[Elecraft] K3 Power Drop During Operation

[Bill Frantz]

If you have the ATU, it can be fooled into thinking you have a 
bad match by AM broadcast stations nearby. If you have a nearby 
broadcast transmitter, a band reject filter is one solution.

73 Bill AE6JV

On 1/25/18 at 3:54 AM, jmaass at k8nd.com wrote:

>I was running some stations on 160-meters this morning, and 
>noted that the power output had dropped from the amp.
>
>Further investigation found that the maximum power out from the 
>K3/100 was reduced from ~100W to about 54W, with no error 
>messages displayed on the K3. Advancing the 'PWR' control 
>beyond 54 W made no difference. I stopped operating, and found 
>that the power slowly restored, first to a maximum of 84W, and 
>then back to the normal 100W maximum.
>
>I assume that this is an issue with temperature? The ambient 
>temperature was cool (A/C running in shack). I have not noted 
>this problem before.
>
>The fan was set to 'Config > KPA3 > PA nor'.  recommended setting for hard contest use?
>
>73,  Jeff  PJ2ND / K8ND

-----------------------------------------------------------------------
Bill Frantz        |Security, like correctness, is| Periwinkle
(408)356-8506      |not an add-on feature. - Attr-| 16345 
Englewood Ave
www.pwpconsult.com |ibuted to Andrew Tanenbaum    | Los Gatos, 
CA 95032