2003-Spring.pdf

MinuteMan 20" Portable HF Antenna

Where do you want to operatefrom today?

From the Backyard

From the Park

From the Mountaintop

A Station in a Briefcase

competitive antenna gives you all of this:

- Sets up in minutes

Efficient operation on 20-17-15-12-10 M

- No tools required

us Fits in a briefcase, backpack, carry-on

= High Efficiency, Low-Loss design

a9 No support or guying required

No assembly required

DH No tuner required (in most cases)

us NO extras to buy

Free-standing base assembly

Oversquare Hi Q coil

Specifications:

Weight: 5 lbs.

Height: 13 feet (maximum)

Longest piece: 17 inches

Power: Rated at 100 Watts

sets up anywhere, anytime

for best efficiency

Proudly made in the USA by

Quicksilver Radio Products

30 Tremont Street

Meriden, Conn. 06450

SunLogic Micro M+

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Solar current capacity up to five (5) amps

Front mounted terminal strip for easy hookup

The SunLogic Micm M+ is only $39.95 fully assem-

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"Everything For The Morse Enthusiast"

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Free Catalog

303-152-3382

2460 S. Moline Way

Aurora, CO 80014

Conte:nts

Technical

Idea Exchange-Mike Czuhajewski-WA8MCQ

It b Safe to Go Back to QRF-L

New RF Book From Hayward and Friends-WA8MCQ

DDS and the QuickieLaLNZCX

Manhattan Construction on a Scrap PCB-N2ZHS

Defective PCB Causes Problem-W2AGN

Using Plastic Spacersfrom Ammo Boxes-N2ZHS

Portable Dipole Antenna Observations-W8FNM

Defective Electrolytic Caps in the Supply Chain-WA8MCQ

K2 On-Frequency Receiver Overload Mod-N6KR

YFO mth LTCl799 Chip Doesn 't Pan Out-WA8MCQ

High Voltage Safe@-KSKVH, WSYR,W31RZ

Changing HW-8 T/R Frequency Ofset-WA8MCQ

Toroid Calculator Programfmm WRDIZ-WA8MCQ

Micro Momenb #4: Zise a BASIC Stamp to Send GPSPositioning in Morse Cod+N2APB

QRP Online

Volume 44 Number 2 - Spring 2003

A Compressed Air Powered Antenna Launcher-Alan

Biocca-WB6ZQZ

Denison-KEILA

My New 40 Meter Antenna-Joel

A Differential-T Antenna Tuner-Mike

Branca-W3IRZ

The Nursing Home LoopDick Arnold-AF8X

3 1

Digital QRP Homehrewing-George Heron-N2APB

The Digital QRPBreadboard ... Part 7: "Hello DDS and GPS"

Spotlight on... The NK0E "PIC WeatherStation " Part 4: Wind Speed

page 6

QRV? "1 can't give you more power, Captain,she's gonna blow"-Mike

Boatright-K04WX

Test Topics and MoreJoe Everhart-N2CX

Q Measurement Methods

A 20 Meter Transceiver-Tom

Duncan-KG4CW

Modifying the Heathkit KM-102 for QSDonald Sanders-W4BWS

Operating

QRP Contests-Randy Foltz-K7TQ

Running of the Bulls

Fall QSO Party

Top Band Sprint

Holiday Spirits Sprint

A Field Day Checklist4ary Breed-K9AY

Columns and Departments

From the Editor's Desk-Mike

Boatright-K04WX

From the President-Joe

Spencer-SNA

Announcements

A Reminder-Plan to Attend FDIM!

New Members this Quarter

Peaux Displaced Cajun Lad in Maine-Joel

Denison-KEILA

Miscellaneous

A Photo Tour ofFDIM 2001 & 2002

dBm-Volts-Watts Power Conversion Chart

Book Reviews-Tony Fishpool44WIF

RSGB Technical Topics Scrapbooks (Volumes I, 2 & 3)

Antenna Topics

New or Renewal Membership Application

page 34

QRF'ARC1 Staffand Directors

2 . Spring 2003

The QRP Quarterly

www.qrparci.org/

From

the Ec

QRP QUARTERLY

EDITORIAL STAFF

Aike Boatright, KO41

kC-Editc

Editor & QRV

Mike Boatright-K04WX

1013 Latham Rd.

Decatur, GA 30033

ko4wx@mindspring.com

Associate Editor

Larry East-WlHUE

15355 S. Rimline Dr.

Idaho Falls. ID 83401-5917

wlhue@arrl.net

Associate Editor

John King-KB3WK

9936 Whitworth Way

Ellicon City, MD 21042

kb3wk@arrl.net

Associate Editor & Idea Exchange

Mike CznhajewskiiWAllMCQ

7945 Citadel Dr.

Sevem, MD 21 144-1566

wa8mcq@comcast.net

Associate Editor4ontests

Randy Foltz-K7TQ

809 Leith St.

Moscow, ID 83843

rfoltz@turbonet.com

on out there that many stateside hams

never get the opportunity to experience.

As we go to press with this issue, many

of us are glued to our televisions to see the

latest up-to-the-minute news on battles in

the Middle East. Now, I am not here to

debate the pros and cons of any of that, no

sir. But it does bring to my mind that it is the

international camaraderie of our QWgang

(and other amateurs that enjoy the hobby as

much as we seem to) that seems to tran-

scend all politics, religions and wars. There

is no Q-signal for "are you pro or con?" nor

for "are you with us or against us?"

It would be terribly presumptuous to

think that QWARCI could or would ever

have direct impact on the events in the

world, hut I personally believe that any-

thing that spreads international goodwill

and friendship like our group does certain-

ly cannot hurt. With that in mind, I am

going to jump in feet first as your new edi-

tor and issue you, the membership of QRP

ARCI, a challenge that in the next issue of

QRP Quarterly we have at least one new

regular column (you pick the topic) and at

least four articles from international

authors. Are you up for the challenge?

On a personal note, many of you may

have at one time met--or heard me talk

about-a wonderful old Gordon Setter

named Daphnne. I once operated a slow

speed Fox and Hounds hunt under her

name. She was the best dog that a QRP

operator could have ever asked for. With

heavy hearts we had to put her down in the

midst of putting together this issue of the

QRP Quarterly. In my life, I have never

had a more loyal, loving canine friend,

and seasyour new editor-I dedicate

this issue to her and to the many others

like her who have brought joy to QW

operators everywhere.

T here is iiowhere on tlie plane1 prcliicr

than Atlanta, Georgia in the spring-

time. What does that have to do with QW?

Well, for one thing, your new QRP

Quarterly editor happens to live there

(and, frankly, he is vely biased about

where he experiences springtime!). For

another, it means that with spring here,

FDIM is just around the comer. Add to that

a new season of outdoor operating contests

(for those that do not go for freezing their

buns off) and a whole new slate of trail-

friendly radios to go with them, and you

cannot help but be happy!

New editor, you say? Well, all good

things must change, I guess. I am humbled

to walk in the footsteps of all of the won-

derful editors that have made this the pre-

mier journal of QRP operating, construc-

tion, and just plain fun!

There are other changes coming along,

but I will leave those to Joe Spencer,

KKSNA to announce. It is all for the better,

folks-I promise.

My personal goal as editor of QRP

Quarterly is to see it become the premier

international journal of QRP operating,

construction, and fun. International? Wait

a minute, is it not already an international

magazine? Well, yes, it is. But I have per-

sonally done a fair amount of international

travel, and I know that there is a lot going

REGULAR COLUMNISTS

Digital QRP Homebrewing

George Heron-NZAPB

?41< Fcdthcr Mac Ct

Forest HI]!. \ID 21050

Test Topics and More

Joe Everhart-NZCX

214 NJ Rd.

Brooklawn, NJ 08030

n2cx@voicenet.com

QRP Clubhouse

Mike Fletcher-KL7lXV'I

Poulsbo, WA

kl7ixi@atthi.com

peaux displaced cajun lad ...

Joel M. Denison. Sr-KEILA

POB 542

Strong, ME 04983-0542

hamjoel@juno.com

de Mike, KO4 WX

On the Cover

It's springtime and those of us who don't work on antennas in the dead of winter

will soon be busy stringing up new wires. How about a new antenna tuner for that

dipole, loop or box-spring? Our cover photo is the inside of a Differential-T Antenna

Tuner built by Mike Branca, W3IRZ. While there are some pretty good commercial

differential-Ts on the market, homebrew is certainly within the reach of most hams.

Check out Mike's article on page 28 for the details.

--Mike, KO4 WX

Spring 2003 . 3

The QRP Quarterly

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