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Table 5-1. Tubes and Semiconductors.

 

SYMBOL FUNCTION TYPE
Vl5A
 

V15B

Vl6A

V16B
 

Vl7A
 

V17B
 

V301
 

 

AVC Rectifier
(both diodes)

product detector

first af amplifier

Receiver af output
amplifier

ALC rectifier (both
diodes)

Second receiver
mixer

Varlable-frequency
oscillator

6BN8
 

6BN8

6EB8

6EB8
 

6BN8
 

6BN8
 

7543

SYMBOL FUNCTION TYPE
CR1-
CR4

CR5

CR6
 

CR7

CR8

CR9

CR10

CR11
 

CR301

Balanced modulator
matched quad

Receiver rf trimming

Calibrator harmonic
generator

Screen voltage gate

ALC static bias control

Receiver mixer isolator

Cathode follower Isolator

Rf ampililer AGC
time-constant switch

Dlode switch for C308

FA4000
 

HC7001

1N34A
 

1N1490

1N458

1N458

1N1490

1N458
 

1N34A

 

5.5 AVAILABLE ACCESSORIES

Table 5-2 Available Accessories

 

ITEM FUNCTION COLLINS PART NUMBER

136B-2 Noise Blanker
 
 
 
 

312B-3 Speaker

312B-4 Station Control
 

312B-5 Station Control
 
 

312C-1 Speaker

312C-2 Speaker

312C-3 Speaker

351D-2 Mobile Mount

351E-4 Mounting Plate

351R-1 Rack
 
 

351R-2 Rack NMount

Blanks nolse pulses when the noise components present on the antenna have energy distribution In the 40-MHz portlon of the spectrum and when the noise pulses have a repetition rate not In excess of 100 000 pulses per second.

Statlon speaker

Speaker, phone patxh, directional wattmeter, and station control switches.

Combination of feattures and functions of: 3l2B-4 Witb a vfo to permit separate transmit and receive frequencies

Single rack-mounted speaker

Two rack mounted speakers.

Three rack-mounted speakers.

Mount for KWM-2 or KWM-2A mobile operation.

Mount KWM-2 or KWM-2A on tabIe or bench.

Mounts one KWM-2 or KWM-2A. Front panel edges are slotted to fit standard relay rack centers Grey finish 8-3/4 Inehes high by 13-3/16 Inches deep.

Mounts one 312B-4, 312B-5, ot 516F-2. Front pannel edges are slotted to fit standard relay rack centers. Grey finish 8-3/4 Inches High by 13-3/16 Inches deep

522-1661-00
 
 
 
 

522-166-00

522-1167-00
 

522-1168-00
 
 

522-3526-00

522-3527-00

522-3528-00

522-1726-00

522-1482-00

522-2665-00
 
 

522-2666-00

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