441
Item nr.


Ali E0330 Frequency Counter

Tune accurately.


Data for Ali E0330
ProductionChina, 2016.
Price was 5,77€.
BandsRange 1Hz to 50MHz.
Semi-
conductors
PIC16F628 controller, 3 transistors, 4 diodes, 5 displays.
CabinetNone.
PowerAC 5-9V.
DocumentsDescription.

The Design

Lack of tuning accuracy is one of the main shortcomings in common (superhet) receivers. The dial chord with mechanical pointer makes tuning a little bit of a guess. This device measures the oscillator frequency and displays its value, minus the IF. Unfortunately, my attempts to make this theory work, failed. The counter refuses to count high frequencies (higher than a MHz), and distorts the receiver. Later, my accurate tuning project became a succes with another counter, and i turned this one into a workshop tool.

Obtained4/2016 from Aliexpress.com.
Condition9.
DisposedStorage (inquire if interested to buy).

This Object

The unit is a small PCB that could be ordered for under 6 euro from AliExpress. I soldered everything together and got a small frequency counter, unfortunately not sensitive enough for the purpose I had in mind. But I mounted it in a small box, also incudinga 9V battery, and now it can help me align oscillators.

Here it works on the BFO for my Digilogue Tube receiver.


Part of Gerard's Radio Corner.
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