Elecraft_Slides2

7/26/2019 Elecraft_Slides2

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Homebrewing, DX’ing

and QRP

(How to re-energize your interest in

Ham Radio without Viagra…)

Bringing the fun of building back to Ham Radio.





Who Are We? Both hams since ‘71

Wayne (N6KR, ex WN6HQH)

– QRP Design Fanatic (Sierra, NorCa!", SS#$%– B&S& Cogniti'e Science, CSD

– Siicon )ae* +* (Firm-are . // . 0%

Eric (WA6HHQ)

– ami2a3e QRP D45er (NorCa!" D4CC%

– B& S& /ectronics, 6ae

– Start A88ict9 :ontain Com&, )eris*s, /ecra;t



Eric, WA6HHQ Wayne, N6KR



Comimentar* St*es

Wa*ne – N<R9 QRP, =o- Po-er Drain, Porta>e

/egant, :inimm Nm>er o; Parts /as* to se, /ceent Docmentation

/ric – WA<@@Q9

QR.QRP, @igh Per;ormance Design Big Rig Featres Soi8 /ngineering Design



+oas$&& Re>irth o; the ‘@eath2it5 /erience

Bi8ing an8 sing *or rig is Fn (!o"o#)

Create a -or8-i8e commnit* o; /ecra;t >i8ersto share their eeriences&

/ncorage orta>e @F oeration&

Bring >ac2 the ecitement o; >i8ing, mo8i;*ing,

(>rea2ing%, ;iing an8 oerating -ith eiment *o

ha'e >it *orse;



Porta>e . :o>ie D45ing ($%!-&%! is H' with

the sunsot eak*)

Wor8 Wi8e Bi8er Commnit* on theinternet an8 on the air& Chasing D4 #his time QRP Bi8ing :o8i;*ing or o-n Ra8ios :eeting ne- eoe -or8 -i8e on the air& Sharing eeriences an8 i8eas&

The Excitement is Back!



K1 Four or Two-Band HF Transceiver



Introducing the K1…a compact, high-performance CW rig that you

can build.

HF operation is more fn than eer these "ays#fie $atts is a%% yo nee" to

$ork $or%"$i"e &'( That)s $hy $e)e packe" four *an"s into or

affor"a*%e easy+to+*i%" K transceier( With yor choice of -for- HF

*an"s ./0, 10, 20, an" 3 or 4 meters5 or -t$o- *an"s .0, /0, 10, 20, 3

an" 4 meters aai%a*%e5 yo)%% *e a*%e to 7o $here the action is, "ay or

ni7ht(

“I Can’t Beliee It’! a Kit"# The K is small #on%y 2(28H x 4(28W x 4(68&, an" $ei7hs (/ pon"s( 9et

$e)e inc%"e" many featres yo)" expect in a "esk+top HF transceier,

inc%"in7 R:T an" ':T, f%% *reak+in ;W, memory keyer, three crysta% fi%ter

*an"$i"ths, confi7ration men, speaker, an" "i7ita% "isp%ay( The K is

sty%e" to match or a%%+*an" K2 transceier, $ith the same <%ook an" fee%,=attention to "etai%, an" operatin7 mo"o yo)" expect from E%ecraft(



$n %& radio you'll neer leae at home

>ookin7 for a"entre? With its %o$ receie+mo"e crrent "rain of n"er 4

mA, the K is a natra% for porta*%e operation( .9o rea%%y can po$er it from a

@+o%t *attery, in a pinch, thanks to or %o$+"ropot +o%t re7%ator(5 Hikers

$i%% appreciate or nie Wi"e+Ran7e Ti%t tan" .mo"e% KT5, $hichspports the ra"io at any "esire" ie$in7 an7%e(

Ideal for fir!t-time (it builder!

We se on%y through-hole components in the K to make constrction an"

testin7 a *reeCe( An" or wireless "esi7n metho"o%o7y e%iminates near%y a%% point+to+point $irin7( Fina%%y, the front pane% an" fi%ter *oar"s p%7 "irect%y

into the RF *oar" to form a c%ean, r77e" assem*%y( 9o)%% *e tempte" to %eae

the coer off to a"mire yor $ork!

9o a%so $on)t nee" a %a*+f%% of test 7ear to a%i7n the K( :t inc%"es a *i%t+in

"i7ita% o%tmeter, $attmeter, an" freency conter(



K1 ) Coer *ff



K1 ) +ide ie /anel! 0emoed



K$21 $23 4ounted aboe K1 &ilter Board



Comprehen!ie $!!embly 4anual 9o)%% fin" the K mana% easy to fo%%o$, $ith step+*y+step assem*%y, c%ear

i%%strations an" photos, an" mo"%ar checkot of each maDor section( There)s a%so

a "etai%e" theory of operation section, as $e%% as a comp%ete tro*%eshootin7

7i"e(

+trong Cu!tomer +upport

r technica% spport ia te%ephone an" the :nternet $i%% 7et yor E%ecraft K p

an" rnnin7 ick%y( n+%ine mana%s, freent%y aske" estions .FAQ5,app%ication notes an" or ser 7rop e+mai% %ist make *i%"in7 the K a 7reat

experience(





K1 wit !ide Range Ti"t #tand $%or %ie"d use&



Te K' (!)##B HF Transceiver





The K2 Sma an8 =ight9 G 7&E 7&E L G=>s&

1<"1" metersL P== s*nthesi3e8

CW on* an8 SSB.CW (SSB gra8e%

Do-n con'ersion to o- 0F (!&H1E:@3%– Best tra8eo;; o; cost . comeit*

– 0F 8eri'e8 A+C, )aria>e B.W CW cr*sta ;iter

1"W P/P (1""W otion mo8e%





K' ##B *+tion 1. ) 'nd /nt *+tion

/udio Fi"ter)

Rea" time ("oc0



I R i P ; C i



I Recei'er Per;ormance Comarisons

$um!ers in R+, in%icate results that are !elow a&erage for the ra%ios liste%" See the actual 'RRL re&iews for %etails"

R2 .D# $dBm& .DDR3 $dB& +3 $dBm& +' $dBm& BDR $dB&Pase

4oise ."Bc

at / kHC5

K' -131)-135 67 ) 65 8'19 ) 896 87 ) 87: 13 ) 1'5 -1'

FT-1.P +2 G+14 @3 G @/ 4 G 4 6G /2 G 13 +

Ten-Tec *mni8 +11 @3 2 4 21 .n%5 +3

(-7: PR*;; -1'5 ) -13 G

-*

6: ) 6' G ++ 81:9< )

8<93 G -,"#

8< ) 83 G

1'7 ) 1': G

.* +10

T#-57 +2@ G +1@ @3 G @4 6 G / 61 G 61 23 G 21 +

Kacina ::D#P +11 G +/2 @@ G @3 4(4 G 1(4 8<6 G 10 13 ) 13 +3

Pegasus ::D#P +12 77 3(2 8<<93 11 $n"& -1<

Patcom P(1/ -1'7 @/ 3(6 8:<91 115 -1

(-7.K2 +16G+/2 56 ) 5 -193 ) -11 16(/ G

8359:

22.n%5G20.n

%5+

T#-: +12G+1@ 6 ) 55 1G-7 not meas( 113 ) 16 +4

Ten-Tec #cout -1': 57 4(4 not meas( 116 -6:

#2(-'' +10 55 4(4 83' 11 $n"& -15



RX (om+arison 4otes=

These nm*ers are for /hC operation, 400 HC ;W fi%ter, AI; off, Hi7h :p mo"e( XX ) >> J .preamp+off5 G .preamp+on5 test res%ts

// 0he 12-73, PR4 has two %ifferent gain preamps" $um!ers are for Pre-4ff 5 Pre 6 5 Pre 6." Pre 6. a%%s more R gain than Pre 6 at the

expense of %ynamic range" 8igher preamp gain re%uces strong signal %ynamic range" 9or comparison: Pre-4ff an% Pre 6 most closely match

the .<s an% other ra%io<s settings an% are the most commonly use% positions

nl = test was noise limite% (noise floor rose %! !efore %! of !loc>ing %esense occurre%)

.D# J inimm &iscerni*%e i7na% .1"* increase a*oe noise f%oor5( >ar7er ne7atie nm*ers are 7enera%%y *etter, *t too mch sensitiity

can re"ce stron7 si7na% "ynamic ran7e an" :p1( re+Amp n & nm*ers of +1/"Bm or more are more than a"eate for most HF *an"

operatin7, since *an" noise is typica%%y a*oe this nm*er( (Lower fre?uencies nee% less @AS (more num!er) %ue to an increase in

atmospheric noise")

.DDR3 J 2 tone .20 kHC spacin75 1r" or"er T$o tone :& &ynamic Ran7e( This test sho$s ho$ the R' performs in the presence of

m%tip%e stron7 near*y si7na%s in re%ation to its sensitiity .&5( Hi7her is *etter( re+Amp ff :&&R1 nm*ers of @4"Bm or more areconsi"ere" exce%%ent(

+3 J 2 tone .20 kHC spacin75 1r" or"er :ntercept oint( This test a%so sho$s ho$ the R' performs in the presence of m%tip%e stron7 near*y

si7na%s( Hi7her is *etter( re+Amp FF :1 nm*ers of 4"Bm are 7oo", an" 20"Bm or more is exce%%ent( $ote Low R sensiti&ity can also

artificially increase the measure% 1p"

+' J 2 tone .(020HC, 6(000HC5 2n" or"er :ntercept oint This test sho$s ho$ the R' performs in the presence of m%tip%e stron7 ot of

*an" si7na%s .sch as *roa"cast si7na%s on 6hC an" hC creatin7 *ir"ies at /hC5( Hi7her is *etter( A re+Amp FF :2 of 44"Bm is K,

an" 30"Bm or more is consi"ere" exce%%ent(

BDR J B%ockin7 &ynamic Ran7e .20 kHC spacin75( This test sho$s $hen the receier)s sensitiity *e7ins to "rop in the presence of stron7 near

*y si7na%s( .&esense5( A re+Amp FF B&R of 7reater than 20"Bm is 7oo"( Ireater than 10"Bm is consi"ere" exce%%ent(

Pase 4oise J a%e rea" from ARR> test 7raph at 0 kHC from the carrier( Nm*ers are for the $orst case *an"( >ar7er ne7atie nm*ers are

*etter( Ba" phase noise contri*tes to poor R' B%ockin7 &ynamic Ran7e ."esense from near*y si7na%s(5 Ioo" a%es are +20 "Bc or *etter at

0 kHC( ee the acta% ARR> phase noise p%ots in each reie$ for "etai%s of other sprios phase noise components(

'RRL Results are from CS0 rig re&iews (.: 5**; 1273, PR4: ,5**; 4mni,: 5#7; 90***@P: 5#,; Scout: .5#; 0S-3*: #5#; SD2-.*.*:

*5#+; 127*,@11: 75##; 0en 0ec Pegasus: .5**; achina 3*3ASP: 35#+; Patcom P2-,**': .5**)





K2 B%ock &ia7ram

LOW-PASSFILTERS

POWERAMP(10W)

BAND-PASSFILTERS

T-R CRYSTALFILTERS

EleCraft K2 MAIN PCB BLOCK DIAGRAM

W. Burdick/E. Swartz Rev. A 11-30-97

ATTEN.ANDPREAMP

RCVMIXER

1ST I.F.AMP

RX ANT.SWITCH

ANT.

BUFFER

DRIVER

XMITMIXER

2ND I.F.AMPT-RT-R

NOISEBLANKER

AGC

BAL.MOD.

VCOSYNTH.

T-RT-R

Option

BFO

PROD.DETECTOR

MICAF

AFOUT

Common Transmit ReceiveKEY

12VRX ANT.

I.F. OUT

ON/OFF

Connector

12V DC











Introducing

“Wow! You built that yourself?”

K2Fundamentals– :o8ar, gra8ea>e, no -ires constrction

– ser mo8i;ia>e 8esigns

– /;;icient 1I' oeration ;or home or ;ie8 se– /ceent cstomer sort





Put the Fun back into Amateur Radio

The K2 160-10m SSB/CW Transceiver

re-creates the excitement of buildingand operating a full featured HF radio.

Discover the thrill of building and really

understanding your own radioequipment.





Low Power Consumption The K2 is designed for use both athome and in the field. The K2’s low

receive current (approx. 100-150ma in battery save mode) makes portableoperation possible from small gel-cell

batteries. The K2 even includes anoption for aninternal 2.9AH battery.







Easy to Build, Understand and Repair

Elecraft’swireless design methodologyeliminates most point to point wiring.The K2 also includes built in test

equipment: voltmeter, frequency counter,and RF power meter. Telephone and on-line technical support will get you up and

running quickly.



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Elecraft_Slides2