[R-390] Calibrator tone every 90 Khz
Roy Morgan
roy.morgan at nist.gov
Thu Jul 8 13:29:08 EDT 2004
At 04:22 AM 7/8/2004 +0000, hdalexander at att.net wrote:
>Hi All
>
>I have a Motorola R-390(non-A). The calibrator makes a tone approximately
>every 90 Khz., not every 100 Khz.. For example: 14000, 14090, 14180,14270,
>14360. Do any of you have any words of wisdom for me? Thank you in advance
>for any help.
Harold,
The crystal can't be off enough to create this situation. The 1 mc crystal
drives a 100 kc multivibrator oscillator to synchronize it to the crystal.
The multivibrator circit is not being synchronized and needs to be
adjusted, or have some components replaced.
Roy
- Roy Morgan, K1LKY since 1959 - Keep 'em Glowing!
7130 Panorama Drive, Derwood MD 20855
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