[Elecraft] KX3 KXPA100

[G7KXZ]

Thanks for the quick response 
Much appreciated. 
The PA CAL has made things a whole lot better across the bands.

Just worked W1AW/P0 on 10m running 25w to a Buddipole 

Who needs QRO just use the right band and propagation ;)

73
Kev


Sent from my iPhone5


> On 4 Mar 2014, at 18:21, Matt VK2RQ <matt.vk2rq at gmail.com> wrote:
> 
> First check the supply voltage to the amp -- if you're not giving it at least 13,8V you may find it winds back the max output power.
> 
> 73, Matt VK2RQ
> 
>> On 5 Mar 2014, at 4:36 am, "Cady, Fred" <fcady at ece.montana.edu> wrote:
>> 
>> Hi,
>> There is a power calibration that you can do.  This is from the KX3 firmware notes for KX3 firmware 1.76.  Maybe you can try that.
>> 
>> MCU 1.76 / DSP 1.27, 11-20-2013
>> 
>> * MENU:PA MODE NOW HAS POWER-OUT CAL (P out CAL) SETTING:  This enables 75-W power calibration in TUNE mode. When PWR is adjusted, and "P out CAL" mode is in effect, setting power to 75 watts shows "CAL 75W" on VFO B.
>> 
>> * KXPA100 DRIVE POWER CAL DATA UTILIZED: If the KXPA100's per-band 75-W drive power has been saved at the factory, the KX3 will use it.  If not, the KX3's own per-band amplifier drive data is used (if available). This data is created by setting PA MODE to Pout CAL (see above), then doing a TUNE on each band at 75 W.
>> 
>> 
>> Cheers,
>> Fred KE7X
>> 
>> "The Elecraft K3: Design, Configuration and Operation 2nd ed"
>> "The Elecraft KX3 - Going for the summit"
>> www.ke7x.com or www.lulu.com 
>> KPA500 and KAT500 Quick Set Up Guide
>> http://www.ke7x.com/home/k-line-introduction-and-set-up-guide 
>> (Coming soon: "The Elecraft KPA500 and KAT500 - the K-Line Dream Station")
>> 
>> 
>> -----Original Message-----
>> From: elecraft-bounces at mailman.qth.net [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of G7KXZ
>> Sent: Tuesday, March 04, 2014 10:14 AM
>> To: elecraft at mailman.qth.net
>> Subject: [Elecraft] KX3 KXPA100
>> 
>> Hi All,
>> 
>> I have had my KX3 for some time, just completed a kit KXPA100 with Tuner.
>> 
>> Testing all works well, ATU tunes very well. Audio reports on TX good.
>> 
>> My issue is with the Power out LED's and the Utility program monitoring the power. I do not have an accurate Power Meter Output appears as indicated not to exceed 70W
>> 
>> The LEDs follow the Utility program (makes sense) Can an adjustments be made? 
>> I am off to EA8 land on Monday......... and would like to run 100w and not 12w !!!
>> 
>> Att On
>> SWR 1:1
>> KX3 Dial= 25W
>> Utility Input= 0.4
>> Utility Forward= 7
>> Dissipated= 52
>> Relected= 0.0
>> 
>> SWR 1:1
>> KX3 Dial= 50W
>> Utility Input= 1.2
>> Utility Forward= 20
>> Dissipated= 74
>> Relected= 0.1
>> 
>> SWR 1:1
>> KX3 Dial= 75W
>> Utility Input= 2.1
>> Utility Forward= 36.5
>> Dissipated= 87
>> Relected= 0.3
>> 
>> SWR 1:1
>> KX3 Dial= 100W
>> Utility Input= 4
>> Utility Forward= 64
>> Dissipated= 96
>> Relected= 0.4
>> 
>> SWR 1:1
>> KX3 Dial= 110W
>> Utility Input= 5
>> Utility Forward= 75
>> Dissipated= 96.5
>> Relected= 0.4
>> 
>> 
>> 
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