[Elecraft] Re: Amplified Speakers for KX1 (and other rigs)

[DYARNES@aol.com]

The Sony battery powered speakers sound like a very good compliment to the 
KX1.  Don't know what the price is though.  In my case, and since I probably 
would just use headphones when going portable, I had hooked up a very small set 
of amplified speakers I found at Big Lots.  Actually, there were a couple of 
different models available.  They are somewhat bigger than the Sony speakers 
though, and run off AC.  But the price was sure right--6 bucks!  They work great 
too.  Check 'em out!

Another thing I do once in a while is to hook up one of those little FM 
transmitters (I use the Irock, which is pricey but pretty effective) to the KX1's 
output, then wear an FM radio headset, or any portable/pocket FM receiver for 
that matter.  Then you can boost the audio using the FM receiver, and you 
aren't tethered to the rig.  That way, when you are in "receive" mode, you can 
stretch a bit.

Regarding the wattmeter accuracy thing, I have an OHR WM-1 which I just 
recalibrated, so hopefully it is close.  I have a couple of other wattmeters that 
are "supposed" to be 5% plus or minus, and they seem to agree with my readings 
on the WM-1.  But I don't have anything of truly certifiable accuracy.  For 
those who want to really do it right, below is some info Gary (at Elecraft 
support) sent me if you have a good O'scope:

Here are some pk-pk RF voltages, and the corresponding power level across a 
50 ohm load:

1w      20vpp
2w      25.28Vpp
3w      34.64Vpp
4w      40Vpp  
5w      44.7Vpp

Hope this info helps somebody.

Dave W7AQK


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