Crystals

The small listing below is what we have to offer for this product category.

H.F. Amateur Radio Crystals

These precision ground Xtals are intended for use in home-brew circuits such as QRP transmitters and

receivers. The frequencies have been selected to be usable by all licensed amateurs that have code

privileges. The case used is the popular HC-49/u. All are series crystals with tolerance of+/- 25ppm

at 25º Centigrade and 30ppm in a temperature range of -30º to +60º Centigrade. See chart for

further information. Available one per package or in an kit of all six frequencies. (ESR=Equivalent

Series Resistance) HC49/u case has the same dimensions as HC-18 case. Case height: 13.46mm,

width: thickness: 4.65 and pins spacing is on 4.88 centers (pin diameter 0.48mm).

Popular Crystals

The package style is HC-49/u. Most circuits will specify if Xtal needs to be series or parallel.
Parallel resonant xtals are 20 pF loading capacitance (not important for series xtals).
Generally, series or parallel types are specified by the circuit and not interchangeable.