It might be OK with 10 V but it¡¯s so easy to get that down to 9.3 or so that why not? Find yourself four or 5 A worth of silicon diodes (either in one of them or in several in parallel) and use it to drop the voltage from 10 to 9.3!
Then you can feel pretty secure and be using one of the batteries you wanted to use. Let somebody else do the experiments on their radio, I wouldn¡¯t do it on mine. The manufacturer has told you what he¡¯s looking for! He calculated all of the bias points in current based on the voltages he recommended
Those are just my opinions. I¡¯m sure other people will differ.
Gordon kx4z
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On May 9, 2025, at 18:51, Travis Siegel via groups.io <tsiegel@...> wrote:
?Sorry to change the subject (slightly), but I'd like to know how far outside the specs in the manual we can go with power adapters. The zbitx manual says 6-9 volts is preferred. Will a 5V or a 10V supply break the radio? I have both of these, and was wondering which one (if either) I could use on the radio. Failing that, what kind of setup would I need to attach a 12-volt deep cycle battery (taken from a power scooter) to the radio. My wife had two of these batteries for her power chair, but it has since stopped working. I use them directly to power my yaesu 857, and it works just fine, but since that radio doesn't transmit, I'd like to try using them on the zbitx. Would I need a voltage regulator to reduce power to 6-9 volts, or can it handle the 12 volts directly?
The manual says we need 6-9 volts, with at least 3A for the radio, but I'm hoping there's some wiggle room in there, because I'm hard pressed to find such an adapter already lying around here. I'll have to go find one on amazon or something, but until then, can I use either of the above mentioned supplies w/o fear of burning up the radio?
