[Elecraft] KX3 Amp

Geoffrey Mackenzie-Kennedy lx2ao at pt.lu
Tue Mar 26 10:59:33 EDT 2013


Hello Igor,

If you want to measure (with useful accuracy) the level of the IMD products 
generated by your KX3 and HLA 300 Plus, all that you would need in addition 
to your TS590 is a Two Tone (AF) Generator, an AF Spectrum Analyser and your 
computer.  If you Google Tcube you will find a program called Tcube, which 
can be downloaded at no cost.  This program will provide you with a Two Tone 
Generator and an AF Spectrum Analyzer.  The frequency range covered by the 
generators and the Spectrum Analyser is 0 to 10 kHz.  I have found this 
program to be useful when running 3 or 4 tone tests, two of the tones from a 
"hardware" generator.

73,

Geoff
LX2AO


On March 25, 2013 at 7:14 PM, Igor Sokolov wrote:

>I do not have equipment to accurately measure IMD of my combo of KX3 and 
>HLA 300 Plus. Having said that I drive HLA 300 with 5 w from KX3. It gives 
>me 200 + watt on all the bands. Listening to the radiated signal using 
>TS590 and different antenna reveals that the occupied bandwidth is within 
>the same boundaries which I  have determined by transmitting 100 W from my 
>K3. Therefore I assumed that IMD of the above mentioned combo is no worth 
>then 30db.
>
> 73, Igor UA9CDC



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