R-140 AMPLIFIER MODIFIED OUTPUT PI NETWORK F1FRV Révision 2 du 16/10/2006
IT IS TO BE NOTED THAT L2 VALUES MUST BE ~1,5 TIME THE CALCULATED VALUES IN BANDS 1 & 2, DUE TO THE TOO LOW VALUE OF C30 (2200 pF) UNFORTUNATELY, NOT ENOUGH SPACE TO REPLACE BY HIGHER VALUE
Tube GU-78b or 2 x GU-43b Voltage 3 000 Volts on tube under load Current 2,000 Amps on tube under load 66,67 % Efficiency Minimum value of C1 0,0 pF Cgp 59,0 pF Tube grid / plate cap + parasitics (~34 pF) + FIXED 25 pF 15 kV VACUUM CAPACITOR FOR GU-78b ONLY Z OUT 50 Ohms Output impedance to antenna NO CAPACITOR OR 12 pF FOR 2 x GU-43b Class AB K 1,5 Output power ~ 4000 Watts IN PRACTICE, FOR BANDS 1 AND 2, OUTPUT CAPACITORS NEED TO BE Tube load resistance 1 000 Ohms ~10% MORE THAN CALCULATED THEORICAL VALUES Tube dissipation ~ 2 000 Watts 6M1: REMOVE C38 (100 pF) Frequence MHz
NEW 6M1 OUTPUT
Inductor µH
Output Cap pF
Cx 1.5 TO 3 MHz
L2
Cy
pF 1 RELAY FOR THE 470 pF
µH
pF
pF 6M1: 1 RELAY FOR THE 2200 pF
pF
11,04
917 3 TO 5 MHz
9,58
4011
100+347+470
6 TO 36
1500+2200+(100-1200)
100+420+1500+2200+(0-367)
4220-4587
F BAND 1 1,8 BAND 2
AMPLIFIER INDUCTOR
Input Cap pF
Q
AMPLIFIER
INPUT
OLD 6LV
OUTPUT
NEW 6M1
OUTPUT
3,5
9,47
372
5,69
1710
25 + 347
2 TO 12
1500+(100-1200)
100+1500+(0-367)
1600-1967
3,8
10,3
372
4,84
1748
25 + 347
2 TO 12
1500+(100-1200)
100+1500+(0-367)
1600-1967
4
10,83
372
4,39
1764
25 + 347
2 TO 12
1500+(100-1200)
100+1500+(0-367)
1600-1967
5 BAND 3
13,55
372 5 TO 10 MHz
2,83
1826
25 + 347 470 pF INSIDE BAND SW
2 TO 12
1500+(100-1200) 100+1500+(0-367) 6LV AND 6M1: 470 pF INSIDE BAND SW
1600-1967
5
8,93
225
4,21
1109
25 + 200
2 TO 12
356 + (100-1200)
100+356+420 +(0-367)
876-1243
7
12,5
225
2,19
1191
25 + 200
2 TO 12
356 + (100-1200)
100+356+420 +(0-367)
876-1243
7,1
12,65
225
2,13
1190
25 + 200
2 TO 12
356 + (100-1200)
100+356+420 +(0-367)
876-1243
7,3 BAND 4
13,02
225 10 TO 16 MHz
2,02
1196
25 + 200
2 TO 12
356 + (100-1200)
100+356+420 +(0-367)
876-1243
10
10
100
1,89
641
100
0.36 TO 2.3
(100-1200)
100+420+(0-367)
520-887
14
14
100
0,98
676
100
0.36 TO 2.3
(100-1200)
100+420+(0-367)
520-887
14,3
14,3
100
0,94
678
100
0.36 TO 2.3
(100-1200)
100+420+(0-367)
520-887
18 BAND 5
18
100 16 TO 30 MHz
0,60
691
100
0.36 TO 2.3
(100-1200)
100+420+(0-367)
520-887
18
9,5
25
1,10
334
25
0.36 TO 2.3
(100-1200)
100+(0-367)
100-467
21
11,1
25
0,82
346
25
0.36 TO 2.3
(100-1200)
100+(0-367)
100-467 100-467
24
12,6
25
0,63
351
25
0.36 TO 2.3
(100-1200)
100+(0-367)
25
13,2
25
0,58
355
25
0.36 TO 2.3
(100-1200)
100+(0-367)
100-467
26
13,7
25
0,54
356
25
0.36 TO 2.3
(100-1200)
100+(0-367)
100-467
27
14,2
25
0,50
356
25
0.36 TO 2.3
(100-1200)
100+(0-367)
100-467
28
14,7
25
0,47
357
25
0.36 TO 2.3
(100-1200)
100+(0-367)
100-467
29
15,3
25
0,43
360
25
0.36 TO 2.3
(100-1200)
100+(0-367)
100-467
30
15,8
25
0,41
360
25
0.36 TO 2.3
(100-1200)
100+(0-367)
100-467
NEW CAPACITORS
ORIGINAL ARRANGEMENT
http://www.nd2x.net/Russ-caps/cap-en.htm
470 pF 15 kV 40 kVAR K15U-1a N1500 DIA: 63 THK: 20 LENGTH: 24 470 pF 10 kV 25 kVAR K15U-1a N1500 DIA: 52 THK: 18 LENGTH: 22 470 pF 4 kV 20 kVAR K15U-1a N1500 DIA: 45 THK: 7.5 LENGTH: 14
1
FROM ANODE
8 2
3
4
5
6
7
C30
VARIOMETER L2
1500 pF 6 kV 25 kVAR K15U-2 N1500 DIA: 42.5 THK: 63 LENGTH: 66
2200pF TO ANTENNA
REPLACE C27 47pF 6 kV (ONLY !!!!) BY ANY 2 x 100 pF 6kV OR BY A 47 pF 10 kV 50 kVAR K15U-1a P100 DIA: 75 THK: 9.5 LENGTH: 15
(6LV ONLY)
1
5
1
5
1
NEW ARRANGEMENT
C26
C27
C28
C29
300pF 15kV VACUUM
47pF 6 kV 15 kVAR
12pF 10 kV VACUUM
100pF 15kV VACUUM
CALCULATIONS BASED ON 3000 V @ 2 A (1000 OHMS) OUTPUT POWER ~4000 WATTS
BAND 2: 3 TO 5 MHz Q = 9.5 3.5 MHZ Q = 10.3 3.8 MHZ Q = 10.8 4 MHZ Q = 13.5 5 MHZ
BAND 4: 10 TO 16 MHz 10 MHZ Q = 10 14 MHZ Q = 14 14.3 MHZ Q = 14.3 18 MHZ Q = 18 BAND 5: 16 TO 30 MHz 18 MHZ Q = 9.5 21 MHZ Q = 11.1 24 MHZ Q = 12.6 28 MHZ Q = 14.7 30 MHZ Q = 15.8
-46.5
-31.5
-43.5 -46
-30.5 -33.5
-42.5 -45.5
-34
-46
-31
-43
-34.5 -37
-47 -50
-30.5 -32.5 -34 -36 -36.5
-43.5 -45.5 -48 -50 -50.5
C37
2200pF 3 kV 22 kVAR
440pF (2 x 220 pF // 3.5kV / 8 kVAR)
1
FROM ANODE
8
C NEW
-34
C32
NEW ARRANGEMENT 2
3
4
5
6
HIGH VOLTAGE
C30
7
INSIDE BAND SWITCH STRAP IN BAND SWITCH BAND 3 ONLY
-27 V IN BAND 1
P-1D
BAND 3: 5 TO 10 MHz 5 MHZ Q = 8.9 7 MHZ Q = 12.5 7.1 MHZ Q = 12.6 7.3 MHZ Q = 13
HARMONICS 2 (>dB) 3 (>dB) -34.5
C31
5
100-1200
FOR MORE THAN 3000 WATTS OUTPUT ADD A FAN TO BLOW VARIOMETER AND BAND SWITCH CONTACTS
BAND 1: 1.5 TO 3 MHz 1.8 MHZ Q = 11
HIGH VOLTAGE
VARIOMETER L2 470pF 10kV 25 kVAR
2200pF TO ANTENNA (6LV ONLY)
1
5
1
5
C31 1
5
C NEW INSIDE BAND SW
100-1200
470pF 4 kV 20 kVAR
C NEW
C26
C27*
CNEW
C28*
C29
470pF 15kV 40 kVAR
300pF 15kV VACUUM
47pF 10 kV 50 kVAR
25pF 15kV VACUUM
25pF 15 kV VACUUM
100pF 15kV VACUUM
C32 2200pF 3.5 kV 20 kVAR
C NEW 1500pF 6 kV 25 kVAR
C28* 25 pF FOR GU-78b C28* 12 pF OR REMOVED FOR 2 x GU-43b
R-140 AMP GU-78b or 2 x GU-43b OUTPUT PI MODIFICATIONS
DATE: 16/10/06
STRAP IN BAND SWITCH BAND 1 ONLY
REV: 2
BY:
[email protected] DOC N°: AMATEUR RADIO
PAGE: 1/5
BE CAREFUL, TOP VIEW OF CONNETIONS OUT OF CIRCUIT, YOU CAN SEE FROM AMPLIFIER TOP, HAVE SYMETRICAL NUMBERING REGARDING THIS DRAWING. DO NOT CONFUSE !!!
NO HV ON TUBE WHEN ROTARY SWITCH IS MOVING BETWEEN 2 POSITIONS !!!!
TOP VIEW IN CIRCUIT TOP VIEW IN CIRCUIT
6
C29
C26
BAND 1
10 N/C 11
4
100pF
14 12
9
13 7
C30
2
8
5
3
1
300pF
2200pF
C27
HIGH VOLTAGE
= CONTACT PAD MAY BE NOT PRESENT 47pF
10
8
6
4
2
14
12
6
BAND 2
10 N/C
4
9
7
5
3
1
14 12
N/C 9
11
13 7
11
2
8
5
3
1
13
C32 14
4 10 N/C
2200pF
C37A C28
BAND 3
N/C 11
8 N/C 9
6
12
2
7
1
3
13
5
220pF
C37B 220pF
12pF
VARIOMETER L2 TO ANTENNA
FROM TUBE ANODE
C31 100-1200pF
14
BAND 4
10 N/C N/C 11
8 N/C 9
6 7
4 5
2 3
12 1 13
BAND 5 R-140 AMP GU-78b or 2 x GU-43b ORIGINAL SWITCHING OLD "6LV"
10 N/C 11
8 9
6 7
4 5
2 3
DATE: 16/10/06
14 1
REV: 2
BY:
[email protected] DOC N°: AMATEUR RADIO
12 13
PAGE: 2/5
BE CAREFUL, TOP VIEW OF CONNETIONS OUT OF CIRCUIT, YOU CAN SEE FROM AMPLIFIER TOP, HAVE SYMETRICAL NUMBERING REGARDING THIS DRAWING. DO NOT CONFUSE !!!
NO HV ON TUBE WHEN ROTARY SWITCH IS MOVING BETWEEN 2 POSITIONS !!!!
TOP VIEW IN CIRCUIT
C45
TOP VIEW IN CIRCUIT
100pF
C46
10
6
C29
C26
BAND 1
C30
C47
2200pF
2
14 12
11
13 9
220pF
4
8
100pF
7
5
3
1
300pF
C27
HIGH VOLTAGE
= CONTACT PAD MAY BE NOT PRESENT
100pF
47pF 10
8
6
4
2
14
12
10
6
4
2
14
8
BAND 2
12
11
13 9
11
9
7
5
3
1
7
5
3
1
13
C32 10
C37A C28
BAND 3
14
4 8
2200pF
6
12
2
220pF 7 11
1
3
9
13
5
220pF
C37B
VARIOMETER L2 TO ANTENNA
220pF
12pF
FROM TUBE ANODE 10
14 8
BAND 4 C48
11
6 7
4 5
2 3
12 1
9
C38
13
STRAY CAPS 47pF 3.5 kV 4 kVAR
C39
C40
100pF 3.5 kV 4 kVAR
220pF 3.5 kV
47pF 3.5 kV
RELAY 3 8 kVAR
RELAY 2 4 kVAR
100 3.5 kV 4 kVAR
C43
~50pF
RELAY 1
BAND 5
10 N/C 11
R-140 AMP GU-78b or 2 x GU-43b ORIGINAL SWITCHING NEW "6M-1"
8 9
6 7
4 5
2 3
DATE: 16/10/06
14 1
REV: 2
BY:
[email protected] DOC N°: AMATEUR RADIO
12 13
PAGE: 3/5
BE CAREFUL, TOP VIEW OF CONNETIONS OUT OF CIRCUIT, YOU CAN SEE FROM AMPLIFIER TOP, HAVE SYMETRICAL NUMBERING REGARDING THIS DRAWING. DO NOT CONFUSE !!!
C NEW 470pF 15 kV 40 kVAR
P-1D
NO HV ON TUBE WHEN ROTARY SWITCH IS MOVING BETWEEN 2 POSITIONS !!!!
TOP VIEW IN CIRCUIT
-27 V IN BAND 1
TOP VIEW IN CIRCUIT
10
C29
BAND 1
C26
100pF
11
13 7
3
1
= CONTACT PAD MAY BE NOT PRESENT
8
6
4
2
14
10
12
REMOVE STRAP 13-14 9
7
5
3
1
C32
13
11
C37A
6
14
2
7
3
9
1 13
5
INSIDE DIAMETER OF BAND SWITCH: 53 MM
C NEW 25pF 15 kV VACUUM
2200pF
BAND 2
12
4 8
C37B
5
47pF 10
REMOVED
14
C27*
1500pF 6 kV 25 kVA
220pF
2
300pF
2200pF HIGH VOLTAGE
11
4
12
9
C30
C NEW
6 8
10
BAND 3 (~356 pF ADDED AT OUTPUT)
C NEW 470 pF
14
4
4 kV 20 kVAR
8
6
2
7 11
9
470 pF
1
3
12
C NEW 10 kV 13 25 kVAR
5
C EQUIVALENT TO 200 pF
VARIOMETER L2 TO ANTENNA
220pF
C28 NEW
C31 100-1200pF
14 10
FROM TUBE ANODE 25pF 15 kV VACUUM ONLY FOR GU-78b NO C28 OR 12 pF FOR 2 x GU-43b
BAND 4
11
8 9
10
BAND 5
11
6 7
8 9
4 5
6 7
2 3
4 5
12 1
2 3
N/C 13
14
12
1 13
R-140 AMP GU-78b or 2 x GU-43b MODIFICATIONS OF PI FOR "6LV"
DATE: 16/10/06
REV: 2
BY:
[email protected] DOC N°: AMATEUR RADIO
PAGE: 4/5
470pF 15 kV 40 kVAR
P-1D
C45
BE CAREFUL, TOP VIEW OF CONNETIONS OUT OF CIRCUIT, YOU CAN SEE FROM AMPLIFIER TOP, HAVE SYMETRICAL NUMBERING REGARDING THIS DRAWING. DO NOT CONFUSE !!! 57 CONTACT PADS NEEDED
CNEW
NO HV ON TUBE WHEN ROTARY SWITCH IS MOVING BETWEEN 2 POSITIONS !!!! TOP VIEW IN CIRCUIT
TOP VIEW IN CIRCUIT
-27 V IN BAND 1
10
100pF
6
C46
C29
BAND 1
C26
C30
C47
2200pF
100pF
14
11
13 7
5
3
1
300pF
C27* = CONTACT PAD MAY BE NOT PRESENT
100pF
47pF 10
8
6
4
2
14
4
12 10
REMOVE STRAP 13-14 11
9
7
5
3
1
13
BAND 2
25pF 15 kV VACUUM
1500pF 6 kV 25 kVAR
8
11
12 2
6 7
1 13
5
INSIDE DIAMETER OF BAND SWITCH: 53 MM 10
4 8
P-1D
BAND 3 470 pF 4 kV 20 kVAR INSTEAD OF 220 pF
14
6
2
7 11
9
470 pF
1
3
12
C NEW
470pF
10 kV 13 25 kVAR
5
(~356 pF ADDED AT OUTPUT)
VARIOMETER L2
14
3
9
C NEW
C NEW
-27 V IN BAND 1
2
12
9
220pF
HIGH VOLTAGE
C EQUIVALENT TO 200 pF
C28 NEW
C 32 FROM TUBE ANODE
25pF 15 kV VACUUM ONLY FOR GU-78b NO C28 OR 12 pF FOR 2 x GU-43b
2200pF
C37A
220pF TO ANTENNA
REMOVED C37B
220pF
14
10 8
BAND 4
11
6 7
4 5
12
2 3
13
9
1
REMOVE C38
C48
C38 STRAY CAPS
47pF 3.5 kV 4 kVAR
4
8
C39
C40
C43
100pF 3.5 kV 4 kVAR
220pF 3.5 kV 3 8 kVAR
47pF 3.5 kV 2 4 kVAR
RELAY
RELAY
100 3.5 kV 4 kVAR
~50pF
BAND 5
10 N/C 11
8 9
6 7
4 5
2 3
14 1
12 13
RELAY 1
R-140 AMP GU-78b or 2 x GU-43b MODIFICATIONS OF PI FOR "6M-1"
DATE: 16/10/06
REV: 2
BY:
[email protected] DOC N°: AMATEUR RADIO
PAGE: 5/5
