Equipment information:

Electronic Navigation Industries 300L Amplifier
Manufacturer:
Electronic Navigation Industries
Model: 300L
Date: 1969
Category: Radio, Communication
Group: Amplifier
Description: BroadBand RF Power Amplifier
Information:
                                    The Model 300L is a broadband solid state power amplifier,
covering the frequency range of 250 KHz to 110 MHz.
Three watts of RF power can be produced at the output, with
low harmonic and intermodulation distortion. The amplifier
will accept inputs of AM, FM, SSB, Pulse and other complex
modulations, over its entire frequency range. The 40 dB gain
of the unit permits it to be driven to its full power output
by any signal or sweep generator capable of supplying a
minimum -5 dBM (.13 volts) signal level into its 50 ohm
input. Virtually all commercial signal and sweep generators
are capable of supplying this signal.
The Model 300L operates over its entire bandwidth without
tuning or other adjustments. It is capable of supplying
useful power output up to 150 MHz, at reduced gain.
It is unconditionally stable and will not oscillate for any
possible combination of source and load impedances. This
feature is especially useful where highly reactive loads are
encountered. Reflected power due to output load mismatch is
absorbed in the amplifier.
The Model 300L is protected against failure due to output
load mismatch and/or overdrive. The unit will withstand a
+20 dB overdrive (input signal of +15 dBM), for all output
load conditions including both short and open circuit loads.

These manuals are available for the above equipment:

Electronic Navigation Industries -- 300L -- Service and User Manual
File name: ENI-7550-Manual-Page-1-Picture
Manual Type: Service and User Manual
Pages: 21
Size: 549.06 Kbytes (562235 Bytes)
Language: english
Revision:
Manual-ID/Number:
Date: 1969
Quality: Scanned document, all readable.
Upload date:
MD5: 14b1db7f544c1e7114a769b57666b1f6
ed2kID: d6800f0c7744cf3e183940bc902158d5
Downloads: 21 since 25 January 2016
Information:
CHAPTER 1 - GENERAL INFORMATION
1.1 INTRODUCTION
1.2 SPECIFICATIONS
1.3 INSTRUMENT IDENTIFICATION
CHAPTER 2 - OPERATION
2.1 INTRODUCTION
2.2 MAINS VOLTAGE SETTING
2.3 MAINS FUSE RATING
2.4 RACK INSTALLATION
2.5 OPERATION
CHAPTER 3 - PRINCIPLES OF OPERATION
3.1 BLOCK DIAGRAM DESCRIPTION
CHAPTER 4 - MAINTENANCE AND PERFORMANCE TESTS
4.1 INITIAL CHECK
4.2 GAIN AND GAIN VS FREQUENCY
4.3 CALIBRATION
4.4 RF POWER OUTPUT
4.5 MEASUREMENT OF HARMONICS
4.6 TROUBLESHOOTING AND REPAIR
4.7 MAINTENANCE
4.8 PRECAUTIONS
CHAPTER 5 - SCHEMATICS AND PARTS LIST
5.1 POWER DISTRIBUTION SCHEMATIC
5.2 RF AMPLIFIER SCHEMATIC
5.3 PARTS LIST
5^4 GLOSSARY OF ABBREVIATIONS
5,5 LIST OF MANUFACTURERS
ENI-7550-Manual-Page-1-Picture
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