Have received my uBITx but haven't started assembling yet... I was thinking along similar lines, using 6V to power the board, and using 24V for the PA... Does it make sense to change out the 7805 voltage regulator for something different to make this work? Thx, Calvin VE3EIT
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On Thursday, April 26, 2018, Skip Davis via Groups.Io <skipnc9o=
[email protected]> wrote:
Sarma, if we look at setting up the uBITX for a minimal supply voltage operation we will need to also include minimal dropout regulators to the RF amplifier stages too. Then the resistors values will need to be recalculate for all stages to maintain the gain throughout the bidirectional RF amplifiers. This sounds like an interesting idea try.
We need to study the minimum voltage needed for relay operation. If we can change the relays to5V type, and use a LDO regulator on raduino, we can work at 6V battery for the rig except that we may have to provide higher voltage for the HF linear? final section. May be, the bias arrangements of the pre-amp, driver and power amp need to be tweaked.
regards
?sarma
?vu3zmv
