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Bias fixed to mode
Steve London
Member ✭✭
I am using a (new) PGXL with a non-Flex radio, using CAT control. The bias (AB/AAB) seems to be locked to the radio mode, and can not be changed from the utility or the touch screen. Is this the correct operation ?
73,
Steve, N2IC
0
Comments
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Yes. AAB on voice modes sets VDD at 52 volts and bias to 4 amps. This gives better IMD performance.
For single tone modes (CW, FT8, etc) you can enable MEffA. This will set bias to 2 amps and adjust VDD on the fly to maximize efficiency and reduce heat.
73
Dave wo2x
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Steve, just curious, what OEM radio are you using ?
(this is not related to your question, just curious)
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FTDX101D and TS-590S
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Would you mind answering the questions on this thread please.
It would really help out others.
73
0
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