Johnson Viking Thunderbolt Amplifier
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Model:
Viking Thunderbolt
Date:
0
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Description:
Information
The Viking Thunderbolt is a self contained radio frequency
power Amplifier capable of CW and AM, SSB or DSB linear
operation over a continuous frequency range of 3.5 to 30
megacycles. The Amplifier employs two Type PL175A pentode
tubes in parallel, bridge neutralized, which permits power
inputs of 2000 watts P.E.P. linear with suppressed carrier,
800 watts AM linear, and 1000 watts class C continuous wave.
Drive requirements are approximately 10 watts from a well
regulated exciter for class AB2 linear (SSB and AM)
operation and 20 watts for class C (CW) operation. TVI
suppression, spurious filtering, rigorous shielding, and
parasitic oscillation suppression are included in the
Amplifier design.
The complete Thunderbolt Amplifier including high voltage,
regulated screen and regulated bias power supplies is
contained in a cabinet 21" wide x II 5/8" high x 16
7/8"deep. The total weight is 120 pounds.
The Thunderbolt is fully protected by fuses and also by a
series screen limiting resistor which limits the screen
dissipation to a safe value even in the event of a complete
bias failure.
Manual type:
User Manual
Pages:
35
Size:
2.00 Mbytes (2095290 Bytes)
Language:
english
Revision:
Manual ID:
Date:
Quality:
Scanned document, all readable.
Upload date:
2014 03 01
MD5:
c2b35a48f4529d8800525a0bc88ab3bd
Downloads:
1268
Information
A. INTRODUCTION
Page
B. INSTALLATION
1. Unpacking and Inspection
2. Removal of Amplifier from Cabinet
3. Transportation Claims
4. Missing Parts Claims
5. Power Transformer Installation
6. Tube Installation 3
7. Hate Suppressor Installation 3
8. Neutralization 3
9. Ground Connections 3 10. Exciter and Thunderbolt
Interconnection 4
a. Pacemaker 4
b. Ranger or Viking II or Similar Exciters 5
c. HT-32 6
d. 20A 8
e. Navigator 9
C. METERS, CONTROLS AND FUSES 10
D. ADJUSTMENT AND OPERATION 11
1. CW Class C Operation 11
2. Linear Operation 12
a. Loading 12
b. Linear Operation Loading Procedure 13
c. Exciter Tuning 14
(1) Pacemaker 14
(2) Ranger, Viking II or Similar Exciters 15
(3) HT-32 16
(4) 20A 17
PARTS LIST 19-22