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Subject:      Info-Hams Digest V92 #1334
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Subject: Info-Hams Digest V92 #1334
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Info-Hams Digest            Fri, 18 Dec 92       Volume 92 : Issue 1334

Today's Topics:
               About transverters (was Weak signal VHF)
                           Alternator noise
                              DTMF help
                                DXers
                     FCC woes, what can be done?
                            Heathkit Help
                          Help with Cable ID
                      INFO-HAMS is a bogus list?
                    Is the ICOMR1 a good receiver
             Need help w/ARRL HB gel-cell charger problem
           Not quite a ham question -- Kids Walkie-talkies
                      Online Repeater Directory?
                      Teletype type face wanted
                      Worked All States blues...

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: Fri, 18 Dec 1992 17:31:41 GMT
From: deccrl!news.crl.dec.com!dbased.nuo.dec.com!e2big.mko.dec.com!nntpd.lkg.dec
Subject: About transverters (was Weak signal VHF)
To: info-hams@ucsd.edu

tcmaint@pogo.wv.tek.com (TeleCom Maintenance) writes:

>think the 767 would be a good rig to upgrade too. Does anyone familiar
>with operating satelite and VHF/UHF SSB work have any knowledge of these
>rigs?

My understanding of the 767 is that although you can operate split and
perhaps even split across bands which is needed for the satellites, it does
not allow full duplex operation, i.e. you can't listen on one band while
transmitting on another.  Full duplex is almost essential for operating the
satellites as you need to be able to find your down link.  It's possible to
do it with a rig that has full breakin, i.e. listen for your downlink that
is a fraction of a second delayed due to the distance to the bird, but that
is certainly not the most desirable way to operate.  I'f I'm mistaken
about this, will some 767 owner please correct me?

73,
Todd
N9MWB

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

Date: 18 Dec 92 16:05:00 GMT
From: news-mail-gateway@ucsd.edu
Subject: Alternator noise
To: info-hams@ucsd.edu

  I had a problem with alternator noise when I installed a crossover network/
and stereo amplifier in the trunk. It showed up in different ways, though.
The front crossover and amplifier had no noise at all. Just in the rear.
It got louder with the fan, turn signals, brake lights, and rear defroster when
the engine was on. But, when the engine was off ALL the noise went away.
Fan, too. (I can run the heater in my car with the engine off since there is
an electric circulation pump- 'til the block cools)  The big hint though
was when I ran everything in the trunk  (CD juke box, xover, 4*35W amplifier)
off a second battery and I still had the noise. I disconnected the grounds
from the 'trunk node' (electric antenna and rear lights) and let the 'line'
(audio) be the only grounding and that stopped the noise. But I didn't want
to run everything off a battery so what I did was to  Clean the alternator
ground and run all the audio electronics grounds to one ground wire (under the
radio) and that ground wire (8 ga.) to the ground point under the hood where
the battery - and the engine harness are grounded to the chassis. That stopped
all the alternator noise.
Now both ham and audio +V go through the ignition (though the car has no spark
plugs) switch and the grounds go right to the chassis, same spot as the
alternator and battery.
Season greetings de Skip, NT1G                          E&WE 508-872-8291

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

Date: Fri, 18 Dec 1992 13:58:30 GMT
From: netcon!bongo!julian@locus.ucla.edu
Subject: DTMF help
To: info-hams@ucsd.edu

	For those of you that want a cheap and nasty solution to the
DTMF generation problem here is something to try.

	Parts cost is usually between $1 and $5. You need an AT&T
(Western Electric) DTMF pad. These are best salvaged from an old 2500
(Desk) phone. A good source of these phones is garage sales and swap
meets. For true frugality, do not remove the Touch Tone pad from a
good working phone. Find a phone that has been physically damaged by
being dropped from great heights or used for wife beating. The DTMF
pad in such phones is usually intact.

	The How to stuff

	Remove the pad from the phone. Do this with a screwdriver, not
a hammer and a pair of dykes, remember you want to use it again.
Identify the following wires: Blue, Orange/Black, Red/Green.

	Join the Blue and Orange/Black wires together and attach these
to the radio chassis ground. Place a 470 to 680 Ohm (1/4 Watt)
resistor between the Red/Green wire and your + voltage (Between 6 to
12 Volts - a 9 Volt battery is OK). The negative of the power/battery
of course is attached to the Blue & Orange/Black wires. The audio out
is fed from the Red/Green wire. Place a 1uF (Or larger) cap on the
line (+ side on the Red/Green) and the negative side of the cap feeds
to a 1 K Ohm potentiometer.  The wiper arm (center pin) of the pot is
audio out. The other pot pin is attached to chassis ground - yes same
place as the Blue & Orange/Black wires.

	I stole this tip from the 1976 ARRL Radio Amateurs
Handbook. Page 439. Note that DTMF pads made by other manufacturers -
Automatic Electric (GTE), ITT, Northern Telecom and Stromberg Carlson
(Comdial), tend to use different color codes on their wires.

	Now you can use the local autopatch and annoy hundreds of
people because you are too mean to spend 20 cents at a phone booth.

	For real fun, you can call companies with "automated
attendants" and piss away hours navigating through useless menus. This
is guaranteed to give the repeater trustees serious thoughts about
getting rid of the damn patch and telling you to buy a cellular
phone.
--
Julian Macassey at bongo. julian@bongo.tele.com Voice: (213) 653-4495
Paper Mail: 742 1/2 North Hayworth Avenue, Hollywood, California 90046-7142

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

Date: 18 DEC 92 10:15:20
From: deccrl!news.crl.dec.com!dbased.nuo.dec.com!nntpd.lkg.dec.com!ryn.mro4.dec.
Subject: DXers
To: info-hams@ucsd.edu

In article <NDoyVB2w164w@ham.almanac.bc.ca>, emd@ham.almanac.bc.ca writes...
>
>What I dislike most about DX'ers in general, not just the rude and/or
>crude ones, is the effect thay have had on ham radio in general. Instead
>of encouraging people to reach out to each other, to learn about
>different customs, cultures and ways of life, dxing (and its attendant
>cousin, contesting) encourages many of the bad things in ham radio. A
>"win at all costs" attitude often seems to be coupled with a complete
>disinterest in the other ham except as a trophy for the wall. The whole
>Dxing/contesting crowd has infested ham radio with over zealous, overly
>competitive hams who will seemingly stop at nothing to get that little
>pasteboard.

Then follows it up with:
>
>It's exactly this sort of egotistical reaction from DX'ers (who regard
>everything not DX as somehow not worth bothering about) that makes me
>regard DX'ers as pests who are ruining our hobby.
>

While the word "hypocrite" begs to be used, I think what we're really
seeing here is plain blindness: "What I do is ham radio. What you do is
junk."

Why does everyone have to do the same kind of operation?  Rag chewing
has its place, but It's not the only reason for ham radio.  DX'ing has
fueled the development of superior radios.  Contesting is great training
for emergency operation. SSTV, HF packet, DX nets -- everything has a
place in ham radio.  Why rail against the wind?



>>>==>PStJTT

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

Date: 18 Dec 92 17:05:01 GMT
From: news-mail-gateway@ucsd.edu
Subject: FCC woes, what can be done?
To: info-hams@ucsd.edu

Wake up and smell the coffee!!! The FCC can't operate without proper
funding or personnel. Federal agencies (including DoD) have hiring
freezes and aren't replacing people who retire or leave for other
reasons. The appropriations aren't there. Everyone wants less
government, but when the service or services grind to a halt
we want everthing done for nothing. The solution is to get the FCC
licensing funded and staffed by appropriations...or We must lobby for
legislation to permit private organizations and persons to issue
licenses. The ARRL should get involved at least to discuss this
issue with the heads of House and Senate committtees that can
form a compromise solution to to problem.

Many have said that the license recording and issuance is a simple
computer task. I know it's frustrating, but they need new hardware,
software and people to do the entry etc.. Staff and  state of the
art computer systems cost bucks. There is no other way if the FCC
is going to be the sole issuing agency.

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

Date: 18 Dec 92 16:39:38 GMT
From: swrinde!sdd.hp.com!spool.mu.edu!olivea!tymix!drawson@network.UCSD.EDU
Subject: Heathkit Help
To: info-hams@ucsd.edu

> Would the heathkit person post a email address -- nothing of course
> came through the INGO-HAMS gateway.

The posting was from BRITTINGHAM.RICHARD_A@FORUM.VA.GOV.

73, Dick  n6cmj   drawson@tymnet.com   (like that?)

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

Date: Fri, 18 Dec 1992 16:57:42 GMT
From: swrinde!zaphod.mps.ohio-state.edu!uwm.edu!linac!att!cbnewsc!cbfsb!att-out!
Subject: Help with Cable ID
To: info-hams@ucsd.edu



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

Date: 18 Dec 92 17:59:33 GMT
From: news-mail-gateway@ucsd.edu
Subject: INFO-HAMS is a bogus list?
To: info-hams@ucsd.edu

SM7LEK says:

Is this list just a bogus list
made and sent out by someone for his own amusement?

I say, I say, I say:

I think they finally found out.

OK, I'm not really a ham I'm just the alpha version of a new
intelligent agent product from Microsoft. They fed me all the ARRL
technical publications and I just spout out what is needed. You should
have guessed it from the call. The beta should be released in June and
will come preset with the call W7BG. The voice and CW modules will be
released at a later date. The spelling mistakes are all deliberate,
they're just to make me seem more human.

I beleive Al N1AL is a similar construct from Apple (the name is a give
away) running on a Quadra under Pink.

And Gary I beleive is a university research project, he still seems a
little buggy ;-)

IBM is beleived to be working on an SSB operator simulator called
FooBARF for 14313 to run under OS/2 (it is said to be indistingushable
from the real thing) but it'll probably never ship. Their model just
mutters JCL error codes to occupy the frequency (IEHFONPT -- Patch not
legal in this context. Dump follows).

N7WIM -- Now 7 Work In Microsoft
G8UDP -- Grr 8 Unusual Damm Phonetics

Merry christmas, happy hannuka, happy solstice, happy kwanzaa to all
our readers. Beep.

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


Not enough memory to complete this operation. Close some windows and
try again.

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

Date: Fri, 18 Dec 1992 15:55:35 GMT
From: ray@cs.rochester.edu
Subject: Is the ICOMR1 a good receiver
To: info-hams@ucsd.edu

A friend of mine wants to sell me an ICOM R1 general coverage handheld
scanner for 300 dollars.  It covers from 100khz to 1.3ghz with no
interuptions whatsoever.  It is as small as the new pro-43.  It has so
many features that I simply cannot list them here.  A draw back is that
it only has 100 channels but that isn't too bad.
My concern is that because of it huge frequency coverage that it may lack
in the sensitivity and selectivity department.
Does anyone know anything about this scanner and how it performs and compares
to some of the other current handheld scanners on the scene today.

many thanks

ray

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

Date: 18 Dec 92 10:55:22 CST
From: usc!zaphod.mps.ohio-state.edu!moe.ksu.ksu.edu!kuhub.cc.ukans.edu!heacock@n
Subject: Need help w/ARRL HB gel-cell charger problem
To: info-hams@ucsd.edu

I recently built the gel-cell/charger project from the 1991 ARRL
Handbook (from chapter 27), to go with a couple of gel cells I bought
at a hamfest a few months ago.  The cells specified in the project are
6-volt 4Ah units--mine are 6-volt 5Ah units.  My cells were new when I
bought them (as nearly as I can tell), but the measured voltage of
each was less than one volt when I purchased them--I'm not sure if
this figures into the problem I'm having or not.

I built the charger, tested it, found that I couldn't get the output
voltage to the specified value, also blew a fuse.  I rebuilt the thing
(I had installed the wrong value resistor at one point), retested it,
recalibrated it, and got the output voltage exactly right.  I hooked
up the batteries, let it charge for about eight hours, and found that
the cells had only charged to about 2 volts--in fact, while I watched,
the voltage on the cells dropped about .01 v/sec.

I had built the circuit to deliver about 0.7A charging current to the
cells.  I put an ammeter between the cell and the output jack and
found that it was only producing about 0.3 *mA* of current while
charging.  I took it apart, checked the circuit again, found no
errors.  All devices appeared to be operating properly, voltages
appeared to be correct everywhere.

I know next to nothing about gel-cell batteries--can I assume that my
batteries are bad, or is there an error in the circuit design of which
I am unaware?  Is there anyone out there who has built this circuit,
or who has some experience with charging gel-cells who can recommend a
next step for testing or debugging this problem?

Thanks in advance, and 73 de n0nzq
--
+-----------------------------------------------------------------+
| Doug Heacock, Academic Computing   | heacock@kuhub.cc.ukans.edu |
| Services, The University of Kansas | heacock@ukanvax.bitnet     |
| Lawrence, KS 66045                 | Amateur radio: N0NZQ       |
+-----------------------------------------------------------------+

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

Date: 18 Dec 92 08:39:54 GMT
From: naucse!sunset.cse.nau.edu@arizona.edu
Subject: Not quite a ham question -- Kids Walkie-talkies
To: info-hams@ucsd.edu



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

Date: Fri, 18 Dec 1992 18:05:12 GMT
From: beta.lanl.gov!tjf@lanl.gov
Subject: Online Repeater Directory?
To: info-hams@ucsd.edu

Hi...I wondered if there was an internet ftp'able / readable listing
of repeters freq's.  If anyone knows of such, would you please e-mail
or post?  If locals are available, I am particularly interested in
Oakland/Livermore Ca area, Denver/Boulder Co area and Richland/Tri-Cities
Wa area.  Thanks!

-Tom KD5??? (Licence in the mail)

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

Date: 18 Dec 92 16:17:35 GMT
From: usc!zaphod.mps.ohio-state.edu!magnus.acs.ohio-state.edu!usenet.ins.cwru.ed
Subject: Teletype type face wanted
To: info-hams@ucsd.edu

Does anyone know of an available typeface that looks like a Model 15 or 28
Teletype's printing?  Or maybe like a military CW operator's "mill"?
It isn't simply a Courier typeface in all upper case, with slashed zeros.
For one thing, I remember that the Teletype's printing was sans-serif.
But I think it had other characteristics.  Typing on an office typewriter
in all caps looked just like typing in all caps, not like Teletype.

Purpose:  nostalgia.  I'm looking for a type face for PC word processors,
but would settle for Postscript (none of my PCs have Postscript printers).
(Please send me a copy of any followup you post to News before the New
Year, so I don't miss the reply over the holidays.)

73,  Dick Rawson  n6cmj       drawson@tymnet.com

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

Date: 18 Dec 92 17:46:58 GMT
From: news-mail-gateway@ucsd.edu
Subject: Worked All States blues...
To: info-hams@ucsd.edu

Recently, Scott NF3I was lamenting about not being able to put
up antennas for 80 and 40 due to covenants on his property...

Fear not!  How about putting a HF antenna on your car and running
coax into your townhouse window?

I've had very good success using the Hustler mobile HF antenna
setup on 40m CW running only 5 watts with my Ten-Tec Argonaut.
I worked Maine to Massachusetts and got about a 559, for example.
The Hustler antenna setup consists of a five-foot aluminum "mast"
(radiator) to which you add a "resonator" for your band of choice.
(Incidentally, the vertical alone is about 1/4 wave on 6m.)
Yes, you will have do some significant drilling to mount this to
your car, or you could build one of those monster mag-mount things
that was in QST(?) recently.  The 40m resonator has a very narrow
bandwidth, so you'll have to adjust the top whip section if you
move around the band much. This sounds like it would work very
well for your situation, too.  Total cost (swivel mount base, mast,
and resonator) would probably be around $50 to $75.

Of course, you could build a fine "fixed mobile" antenna from scratch:
1/2 inch copper pipe for the vertical section, wind your own coil on a
short piece of PVC, and add some welding rod for the tip section. Mount
it on a piece of plywood that will set on the roof of your car. For the
ground side, run some braid to a large alligator clip to the car body
(rain gutter?). You'd have a temporary antenna that the covenant cops
probably have no grounds to complain about. Total cost of this setup
would probably be about $10.

Finally, a end-fed half-wave worked fine for me running 75m SSB with
my Argonaut to make contacts throughout New England. Of course, living
all around wetlands helped! :-) RF in the shack was a big problem when
I put my Icom 735 running 100 watts into it, though. A good ground
helped that. Maybe a really thin wire end-fed half-wave on 40m, about
65 to 70 feet, would work for you especially if you ran low-power for
less potential TVI/RFI and CW to get the most bang for the low power.

73 and good luck...
Scott WO1G
============
Scott Sminkey
Xyplex, Inc.
330 Codman Hill Rd
Boxborough, MA 01719
email  sasminkey@eng.xyplex.com

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

Date: 18 Dec 92 16:23:16 GMT
From: topaz.bds.com!topaz.bds.com!ron@uunet.uu.net
To: info-hams@ucsd.edu

References <1992Dec16.220752.27420@wam.umd.edu>, <BzFK9r.48t@inews.Intel.COM>, Subject : Re: FCC woes, what can be done?

> Why not establish a computerized data-base that could electronically issue
> the license upon passing the test? Have the VEC enter the data from the exam
> site. Sounds possible to me.

It wouldn't even take that.  All it would take is to allocate some temporary
callsigns on the CSCE's.  For example they could be preprinted with something
like KZ4T001, KZ4T002... and let these serve as temporary permits for 90
days or something.  Yes, you'll have to still stand the suspense to get your
permanent call sign.  The VEC's could set up a database for the temporary
certificates similar to what they do now for Tech Pluses.

_Ron

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

Date: 18 Dec 1992 17:06:39 GMT
From: sdd.hp.com!spool.mu.edu!yale.edu!qt.cs.utexas.edu!cs.utexas.edu!sun-barr!n
To: info-hams@ucsd.edu

References <1992Dec12.024339.4539@wkuvx1.bitnet>, <1992Dec14.214035.9916@panix.c
Subject : Re: Is the ICOMR1 a good receiver

In article <1992Dec18.155535.4211@cs.rochester.edu> ray@cs.rochester.edu (Ray Fr
>A friend of mine wants to sell me an ICOM R1 general coverage handheld
>scanner for 300 dollars.  It covers from 100khz to 1.3ghz with no
>interuptions whatsoever.  It is as small as the new pro-43.  It has so

    It is actually smaller than the PRO43.

>many features that I simply cannot list them here.  A draw back is that
>it only has 100 channels but that isn't too bad.
>My concern is that because of it huge frequency coverage that it may lack
>in the sensitivity and selectivity department.
>Does anyone know anything about this scanner and how it performs and compares
>to some of the other current handheld scanners on the scene today.

   The selectivity is poor.  The sensitivity is high.  This means
   you do get adjacent channel bleedthrough often, which is bad
   for scanning.  However this problem can supposedly be reduced by
   putting a 20 dB attenuator (available with BNC connectors) in line
   with the antenna.  Also, using antennas specific to a given band
   can help.

   The more important issue is that the R1 is truly a receiver, and
   not a scanner.  Scanning is not a one touch operation as it is
   with a PRO43.  If you're really interested in band-scanning, the
   PRO43 is probably a better bet.  However the R1 receives shortwave
   (AM only) up through 1.3 GHz (to 905 MHz guaranteed to spec).  I
   have an R1, but I also have a PRO2006, for home scanning use.  The
   R1 is for mobile use.
--
Robert Allen, rja@sun.com		DISCLAIMER: I said it, not my company.
		    Samuel Addams: Brewer, Patriot.															        "The right to brew b

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

Date: (null)
From: (null)
   Just as a side note - I remember about 20 years ago when it used to be
 pretty common for the 100mw cheap walkie talkies to be on the CB band.
 On Christmas morning, you'd hear some of the most amazing stuff.  It normally
 lasted a couple of days until the batteries ran down :-)

- Bob Wier

  ---------- insert favorite standard disclaimers here ----------
                   College of Engineering
      Northern Arizona University, Flagstaff Arizona
  Internet: rrw@naucse.cse.nau.edu | WB5KXH | fax:602 523 2300

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

Date: (null)
From: (null)
The twin coax used in Wang's 928 Data Link(tm) systems
had a characteristic impedance of 75 ohms.  The two
connectors were BNCs and TNCs.  By the way, Wang has
(or had) a patent on their system.  It was named 928
because the patent was dated September 28 of whatever
year it was obtained.

--
-----------------------------------------------------
Bob Schreibmaier K2PH  | UUCP:     ...!att!mtdcr!k2ph
AT&T Bell Laboratories | Internet: k2ph@mtdcr.att.com
Middletown, N.J. 07748 | ICBM:     40o21'N, 74o8'W

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

End of Info-Hams Digest V92 #1334
******************************
Newsgroups: rec.radio.amateur.misc