.....obsolete user manuals, a lot of repair manuals, free service manuals, rare schematic diagrams, usefull service instructions, pdf books, how to repair instructions, lost operating manuals, old handbooks, tons of part lists, hidden service bulletins, your instruction books, informative repair tips, complete disassembly routines.....


What are you looking for?

extended search


ETO Ehrhorn Technological Operations ALPHA 374 Amplifier
Manufacturer:
Model:
ALPHA 374
Date:
unknown
Class:
Type:
SubType:

Information

1.1 GENERAL DESCRIPTION The ALPHA 3?4 is a high power linear Amplifier incorporating major advances in engineering and construction. It is rated for continuous service at maximum legal amateur power (FCC r u l e s ) in SSB, CW, FSK, and SSTV inodes. Exceptional power capability is achieved in combination with uniquely compact size and modest weight, through employment of a variety of advanced components including state-of-the-art Eimac ceramic/metal tubes, a power transformer with core of tape-wound, grain-oriented silicon steel (Hipersil®), and ETO's exclusive ducted-air full cabinet cooling system. The ALPHA 374 is capable of delivering normal power output, into a reasonably well-matched load, across all amateur bands for 80 through 10 meters without manual tuning adjustments. In addition, available manual controls also permit operation on out-of-band MARS and other special frequencies from 3*5 "to 30 MHz.

show more

Service Manual
Manual type:
Service Manual
Pages:
32
Size:
1.26 Mbytes (1322396 Bytes)
Language:
english
Revision:
Manual-ID:
Date:
unknown
Quality:
Scanned document, all readable.
Upload date:
2014 04 27
MD5:
209f7987dc044e63d7e68b0cdd98b800
Downloads:
946

Information

SECTI0N 1-1.1 GENERAL DESCRIPTION ... .la 1.2 SPECIFICATIONS AND RATINGS ... la SECTION 2 - INSTALLATION 2.1 UNPACKING ... 2a 2.2 TRANSFORMER INSTALLATION ... 2a 2.3 ELECTRICAL INSTALLATION ... 2"b SECTION 3 - OPERATION 3.1 CONTROL FUNCTIONS ... .3a 3.2 INITIAL Amplifier ADJUSTMENT ... 3e 3.4 FINAL ADJUSTMENTS, BANDPASS TUNING . . 3g 3.5 OVERLOAD PROTECTIVE FUNCTIONS ... 3h 3.6 REDUCING EXCITER OUTPUT ... 3h SECTION 4 - MAINTENANCE AND TROUBLESHOOTING ... 4a SECTION 5 - THEORY OF OPERATION ... 5a SECTION 6 - SCHEMATICS AND ILLUSTRATIONS ... 6a SECTION ? - PARTS L I S T ... 7a AMATEUR RADIO PRODUCTS WARRANTY ... Inside Rear Cover

show more

Add Comment

* Required information

Comments

No comments yet. Be the first!