Oscillator with frequency stabilizing circuit and method of constructing same

A frequency source stabilizing apparatus comprising:

• a substrate having a first surface and a second surface;
• a temperature compensated crystal oscillator circuit disposed upon said first substrate surface;
• a heating circuit for maintaining the temperature of a crystal oscillator within a predetermined temperature range and outside of activity dip temperature ranges, said heating circuit disposed upon said second substrate surface;
• substrate supporting means for supporting said substrate, said temperature compensated oscillation circuit and said heating element;
• and
• an enclosure housing said substrate and said circuits disposed thereon wherein said substrate, said temperature compensated crystal oscillator circuit and said heating circuit are not in contact with any portion of said enclosure.

A method of stabilizing the frequency of a crystal oscillator, comprising the steps of:

• providing a substrate having a first surface and a second surface;
• disposing upon said first substrate surface, a temperature compensated crystal oscillator circuit;
• disposing upon said second substrate surface, a heating circuit for maintaining a temperature of a crystal oscillator within a predetermined temperature range and outside of activity dip temperature ranges;
• providing substrate supporting means for supporting said substrate, said temperature compensated crystal oscillation circuit and said heating element;
• and
• housing said substrate and said circuits disposed thereon within an enclosure wherein said substrate, said temperature compensated crystal oscillator circuit and said heating circuit are not in contact with any portion of said enclosure.

An emergency position indicating radio beacon comprising:

• an electrical power supply;
• circuit means for generating radio frequency signals for broadcast;
• said circuit means including a temperature compensated frequency source and heating means for maintaining a temperature of said frequency source within a predetermined temperature range and outside of activity dip temperature ranges;
• an enclosure for housing said circuit means and said electrical power supply;
• and an antenna connected to said housing and electrically coupled to said circuit means for transmitting said radio frequency signals.