Equipment information

Ameco American Electronics Corp. VFO-621 Oscillator
Manufacturer
Ameco American Electronics Corp.
Model VFO-621
Date 1968
Category: Radio, Communication
Group Oscillator
Description VARIABLE FREQUENCY OSCILLATOR
Information
                                    he Ameco VFO-621 is a Variable Frequency Oscillator to be
used with the Ameco TX-62 Transmitter or any other 50, 144
or 220 Me. transmitter that is designed to operate with 8,
12 or 24-25 Me. crystals.

The Ameco VFO-621 uses the superior HETERODYNE principle.
The variable frequency oscillator operates at a low
frequency. It is then heterodyned to 24-26 Me. by means of a
crystal controlled oscillator and mixer. This permits
operation of the oscillator with one-third of the usual
multiplication. The lower multiplication, combined with the
lower oscillator frequency, permit a STABILITY and keying
quality almost non-existent on the three VHF bands.

There is no chirp with keying. The warm-up time is very
short, as both oscillators use transistors.

The internal AC power supply is Zener Diode regulated. The
dial scale is calibrated for 50-52, 144-148 and 220-225 Me.
The scales are long, open and easy to read. For mobile
operation, terminals are provided for external DC supplies
(6 or 12 volts for the filaments and 100 to 150 volts for
the plates).

The cabinet height and finish match the TX-62 transmitter.
It is 6" high, 5" wide and 7-1/2" deep.

These manuals are available for the above equipment:

Ameco American Electronics Corp. -- VFO-621 -- Service and User Manual
File name Ameco-5878-Manual-Page-1-Picture
Manual Type Service and User Manual
Pages 6
Size 612.20 Kbytes (626889 Bytes)
Language english
Revision
Manual-ID/Number 4202 1613 101
Date September 1968
Quality Scanned document, all readable.
Upload date
MD5 ea0dec83281fd54b504ad1cfa903e09b
Downloads 178 since 28 April 2014
Information
Ameco-5878-Manual-Page-1-Picture
Start Free Download


Ameco American Electronics Corp. -- VFO-621 -- Service and User Manual
File name Ameco-9645-Manual-Page-1-Picture
Manual Type Service and User Manual
Pages 6
Size 1.19 Mbytes (1251868 Bytes)
Language english
Revision
Manual-ID/Number 4202 1613 101
Date 01 September 1968
Quality Scanned document, all readable.
Upload date
MD5 5d7798935b5bddb9d77542904c155640
Downloads 5 since 14 October 2017
Information
Ameco-9645-Manual-Page-1-Picture
Start Free Download


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