TX power drifts upwards.

[reliant325]

I recently acquired a K3 which I decided to try on WSPR.
I have been active on WSPR for many months now. I setup the K3 with the same interface and PC as I use with my IC7700.
The setup with the K3 was straightforward and worked well.....however.....

I set my TX power to 1 watt and during the TX cycle the power slowly creeps up to about 2 watts.
When the next TX cycle comes around, its back to 1 watt and then creeps upward again.
Anyone else experienced this?

Roger G0IUW
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[Mike K2MK]

Hi Roger,

You should probably redo the TX Gain calibration from the K3 Utility. If the problem remains only on one or two bands you may want to manually fiddle with the setting per the notes at the top of page 62 of the manual. If the problem remains on all bands there is probably some other cause.

73,
Mike K2MK

reliant325 wrote

I recently acquired a K3 which I decided to try on WSPR.
I have been active on WSPR for many months now. I setup the K3 with the same interface and PC as I use with my IC7700.
The setup with the K3 was straightforward and worked well.....however.....

I set my TX power to 1 watt and during the TX cycle the power slowly creeps up to about 2 watts.
When the next TX cycle comes around, its back to 1 watt and then creeps upward again.
Anyone else experienced this?

Roger G0IUW

[Lyle Johnson]

Roger,

Be sure the MIC or LINE IN gain is set to give 4 flickering to 5 bars of
ALC with your WSPR (or other DATA A mode) Tx audio applied.  The most
common problem in running digital modes with the K3 is setting MIC/LINE
IN gain too low.  This results in exactly the sort of "power creep" you
desribe.

73,

Lyle KK7P

>> ...I set my TX power to 1 watt and during the TX cycle the power slowly
>> creeps up to about 2 watts.
>> When the next TX cycle comes around, its back to 1 watt and then creeps
>> upward again.
>> Anyone else experienced this?

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