Informacje o sprzęcie

EICO Electronic Instrument Co. Inc. 722 Oscillator
EICO Electronic Instrument Co. Inc.
Modelu: 722
Data: 1962
Kategorii: Przyrządy pomiarowe
Grupa: Oscillator
Opis: Variable Frequency Oscillator

The model 722 excels in every requirement for a truly satisfactory VFO under the crowded conditions encountered today in the Ham bands. It provides full coverage of the five Ham bands from 80 to 10 meters in six ranges, the 10 meter band being covered in two ranges. Basic design features include a low-heat silicon diode doubler power supply, a buffer-multiplier output stage, a very large and easy-reading slide rule dial, and a velvet smooth and extremely reliable drive. Output is high enough to drive any modern transmitter on all bands from 80 through 10 meters. A lever type spotting switch is provided on the front panel. High stability is achieved by carefully coordinated electrical, mechanical, and thermal design. The Oscillator is an electron-coupled, series-tuned Clapp type, incorporating a stable, slug-tuned coil and temperature-compensating capacitors. Drift due to internal heating of the tank circuit has been made negligible by the choice of a high L to C ratio, which reduces the circulating tank current to a very low value. The buffer-multiplier stage performs as a "straight- throughTt buffer-amplifier on 80 meters, and a multiplier on all higher bands. It provides excellent isolation between the output load and the oscillator, as well as high output. A VR tube eliminates any effect due to line voltage variation. A rigid mechanical construction and the use of a double bearing on the main tuning capacitor avoids mechanical causes of frequency shift. Enclosure of the frequency-determining elements of the Oscillator in a shielding compartment provides both heat isolation and shielding from outside mechanical movements and body capacity.

Te Podręczniki są dostępne dla powyższego urządzenia:

Typ instrukcji: Serwis i User Manual Eico-7738-Manual-Page-1-Picture
Stron: 33
Rozmiar: 2.96 Mbytes (3102488 Bytes)
Język: Angielski
Podręcznik numer: 66371
Data: 1962
Jakość: Skanowany dokument, wszystko czytelne.
Data wysłania:
MD5: 66ef3fc745538c363346d4cf58fd4496
Pliki do pobrania: 183 od 18 luty 2016

Construction Manual The following Construction Manual has been written to carefully guide you through the construction of your kit. If you follow all the instructions implicitly, and work carefully without haste, you will be rewarded with many years of fine performance from this VFO and a personal inner satisfaction from a job well done.


Typ instrukcji: Serwis i User Manual Eico-7739-Manual-Page-1-Picture
Stron: 16
Rozmiar: 1.97 Mbytes (2060873 Bytes)
Język: Angielski
Podręcznik numer:
Data: 1962
Jakość: Skanowany dokument, wszystko czytelne.
Data wysłania:
MD5: 0b1bfbda7f2edfdb8fc1a02ec48a8a87
Pliki do pobrania: 194 od 18 luty 2016

SECTION I. GENERAL DESCRIPTION AND Page SPECIFICATIONS 1-1. Description ... 2 1-2. Specifications ... 2 SECTION II. CIRCUIT DESCRIPTION 2-1. General ... 2 2-2. Operation of Clapp Oscillator ... 2 2-3. Operation of Buffer-Multiplier ... 3 2-4. Power supply & Voltage Regulator ... 4 SECTION ΙΠ. OPERATION OF VFO WITH TRANSMITTER ... 4 SECTION IV. MAINTENANCE 4-1, General ... 5 4-2. Case Removal ... 5 4-3. VFO Adjustments and Calibration ... 5 SECTION V. EICO SERVICE POLICY Service Consultation ... 6 Parts Replacement ... 7 Factory Repair Service Local Repair Facilities Shipping Instructions . . SECTION VI. PARTS LIST


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