Equipment information

EICO Electronic Instrument Co. Inc. 720 Transmitter
Manufacturer
EICO Electronic Instrument Co. Inc.
Model 720
Date
Category: Radio, Communication
Group Transmitter
Description 9 0 - WATT CW TRANSMITTER
Information
                                    The new E1CO Model 720 is a very "clean" 90 watt CW, 80
through 10 meters bandswltching amateur transmitter. This
exceptionally conservative, stable high efficiency
electrical design is housed in a modern "low-silhouette"
cabinet to permit its use in normal living-room space. Some
important design features are: one-knob band switching;
one-knob power, tune and operate switch; final amp-
lifiergrid drive control without detuning oscillator;
oscillator keying for break in operation; a"novice limit"
calibration (75 watts) on the meter; matching antennas from
50 to lOOOohms. External plate modulation terminals permit
use as an AM phone transmitter delivering up to 65 watts
plate power input with the EICO Model 730 High Level
Universal Modulator-Driver.
FEATURES
1. Ideal for seasoned veteran or beginning novice,
2. 6146 final amplifier for full 90 watts cw input.
3. Completelysealed cabinet and careful by-passing and
choking of all input and output leads for effective TV1
suppression*
4. Protection of final amplifier is provided by a clamper
tube circuit, when a loss of excitation exists·
5· One knob band-switching —no coils to change.
6. Final amplifier grid drive control without detuning
oscillator·
7· Auxiliary power socket provided·
8. One knob power, tune, and operate switch.
9. Oscillator keying for break-in operation.
10. No shock hazard at key terminals

These manuals are available for the above equipment:

EICO Electronic Instrument Co. Inc. -- 720 -- Service and User Manual
File name Eico-7735-Manual-Page-1-Picture
Manual Type Service and User Manual
Pages 39
Size 4.60 Mbytes (4828173 Bytes)
Language english
Revision
Manual-ID/Number
Date
Quality Scanned document, all readable.
Upload date
MD5 17dc609ac431285a27e637ef91b527e4
Downloads 68 since 18 February 2016
Information
Eico-7735-Manual-Page-1-Picture
Start Free Download


EICO Electronic Instrument Co. Inc. -- 720 -- Cirquit Diagram
File name Eico-7736-Manual-Page-1-Picture
Manual Type Cirquit Diagram
Pages 2
Size 527.79 Kbytes (540455 Bytes)
Language english
Revision
Manual-ID/Number
Date
Quality Scanned document, all readable.
Upload date
MD5 000695149a13995762704288a1373b87
Downloads 50 since 18 February 2016
Information
Eico-7736-Manual-Page-1-Picture
Start Free Download


EICO Electronic Instrument Co. Inc. -- 720 -- Service and User Manual
File name Eico-7737-Manual-Page-1-Picture
Manual Type Service and User Manual
Pages 10
Size 936.76 Kbytes (959243 Bytes)
Language english
Revision
Manual-ID/Number
Date
Quality Scanned document, all readable.
Upload date
MD5 0b6d5e807e6d385797c6e8848c40c079
Downloads 50 since 18 February 2016
Information
Instruction Manual
Eico-7737-Manual-Page-1-Picture
Start Free Download


EICO Electronic Instrument Co. Inc. -- 720 -- Cirquit Diagram
File name Eico-7748-Manual-Page-1-Picture
Manual Type Cirquit Diagram
Pages 4
Size 583.38 Kbytes (597382 Bytes)
Language english
Revision
Manual-ID/Number
Date
Quality Scanned document, all readable.
Upload date
MD5 6bb5a13b7d6bfca87fc6b089eecab0fd
Downloads 47 since 18 February 2016
Information
Eico-7748-Manual-Page-1-Picture
Start Free Download


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