After improving the connection to the battery and using two of the same
batteries in parallel, I tested across all bands.
Setup:
ZS6BKW antenna at 45' in inverted V, with 30' coax from twin line to KX3
Most test runs were without balun, some with a 1:1
Two identical 12V/17Ah batteries, start
: Re: [Elecraft] KX3 power reverts from 10W back to 5W
Message-ID: <5220e687.3020...@gmail.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
(list of five questions)
__
Elecraft mailing list
Home
se is
running off the battery (a UPS type).
-Original Message-
From: Ralf Wilhelm [mailto:r...@super-deutschland.net]
Sent: Friday, August 30, 2013 13:19
To: Arno Dienhart
Cc:
Subject: Re: [Elecraft] KX3 power reverts from 10W back to 5W
Hi Arno,
If your fully charged batt reads 11.4 V
raft] KX3 power reverts from 10W back to 5W
Arno,
Even though the battery voltage measures (as an average) at 11.7 volts
during transmit, my suspicion is that it may be "glitching" for brief
periods below 11 volts and the detection circuit trips forcing the KX3 to
low power.
Check all the
I should have mentioned it again: I am powering from a 12V 17Ah sealed lead
acid battery.
From: KENT TRIMBLE [mailto:k9...@socket.net]
Sent: Friday, August 30, 2013 12:26
To: Arno Dienhart
Subject: Re: [Elecraft] KX3 power reverts from 10W back to 5W
Are you powering the rig with internal
Here is a few questions.
1) are you running from a external battery or the internal aa batts.
2) have you run a check on the cables to make sure there are no
crimps/bends/breaks in the line with a volt meter ot cable tester or such
3) what is your external power source ? anything under 13.8v lik
Hi Arno,
If your fully charged batt reads 11.4 V AFTER the KX3 has switched back to 5 W,
the voltage reading with 10 W (maybe 50% more current?) will most probably be
below 11 V.
I would suggest that you try to gradually increase the output power from 5
Watts and read the voltage and currents
e very moment of power switching back
> and will look for it next time.
>
> 73,
> Arno K7RNO
>
> -Original Message-
> From: Matt VK2RQ [mailto:matt.vk...@gmail.com]
> Sent: Friday, August 30, 2013 12:32
> To: Arno Dienhart
> Cc:
> Subject: Re: [Elecraft] KX
Arno,
Also check the connections to the fuse in your power cord. You *DO*
have it fused do you not?
A fuse near the battery is essential to prevent a shower of molten metal
if there is any fault in the wire or the connected equipment. Any
battery stores a LOT of energy.
The automotive blade t
t of power switching back
and will look for it next time.
73,
Arno K7RNO
-Original Message-
From: Matt VK2RQ [mailto:matt.vk...@gmail.com]
Sent: Friday, August 30, 2013 12:32
To: Arno Dienhart
Cc:
Subject: Re: [Elecraft] KX3 power reverts from 10W back to 5W
Hi Arno,
I run a similar setup, Z
Hi Arno,
I run a similar setup, ZS6BKW, 1:1 current balun, 100ft RG213 coax, I normally
run 10W, and haven't observed problems with the rig switching back to 5W. I do
run my rig off a 13.8V 20A supply. If you run at a lower voltage, the rig needs
to draw more current to maintain a particular po
Arno,
Even though the battery voltage measures (as an average) at 11.7 volts
during transmit, my suspicion is that it may be "glitching" for brief
periods below 11 volts and the detection circuit trips forcing the KX3
to low power.
Check all the connections to your power source and make cert
I would like to come back to this topic with an update after still
experiencing the same issue.
I now use my ZS6BKW with a 1:1 current balun between the twin line and the
coax. I have tried a 70' and a 30' length of coax to the rig. If you think
it will solve the problem, I might even try a 5'
0:1 SWR. RX was exceptionally low-noise but
TX did not get a lot of contacts (may have been other factors).
73,
Arno
-Original Message-
From: Wayne Burdick [mailto:n...@elecraft.com]
Sent: Monday, August 05, 2013 19:46
To: Arno Dienhart
Cc:
Subject: Re: [Elecraft] KX3 power reverts from 10W b
I have found that with even a freshly charged 7Ah battery that the power
folds back, on some bands especially, even if the internal atu has found a
good match. However, in almost all cases setting the power output to 8W
rather than initially 10W it doesn't happen as much, at least not until the
bat
Arno,
Sure someone from Elecraft will respond with a technical
explanation...sounds a bit like default behaviour to me and also shows
there is a difference in the battery and the internal PA voltage and you
are maybe close to the fold back voltage.
If the supply voltage drops below 12V (I us
least I can be sure that nothing is wrong
> with my KX3.
>
> 73,
> Arno
>
> -Original Message-
> From: Wayne Burdick [mailto:n...@elecraft.com]
> Sent: Monday, August 05, 2013 17:02
> To: Arno Dienhart
> Cc: elecraft@mailman.qth.net
> Subject: Re: [Elecr
that nothing is wrong
with my KX3.
73,
Arno
-Original Message-
From: Wayne Burdick [mailto:n...@elecraft.com]
Sent: Monday, August 05, 2013 17:02
To: Arno Dienhart
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KX3 power reverts from 10W back to 5W
Hi Arno,
The KX3 requires 11.0
Hi Arno,
The KX3 requires 11.0 volts minimum on key-down for power output levels of
greater than 5 W. We do this to ensure low IMD in SSB transmit mode, but it's
good practice in general because most 12-V batteries can be damaged quickly if
you let the voltage go much below 11.0 with a heavy lo
So I had set up in the park, with a charged 12V 17Ah battery connected. It
was a hot day but I was in the shade.
Every time I set power level to 10W and keyed the TX, it reverted back to 5W
instantly. Why?
The Volt meter showed 12.3 V at RX and dropped to 11.7V at TX. Was that the
reason (g
20 matches
Mail list logo
