group gets a unique list of unused callsigns from some 
      power-that-is.

  2>  When a prospective new licensee passes his tests the VEs take 
      the next appropriate callsign from the list and note it on the
      the new licensee's element completion certificate  and on the
      601 sent to the FCC.

  3>  The new licensee can start operating right away.  When the FCC
      gets the 601 they just enter the VE-assigned callsign along with 
      the other stuff.  If it turns out the applicant, say, lied about 
      having a license suspension and has been operating during 
      this time they can send for a posse.

I suppose this has been proposed before.

One week down, N to go.

-- 
John Reece			"This lifeboat is full"	
Not an Intel spokesman
From: dave@eram.esi.COM.AU (Dave Horsfall)
Newsgroups: rec.radio.amateur.misc
Subject: Re: Phonetics needed for N9LEA
Date: 21 Dec 92 02:11:43 GMT
Organization: Pacific ESI, Sydney, AUSTRALIA
X-Disclaimer: "Me, speak for us?"
X-Witty-Saying: "Mobius strip - see other side for instructions"

In article <1gocfnINNfo@spool.mu.edu>,
    jason@studsys.mscs.mu.edu (Jason Hanson) writes:

| And, don't tell me "November Nine Lima Echo Alpha".

OK, I won't.  How about November Figures Niner Lima Echo Alpha?

-- 
Dave Horsfall (VK2KFU)         VK2KFU @ VK2RWI.NSW.AUS.OC
dave@esi.COM.AU                ...munnari!esi.COM.AU!dave
From: brunob@hpldsla.sid.hp.com (Bruno Bienenfeld)
Date: Mon, 7 Dec 1992 16:47:40 GMT
Subject: Re: Voice question: advice requested
Organization: HP Scientific Instruments Division - Palo Alto, CA
Newsgroups: rec.radio.amateur.misc

Excluding the thchnical chalange, you will be better of and make arangments
with MaBell or ATT, since the amount of money you will spend will pay the 
bill for your mom for next 5 yrs at least. 

from the log of AA6AD