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Vectronics VEC-102K User Manual

Page 14

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14

Install: in modern kit building, this ward means

1. Select correct part
2. Insert it in its circuit board position, oriented correctly.
3. Solder all points
4. Trim or nip away excess wire lengths

K: abbreviation for 1000 ohms. (10K = 10,000 ohms).
KHz: KiloHertz, a thousand hertz
MHz: MegaHertz, a million hertz
Inductor: A coil or loop or wire used in electronic circuits.
Oscillator: see Regeneration
pF: "picofarad", a tiny unit of capacitance.
megohm: one million ohms
Regeneration, Regenerative: a method of boosting the performance of a simple detector

by feeding the detected signal back to the input of the detector for further amplifying.
This oscillation process must be controlled carefully through the use of a regeneration
control.

RF: Radio Frequency Energy, in contrast to audio or DC.
RTTY: "Radio Teletype"
SSB, Single Sideband: a method of voice transmission which eliminates the carrier

(whistle) which you hear in an AM broadcast if the regeneration control is turned too
far to the right.

Tolerance: the manufacturing accuracy for electronic (and other) parts. Tolerance ranges

from 20% down to better than 1% of the value marked on the part.

Toroid: a type of coil consisting of wire wrapped around a donut-shaped form, such as

L5 in this receiver.

Trimmer: a miniaturized variable resistor or capacitor used for occasional circuit

adjustments.

µF: "microfarad", the usual unit of capacitance.
µH: "microhenry", a unit of inductance.
WWV: U.S. government broadcasting service which provides exact time by voice

announcement each minute on very exact frequencies such as 5, 10, 15, and 20 MHz.