Portable Crystal Checker and RF source

A battery driven Colpits oscillator that can be used as a quick 'Go - No Go' indication of crystal oscillation. An LED lights to indicate a good crystal. On board output jack allows easy connection to a frequency counter, oscilloscope or spectrum analyzer for frequency monitoring.

Designed to allow bench or field testing of crystals, giving the service tech or hobbyist alike the ability to determine a crystals ability to oscillate and the frequency within 0.005%+/-

A small footprint unit fully self contained, battery powered, Push terminal connections and a highly versatile output jack.

Operation details 1. A battery snap suited to a regular 9 volt battery is included and attached to the Push terminals marked 9 VDC, with the red or plus lead in the terminal nearest the top edge of the board. Alternatively a bench 12 volt supply may also be used.

1. The crystal under test is either directly connected to the screw terminals marked test, or a pair of clip or test leads can be screwed here and used to connect to the crystal under test. This is particularly suited to testing larger footprint crystals such as the FT243 case style.

2. With power applied and a crystal connected the onboard LED lights if the crystal oscillates, indicating that the crystal is functional; no led lighting indicates the crystal has an issue or is broken. A crystal is included in this sale to allow initial testing.

3. Attaching a suitably terminated lead to the RCA connector allows the frequency of the crystal oscillator to be monitored on a frequency counter or be applied to the antenna coax port on a radio