K3 on battery?

[Doug Faunt N6TQS [phone]]

How well does the K3 work with lower power supply voltage, such as
from a deep cycle battery after some hours of use?
I'm looking at resurrecting my station for FD, as 1E.
Relearning the K3 would probably be easier than learning the KX3.
73, doug
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[Nr4c]

It works ok until the battery gets to 11 Bolts under TX.

Note:  as voltage goes down the current goes up and as voltage goes down the IMD also goes up.

My club uses two batteries on series and a buck converter to control voltage to 14 volts.



Sent from my iPhone
...nr4c. bill

> On May 27, 2020, at 11:54 AM, Doug Faunt N6TQS [phone] <[hidden email]> wrote:
>
> How well does the K3 work with lower power supply voltage, such as
> from a deep cycle battery after some hours of use?
> I'm looking at resurrecting my station for FD, as 1E.
> Relearning the K3 would probably be easier than learning the KX3.
> 73, doug
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]

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[Wes Stewart-2]

"Working" rather than working well with a clean signal are two different things.

A K3(S), as well as almost any other "12V" rig, is prone to increased TX IMD as
the supply voltage is reduced.  For FD, with reduced efficiency antennas and no
amplifiers, it's probably okay, but for everyday use, it would be bad form.

Wes  N7WS


On 5/27/2020 8:48 AM, Doug Faunt N6TQS [phone] wrote:
> How well does the K3 work with lower power supply voltage, such as
> from a deep cycle battery after some hours of use?
> I'm looking at resurrecting my station for FD, as 1E.
> Relearning the K3 would probably be easier than learning the KX3.
> 73, doug
> ______________________________________________________________

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