Radio Shack RS-2000 Bedienungsanleitung PDF herunterladen (Seite 4)

64 September 2000

in building a higher-performance regen receiver for serious CW

and SSB reception should read my article “High Performance

Regenerative Receiver Design.”

You can also see the project at

http://www.electronics-tutorials.com/receivers/regen-radio-receiver.htm

Notes

A PC board for this radio is available from FAR Circuits, 18N640 Field Ct,

Dundee, IL 60118-9269, tel 847-836-9148 (voice and fax). Price: $5 each

plus $1.50 shipping for up to three boards. FAR Circuits offers a group

discount rate of 10% for orders of 10 or more boards. Visa and MasterCard

accepted with a $3 service charge; [email protected]; http://www.cl.ais.net/

farcir/.

Suppliers include, but are not limited to: Antique Electronics Supply, 7221 S

Maple Ave, Tempe, AZ 85283; tel 480-820-5411, fax 800-706-6789, 480-

820-4643; [email protected]; http://www.tubesandmore.com;

Digi-Key Corp, 701 Brooks Ave S, Thief River Falls, MN 56701-0677; tel 800-

344-4539, 218-681-6674, fax 218-681-3380; http://www.digikey .com; Fair

Radio Sales Co, Inc, 1016 East Eureka St, PO Box 1105, Lima, OH 45804;

tel 419-227-6573, 419-223-2196; fax 419-227-1313; e-mail fairadio@

wcoil.com; http://www.fairradio.com/; Ocean State Electronics, PO Box

1458, 6 Industrial Dr, Westerly, RI 02891; tel 800-866-6626, 401-596-3080,

fax 401-596-3590; RadioShack—see your local distributor. RadioShack.com

L. P., 300 West Third Street, Suite 1400, Fort Worth, TX 76102; http://

www.radioshack.com/; The Electronic Goldmine, PO Box 5408, Scottsdale,

AZ; 85261; tel 800-445-0697; fax 480-661-8259; e-mail goldmine-

[email protected]; http://www.goldmine-elec.com.

Charles Kitchin, N1TEV, “High Performance Regenerative Receiver De-

sign,” QEX, Nov/Dec 1998, pp 24-36. See also Charles Kitchin, N1TEV,

“Regenerative Receivers: Past And Present,” Communications Quarterly,

Fall 1995, pp 7-26.

26 Crystal St

Billerica, MA 01821

[email protected]

THE LOGIC OF MICROSPACE

By Rick Fleeter, K8VK

Published jointly by Kluwer Academic

Publishers and Microcosm Press. Avail-

able from Microcosm Press, 401 Coral

Circle, El Segundo, CA 90245-4622; tel

310-726-4100; http://www.smad.com.

9 inches, 477 pages. Softcover. ISBN

1-881883-11-6. $29.95.

Reviewed by Steve Ford, WB8IMY

QST Managing Editor

◊ The Logic of Microspace has noth-

ing to do with Amateur Radio—and ev-

erything to do with Amateur Radio.

Hams pioneered the concept of microsatellites—compact space-

craft designed to be deployed at minimal cost while offering flex-

ible functionality. The results are orbiting overhead as you read

these words. Several of the first Amateur Radio microsats

launched almost 10 years ago are still very much alive and well.

Microsats have since moved into the commercial sphere with

corporations, governments and even NASA embracing the con-

cept. In fact, author Rick Fleeter, K8VK, is president and CEO of

AeroAstro, a company that designs and builds microsats.

But we still haven’t addressed the question of why you should

be interested in reading The Logic of Microspace. There are two

reasons: (1) To gain an education in the fascinating world of space

technology in general and microsats in particular and, (2) because

this book is a pure delight.

Rick Fleeter is one of those rare individuals who can not only

explain technical topics to any audience, he can do so with highly

effective humor. This gifted combination of talent makes The

Logic of Microspace one of the most unusual science and technol-

ogy books you’ll ever read.

Like his previous work, Micro Space Craft, The Logic of

Microspace is the kind of title that seems deliberately designed to

hide the true content of the book. If you saw The Logic of

Microspace sitting on a bookstore shelf, chances are you’d stroll

right by without giving it much more than a glance. (Oh, another

one of those boring academic snoozers!)

You couldn’t be more wrong.

In The Logic of Microspace Fleeter takes complex topics such

as rocket propulsion and orbital mechanics and explains them

clearly, without patronizing. The Logic of Microspace eschews

the stuffy traditions of academic and technical writing. (There

isn’t a “hitherto” or a “thus” to be found.) Instead, The Logic of

Microspace is totally conversational and often downright hilari-

ous. Fleeter’s writing style is filled with contemporary references

to pop culture (rock n’ roll in particular). Imagine a technical book

written by a tag team of Carl Sagan, P. J. O’Rourke and Hunter

Thompson and you’ll have a pretty good idea of what to expect

with The Logic of Microspace.

A glance at some of the chapter sections will give you a sense

of the “atmosphere:”

• Weather, Ecology And Another Proof of the Existence of

God

• How Mother Nature is Cruel to Eight-Year-Olds

• A War Waged for the Sake of the Clueless (my personal

favorite)

The Logic of Microspace is really three books in one. The first is

a treatise on space technology and physics. The second is a fascinat-

ing examination of the politics, planning and psychology that under-

lies much of the work involved in aerospace projects. The third is the

biggest surprise of all—a work of science fiction. The 94-page no-

vella is titled “A Wrinkle in Microspace” and it is as compelling as

anything you’ll find on the fiction shelf of your local library.

Although it may not be obvious, Amateur Radio illuminates

every page of The Logic of Microspace. Insatible technical and

scientific curiosity is what drove Rick Fleeter to become a ham in

the first place. That same muse guided him later to a career in

aerospace. The Logic of Microspace is, in many ways, a testimonial

to the fundamental “spirit” that brings us all to this hobby—and

carries some of us, such as Rick Fleeter, much farther.

NEW BOOKS

NEW PRODUCTS

CAPANALYZER 88A IN-CIRCUIT CAPACITOR TESTER

◊ The CapAnalyzer 88A allows testing of electrolytic and tanta-

lum capacitors in-circuit by measuring the equivalent series resis-

tance (ESR) and the dc resistance (DCR)—eliminating the need to

desolder the component from the pc board.

The test instrument discharges the capacitor, checks it for low

DCR, reads out the high-frequency ESR and allows you to quickly

compare those readings with the industry standard values conve-

niently provided on a three-color chart on the front panel.

There’s also a QuickESR mode to speed ESR-only testing and

a 1- to 5-beep tone alert system that allows you to know the ap-

proximate ESR reading without having to avert your attention

from the device under test.

The included tweezer-type probe allows easy one-handed test-

ing of both normal and surface-mounted capacitors and uses co-

axial cable instead of separate test-probe wires, insuring stable

readings even on small capacitors.

The CapAnalyzer 88A is battery powered—an optional ac

adapter is also available.

For more information, visit your favorite electronics distribu-

tor or contact Electronic Design Specialists, Inc, 4647 Appala-

chian St, Boca Raton, FL 33428; tel/fax 561-487-6103; info@

eds-inc.com; http://www.edsinc.com/.

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