Posted by
Don Wilhelm-4 on
Sep 04, 2011; 8:38pm
URL: http://elecraft.85.s1.nabble.com/KXAT1-No-RF-Power-on-display-tp6759034p6759185.html
Keith,
When transmitting (tuner installed or not), the KX1 displays bars on the
LED that are proportional to the power output - approximately 1 bar per
watt. With the tuner installed, it displays the power after tuning -
then tap any button and the display briefly shows the SWR achieved.
That is normal indication.
Your balance point should be lower than 0.01 volts - move the trimmer
VERY slowly and you should be able to achieve 0.001 volts or lower.
If you are getting only 1 watt out with a 12 volt supply, you may have
some other problem with the KX1. First thing to check is the LPF
toroids (L1 and L2) - if they have an extra turn, that will cause severe
power output reduction.
73,
Don W3FPR
On 9/4/2011 3:11 PM, K Price wrote:
> Just completed building the KXAT1. I believe I successfully passed each alignment step.
>
> 1) No "---" when selecting ATU
> 2) Hear relays switching as I move through L0, L1, ... N1, N2
> 3) Adjust C9 until a dc volt value of 0.01 on the meter.
> 4) When I "tune" into a dummy load or a descent antenna (e.g. Alpha Delta
> DX-EE), I hear the relays clicking and get an r of 1.2 or so.
>
> However, I don't get any RF reading on the display when transmitting. To check
> that I was really getting out, I hooked up my W1 meter and it shows
> about 1 watt of power out using 12 volts from my power supply.
>
> Any thoughts about why I wouldn't see anything on the display?
>
> Thanks,
>
>
> Keith - WA5LPW
> www.wa5lpw.com
> 901.409.1432
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