HDTenEightyP/NetNews huggingface dataset:
From: tewheele@iastate.edu (Todd E Wheeler)
Subject: Re: ICOM P2AT keyboard mods
Keywords: ICOM, P2AT, HT
Organization: Iowa State University, Ames IA
Distribution: usa
Date: Thu, 10 Sep 1992 16:44:23 GMT

In <1992Sep10.124554.28299@afit.af.mil> dmeer@afit.af.mil (David E. Meer) writes:


>There was a recent posting requesting mods to the ICOM P2AT.  I received
>the following info from ICOM Customer Service and they work fine on
>my P2AT:


>To enable wideband receive and direct keyboard entry of the entire
>frequency:

>	with the HT off, hold down "Light" "B" and "#" keys and
>	turn the HT on

>	Get into the set mode and you will have a new option 
>	labeled "PL".  Turn the upper right knob to change this to
>	a value of 100.  (The rep at ICOM said "PL" stands for "decimal
>	placement")


>	Get out of set mode 


>You should now be able to enter VFO mode and just press seven digit keys
>to enter any freq directly.  I don't have mine with me now, but I think
>you can enter any freq from 0 to 1GHz.

>I have two questions after making this mod:

>	1.  If I enter a very low freq or a very high freq, a "u" 
>	appears on the LCD.  What is this indicating?  Unable or
>	Unsupported, maybe?

>	2.  There is now a third value option in set mode for setting
>	the push-to-talk lock.  The new value is "ba" or "ha", (the
>	radio isn't in front of me).  What does this new value do or
>	indicate?



>Thanks.

>Dave Meer, N6KEF



A "U" on the display means that the PLL is unlocked.  Thus, you cannot
transmit or receive on the set frequency.  

There is often no real pattern of where the PLL will be locked or not, at
least from my experience with my 2SAT.

Good luck,
Todd N0NUM
tewheele@iastate.edu





Newsgroups: rec.radio.amateur.misc,rec.radio.amateur.packet
From: paulf@umunhum.stanford.edu (Paul Flaherty)
Subject: Re: Piccolo and Clover
Keywords: what they are
Organization: The Three Packeteers
Date: Tue, 8 Sep 1992 17:12:21 GMT

In article <1992Sep4.133641.12681@ke4zv.uucp> gary@ke4zv.UUCP (Gary Coffman) writes:
>That, of course, is the problem with any amplitude modulated signal. The
>trick, as always, is to arrange for the symbol times to be different from the
>characteristic fading times of the channel. If the symbol time is dramatically
>longer or shorter than the characteristic fading time, then distinguishing
>real symbols from channel conditions is possible.

Yes, that's how CLOVER handles fades; a symbol rate of 200 bauds or less will
be immune to 90% of all fades (Wiesner).  

>I shouldn't be telling you how to suck eggs, you're the expert here,
>but I'd think that the kinds of post processing used on weak space
>signals should also work with Clover or any other modem modulation 
>scheme.

CLOVER uses a Reed  - Solomon Error Correcting Code; I'm not sure which
code or how much redundancy is built in, but with RS, you can get one heck of
a lot of coding gain for a very small percentage of overhead.

There was a blurbish article in _CQ_ a few months ago about CLOVER; it would
be a Good Thing if the folks involved would publish more details.

--
-=Paul Flaherty, N9FZX/5W1JX  | "What a difference an hour can make."
->paulf@Stanford.EDU          |		-- Vernor Vinge
From: DERRY@ROSEVC.Rose-Hulman.EDU
Newsgroups: rec.radio.amateur.misc
Subject: batteries on concrete
Date: 8 Sep 1992 07:14:34 -0700
Organization: UCSD Usenet Gateway
NNTP-Posting-Host: ucsd.edu


I cant' believe in this day and age one is called on to debunk this
rediculous myth about placing Pb-H2SO4 batteries on concrete.

First:  A friend of mine was threatened with firing by hos boss who
owned a gas station because he put a battery on the concrete floor.
But...this was back in the fifties when bosses were all alike.

Recently I had a battery sitting on my concrete driveway powering my little
camper.  I came home one day to find my neighbor had brought me a small
piece of wood to set it on.  He ran up to me as I got out of my car and
frantically explained that the battery was certain to be doomed due to
my setting it on the concrete.  

It had been that way for a week and had showed NO SIGN of discharge.

Before I got a power supply for my 100-W hf rig, I used a deep cycle
marine/RV battery to power my station.  I was very active at the time
logging over 100 contacts a week (had just upgraded to advanced).  The 
battery sat on my basement floor which is...you guessed it..CONCRETE!

I usually recharged the battery every two or three weeks.

Finally... No one has ever been able to explain why setting a battery on
concrete is a special situation.  Those who believe in these wild
OLD WIVES' TALES should come up with some reason using existing laws
of physics.

I hope this hasn't offended anyone.

tnx es 73 de Jack, K9CUN
Newsgroups: rec.radio.amateur.misc
From: bleher@mikro.ee.tu-berlin.de (Rolf Bleher)
Subject: Need Tektronix 453 scope HV-transformer
Organization: ZRZ/TU-Berlin
Date: Tue, 15 Sep 1992 12:08:37 GMT


Hello

I'm looking for the high voltage transformer or the HV power
supply of the Tektronix 453 scope. Mine has a short in the
secondary winding.
The Tektronix service told me they can not deliver it anymore.

If you have an old part that you don't need anymore it would be 
nice to give me a note via E-mail.

Rolf
____________________________________________________________________________
  Rolf Bleher                      DK7IN  |  
    E-Mail: bleher@mikro.ee.tu-berlin.de  |  Institute of Microelectronics
    Phone:  +49 30 314-26705              |  Technical University Berlin
    Fax:    +49 30 314-24597              |  Jebensstrasse 1
    AX25:   dk7in @ db0gr.DEU.EU          |  D-1000 Berlin 12, Germany
From: morris@grian.cps.altadena.ca.us (Mike Morris)
Newsgroups: rec.radio.amateur.misc
Subject: Kenwood 731 duo-bander PL decoder needed
Keywords: PL decoder needed help
Date: 15 Sep 92 06:06:27 GMT
Distribution: usa
Organization: College Park Software, Altadena, CA

Does anybody have the manual for a Kenwood duobander (2m/440)?
I need the model number for the PL decoder option (need the decoder too -
but that I can purchase once I know what to order...).

Also what is the value for the in-line fuse?

I may not see your post, so please email also.

Thanks in advance.
-- 
Mike Morris   WA6ILQ   | This space intentionally left blank.
PO Box 1130            | 
Arcadia, CA. 91077     | All opinions must be my own since nobody pays
818-447-7052 evenings  | me enough to be their mouthpiece...
From: pierson@empror.enet.dec.com (dave pierson)
Newsgroups: rec.radio.amateur.misc
Subject: Re: more about ham legends
Date: 9 Sep 92 01:46:51 GMT
Organization: Digital Equipment Corporation


	About the batteries.  I tend to agree with the "its nonsense" school,
	except that sometimes, there's a grain of truth.  One (tho incapable of
	draining a battery in 36 hours...) goes thusly:
		The concrete floor is COOLER than the air.  Thus the bottom of
		the battery is COOLER.  The voltage of a battery depends on the
		TEMPERATURE.  This means (maybe) a difference in voltage between
		the top and bottom of each cell.  Leading to circulating
		currents.  And discharge.

	The wood rack prevents this by thermal insulation.  Likewise, an auto
	battery stays fairly isothermal.

	Is this valid?  I dunno.  Sometime, I am gonna get me a couple of
	good batteries and try it, tho....

thanks
dave pierson			|the facts, as accurately as i can manage,
Digital Equipment Corporation	|the opinions, my own.
146 Main St			|I am the NRA.
Maynard, Mass	
01754				pierson@majsty.enet.dec.com
"He has read everything, and, to his credit, written nothing."  A J Raffles
From: bcoleman@hayes.com (Bill Coleman)
Newsgroups: rec.radio.amateur.misc
Subject: Re: batteries on concrete
Date: 9 Sep 92 17:40:06 EDT
Organization: Hayes Microcomputer Products, Norcross, GA

In article <01GOJBXD451S9I44NI@ROSEVC.Rose-Hulman.Edu>, DERRY@ROSEVC.Rose-Hulman.EDU writes:
> I cant' believe in this day and age one is called on to debunk this
> rediculous myth about placing Pb-H2SO4 batteries on concrete.

Ditto.

> Finally... No one has ever been able to explain why setting a battery on
> concrete is a special situation.  Those who believe in these wild
> OLD WIVES' TALES should come up with some reason using existing laws
> of physics.

Jack,

I have a 88 AH battery powering my radio shack at home. I have it sitting
on a piece of wood on a vinyl-covered concrete floor.

I think this batter-on-concrete-bad myth can be explained largely by the
heat conductivity of concrete. If you set a battery directly on concrete,
it will tend to chill the battery to a colder temperature than on top of
a heat-insulating material such as wood. Which explains why my installation
is sitting on a piece of wood. (It also makes it easier to slide the
battery for inspection)

Cold batteries don't produce as much energy as warm ones. So I use a piece
of wood -- can't hurt.

-- 
Bill Coleman, AA4LR                ! CIS: 76067,2327    AppleLink: D1958
Principal Software Engineer        ! Packet Radio: AA4LR @ W4QO
Hayes Microcomputer Products, Inc. ! UUCP: uunet!hayes!bcoleman
POB 105203 Atlanta, GA 30348 USA   ! Internet: bcoleman%hayes@uunet.uu.net
Disclaimer: "My employer doesn't pay me to have opinions."
Quote: "The same light shines on vineyards that makes deserts." -Steve Hackett.

Newsgroups: rec.radio.amateur.misc
From: 5rtrtrt@cbnewsf.cb.att.com (richard.e.stealey)
Newsgroups: rec.radio.amateur.misc
Subject: Re: RG 8 atten @ 20 Mhz?
Date: 9 Sep 92 21:49:47 GMT
Organization: AT&T

> >>Another perspective, however, is to realize that -3dB is equal to
> >>a power ratio of 1:2. In other words, 1/2 of the power that you
> >>supply to the line is dissipated in the line as heat. So, 100W in,
> >>50W heat, and 50W to the antenna.   de N6MZ
> >
> >But the other ham will only notice that your loss of that power looks
> >like a half S unit in his reciever.  Probably not worth worrying
> >about that much.  

This is a common misconception.  On a quiet band, with no QRM and strong 
signals way above the noise level it may be true.  However, in a pileup
that 3 db will make one heck of a big difference in differentiating your
signal from the other ones.  In fact MANY DXers spend megabucks to get
one db more out of their system for just that reason.

73

Rick   KT2Q
From: gary@ke4zv.uucp (Gary Coffman)
Newsgroups: rec.radio.amateur.misc
Subject: Re: more about ham legends
Date: 7 Sep 92 11:39:02 GMT
Reply-To: gary@ke4zv.UUCP (Gary Coffman)
Organization: Gannett Technologies Group

In article <i672588@pro-haven.cts.com> phantom@pro-haven.cts.com (Tiffany Keller) writes:
>        I used to work for a security alarms company (we installed them...)
>and we used lead-acid batteries (such as car batteries...).  The owners and
>managers have been installing these systems for about 10 years and I was
>told Emphatically *NOT* to set these batteries on the sidewalk while
>unloading the truck.....I asked why and they told me that the concrete is
>an *excellent* earth ground and drains the battery in a hurry.....I didn't
>pay much attention to this....Until I left a charged battery at a site for
>a day or so, came back and it was mostly discharged (couldn't even power
>the system.....They don't lose their charge *that* fast normally.....)

Concrete is not a good earth ground, whatever that means in this 
context. That's why we have to run *separate* strap grounds to tower
bases set in concrete. Concrete is not a good conductor, but even if 
it were, that shouldn't matter unless you sit the battery on it terminal 
side down. The *case* of the battery is supposed to be a good insulator.

The only problems with sitting batteries on concrete floors is the jar
they receive when you drop them on the hard surface, and the chilling
of the electrolyte that a cold concrete floor can cause. This reduces
battery capacity.

Gary KE4ZV
From: Mickey_Baker@FDC100.CEO.DG.COM
Newsgroups: rec.radio.amateur.misc
Subject: CEO AM reply to: Info-Hams Digest V92 #956
Date: 14 Sep 1992 13:10:35 -0700
Organization: UCSD Usenet Gateway
NNTP-Posting-Host: ucsd.edu

Mickey Baker is no longer with Data General. Please refer any 
correspondence or questions to Randy Giordano at (305) 486-2000.
Thanks
Newsgroups: rec.radio.amateur.misc
Subject: Re: *146.52 WB1GOF signs in Massachusetts (long, but good!)
From: julian@bongo.UUCP (Julian Macassey)
Date: 6 Sep 92 15:27:53 GMT
Reply-To: julian@bongo.info.com (Julian Macassey)
Organization: The Hole in the Wall  Hollywood California U.S.A.

In article <7900@public.BTR.COM> grady@btr.BTR.COM (Grady Ward  grady@btr.com) writes:
>It sure is easy to have mixed feelings about the * 146.52 service;
	Really good stuff heartlessly expunged.

>
>Amateur frequencies help in communications emergencies, _not_
>for emergency communications.  

	Even better stuff nuked.
>
>Vigilantism on amateur bands, even with the greatest intentions, doesn't
>seem to me to be at the core of Amateur radio.

	I have been reading this 146.52 stuff for the past few days and
quietly saying to myself: "Geez Macassey, looks like this "Emergency
Frequency" stuff might cath on." Amateurs who prattle on about
"Emergency Service" actually having a place to do it. A place where a
response is assured. I was impressed.

	What the amateur service lacks is an emergency freq. As I have
pointed out many times, if I drive into the back of a truck, there is
no frequency I can use to call for help. Unless of course I am using CB,
Marine or Aviation freqs. Yes, all these other services have an
emergency freq.

	So I am very much for a general emergency freq. County wide is
good, national is really great. 

	I am really behind a national emergency freq. Maybe we can
agree on one - 146.52 is OK with me. Then maybe when the Japanese come
out with their annual new model VHF rigs, they can hard programme the
thing in with a little red button and an LED. See! Another new feature
to make this year's radio even better than last years radio.

 	Unrelated note. Maybe we can ressurect those lttle triangle
logos that AM radios used to have for use in WW III to denote the 
amateur emergency freqs on all bands.


-- 
Julian Macassey, julian@bongo.info.com  N6ARE@K6VE.#SOCAL.CA.USA.NA
742 1/2 North Hayworth Avenue Hollywood CA 90046-7142 voice (213) 653-4495
From: mikey@slic.cts.com (Mike Shirley)
Newsgroups: rec.radio.amateur.misc
Subject: WANTED: Info on the Ireland Helical-Foil Fiberglass Antennas
Summary: Unknown Ham Manufacturing High-gain VHF verticals
Date: Thu, 10 Sep 92 22:13:38 PDT
Organization: Muth Valley Seismic Control District, San Diego, CA / Port2

Awhile back I saw an article about a ham who manufactured
helical-foil antennas.  Anyone able to point me in the direction
of this ham?  I recall that he was on the east coast.

Or any thoughts on this style antenna with respect to severe
mountain-top repeater conditions?

--
     Mike, WB6WUI   //   INET:  mikey@slic.cts.com   //   GEnie: SLIC
From: Hugh_E._Wells.El_Segundo@xerox.COM
Newsgroups: rec.radio.amateur.misc
Subject: Number 6 washer (was New Topic)
Date: 11 Sep 1992 07:57:02 -0700
Organization: UCSD Usenet Gateway
NNTP-Posting-Host: ucsd.edu

Steve, W3GRG, brought up an interesting subject regarding washers.

I would like to relate one that had us baffled for some time that involved star
washers.  Yes, the answer may be obvious, but is it!  In one of our projects
where we were grounding VHF circuit boards to metal bosses on castings, we
experienced intermittant grounding.  The circuit would occasionally oscillate
as if the ground was missing.  In the original design, a star washer was used
under the head of a screw to bite into the plated pad on the top of the board.
Plated thru-holes were used to make a connection to the plated grounding pad on
the bottom side of the board. The assembly was pressed against a flat casting
boss to achieve a casting ground.

The bottom line is that when the star washer was removed, the intermittant
condition cleared up permanently.   We theorized that the impedance of the star
washer connection was higher than the screw head directly against the plated
pad.

73

Hugh,   W6WTU
Newsgroups: rec.radio.amateur.misc
From: jab0684@usl.edu (Boudreaux Jean A)
Subject: Swan 350 for $200, good deal?
Organization: Univ. of Southwestern Louisiana
Date: Wed, 9 Sep 1992 02:52:01 GMT

I have an opportunity to purchase a Swan 350 HF rig for $200.  I'm told
that the book value for the radio alone is $350.  My deal would include
the power supply for use with ac, and a dc supply for use with 12 volt
car systems.  Since I know little about hf being a new ham,
any input would be appreciated.

73's DE KB5UDF
jean@usl.edu
From: bill@prijat.cs.uofs.edu (Bill Gunshannon)
Newsgroups: rec.radio.amateur.misc
Subject: Re: *146.52 WB1GOF signs in Massachusetts (long, but good!)
Date: 11 Sep 92 12:25:16 GMT
Organization: Department of Computing Sciences

I have been following this debate with considerable interest.
I also think it is a good idea, but what I have often wondered was
why no one petitioned the FCC to create a simple service (or maybe
even make it a part of Part 97) that set up a set of simplex frequencies
just outside the various VHF/UHF bands and designated this for contact
between local emergency services and hams.  As MARS has proven, the
gear can handle it and so can the operators.  The advantage to the
emergency services is the frequencies will be specified and the same
everywhere making it relatively easy to get equipment. Making Commercialy
manufactured HAM gear acceptable would also keep the cost of offering the 
service low enough that Comm-Centers would be likely to participate.

Comments??

bill

-- 

     Bill Gunshannon          |        If this statement wasn't here,
     bill@platypus.uofs.edu   |  This space would be left intentionally blank
     bill@tuatara.uofs.edu    |         #include <std.disclaimer.h>
From: turner@safety.ICS.UCI.EDU (Clark Savage Turner WA3JPG)
Subject: Univ. Calif., Irvine radio club rises again
Newsgroups: rec.radio.amateur.misc
Date: 10 Sep 92 21:31:32 GMT

Just a note - the University of California, Irvine amateur radio club,
struggling for over a year to become active again, will become active
with the club call WB6KGN this month.

Many posts (and messages to me) have gone by on the subject of clubs
but alas, I have been too busy to reply or consider.  I have renewed
committment to club activity.  There are a few of us and we intend to
come up on HF soon, VHF packet in the coming months.

Any e-mail for the club can come through this address.

Clark

.....................

Clark Savage Turner, Graduate Student Researcher
Safety Critical Software Group			home:
Department of Info. and Computer Science	1514 Verano Place
Irvine, CA. 92717				Irvine, CA. 92715
(714) 856 4049					(714) 856 2131

WA3JPG, QRP #3526, active on HF, VHF and UHF.

Vice-President of UCI amateur radio club: WB6KGN.
Newsgroups: rec.radio.amateur.misc
From: dana@locus.com (Dana H. Myers)
Subject: Re: Vertical Colinear
Organization: Locus Computing Corporation, Los Angeles, California
Date: Fri, 04 Sep 1992 22:25:39 GMT

In article <Sep.3.13.45.07.1992.21416@pilot.njin.net> ron@pilot.njin.net (Ron Natalie) writes:
>
>> Can anyone tell me what's in the Ringo Ranger?  It's not just a long wire
>> with a matching section at the bottom, is it?  
>
>That's what it looks like to me.

You haven't looked very hard, have you?

A Ringo Ranger is a collinear array of two half-wave monopoles. The bottom
element is end-fed with a matching section. There is a 1/4 wave phasing
section joining the two monopoles, which is fairly obvious from looking.

-- 
 * Dana H. Myers KK6JQ 		| Views expressed here are	*
 * (310) 337-5136 		| mine and do not necessarily	*
 * dana@locus.com  DoD #466 	| reflect those of my employer	*
 * "Dammit Bones, spare me the lecture and give me the shot!"   *
Newsgroups: rec.radio.amateur.misc
From: little@nuts2u.enet.dec.com (nuts2u::little)
Subject: re: J-pole dimensions wanted
Organization: Digital Equipment Corporation
Date: Wed, 9 Sep 1992 18:28:28 GMT
X-Posted-Via: NEWS-NOTES gateway (a hack!)

    Here is a copy of a message I had squirreled away.  I've made this
    antenna and been extremely pleased with its performance.  I take it on
    trips and hang it from the curtain in my hotel window.  Hitting
    repeaters 60 miles away or more with my 5 W HT hasn't been very
    difficult.
    
    73
    Todd
    N9MWB
    
2M Jpole with 300 ohm twin lead 
>From: kinsman@ektools.UUCP (Andrew A. Kinsman)
Newsgroups: rec.ham-radio
Organization: Eastman Kodak, Dept. 47, Rochester NY

The following is a description of a J-Pole antenna made from 300 ohm
TV twin-lead.  Quite a few of the hams in the area have successfully
built one or more of these antennas. They have quite a few advantages
which include improved performance for 2-meter HTs, portability, and
last, but never least, they are inexpensive.

                    |   | do not short this end.
                    |   |
                    |   |
                    |   |
                    |   |
                    |   |
                54" |   |
                    |   |
                    |   |
                    |   |
                    |     1/4" gap
                    |   |
                    |   |
                    |   | 16 3/4"
coax ctr conductor=>*   *<= coax shield
                    |   |
             1 1/4" |   |
                     -*-
           solder the twin leads together at bottom

1. Start with 54 1/2" of TV twin lead (foam core does not work as well)
2. Strip 1/2" of insulation at bottom and solder wires together.
3. Measure 1 1/4" from soldered wires and strip insulation on both
   sides. This is the solder point for a coax feedline.
4. Measure 16 3/4" from bottom and cut out 1/4" notch on one side.
5. Feed with a length of RG58U coax.  Tape coax at feedpoint to the
   twin lead for strength and weather protection.

I have also attached an alligator clip to the plastic on the top of
the antenna in order to conveniently hang it.  I am successfully using
one in my attic to avoid any CCNR problems.  I have another that I can
take with me camping, sailing, etc.

This design has appeared on many BBSs and in club newsletters; the 
earliest reference that I know of is a Jan. 1984 D.A.R.C. antenna
article by James Burks, KA5QYV.

Enjoy,
N6UBM