[hpsdr] HPSDR(Mercury, Pannylane, adn Metiz) and PowerSDR version

[Tokio]

Hi Helmut,

Thank you for your email.
Pennylane is uncontrollable in terms of Drive. Regardless of Drive Level,
the output of Pennylane is around 30dBm. I measured the power at the output
of penny, no post-amp for this measurement.
I would like to change the firmware of Penny.

73,
Tokio
JA1CCA

2021年10月17日(日) 0:58 Helmut Oeller <dc6ny at gmx.de>:

> ***** High Performance Software Defined Radio Discussion List *****
>
> Hi Tokio,
>
> if I recall correctly 'drive control' is done by  varying  the DAC
> current. Hence I would suggest to check first the real Penny RF output
> power without any post-amplifier:
>
> PA settings 38 dB, drive power 100 percent, apply 'Tune button' and
> don't forget to select 'use drive power' in 'transmit/tune' window.
>
> Output power should be around 500 mW @ 2 - 21 MHz, then power drops to
> 200 - 400 mW. The TX meter in PowerSDR shows slightly different values.
> If all is ok, you can test the 'drive power' variation and measure how
> far output followes the 'drive control'.
>
> 73, Helmut, DC6NY
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