Dave,
"simple" and "effective" are often antonyms and do not occur together
except in the most simple cases. Assuring that no signals are
inadvertently injected into the K3 IF OUT jack does not sound like a
simple case. Bite the bullet and do a good job of isolating no matter
what you use - the performance of your K3 depends on it. Directly
connecting an $11 piece of equipment to a $1000 piece of equipment and
expecting no adverse consequences is a lot to be expected.
It *can* be done - the devil is in the details.
73,
Don W3FPR
Dave Martin wrote:
We'll have to get some ideas for a simple buffer that will provide
good isolation. Otherwise before long questions will be popping up
about spurious responses and noise with our new K3s.
On Dec 23, 2007 2:19 PM, Lyle Johnson <[EMAIL PROTECTED]> wrote:
Any one have any experience with the softrock and the K3...
PLEASE remember that you *must* have a high-reverse isolation buffer
between the K3 IF OUT jack and the Softrock antenna input. The Softrock
may have a huge spur at its carrier frequency and its mixer may not
suppress this adequately. So there is a potential coupling problem
(mixer) and radiation problem (shielding). The IF out of the K3 does
not have high reverse isolation characteristics, so you need to ensure
you do not couple a signal at the IF *into* the K3 through this connector.
73,
Lyle KK7P
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