[FoxHunt] active attenuator

[John Munsey]

Mike, I would like the details for this project.  Also, if you can send it
to me in completed form I have access to Acrobat and could get it put in
PDF format so that it would be easy to post and/or email to others.

Thanks for the good work.

At 07:09 PM 3/24/2002 -0800, you wrote:
>
>I have developed an 'improved' active attenuator for our local club.
>It is simple to build, using one CMOS IC, a crystal, single diode mixer
and a pot.
>The improvement is mainly the addition of a 2 Hz oscillator gating the 1 MHz
>oscillator.  This really helps to distinguish between an unmodulated
signal and the
>noise floor in an FM receiver.
>
>I could post it if there is much interest.
>
>Mike
>WB6TMH
>
>
>> >de Rick K5RIC wrote:
>
>>
>> >Does anyone have any circuit updates to the Active Attenuator circuit
from the
>> >one in 11/92 QST? Im going to give this a try soon. Has anyone tried
different
>> >type diodes, or even used a double balanced mixer such as an SBL(over
kill?). I
>> >would also think you could use a different style oscillator such as a
74C04 and
>> >a 500 K or 1M ceramic resonator. Any thoughts?
>
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John Munsey,  KB3GK
Ormond Beach, FL 32174