[Elecraft] K2 turning power behavior

[Stewart Baker]

On Fri, 21 Jan 2005 13:21:58 -0500, Donald Nesbitt wrote:
> OK - now that I have started from 0.01 and gone UP to 100w with PTT held
>
> closed on usb, mine does the same thing that you describe (stops xmit as
> soon as the KPA100 kicks in - still in xmit mode but no power out) AND
> starting from 100w and going down to 0.01 it does not do this (ie continues
> to xmit throughout the range).  Now I'm not sure just why I'd ever want to
> do "up" scenario but since it does not continue to xmit when doing this it
> would tend to save a little abuse of the relay contacts.  A nice "feature!"
> 73  --don n4hh
>
> ----- Original Message -----
> From: "Tom Arntzen" <tom.arntzen at monet.no>
> To: <elecraft at mailman.qth.net> "S55M" <s55m at siol.com>
> Sent: Friday, January 21, 2005 2:22 AM
> Subject: Re: [Elecraft] K2 turning power behavior
>
>
>> My K2 #3829 with KPA100 act the same way.
>> Don't think it's a building error.
>> Maybe something in the software.
>>
>> Tom LA1PHA
>>
>> ----- Original Message -----
>> From: "S55M" <s55m at siol.com>
>> To: <elecraft at mailman.qth.net>
>> Sent: Friday, January 21, 2005 12:45 AM
>> Subject: Re: [Elecraft] K2 turning power behavior
>>
>>
>>> OK.I will write it down agn step by step...
>>>
>>>
>>> 1.Turn Power button to 0,1W (full left)
>>>
>>> 2.Press PTT
>>>
>>> 3.When on TX without releasing PTT turn power up over 10W limit to turn
> on
>>> 100W PA.
>>>
>>> When i do this my K2 stops transmiting above the 10W point (when KPA100
>>> clicks up).
>>> The only thing to do then is to release PTT and press it again and
> "voila"
>>> on the AIR again.
>>>
>>> If i go in reverse direction (turning power from 100Wtts to less then
> 10W)
>>> everything works fine!
>>>
>>> K2 Nr-3204 SW- 1.09 and 2.04
>>>
>>> It's not a problem but must be a hint.....
>>>
>>>
>>> S55M-Adi
>>>
>>>
>>> ----- Original Message -----
>>> From: "Donald Nesbitt" <drnesbitt at bellsouth.net>
>>> To: "Michael Harris" <mike.harris at horizon.co.fk> "S55M"
> <s55m at siol.com>
>>> <Elecraft at mailman.qth.net>
>>> Sent: Friday, January 21, 2005 12:00 AM
>>> Subject: Re: [Elecraft] K2 turning power behavior
>>>
>>>
>>>> Not on mine either.  73  --don n4hh K2/100/KAT100 #2028
>>>> ----- Original Message -----
>>>> From: "Michael Harris" <mike.harris at horizon.co.fk>
>>>> To: "S55M" <s55m at siol.com> <Elecraft at mailman.qth.net>
>>>> Sent: Thursday, January 20, 2005 5:22 PM
>>>> Subject: Re: [Elecraft] K2 turning power behavior
>>>>
>>>>
>>>>> G'day,
>>>>>
>>>>> <snipo>
>>>>> So...if i press the PTT (dot line on keyer when on USB) without
> talking
>>>>> (or maybe also with ssb modulation because i did not test it) and
> turn
>>> the
>>>>> power button on 100W and then reduce the power back to minimum my K2
>>> stops
>>>>> transmitting.I must then release the PTT and press it again to go
> into
>>> TX
>>>>> mode.
>>>>> Is this happening with all K2's?
>>>>> <snipo>
>>>>>
>>>>> Not on #1400 (external KPA100/KAT100 combo) unless I've read the
> above
>>>>> incorrectly.
>>>>>
>>>>> Regards,
>>>>>
>>>>> Mike VP8NO
>>>>
>>>>
>>>> --
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>>>>
>>>
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>>
>>
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Good point about the relay preservation.

73
Stewart G3RXQ