73 Amateur Radio Today 07 July 1962.pdf

A TEUR RADIO

July 1962

a paltry 401/.

420 mc by W4HHK

VHF Construction

All Band Nuvistor Pre-selector

•

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73 Magazine Peterborough, New Hampshire

Wa yne Greene W2NSD-Edit or, etcetera

Ju ly 1962 • Vol. VIII, No. I

Phon e: DE 6-8880

The 420 mc Band

. . Pa ul Wilson W4HHK

I ns id e dope o n t his inte r estl mr ba n d by

r- enl expert.

Six Meter Nuvistor Converter

John Sury K8NIC j5

D esigned to plug in D rak e receiver, but w ill work with anyth ing.

VHF Construction

La rry Levy WA21NM

Heed well this article and ) "0 1.: m a y l;IlV C Y UU T,;e1! II lo t of misery.

Th e Eico 720 on Six Meters

James Beckett WA2KT J

You just add a s ep a r a t e pd-ru-t coupler and there yo u are.

Finding Tru e North

• • • • • • • • • • • • • • •

. . . . Andy Wisl er KH6BW

H u ndy if you arc lost i n t h e wuoda.

Modifying the HE-35

. . . . . . . . . . . . . . . . . . . Larry Levy WA21 NM

R evlsft ed.

All Band Nuv istor Pr eselector . - . . . . . . . . . . . . . · . ... . Fred Cupp K8AOE . . . . . . . .

This little gadget makes Quite a difference,

Transistorize that Met er ... . .

M a k i n g VTVM ' s out o f thos e VOM ' s .

• • • • • • . . . . . . . .

Carl Henry

. . . . . . . . . . 26

Rambunctious Radiations

James Ligon W4KOC

• • • 30

It's the location that counts, not the antenna.

The W indom

Drayton Coo per W4WXY

R esurrected and p laced carefully on II pedestal.

Th e Whistler

Bill Leonard W2SKE

. 38

O r h ow to u s e an island a s a n a ntenna.

Power Booster

Jim Kyl e K5JKX

• • • • • • • • • • • • • • • 42

R epla ce t hat 6146 with II GVQ5 and w atc h t he s ig n a l inc r ease.

The Engin eer and the Transistor Radio

H u m o r.

• • • • • • • • • • • • . Bobby Rodg ers . . . . . . . . . . . . . . . . 46

Verm in Tra ps and Dragon Egg s

Sidn ey Rexford W2TBZ

H o w to keep the bugs out when you arc building that riK .

Selectivity Plus

• • • • • • . . .. Don Wherry W6EU M . . . . . . . . . . . 58

105 evcle selectiv ity with a s im p le audio filter.

Propagation Charts

Dave Brown K21 GY

. 62

W h a t time to where. in all probability.

An Old Fri end In A New Sui t

The ARCoS rides again.

. . .. . .. . . . . ..... Bob Baird W7CSD

. 64

Dear Friend

Douglas Hed in K¢OFB

• • • • • 66

K ecp in g those I ndia n s on the reservation.

Associate Edit or s W3 UZN , W4API, W4WKM

C dn ddi a n Re presentative : Ro be rt J . Bu ckland C o. VE3AQE , P. O. Box 563, Chatham, Onto Ph.: (51 9) El4-3 106

W estern Representeti ve : J im Morrisett WA6EX U, 2103 Ind ia St .. l os Angeles 39. Calif. Ph.: (21 3 ) NO -4 -7840

Cover : Design by Bob Kelty K2VlO

73 Ma g a z in e is publi shed month ly by Amateur Radio Publishing, Inc.• 11 6 ~tain Street, Norwalk ,

Connecticut. Please no t e that the address of the business office where you are to s e n d all correspondence.

su b sc r ip t io ns, submitted a rticles, etc.. is at the top of this page. The telephone number is here too

and we dare YOU to try t o get i t f rom t he phone company. Subscription rates . whi le c ove r ed r a l h er

completely i n the regular subecr tptton ad , are: U.S.A. and P088Cl'8io n s . APO. F PO. Ca nada and Mexico :

one year f or $3.50, two s- ears $6.50. t h r ee y ean $9.00 , F o r ei gn : One year $4..00. Second class pasta Ke

paid at N o r w a lk. Connecticut a nd at add itional mailing offices. P r in ted i n the U.S.A . Ent fr e contents

copyright ! !)(j2 by Amat eur R adio I'ubllshing , I nc. I' u st m a et e r : P lea s e s e n d form 357~ to 73 M a g uzi n e ,

P ete rborou gh, New H amp s hi r e .

JU LY 1962

, , ,

de W2NSD

.. . never say die

Convention Hall

publishing 73 from a small, dingy apartment

in Brooklyn. This has been incredibly frustrat-

ing for we have been cramped and have not

been able to set up anything passable in the

way of a ham station. Thus, for well over a

year we have been trying to figure out where

we would most like to have the magazine

Incated. We looked over Westchester County

pretty carefully and found that in most places

ground was sold by the foot, not the acre. This

makes an antenna farm awfully expensive.

Next we investigated upper New York State,

then Connecticut. Still too costly. We finally

decided to look for our new home in lower

New Hampshire. This seemed to offer us the

most. It would only be an hour or so out of

Boston so we could get all the big city services

we need for running a publishing business. It

would be much cooler than New York and

more comfortable for working. Land is so

much lower there that we could afford some-

thinp; a lot nicer than we could manage further

south. New Hampshire has extremely low

taxes, the third lowest of all the states! Thus,

should we ever make any money, we would

not have to immediately tum it over in taxes.

On May 30th Virginia and I settled into the

Porsche and headed for New Hampshire to

find our new headquarters. After trying two

different rea] estate salesmen we came across

a natural: John Peterson in Peterborough. John

had a Porsche Speedster just like mine. 11

didn't take long until we were on our way to

our new offices.

We had discovered that it is difficult to buy

a large house and grounds if you don't have

any money. This developed into quite a stum-

bling blnck. It didn't even slow John down, he

immediately thought of a place that was avail-

able for rent. \Ve drove over, looked at it. and

knew immediately that this was for us. \Vait'll

you see itl There are so many rooms that even

I will be hard put to fill them up. We counted

at least 20 rooms and five or six bathrooms.

There is a huge garage that will hold all of the

cars that happen to be visiting. There is even

a nice modem clean bam. We walked from

National Convention

The gang up Oregon way are cooking up

quite a convention. Though it has been my

policy to let the League promote League func-

tions, there is an off chance that some eyes

might scan this page that might otherwise

miss the news through a too-hurried scanning

of QST's pages. The convention will be held

at the Portland Memorial Coliseum on Sep-

tember 1-2-3. There will be exhibits, talks,

prizes, tours, and all other convention-like

events. Drop a note or QSL to Convention,

Box 1335, Portland I, Oregon for a nice

brochure. Perhaps by next year 111 have 73

well enough in hand to be able to get to

some conventions. I sure wish I could make

it to Portland and the nearby Seattle World's

Fair for this National ARRL gathering.

, , . de W2NSD/1

If you are normal and read the magazine

from the back, you have probably already

noticed that I have cut down the number of

pages in this issue even though there are

plenty of ads. There is a method in my mad-

ness. It isn't just that I think you have been

living too high with us publishing 27 feature

articles last month to seven and eight in the

other two ham magazines, it is only that I

have to save a little money this month so we

can move our editorial offices to a new IDea-

tion. Let me explain.

In the interests of economy we have been

73 MAGAZINE

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illu min ated ed ge wise panel meter and pin-ne t work out pu t for

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80 THRU 10 METERS • STABLE OSCillATOR AND BFO FOR

CLEAR CW AND SSB RECEPTION. BUILT·IN EDGEWISE S-

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sensitivity is 1.0 microvolt for 10 db, Signa l t o Nois e rat io.

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10 db at 3. 5 Me with 1.25 microvolt signal. Selectivity is -60

db at 10 kc, Image reflect ion i s -40 db at 3 MC. Tubes : 3-

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• Hl,hl' Sensitive Superheterodrne Ree, Jytr

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• Efftctlve Series Glte Noise Limiter

• 3-Stage, 12·Watt Transmitter with 2E26 Final

• Illuminated Panei Meter for Plate Current and "S" Readings

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• Built.ln 117 VAC and 12 VDC Power Supplies

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_ ........•... Zone .•._ State .•.....•.••-.---- - ..--

JULY 1962

FOR BIGGER VALUE-PROGRESSIVE DESIGN

City.•._ .•.._ •... _

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