K3 -"Reverse power protection"

[Gordon & Lois Duff]

I want to use my SDR1000 with my K3.  First, I want to share the same
antenna via a splitter on the RX antenna connection, and second, I want to
use the SDR1000 as a panadapter connected to the K3 IF out.   I have the low
power SDR1000 which produces ½ watt on transmit, I think.  My question is
can the K3 withstand ½ watt on these connections without harm should I
accidentally put the SDR1000 into transmit?   If not ½ watt, then how much
power can be applied before harm is done?

 

Gordon, KA2NLM


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[KK7P]

> ...I want to
> use the SDR1000 as a panadapter connected to the K3 IF out...
> Can the K3 withstand ½ watt on these connections without harm should I
> accidentally put the SDR1000 into transmit?

DO NOT transmit into the Rx IF out connector!

The SDR10000 can output 1W P.E.P.  (+30 dBm).  That will probably cause
damage.

+0 dBm probably won't damage things. I create signals this strong with
my sig gen doing rx testing.

73,

Lyle KK7P

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