Date: Fri, 5 Nov 93 16:31:30 PST
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 V93 #1312
To: Info-Hams
Info-Hams Digest Fri, 5 Nov 93 Volume 93 : Issue 1312
Today's Topics:
"outdoor antenna" ban
Baud vs Bauds
characteristic impedance
JVFAX6.x - which ftp site ?
MorseTrainer for Mac
Plectron - where are they now?
Postal Rates and IRC
Problems routing to ARRL.ORG
qsl to cuba (2 msgs)
Questions about Yaesu FT-411E
Radio Shack HTs
Swan 350 Info wanted
TS440 tnc connections
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: 4 Nov 1993 07:39:11 CST
From: ftpbox!mothost!schbbs!maccvm.corp.mot.com!CSLE87@uunet.uu.net
Subject: "outdoor antenna" ban
To: info-hams@ucsd.edu
It sounds as though you have already found a great defense tactic, that
of being temporary. However, after 29 years of hamming, I would be very
suspicious that there is a deeper reason for the complaint: interference
Take time to check with several of your neighbors to make sure that
you are not wiping out the [cable/master antenna] TV system, stereos,
cordless phones, etc. When you find a problem, the most powerful test
will be that the interference occurs in your presence, NOT operating a
radio transmitter. The location of the antenna, indoors or out on the
balcony, obviously drops out of the equation at this point.
If you do uncover some outside interference source, be a good guy
and work with your neighbors to locate and resolve it. Tis far better
to give up a few hours time, regain your operating priveledges, and
improve the public image of amateur radio than it would be to flame
the complainant and end up losing your lease!
------------------------- Original Article -------------------------
From: jim@sytex.com (Jim Arnold)
Subject: "outdoor antenna" ban
Date: Thu, 4 Nov 1993 05:29:18 GMT
Lines: 22
Anyone have any good ideas on how I can fight a complaint
about my "outdoor antenna"? It's a 2 meter ground plane
that I take in and put out (it's mounted on a wooden stick).
for a couple of hours each evening, and on weekends.
I live in an apartment co-op that doesn't allow antennas.
Well, its just a temporary antenna at that, and no worse
than someone hanging a power cord out their window to
vacuum their car!
Any hints and tips?
Much obliged...
jim - AD4JE
---
jim@sytex.com (Jim Arnold)
Access <=> Internet BBS, a public access internet site
Sytex Communications, Arlington VA, 1-703-528-4380
------------------------------
Date: 5 Nov 93 14:38:14 GMT
From: news-mail-gateway@ucsd.edu
Subject: Baud vs Bauds
To: info-hams@ucsd.edu
Text item: Text_1
>As a friend recently pointed out to me, saying "1200 bauds" is very much
>like saying "1200 Hertzes". Both units have identical singular and
>plural forms -- it's not right to add an "s" to either.
>Stephen Trier KB8PWA
Here's a generic observation. At least half of the discussions, like
this one, that go on and on and on... never need to have started in
the first place if one would just consult the dictionary (and/or the
ARRL Handbook). I previously posted that the dictionary lists baud as
the first choice for the plural of baud and lists bauds as the second
choice. In that respect, it is like the word, fish, where fish is the
first choice for plural with fishes being the second choice.
73 to baud vs bauds, Cecil, kg7bk@indirect.com
(I do not speak for Intel on Internet)
------------------------------
Date: 5 Nov 93 18:32:33 GMT
From: hp-cv!hp-pcd!hpcvsnz!charlier@hplabs.hp.com
Subject: characteristic impedance
To: info-hams@ucsd.edu
Gary Coffman (gary@ke4zv.atl.ga.us) wrote:
: In article <CFzBGt.3oH@hpcvsnz.cv.hp.com> charlier@lsid.hp.com (Charlie Panek) writes:
: >Gary Coffman (gary@ke4zv.atl.ga.us) wrote:
: >: In article <claude.752056704@bauv106> claude@bauv.unibw-muenchen.de (Claude Frantz) writes:
: >: >What is the prefered method to measure the characteristic impedance
: >: >of a coax line ?
: >
: >: If you're measuring at a relatively low frequency, there's another way.
: >: Just terminate the line with a variable carbon resistor, feed a wee bit
: >: of power up the line, and "dip" the SWR reading with the pot. The pot's
: >: value will be the line's characteristic impedance regardless of the
: >: meter impedance.
: >
: > Since Tom Bruhns is away on a trip, I'm going to have to fill his
: >shoes :-)
: >
: > I don't think your 2nd method will work with the typical SWR meter
: >that Joe Ham has. Look at it this way: if I hook a 100 ohm resistor
: >directly on the antenna terminal of my 50 ohm SWR bridge, I will
: >see a 2:1 SWR indication. If I hook a piece of 100 ohm coax to the
: >antenna terminal, with a 100 ohm resistor on the far end, the SWR on the
: >coax will be 1:1, but my 50 ohm swr bridge will still indicate 2:1,
: >because it still "sees" a 100 ohm resistor on its output.
: Yes it will. Now hang a 200 ohm resistor on the end of the cable.
: What SWR does the meter read now? It won't be 2:1, it'll be higher.
: Now when you adjust the resistor for a *dip*, in the reading, and
: then measure the resistor with an ohmmeter, it'll be at the
: characteristic impedance of the line. Try it, it works. Note,
: low frequency, non-inductive pot.
: The reason that it works is that the transmission line is acting
: as a transmission line transformer at any SWR other than 1:1 on
: the line. When the line is "flat", the meter just sees the cable
: impedance of X ohms, but when the line is not flat, it sees the
: transformed impedance of the pot at the meter end of the line.
No, that's exactly the reason your method *won't* work!
: It's possible to get a *peak* instead of a dip at certain line
: lengths and frequencies, but the principle remains the same.
No. The absolute peak in the SWR will occur for a load that
absorbs no power at all, i.e. a purely reactive one. (or zero ohms,
or an open circuit.
Just suppose your piece of 100 ohm coax is exactly 1/4 wave length
long. If you put a 200 ohm resistor on the far end, its impedance
will be transformed to
Z1 = Z0^2/Z2 = 100^2/200 = 50 ohms.
Now the dip is with the pot at 200 ohms. This is similar to
the technique that Alan Bloom refers to.
If the coax is much much less than 1/4 wavelength, the dip will occur
very near 50 ohms, because not much impedance transformation is occurring at
all. This is also true if the line is a multiple of 1/2 wavelength long.
The impedance at the far end corresponding to minimum return loss is
entirely a function of the electrical length of the line.
--
Charlie Panek KX7L Hewlett Packard Company
charlier@lsid.hp.com Lake Stevens Instrument Division
Everett, Washington
------------------------------
Date: Thu, 04 Nov 1993 06:18:01
From: news.cerf.net!pagesat!netsys!agate!howland.reston.ans.net!sol.ctr.columbia.edu!news.kei.com!news.oc.com!utacfd.uta.edu!rwsys!ocitor!FredGate@network.ucsd.edu
Subject: JVFAX6.x - which ftp site ?
To: info-hams@ucsd.edu
> Recently I saw a post on JVFAX6.0. Today I queried
> archie for the program
> with no results. Anybody out there who knows where I
> can find it ?
IP net = 140.98.2.1, anonymous ftp access @ ftp.fidonet.org
lee - wa5eha
wa5eha@delphi.com
* Origin: Com Port 1 DFW Amateur Radio BBS (214) 226-1181 (1:124/7009)
------------------------------
Date: 3 Nov 1993 13:27:48 -0600
From: swrinde!dptspd!TAMUTS.TAMU.EDU!news.utdallas.edu!corpgate!crchh327.bnr.ca!kharker@network.ucsd.edu
Subject: MorseTrainer for Mac
To: info-hams@ucsd.edu
In article <CFx6Ix.3yt@cbnewsm.cb.att.com>, hellman@cbnewsm.cb.att.com (eric.s.hellman) writes:
|> I have not been able to run any MorseTrainer pgms. I'm a DOS person
|> so perhaps I need a little guidence doing this for a Mac. I got the
|> file by ftp, removed the header and binHexed the .Hqx file. That leaves
|> a .sit file but neither stuffit or compactPro recognize the file.
|> Any experienced users? reply to:
|> dara@physics.att.com Shel
You may have an older version of Stuffit than the one that was used to
compress the copy of Morse Trainer you have. If you can find the latest
version of Stuffit Expander, it should decompress it for you. Stuffit Expander
is a very useful freeware utility, as it can decompress both .sit and .cpt
archives, and it support drag-and-drop.
--
======================================================================
Kenneth E. Harker BNR "Any opinions expressed
kharker@bnr.ca Richardson, Texas, USA are solely mine and do
N1PVB (214) 684-5115 not represent BNR"
======================================================================
------------------------------
Date: 5 Nov 93 19:47:22 GMT
From: ogicse!uwm.edu!linac!att!cbnewse!parnass@network.ucsd.edu
Subject: Plectron - where are they now?
To: info-hams@ucsd.edu
I have a few dozen Plectron brand FM monitor receivers but
haven't bought anything from Plectron in 10 years.
The Plectron company has been passed around more times
than a bottle of cheap whiskey, and I've lost track of them.
Anyone know the current phone number or address of Plectron
or the company who now owns them?
They used to be located in Overton, Nebraska, but there's
no telephone listing for Plectron there anymore.
Thanks.
--
==============================================================================
Copyright 1993, Bob Parnass, AJ9S
AT&T Bell Laboratories - parnass@ih4gp.att.com - (708)979-5414
------------------------------
Date: 5 Nov 93 13:59:01 GMT
From: news-mail-gateway@ucsd.edu
Subject: Postal Rates and IRC
To: info-hams@ucsd.edu
Here is the promised table. However, the table form that I
first envisioned was not adequate and I hope the information
presented is useful. The format is as follows; the first
column is the destination, the second is the cost for the
first unit of postage and the third is for the second unit
of postage.
Here are some useful conversions:
1 oz = 30g
1/2 oz about 5 QSL cards (my QSL cards other my vary)
Finland
Destination 20g 50g
Finland: 2.00 mk 2.30 mk
Nordic&Baltic ctrys: 2.30 mk 2.70 mk
Europe: 2.90 mk 4.20 mk
Outside Eu: 3.40 mk 6.30 mk
1 IRC -> 3.4 mk
France
Destination ??g ??g
Outside Eu 4.3 Frc
1 IRC -> ???
Germany
Destination 5g 5g
Europe 1.00 DM
outside Europe 3.00 DM 1.00 DM
1 IRC -> ???
Israeli
Destination 1oz ??g
Outside Israel 1.7 Shekels
1 IRC -> 1.7 Shekels
Italy
Destination 20g ??g
Eu
NA L 1250
VK/ZL/Oc more
1 IRC -> L 850
Japan
Destination 10g 10g
Asia 80 60
Oc,ME Asia, NA, CA 100 70
Eu, Af, SA 120 100
Switzerland
Destination 20g ??g
non EU 1.80 Swiss Frs
1 IRC -> ???
United States
Destination 1/2oz 1/2oz
Outside UA $0.50 $0.45
1 IRC -> $0.50
I would like to thank everyone for there information and if
there are any correction or additions please send them to
me at
skitch@nadc.navy.mil
------------------------------
Date: 5 Nov 93 03:02:28 GMT
From: ogicse!emory!dragon!nj8j!ben@network.ucsd.edu
Subject: Problems routing to ARRL.ORG
To: info-hams@ucsd.edu
landisj@drager.com (Joe Landis - Systems/Network Mgr. - x2621) writes:
> Hi,
> For some reason, every time I try to mail to anyone at arrl.org, my mail gets
> bounced by our forwarder (uu.psi.com). I don't have problems with anyone
> else on internet that I've sent mail. Is there something weird about the way
> arrl.org is set up? I think I've noticed some posts about this a while back.
The problem is that there exists a UUCP map entry for arrlhq which
equates arrlhq with arrl.org, and indicates that it is linked to a psi
machine(uupsi, I think). It looks like the map entry was made by the map
coordinator for CT. The problem is that the name arrlhq is evidently not
known at psi. If your mail passes through a mail forwarder which converts
the mail address to a bang-path, it ends up as ...!uupsi!arrlhq!<username>
(e.g. ...!uupsi!arrlhq!lhurder). This directs it to the psi machine,
which bounces the mail because it doesn't know about arrlhq. Evidently,
arrlhq is the machine name that was used back when ARRL was getting its
feed from a local university.
The quick fix would be to get psi to recognize arrlhq as an alias to
arrl.com. My understanding, though, is that Luck would like the arrlhq
moniker to go away entirely. The arrlhq UUCP map entry needs to be
nuked, but the problem will probably persist for a month or two after
this is done, due to the time it takes map changes to get moved around
the net and/or when and how various machines use the changes to update
their own routing. I'd suggest getting the entry nuked, having PSI use
arrlhq as an alias for arrl.org for a few months to let the mail get
through while the map change percolates through the net, and then
finally dropping the arrlhq machine name entirely.
I did call Luck a while back about this, but I don't think I was near as
lucid as I have been above. He did pretty much tell me, though, that he
could use a hand with this. Is there a UUCP guru in the Hartford area
that could give Luck a hand with this?
Ben
+---------------------------------------+---------------------------------+
| Ben Coleman NJ8J | "All that is not eternal is |
| AX.25: NJ8J@W4QO.#EAL.#ATL.GA.USA.NA | eternally out of date." |
| Internet: ben@nj8j.atl.ga.us | C. S. Lewis |
+-------------------------------------------------------------------------+
------------------------------
Date: Wed, 3 Nov 1993 20:42:02 GMT
From: spsgate!mogate!newsgate!hofbrau.sps.mot.com!a229aa@uunet.uu.net
Subject: qsl to cuba
To: info-hams@ucsd.edu
I know this was discussed some time ago, but, does arrl outgoing buro
handle cuba? Does cuba have an incoming buro? Is there a manager?
Do we have to go direct?
* Chris Terwilliger, AA7WD a229aa@email.sps.mot.com *
* Motorola "And now, *
* Phoenix Corporate Research Labs the sequence of events, *
* 2100 E. Elliot Rd. EL508 in no particular order." *
* Tempe, AZ 85284 - Dan Rather *
------------------------------
Date: Wed, 3 Nov 1993 20:43:06 GMT
From: spsgate!mogate!newsgate!hofbrau.sps.mot.com!a229aa@uunet.uu.net
Subject: qsl to cuba
To: info-hams@ucsd.edu
I know this was discussed some time ago, but, does arrl outgoing buro
handle cuba? Does cuba have an incoming buro? Is there a manager?
Do we have to go direct?
* Chris Terwilliger, AA7WD a229aa@email.sps.mot.com *
* Motorola "And now, *
* Phoenix Corporate Research Labs the sequence of events, *
* 2100 E. Elliot Rd. EL508 in no particular order." *
* Tempe, AZ 85284 - Dan Rather *
------------------------------
Date: Wed, 3 Nov 1993 19:31:19 GMT
From: rd1.InterLan.COM!rm1.interlan.com!tavernin@uunet.uu.net
Subject: Questions about Yaesu FT-411E
To: info-hams@ucsd.edu
I have a couple of questions about the Yaesu FT-411E and would appreciate
any help ...
1. What's the best way to hook up the unit at home so that I don't use
a battery pack?
2. What's the difference between the FT-411 and the FT-411E?
Thanks,
Victor Tavernini
Racal-Datacom, Inc.
tavernin@sun1.interlan.com
------------------------------
Date: 5 Nov 93 02:52:06 GMT
From: ogicse!emory!dragon!nj8j!ben@network.ucsd.edu
Subject: Radio Shack HTs
To: info-hams@ucsd.edu
drenze@icaen.uiowa.edu (Douglas J Renze) writes:
> levine@mc.com (Bob Levine) writes:
>
> >Actually most HT's these days include all that standard. Why spend $250 for
> >a 2m mono band RS HT and then another $250 (?) for a monband 440 RS HT when
> >for way less that $500 you can get quality dual banders? My FT530 has no
> >optional extras and the total price was $429. All of those features you
> >mention plus a hell of a lot more are included.
>
> Problem is, all the dual-banders/expanded coverage HT's I've run across
> seem to have nasty intermod probs. I haven't had any regrets about buying th
> '202. Now, if somebody would come out with a narrow bandpass filter kit to
> replace the tight front-end that these HTs *should* have, then I might agree
> with what you've got to say about buying a dual-bander...
I'll agree. I recently picked up an FT530, and while I'm fairly pleased
with it, I DO get a certain amount of intermod on the 2M side while using
it mobile(with an outside antenna) while tooling around I-285 here in
Atlanta. If RS had had a dual-bander HT built like the HTX-202, they
would have gotten my business right off(is anyone at RS listening?).
Ben
+---------------------------------------+---------------------------------+
| Ben Coleman NJ8J | "All that is not eternal is |
| AX.25: NJ8J@W4QO.#EAL.#ATL.GA.USA.NA | eternally out of date." |
| Internet: ben@nj8j.atl.ga.us | C. S. Lewis |
+-------------------------------------------------------------------------+
------------------------------
Date: 5 Nov 93 14:16:10 GMT
From: news-mail-gateway@ucsd.edu
Subject: Swan 350 Info wanted
To: info-hams@ucsd.edu
I have used this rig many years ago. It uses sweep power tubes (I
think they were 6KD6's) and it's a good tube type, ham band only
ssb or cw rig for its day. I wouldn't run more than 75 watts or so
key done continuous for RTTY to keep from destroying the sweep output
tubes. The antenna transfer circuit used a relay. Like many rigs of
that day, the relay transfer switching times are not fast enough for
either AMTOR or Packet. So, before I'd buy one for the specific use
of HF Packet, I'd check with someone who has done this successfullly
with this rig or anyone out there who knows about how to improve the
speed of the transmit/receive transfer relay for Packet and Amtor modes.
KC2WE S. Taylor
------------------------------
Date: 5 Nov 93 14:51:29 GMT
From: ogicse!uwm.edu!linac!att!cbnewsm!hellman@network.ucsd.edu
Subject: TS440 tnc connections
To: info-hams@ucsd.edu
Here is the way I conneccted my KAM (also valild for PK 232) to my
Kenwood TS 440 ACCY2 jack ( I do not know if the TS 450 is the same):
13 pin connector
pin 3 RCV Audio (to tnc)
pin 4,8,12 gnd
pin11 Transmit Audio (from tnc)
pin 13 1n914 diode to pin 9
(diode points to pin 9)
pin 9 tnc PTT line (and diode)
This will disable the mike during data transmission and allow normal
use of the mike for ssb. This information was supplied by Kantronics.
73 Shel WA2UBK dara@physics.att.com
------------------------------
Date: 4 Nov 1993 07:00 EDT
From: nntp.ucsb.edu!library.ucla.edu!europa.eng.gtefsd.com!paladin.american.edu!afterlife!cs.umd.edu!skates.gsfc.nasa.gov!nssdca.gsfc.nasa.gov!stocker@network.ucsd.edu
To: info-hams@ucsd.edu
References <2507@arrl.org>, <FAUNT.93Oct26092331@netcom6.Netcom.COM>, <159661@netnews.upenn.edu>can
Subject : Re: Was 'Vanity' Call Signs, now paying for call signs
In article <159661@netnews.upenn.edu>, yee@mipg.upenn.edu (Conway Yee) writes...
>>The only valid objection to paying for licensing services from the FCC
>>that I've heard is that young people will be discouraged by one more
>>financial barrier to getting and keeping a license.
>
>I disagree that this is a valid objection.
[stuff deleted]
>
>higher fees self serving? I am sure that most children who become hams
>have parents (generally fathers) who are hams; they are not paying the fees
>themselves. Furthermore, if the child can not afford the few dollars (someone
>in this newsgroup quoted $15), what makes ANYONE think he can afford to purchase
>a radio to get on the air? Even the cheapest homebrew QRP rig costs more
>than that. (Assuming that the kid does not have a well stocked junk box at
>home. Those that do probably have a ham for a parent.)
>
>--
>411 Blockley Hall | Conway Yee, N2JWQ
>418 Service Drive | yee@mipg.upenn.edu
>Philadelphia, PA 19104 |
>(215) 662-6780 | "Specialization is for insects." -- Lazarus Long
Also given the billions of dollars that kids spend each year on all manner of
things, this argument is absurd. To say that kids would not be able to
afford a cost roughly equivalent to the cost of a CD makes me laugh. Go to
Tower records sometime and look at the buying public for these kids (of all
ages) walking out with 2 or 3 CDs is a normal occurence.
Erich
N3OXM
------------------------------
Date: 3 Nov 1993 20:03:26 GMT
From: news.graphics.cornell.edu!newsstand.cit.cornell.edu!newsstand.cit.cornell.edu!usenet@tcgould.tn.cornell.edu
To: info-hams@ucsd.edu
References <msattlerCFwMLx.9sD@netcom.com>, <seeler.54.752343653@UPEI.CA>, <2b8ous$l47@oak.oakland.edu>edu
Subject : Re: We've lost him, Jim!
In article <2b8dvg$7j6@oak.oakland.edu> prvalko,
prvalko@vela.acs.oakland.edu writes:
>I thing one of the TOP TEN "big ham radio lies" is that you can work an
>orbiting object with an HT. OSCAR 21 is supposedly one such satelite
>and from my experience you need several dozen watts and a yagi which can
>be pointed at the "bird" as it fly overhead.
Well...yes and no. I've tried to work AO21 with the mobile and the HT and
not had any luck, and did work it with the big rig at home (100W, 14dbd)
But I think that is more a function of who you are competing with than
the capabilities of the satellite. There have been a number of well
publicised instances of people working AO21 and either MIR or
the Shuttle with HT's or mobiles. I hear mobiles on AO21 with
fair regularity (though I think some are using beams while parked).
If you listen to the low orbit satellites and manned equipment, all of
them are running HT level power (well, I think MIR can crank out 25w if
they want to with the new gear, but I doubt they do) and simple whips or
in the case of the shuttle, even worse antennas - and we hear them just
fine. I mean they are LOS and in some cases only a couple of hundred
miles away. If you can hear them running a couple of watts to a whip,
then they should be able to hear you *IF* you aren't down in the noise
compared to a couple of big guns capturing the receiver. The fact that
it is occasionally done seems to say that the satellite is capable of
doing it, if only it isn't swamped by a bigger signal. Maybe we need
QRP days on AO21. It must be in the realm of regular doings as the
proposed IRIDIUM leo satellite system is supposed to work with
handheld radios of not much more capability than current HT's.
If you want point and shoot satisfaction, go for the 100watt amp
and the yagi or helix. If you are willing to do a little stalking and
wait for a quiet time and the right antenna orientation and pass
geometry - you might keep trying with the ht. I'm doing both.
73 de Kevin, WB2EMS
------------------------------
End of Info-Hams Digest V93 #1312
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