[Elecraft] K144XV output power range

[Jeff Cochrane - VK4BOF]

Stan et al,

My K144XV gives me from 1.5 to 10.5 watts from 0.1 to 1.0 mW of drive.
Although my K3 was factory setup with up to 1.5mW of drive available for the txvtr, I have 
found no benefit to exceeding 1.0mW of drive so I have setup the XV1 PWR output 
accordingly.
(I get 10.5W out with 1.0mW in.)

YMMV,

73 de
Jeff Cochrane - VK4BOF
Elecraft K3 #4257 + PR6 + K144XV + KPA500 #161 = Fanbloodytastic performance!
----- Original Message ----- 
From: "John Lemay" <john at carltonhouse.eclipse.co.uk>
To: "'Stan Gibbs'" <stan at ajaxsoftware.com>; <elecraft at mailman.qth.net>
Sent: Tuesday, August 09, 2011 5:24 PM
Subject: Re: [Elecraft] K144XV output power range


> Stan
>
> I missed your original post, so I'm appending to this one.
>
> My K144XV can be controlled from about 2w to 9w. I would hazard a guess that you may be 
> overdriving and sending something into compression in an attempt to get more power out.
>
> It would also help if you could borrow another external meter to see if yours has a 
> problem.
>
> Good luck
>
> John G4ZTR
>
>
> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net [mailto:elecraft-bounces at mailman.qth.net] On 
> Behalf Of Johnny Siu
> Sent: 09 August 2011 01:24
> To: Stan Gibbs; elecraft at mailman.qth.net
> Subject: [Elecraft] K144XV output power range
>
> Hello Stan,
>
> I got 1-9 watt output on my Kuranichi meter.  I would suggest check the sitting of the 
> TMP cables.  I once managed to deform the TMP socket by inserting the cable incorrectly.
>
> Since that time, I open up the top cover of the K144XV to check the cabling whether I 
> re-sit the K144XV into my K3 after dismantling.  In other words, I do all my cabling 
> work with top cover opened and cover it after visual inspection.
>
> TNX & 73,
>
>
> Johnny VR2XMC
>
> 從︰ Stan Gibbs <stan at ajaxsoftware.com>
> 收件人︰ elecraft at mailman.qth.net
> 傳送日期︰ 2011年08月9日 (週二) 6:48 AM
> 主題︰ [Elecraft] K144XV output power range
>
> My external watt meter does not agree with the power output bar graph display
> on the K3 except in the very middle of the power range.  While turning the
> power control from 0.1 to 1.0 W., the bar graph shows the expected 1 to 10
> display.  But my watt meter display goes from about 5.8 to 7.5 W.
>
> Does my watt meter really suck, or is this a behavior that others have seen?
> The K144XV manual suggests that an upper value of 7.5 W is not unreasonable
> given the accuracy of most meters.  But 5.8 W for a minimum output power
> seems way too high.
>
> Anybody have numbers to compare?
>
>
> -----
> 73, Stan - KR7C
> --
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