[Elecraft] Issue 12 re Astron Power Supply

[Bob]

I think the original question has morphed.  It is really two questions. The 
operational range of the K3 as one.  The second is really the optimum range of 
the K3.  In dealing with the drops between the K3 and power supply how much is 
excessive?   My Astron is set for 14 volt and drops at the K3 under XMIT.  How 
much drop would be necessary for the IMD to rise to  an unacceptable level? Or 
put another way what is a reasonable goal for the drop in the power cable or 
power distribution to the K3?

Zero millivolts would be ideal but not obtainable.  I'll admit to not having the 
knowledge or test gear to measure the IMD. If instead of getting 100 watts I 
could only get 95 watts to me that would be insignificant.  But I don't want to 
XMIT a "dirty" signal either.

73,
Bob
K2TK  ex KN2TKR (1956) & K2TKR



On 4/17/2018 7:55 PM, john at kk9a.com wrote:
> I believe that the transceiver will operate below 11 volts but it is better
> to keep it in the higher part of the voltage range.  My power supplies are
> all 13.8v and I use heavier cables than Elecraft supplied which keeps it
> around 13.5v while transmitting.
> 
> John KK9A
> 
> 
> Buck - K4IA wrote:
> 
> 
> What is the minimum recommended voltage for the K3S?  Using the stock
> Elecraft 5' cable, I drop from 13.3 to 12.7 volts on key down.
> 
> Buck, k4ia
> Honor Roll
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> EasyWayHamBooks.com
>