What is the #IC705's transmit power?
I recently did a bunch of measurements.
Takeaways:
With the power knob at 0%, output can still be as much as 100 mW.
When using the "max power" setting, actual power delivered is always a little lower.
Output power mildly dependent on which band you transmit.
To achieve 5 W output, I'll set "max power" to 10 W and the percentage to 61%.
More details: https://dj3ei.famsik.de/blog/posts/2025/ic-705_pwr/
I recently measured #IC705 transmit power 
. But I did not dive into output power's dependency on supply voltage. Jürgen DF3PM kindly made me aware of results by George, M1GEO. George found out that (unsurprisingly), output power drops as supply voltage is decreased from 13 V to 12 V or less.
Interestingly and somewhat surprising, output power is stable as supply voltage is increased to 14, 15, or 16 V, though efficiency drops.
https://www.george-smart.co.uk/2024/07/measuring-the-icom-ic-705-rf-power-vs-dc-input-voltage/
Thanks, Jürgen and George!
@dj3ei In addition to using WSTX, I'd also switch the rig to RTTY and just press the PTT. Or, alternatively, set it to CW and send a superlong daaaaaah using a straight key.
Unfortunately I don't have a precise power measurement equipment à la R&S, but maybe I'll do such tests and post about them anyway.
Didn't do that, but it's clearly a good idea to try that, too.