[Elecraft] Kx3 rfi when power set to 0watt

Don Wilhelm donwilh at embarqmail.com
Fri Jul 21 17:41:30 EDT 2017


Eben,

I have not tried it, but I suspect that is normal with a receiver tuned 
to the same frequency and its antenna close to the KX3.
The KX3 is an SDR which means that it is using an internal oscillator 
tuned to the signal frequency.  That internal oscillator could be heard 
by a nearby receiver.

If you want to hear your own signal, work the KX3 into a dummy load at 
some medium power level and place the antenna for your monitoring 
receiver in whatever proximity to the dummy load that will give you an 
S-9 signal on that receiver - do not overdrive the receiver, or it may 
make 'funny noises'.

Keep trying to make contacts.  At this point in the sunspot cycle, 
propagation is poor on the higher frequency ham bands and 80 or 160 
meters are normally not very good for daytime contacts.  Try 40 meters 
during the day and early evening, and 80 meters after dark.

73,
Don W3FPR

On 7/21/2017 4:47 PM, Eben Bruyns wrote:
> I'm a new ham and this is my first radio...
> 
> So far I've managed to make contact on 80m but it leaves a lot to be desired.
> 
> While messing around I tuned a portable receiver to the same frequency
> as the kx3. I had the kx3 power set to 0 watts and keyed the mic. The
> receiver produced qrm every time I did this.


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