I think you basically ended up with an amplitude modulated (AM) signal with
10MHz+1 as a carrier and 1Hz as side-band. I'll be trying something like this
soon. If you use low pass filter at near audio frequency, it should eliminate
this.
---------------------------------------
(Mr.) Taka Kamiya
KB4EMF / ex JF2DKG
On Thursday, July 23, 2020, 4:50:13 PM EDT, Richard (Rick) Karlquist
<[email protected]> wrote:
Are you filtering out the 10.000001 MHz image?
Rick N6RK
On 7/23/2020 11:01 AM, [email protected] wrote:
> Hi,
>
> I'm feeding 5.0 MHZ and 5.000001MHz into an HP10514A mixer.
>
> A buffer and a 12dB attenuator feed each input and a 50 Ohm buffer amp
> (10Mhz) is on the output.
>
> I get a nice sine output but get the 1Hz as amplitude variations.
>
> Playing with input levels I can minimize the variations but the best I
> can get is a 3.2 V P-P with a .4 V P-P amplitude modulation.
>
> Are there mixer schemes I can use that will eliminate the amplitude
> variations?
>
> Cheers,
>
> Corby
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