[Elecraft] KX3 RF out voltage measurements...

[David Davis]

Myron

Thanks for the information. I believe this will help me with what I need to check. 

I will also check out your suggested reading it sounds like there is some valuable information there. 

Thanks
David
KG6MTI

Sent from my iPhone

> On Jun 8, 2016, at 06:02, thelastdb <thelastdb at gmail.com> wrote:
> 
> David,
> 
> Set the radio for 5W in the TUNE menu first. Then press the tune button. I make all of my power measurements with my KX3 set to 5W and TUNE.
> 
> John and I use these DL1s extensively. Google KN5L DL1 and read up on the diode characterization and further reading about its use.
> 
> 72
> Myron WVØH
> Printed on Recycled Data 
> -------- Original message --------
> From: David Davis <kg6mti at sbcglobal.net> 
> Date: 6/7/2016 10:49 PM (GMT-07:00)
> To: elecraft at mailman.qth.net
> Subject: [Elecraft] KX3 RF out voltage measurements...
> 
> I might have an RF out issue with my KX3 but I am not sure how to test it.
> 
> I have an Elecraft DL1 and a DMM that I figure I can use to check the RF
> voltages and verify the power out. However, I am not sure of the exact
> process on how to do this. If I am keying the mic on SSB do I need to
> speak into the mic to be able to measure the voltages or just key the
> mic with silence? I would assume I need to be speaking into the mic.
> 
> The reason I ask this is because if I just key the mic with silence and
> the radio set for 10W with a input power supply of 13.5V DC I measure
> 4.7mv DC at the TP1 on the DL1 unit.
> 
> If I speak into the mic I see voltages from 11 - 18V DC from the TP1 on
> the DL1 unit. It seems to me that I need to be speaking into the mic. I
> figure if I was checking the RF out in CW mode I would need to key the
> keyer in some fashion.
> 
> I know this seems like an elementary level question but I would really
> like to verify the RF power out.
> 
> Any information is greatly appreciated in advance.
> 
> Thanks!
> David
> KG6MTI
> 
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