[Boatanchors] Making Stable Inductors for 2 MHz

[Drew P.]

John wrote:

(snipped)

"I'm working on a LORAN-A simulator for the DAS-1 on the MASSACHUSETTS and
have a design question.

Background:  LORAN-A transmitted 30-40 uS pulses, carefully times, on
about 1800 to 2100 KHz. I have the timing =ssues solved.

'm now looking at building a stable, keyed oscillator in the above
frequency range. My intention is to use a SS Hartley or Colpitts."

It may sound strange, but in a way, I miss the rattatattatattatattatatta of the old LORAN-A signals I used to hear in that frequency region years ago, on old tube receivers.  It had an almost mesmerizing quality (2 transmitters audible simultaneously) that lent some of the "character" possessed by that portion of the spectrum.

30 to 40 uS is about 60-80 cycles of 2 Mc (not Hertz, this is old technology). I assume that by "keyed oscillator", you mean to say that you'd be switching the DC power to the oscillator on and off.  Would a thusly keyed oscillator start quickly enough, especially a crystal controlled oscillator?

Drew