Apparatuur informatie

Drake L-4 Versterker
Fabrikant:
Drake
Model: L-4
Datum:
Categorie: Radio, Communicatie
Groep: Versterker
Beschrijving: Linear Amplifier
Informatie:
                                    The R L DRAKE Model L-4 Linear Amplifier offers continuous
2000 watt PEP-SSB, and 1000 watt D.C. CW, AM and RTTY
operation covering the ham bands 80 through 10 meters. All
frequencies 3.5 to 30 mHz may be covered with some retuning
of the input coils.

The L-4 Linear Amplifier was designed to match the TR-3 and
TR-4 Transceivers and T-4/T-4X Transmitters in appearance
and drive requirements to run the maximum legal input power.

The L-4 uses two 8163 or two 3-400Z zero bias triodes in a
Class B grounded grid circuit configuration that utilizes
R.F„ negative feedback for lowered odd order distortion
products.

A transmitting AGC circuit controls the exciter gain to
allow the highest average power without peak clipping. An
internal changeover relay feeds the antenna through when the
L-4 is turned off. A pair of relay contacts bias the output
tubes to cutoff, eliminating unwanted heat and diode noise
when receiving.

The output tubes are forced-air cooled by a very quiet low
velocity, high volume internal blower. Two taut-band
suspension meters indicate plate current, grid current,
plate voltage, and relative R„F. output power.

The separate solid state power supply requires no warm up
period and provides excellent dynamic and static voltage
regulation.

Deze handboeken zijn beschikbaar voor de bovengenoemde apparatuur:

Drake -- L-4 -- Service-en gebruikershandleiding
Bestandsnaam: Drake-9257-Manual-Page-1-Picture
Manueel de Type: Service-en gebruikershandleiding
Pagina 's: 28
Grootte: 11.31 Mbytes (11856855 Bytes)
Taal: Engels
Herziening:
Handleiding-ID/Number:
Datum:
Kwaliteit: Gescande document, lezen deels slecht, deels niet leesbaar.
Uploaden datum:
MD5: 771c37bb09e2a72c21295ad0b9e7ebe5
Downloads: 13 Sinds 09 augustus 2017
Informatie:
GENERAL SPECIFICATIONS------------------------------------ 1

DESCRIPTION------------------------------------------------ 3

INSTALLATION
INSTRUCTIONS------------------------------------------------------------------4

A.	Unpacking
----------------------------------------------------------------------------------------4

B.	Tube and Chimney
Installation--------------------------------------------------------4

C.
Location--------------------------------------------------------------------------------------------5

D.	Power Requirements - 115 V and 230 V
Operation----------------------5

E.	Jumper Connection
Diagrams--------------------------------------------------------6

F.	Low Pass
Filter--------------------------------------------------------------------------------7

G.	Antenna
Requirements----------------------------------------------------------------------7

H.	Ground
Requirements----------------------------------------------------------------------7

I.	Exciter Requirements
----------------------------------------------------------------------7

J. Transmitting
AGC------------------------------------------------------------------------------8

K.
VOX------------------------------------------------------------------------------------------------------8

L. Initial Connection
Diagrams----------------------------------------------------------9

M. Viewing Angle
Options--------------------------------------------------------------------10

TUNING PROCEDURE----------------------------------------- 11

A.	CW, RTTY--------------------------------------------- 11

B.	SSB, AM----------------------------------------------- 13

OPERATION---------------------------------------------------14

A.	CW, RTTY----------------------------------------------14

B.	SSB--------------------------------------------------- 14

C.	AM----------------------------------------------------15

THEORY OF OPERATION-------------------------------------- 16

SERVICE DATA-----------------------------------------------17

A.	Amplifier-----------------------------------------------17

1.	Removing Top Cover---------------------------------17

2.	Removing Bottom Cover-------------------------------17

3.	Removing Front Panel---------------------------------17

4.	Cleaning Amplifier Compartment-----------------------17

5.	Tube Replacement-----------------------------------18

6.	Input Switch Drive Belt Replacement-------------------18

7.	Troubleshooting ------------------------------------ 18

B.	Power Supply------------------------------------------- 19

1.	Circuit Breaker Reset
--------------------------------------------------------------19

2.	Removing Bottom Cover
------------------------------------------------------------19

3.	Removing Top Cover---------------------------------19

4.
Troubleshooting------------------------------------------------------------------------19

ALIGNMENT------------------------------------------------- 21

A.	Input Coil Adjustment ----------------------------------- 21

B.	Meter Adjustment--------------------------------------- 21

C.	Knob Pointer Alignment----------------------------------- 22

SCHEMATICS----------------------------------------------------
Drake-9257-Manual-Page-1-Picture
Start gratis downloaden


Comments (0)

No comments yet. Be the first!

Add Comment

* Required information
1000
Enter the word table backwards.
Powered by Commentics