Elecraft

Softrock as K3 Panadaptor: Buffer Amp Needed?

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ALAN GARD

Softrock as K3 Panadaptor: Buffer Amp Needed?

I've seen differing views on the need to use a buffer amp. in this application. Has anyone out there used Softrock successfully without it? Did you have to take any special precautions to make it work properly? I'm intending to use a 32.768 MHz /4 crystal.

Thanks in advance for any replies.

73 de Alan G4LWA (K3 # 1805)

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Don Wilhelm-4

Re: Softrock as K3 Panadaptor: Buffer Amp Needed?

Alan,

The Softrock receiver will work just fine with or without buffer amplifier.
It will be the K3 that will suffer because there will be a strong signal
injected into the 8 MHz IF (from the softrock local oscillator) which
can activate the AGC and otherwise degrade the K3 receive characteristics.

What that means is that you can try it out without the buffer amplifier,
but I would not leave it permanently connected without the amplifier.
There is also a gain consideration for the buffer amp to increase the K3
IF output level.

73,
Don W3FPR

ALAN GARD wrote:

> Hi
>
> I've seen differing views on the need to use a buffer amp. in this
> application. Has anyone out there used Softrock successfully without
> it? Did you have to take any special precautions to make it work
> properly? I'm intending to use a 32.768 MHz /4 crystal.
>
> Thanks in advance for any replies.
>
> 73 de Alan G4LWA (K3 # 1805)
>
>