[Elecraft] [K3] Odd transmit power output behavior on TX DATA
aa4lr at mac.com
aa4lr at mac.com
Fri Dec 30 11:46:28 EST 2022
All bands.
Power calibration was done about 9 months ago.
> On Dec 30, 2022, at 11:19 AM, Joe Subich, W4TV <lists at subich.com> wrote:
>
>
> One band or all bands?
>
> Have you done the power calibration routine recently?
>
> 73,
>
> ... Joe, W4TV
>
> On 2022-12-30 10:34 AM, Bill Coleman via Elecraft wrote:
>> I own two K3/100 radios. One is SN70xx, another SN87xx. On one of them, I observe an odd behavior with transmit power output.
>> Even though I have an antenna matched to nearly 1:1 VSWR using the internal tuner, any time I change bands, or adjust the power level, SN70XX does not put out full power right away. Instead, it starts about 40-50 watts, and then slowly creeps up to 100 watts. This takes about 4-6 15 second FT8 transmissions.
>> It doesn’t appear to behave this way on CW or SSB. Only on TX DATA modes.
>> My other radio doesn’t exhibit this behavior.
>> The two radios have different internal options, but many of the configuration parameters are the same.
>> Any suggestions?
>> Bill Coleman, AA4LR, PP-ASEL Mail: aa4lr at mac.com
>> Quote: "We invented personal computing."
>> -- Bill Gates @ TechNet / MSDN 2003
>
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