Eico grid dip meter manual

Eico Grid dip meter, 7 plug-in coils. According to the manual "capable of keying a CW transmitter with perfect machine-like Morse Code at speeds ranging from . although called a grid dip meter is technically a transistor DIP meter, the name grid dip is historical and comes from the earliest meters of this type using valves, where the dip in a grid voltage/current was measured to indicate resonance. This name has historically been applied to instruments that do this function. Dip oscillator. The EICO GDO was one of the more successful tube-type, AC line powered, www.doorway.ru had a frequency range of kHzMHz in 8 overlapping ranges. Even though it was a kit, it-as with all other KIT GDOs I am aware of-used pre-wound plug-in coils wound to a % accuracy on polystyrene forms.. A GDO is basically a wide-range oscillator with a meter in the grid-return line to indicate when the.

I'm not certain what coil you are using, but a grid dip meter is useful only on RF tuned circuits. Try it in an IF circuit; if the IF is khz, you should see a dip (lower current) at that frequency if it is tuned properly. They are useful to determine the frequency of IF transformers if they are unmarked. My EICO seems to work OK. A GRID dip meter is one of those must. pieces of equipment for the ham shack. By building one you can save money and become completely familiar with the unit at the same time. The Eico Model comes in kit form and sells for $ It has a band coverage of kc to me, with all coils pre-wound and calibrated. The unit is very small. The Grid Dip Meter: Forgotten Instrument. It used to be a major rite of passage for a hardware hacker to acquire an oscilloscope. Until recently, new instruments were rarely in normal people’s.

De EICO GDO (Grid Dip Oscillator) was een van de meer succesvolle, uit het lichtnet gevoede, buis-types. Het instrument heeft een frequentiebereik van. It's in good used condition with normal wear, it has slight bent and wear to the cover, pencil marks on the inside. The EICO GDO uses a planetary drive on the tuning capacitor. It uses a 6AF4A in a Colpitts oscillator circuit. It is transformer-operated.