[Elecraft] KX3 oscillator temperature

[Wayne Burdick]

The synthesizer I.C.'s current drain, and thus its operating temperature, vary in direct proportion to operating frequency.

73,
Wayne
N6KR

On Aug 20, 2014, at 11:50 AM, on4iq <on4iq at telenet.be> wrote:

> I recently started extensive temperature testing on the KX3 to get more data
> on dissipation and stability.
> For starters stability in RX. KX3 in original setup. Serial below #2000
> I noticed that for a steady ambient temperature the oscillator temperature
> varies with frequency used.
> Has anyone else similar observations? Temp taken after long (2h) warm up
> For example: 
> 50MHz: 39°C 
> 28MHz: 37°C
> 7MHz: 36°C
> 
> PA in RX remains 28°C
> Any feedback is welcome.
> 73 Johan