[Elecraft] Jumping K2

[JEAN-FRANCOIS MENARD]

I had a problem similar in the past.... when transmitting at 12W....  
I heard a sound like this one (very scarry) and lost power after on  
that band.... The problem was a bad solder on the toroïd associated  
to the band. After, no problem at all.

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/¯\/¯\/¯\/¯\/¯\/¯\   JEAN-FRANCOIS MENARD
  V  A  2  V  Y  Z
\_/\_/\_/\_/\_/\_/

FISTS #11896
Elecraft K2 #4130
Elecraft KX1 #999

http://homepage.mac.com/jfmenard
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Le 05-11-25 à 23:15, Ron D'Eau Claire a écrit :

> I've not seen that symptom, but I'd be very suspicious of the  
> resettable
> fuse (F1) opening for some reason. Either it's gotten intermittent  
> or you're
> drawing enough current to exceed its "trip point" at, I believe, 3  
> amps.
>
> The K2 is resetting to a previous frequency because you haven't done
> something to make it 'remember' the current settings yet. That'll  
> happen any
> time you pull power. The howl... I'm not sure about but what's  
> causing it
> might be what's causing the current overload on F1. First I'd check  
> the
> current draw as you approach 12 watts.
>
> Ron AC7AC
>
> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net
> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of  
> gwwhatley at juno.com
> Sent: Friday, November 25, 2005 6:21 PM
> To: elecraft at mailman.qth.net
> Subject: [Elecraft] Jumping K2
>
>
> Hi all
>
> My K2 # 4758 has gone strange.  All is well if power is set to less  
> than
> about 10 watts.  But lately, if power is set to 12 w or more, it  
> shuts down
> and emits a loud and nasty sounding "howl", which only lasts a  
> moment.  It
> promptly comes back on, but the frequency changes to a previously used
> frequency.  This was not a one time happening, but can be  
> duplicated.  It
> seems to be so on all bands.  The only options I have is the KAF-2,  
> (which I
> love), and the noise blanker.  Other than this problem, all is  
> fine, and I
> am very pleased with my little sweetheart of a rig.  I can  
> understand its
> shutting down, but why is it changing frequency and barking at  
> me??  In its
> earlier days when it shut down, it did so quietly and returned to  
> the same
> frequency.
>
> Any ideas??
>
> Tnx and 73,
> George, N4YM
>
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