[Elecraft] K3S QST Article

[Bill Frantz]

It seems to me that this solution would tie the K3S++ to mains 
power. Being tied to mains power would impact my club's use of 
K3s with batteries on events like the California QSO party. (Our 
location does not permit generators.) I don't know how much such 
a restriction would shrink the K3S market.

A voltage booster could be a solution. Such a device would have 
to be well shielded and bypassed to avoid RFI. It could either 
be internal to the radio or a "bump on the power cable". Such 
devices are available in the market and seem to work well.

73 Bill AE6JV

On 10/14/16 at 5:14 PM, kstover at ac0h.net (Kevin) wrote:

>The cause for this is the use of 12V finals. It would be much improved by moving to 24 or 50V finals.
>
>Move the /K3s II/ to 50V finals, say a pair of MRF 150's, 
>limited to 150 or 200W max output. Design/Sell an outboard 50V 
>switching supply capable of 15-20A continuous current, with a 
>10A 12V switcher built in for the rest of the radio.

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