[time-nuts] Broken Ovenaire OSC 85-50
J. L. Trantham
jltran at worldnet.att.net
Sat Jul 4 12:25:25 UTC 2009
Well, I actually did increase the input voltage so that the Oscillator Board
saw 5 VDC instead of about 2.5 VDC and it made little difference in the
output amplitude, perhaps 10% or less. I am sorry, but my 'scientific
method' has not regenerated itself sufficiently to drive me to make careful
notes.
Joe
-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of WB6BNQ
Sent: Friday, July 03, 2009 9:20 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Broken Ovenaire OSC 85-50
I agree with Warren. The VCC seems way too low. Interestingly, noone else
seems to think so, or did not notice it.
Bill....WB6BNQ
WarrenS wrote:
> Here is my two cents worth
> 20 mv output, sure sounds like something is broken.
> It should be fixed before it is modified.
> The 2.49 volts on the Red input voltage seem LOW, More Vcc maybe. The
> "Grn" labeled wire, FreqCtrl input should be about 1/2 VCC for
> testing. If you do 'need' to modify the gain, It would seem better to
> bypass the 470 ohm resistor with a cap in series with the 47 ohms.
>
> ws
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