[Elecraft] [KX3] Transverter Band TX output

[Jimk8mr at aol.com]

More info:
 
I have the ATU installed in the KX3. Even with the KX3 directly connected  
to a good 50 ohm load, running an autotune on the XV bands (28 MHz) causes 
lots  of relay chatter in the radio, and a displayed SWR of 25.4 that does 
not change.  On the other bands (including 28 MHz) it immediately goes to 1.0.
 
Setting the ATU to bypass still does not get RF output on the XV bands. The 
 current draw key down at 0.1 watt is about 0.43 A on the XV bands, and 
about .55  on the HF bands where there is output.
 
Has the KX3 firmware caught up with the XV bands?  I'm using  V1.30.
 
 
73  -   Jim   K8MR
 
 
 
 
 
In a message dated 1/8/2013 10:15:12 P.M. Eastern Standard Time,  
Jimk8mr at aol.com writes:

I'm  working at getting my DEM transverters interfaced to the KX3. I've set 
  
up the first three XVTR bands, configured for 28 MHz IF. With the KX3 max  
power  set at 0.1W on the transverter bands, I'm only getting about  20 mW 
of 
28 MHz RF  output (1V RMS measured on the scope). When I use  28 MHz with 
the 
power 
set at 0.1W I'm showing about 350 mW (4V RMS).  

I can increase the RF power by increasing the KX3 max power setting,  but  
still it is much lower on the XV bands than on 28  MHz.

The absolute numbers may not be very accurate, but why the  big  difference?


73  -  Jim   K8MR  



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