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©2009 Hamtronics, Inc.; Hilton NY; USA.  All rights reserved.  Hamtronics is a registered trademark.    Revised: 7/28/11  

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FL5

 

LONG DRAIN LEAD

 

+

 

_

 

DISC. TP-3

 

1

 

8

 

4

 

5

 

U2

 

Audio Out.

 

1

 

16

 

8

 

9

 

U1

 

IF Ampl.

 

+

 

_

 

Q1

 

LONG DRAIN LEAD

 

Q2

 

L1

 

L2

 

L3

 

L4

 

+

 

_

 

SIG. LEVEL TP-2

 

OSC TP-1

 

FL1

 

FL2

 

FL3

 

FL4

 

Q3

 

Q4

 

Q5

 

U3

 

Y1

 

Y2

 

LETTERING ON F.E.T. MUST BE

 

DRAIN

 

SOURCE

 

GATE 1

 

GATE 2

 

Q1 & Q2

 

TOP VIEWS

 

  U3  

 

OUTPUT   GND  INPUT

 

E   B   C

 

Q3-Q5

 

VISIBLE FROM TOP OF BOARD

 

C27

 

C26

 

C10

 

R3

 

C11

 

C

 

7

 

C

 

8

 

C

 

9

 

C

 

5

 

C

 

6

 

Z1

 

C12

 

C13

 

L9

 

L5

 

Z2

 

Z3

 

C39

 

C14

 

C40

 

C25

 

R7

 

C24

 

C23

 

C1

 

R1   C3  R2          C2            J1

 

R23

 

E4 - COS

 

E5 - DISC.

 

E1 - REP. AF

 

E2 - SPKR

 

E3 - PWR

 

R8

 

C29

 

R13

 

R14

 

C31

 

C30

 

CR1

 

CR2

 

R16

 

R15

 

C32

 

R18

 

C33

 

C34

 

R17

 

C37

 

R22

 

C38

 

C28

 

C35

 

C36

 

R20

 

VOLUME

 

SQUELCH

 

R10

 

R9

 

R11

 

R6

 

R12

 

C15

 

C16

 

R19

 

R4

 

C17

 

C18

 

R5

 

C20

 

C21

 

C22

 

L6

 

L7

 

L10

 

Z4

 

R21

 

C43

 

C41

 

C42

 

L8

 

C19

 

OV-1 XTAL OVEN OPTION

 

C4

 

Figure 1.  R100 Receiver, Component Location Diagram

 

+

 

_

 

10.7 MHz TP-4

 

Содержание R100

Страница 1: ...ends of the di odes should be down i Install transistors Q3 Q5 and voltage regulator U3 observing proper orientation j U1 and U2 have a dot over pin 1 or a notch in that end for identification as sho...

Страница 2: ...put filtered discriminator audio is available at E5 The level is about 2V p p Note that discrimi nator audio is not de emphasized If you need audio which is squelched take it from Re peater Audio term...

Страница 3: ...it is easy to install parts in the wrong place Don t take anything for granted Dou ble check everything in the event of trouble Signal Tracing If the receiver is completely dead try a 10 700 MHz sign...

Страница 4: ...sq open 7 6V sq closed U1 14 0V U1 15 0V U1 16 1 8V U2 1 0V U2 2 0 5V U2 3 0V U2 4 0V U2 5 0V U2 6 7V U2 7 13 6V U2 8 6 8V Typical Audio Levels Following are rough measurements of au dio circuits usi...

Страница 5: ...GATE 1 GATE 2 Q1 Q2 TOP VIEWS U3 OUTPUT GND INPUT E B C Q3 Q5 VISIBLE FROM TOP OF BOARD C27 C26 C10 R3 C11 C 7 C 8 C 9 C 5 C 6 Z1 C12 C13 L9 L5 Z2 Z3 C39 C14 C40 C25 R7 C24 C23 C1 R1 C3 R2 C2 J1 R23...

Страница 6: ...R 8VDC 8VDC TP 1 OSC INJ Q4 MULT C1 C2 C4 C5 C6 C7 C8 C10 C15 C16 C17 C18 L1 L2 L3 L4 L8 L9 R3 R6 Y1 Q3 OSC MULT FL1 C9 L5 FL2 FL3 FL4 IF SIGNAL 10 7 MHZ L6 Z1 Z2 Z3 Z4 J1 ANT C3 R1 R2 C11 C12 C13 C14...

Страница 7: ...red L5 10 7 MHz IF transformer p n 7A 691F or T1005 L6 L7 6 1 2 turns blue L8 L9 2 1 2 turns red L10 455kHz IF transformer p n T1003 Q1 Q2 N E C 3SK122 or Philips BF 988 dual gate mos fet static hand...

Страница 8: ...U2 LM380N 8 Audio Amplifier U3 78L08 Voltage Regulator Y1 Channel Crystal see text Y2 10 245 MHz 62 pf parallel resonant IF xtal Z1 Z4 Ferrite Beads double long Note disc cap is no longer avail able i...

Страница 9: ...C41 C43 0 1 uf monolithic 104 CR1 CR2 1N4148 p n may not be marked FL1 FL4 10 7 MHz matched xtal filter set FL5 455 kHz ceramic filter 20 kHz bw blue J1 RCA jack L1 L4 6 turns blue L5 10 7 MHz IF tran...

Страница 10: ...ched xtal filter set FL5 455 kHz ceramic filter 20 kHz bw J1 RCA jack L1 L4 2 1 2 turns red L5 10 7 MHz IF transformer p n 7A 691F or T1005 L6 L7 6 1 2 turns blue L8 L9 2 1 2 turns red L10 455kHz IF t...

Страница 11: ...gate mos fet static handling pre cautions required Q3 2N5770 Q4 not used Q5 2N5770 R1 R3 100K R4 R5 15K R6 680 R7 not used R8 68K R9 68K R10 100K panel mount pot R11 68K R12 100K R13 68K R14 330K R15...

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