KX2 real life power

[david perry]

Im wondering what KX2 users are finding to be the output power when on
internal battery.  I ask because I am using a friends KX3 at the moment and
whilst on external power it gives full spec, on internals the power drops
to 3 or 4 watts out.  Is the KX2 better than this or is that all there is,
even on the new rig?

David
G4YVM
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[Tom Crayner]

Sounds like the batteries are possibly suspect.

A KX3 will give out 10W down to 10V according to the firmware release
(v2.38), and although I haven't personally run my batteries down that low I
haven't seen any behavior to indicate otherwise (in other words I'm getting
10W out, not 3 or 4W as you are seeing). Check and see if you are on that
FW release.

On the KX2 I am set at 5W out (not the full 10W due to duty cycle of the
digital I use) and I am still getting the full 5W out with the battery pack
about half depleted (if I believe the amp hours reading).

Tom, W2YF

On Fri, Jun 17, 2016 at 4:45 AM, david perry <[hidden email]> wrote:

> Im wondering what KX2 users are finding to be the output power when on
> internal battery.  I ask because I am using a friends KX3 at the moment and
> whilst on external power it gives full spec, on internals the power drops
> to 3 or 4 watts out.  Is the KX2 better than this or is that all there is,
> even on the new rig?
>
> David
> G4YVM
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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> Please help support this email list: http://www.qsl.net/donate.html
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[wayne burdick]

The KX2 will put out a full 10 watts on most bands when running from 11-14 V. In real life :)

The internal battery, when fully charged, starts out at 12 V but quickly settles to around 11 V.

73,
Wayne
N6KR


On Jun 17, 2016, at 4:37 AM, Tom Crayner <[hidden email]> wrote:

> Sounds like the batteries are possibly suspect.
>
> A KX3 will give out 10W down to 10V according to the firmware release
> (v2.38), and although I haven't personally run my batteries down that low I
> haven't seen any behavior to indicate otherwise (in other words I'm getting
> 10W out, not 3 or 4W as you are seeing). Check and see if you are on that
> FW release.
>
> On the KX2 I am set at 5W out (not the full 10W due to duty cycle of the
> digital I use) and I am still getting the full 5W out with the battery pack
> about half depleted (if I believe the amp hours reading).
>
> Tom, W2YF
>
> On Fri, Jun 17, 2016 at 4:45 AM, david perry <[hidden email]> wrote:
>
>> Im wondering what KX2 users are finding to be the output power when on
>> internal battery.  I ask because I am using a friends KX3 at the moment and
>> whilst on external power it gives full spec, on internals the power drops
>> to 3 or 4 watts out.  Is the KX2 better than this or is that all there is,
>> even on the new rig?
>>
>> David
>> G4YVM
>> ______________________________________________________________
>> 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]
>>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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>
> 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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[Jim GM]

Just had to recharge battery for the first time.

I used just about 2.1 hours of battery time.  Real time I had the radio on for just over 7 hours calling CQ and just in the receive mode.  Output of my KX2 was 5 watts and the Battery Min was set for 9.0 V.

My question what is a better setting for this radio  8.7 V. to get my full 2.5 hours or is my thinking wrong?  If so why?

Jim K9TF

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