K3 power in RTTY

[n6wg]

I understand the 100w version has to watch its power level

when used in high duty cycle modes.

 

Does anyone know about the 10w version?  I'll be doing

RTTY with my K3 at 5w.  I assume that is low enough for

the 10w PA to get along fine, but I'd like to know for sure.

Couldn't find a mention in the manual.

 

73, Bob N6WG

 

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[Julian, G4ILO]

Bob Tellefsen wrote

I understand the 100w version has to watch its power level
when used in high duty cycle modes.

Does anyone know about the 10w version?  I'll be doing
RTTY with my K3 at 5w.  I assume that is low enough for
the 10w PA to get along fine, but I'd like to know for sure.
Couldn't find a mention in the manual.

Actually I thought the 100W version was rated at full power key down for 10 minutes. Personally I wouldn't try it, but I'm sure that's what the spec says.

I haven't seen a similar spec for the 10W version. I asked a similar question a few months ago but never received a reply. It's actually relevant even for those who have the PA if they should decide to operaste at a power of 10W, because the PA only kicks in at 12W, so at 10W the small PA is doing all the work. Since it only has the bottom of the case for a heatsink and no fan assistance at all, I'm not at all sure that it could handle 10W key down for 10 minutes, but I'm not going to try to find out the hard way.

[n6wg]

Hi Julian
Since I'll be operating QRP at 5w,
I doubt the PA will be stressed.
GL and 73
Bob N6WG

----- Original Message -----
From: "Julian, G4ILO" <[hidden email]>
To: <[hidden email]>
Sent: Monday, December 22, 2008 7:20 AM
Subject: Re: [Elecraft] K3 power in RTTY

>
>
>
> Bob Tellefsen wrote:
>>
>> I understand the 100w version has to watch its power level
>> when used in high duty cycle modes.
>>
>> Does anyone know about the 10w version?  I'll be doing
>> RTTY with my K3 at 5w.  I assume that is low enough for
>> the 10w PA to get along fine, but I'd like to know for sure.
>> Couldn't find a mention in the manual.
>>
>>
>
> Actually I thought the 100W version was rated at full power key down for
> 10
> minutes. Personally I wouldn't try it, but I'm sure that's what the spec
> says.
>
> I haven't seen a similar spec for the 10W version. I asked a similar
> question a few months ago but never received a reply. It's actually
> relevant
> even for those who have the PA if they should decide to operaste at a
> power
> of 10W, because the PA only kicks in at 12W, so at 10W the small PA is
> doing
> all the work. Since it only has the bottom of the case for a heatsink and
> no
> fan assistance at all, I'm not at all sure that it could handle 10W key
> down
> for 10 minutes, but I'm not going to try to find out the hard way.
>
> -----
> Julian, G4ILO. K2 #392  K3 #222.
> http://www.g4ilo.com/ G4ILO's Shack   http://www.ham-directory.com/ Ham
> Directory    http://www.g4ilo.com/kcomm.html KComm for Elecraft K2 and K3
> --
> View this message in context:
> http://n2.nabble.com/K3-power-in-RTTY-tp1687918p1690390.html
> Sent from the Elecraft mailing list archive at Nabble.com.
>
> _______________________________________________
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