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Power for zBitx via USB-C

 

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I wonder if something like this could be used to power the zBitx from a home USB-C PD adapter or powerbank, the cable can supply 3 amps of current at 9 volts (based on Mfg claims)...

?

Ken, N2VIP
 

It all depends on how capable your USB-PD power brick is. These cables are just USB sinks that ask for the?specified voltages; it's up to the power supply to be able to deliver them. A 27W USB charger, for example, will certainly supply 9V at 3A, but might or might not be able to supply voltages higher than 9V at all.


On Sun, Jan 5, 2025 at 4:11?PM Ken N2VIP via <ken=[email protected]> wrote:
I wonder if something like this could be used to power the zBitx from a home USB-C PD adapter or powerbank, the cable can supply 3 amps of current at 9 volts (based on Mfg claims)...

?

Ken, N2VIP
 

Hi Ken,

One of the Farhan intention was that this rig can be powered from a power bank.

Raj

On 06/01/2025 2:41 AM, Ken N2VIP via groups.io wrote:
I wonder if something like this could be used to power the zBitx from a home USB-C PD adapter or powerbank, the cable can supply 3 amps of current at 9 volts (based on Mfg claims)...



Ken, N2VIP
 

In retroscept, it doesnt work. The power banks have HUGE rf noise. The radio is wholly unusable. Instead, we are recommending either a 2s battery or an external power source of between 6v and 9v


On Mon, Jan 6, 2025, 2:25 PM Raj vu2zap via <rajendrakumargg=[email protected]> wrote:
Hi Ken,

One of the Farhan intention was that this rig can be powered from a
power bank.

Raj

On 06/01/2025 2:41 AM, Ken N2VIP via wrote:
> I wonder if something like this could be used to power the zBitx from
> a home USB-C PD adapter or powerbank, the cable can supply 3 amps of
> current at 9 volts (based on Mfg claims)...
>
>
>
> Ken, N2VIP
>
 

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Ah well, it's not like there isn't already a power source attached to the radio chassis!

Thanks for the update Farhan, it makes sense, I think most power banks have internal voltages of under 4v and are ?boosted to provide higher voltages.

Ken, N2VIP

On Jan 6, 2025, at 22:08, Ashhar Farhan via groups.io <farhanbox@...> wrote:

?

In retroscept, it doesnt work. The power banks have HUGE rf noise. The radio is wholly unusable. Instead, we are recommending either a 2s battery or an external power source of between 6v and 9v


On Mon, Jan 6, 2025, 2:25 PM Raj vu2zap via <rajendrakumargg=[email protected]> wrote:
Hi Ken,

One of the Farhan intention was that this rig can be powered from a
power bank.

Raj

On 06/01/2025 2:41 AM, Ken N2VIP via wrote:
> I wonder if something like this could be used to power the zBitx from
> a home USB-C PD adapter or powerbank, the cable can supply 3 amps of
> current at 9 volts (based on Mfg claims)...
>
>
>
> Ken, N2VIP
>
 

Ashhar,
I've been using USB-C Power Delivery banks and trigger cables/boards for several years now. I haven't run into the RF problem you have. In fact, I worked QRP/Battery Power at Field Day for a couple of years. Made a couple of contacts over 800 miles off a link dipole only about 20 feet over my vehicle.

Maybe I've just gotten fortunate with the PD gear I've been using. I don't use simple buck/boost gear -- those ARE an RF nightmare! -- but the PD cables and boards appear to have a much lower RF noise component than you've experienced. If there is RF noise coming from these devices, it's not in the bands I'm using. It isn't broadband.


-=-=-=-=-=-=-=-=-
73,
Gwen, NG3P
 

Does the zBitx have an onboard battery charger for the 18650's?
 

Pretty sure I didn't see anything in the schematic showing it did have onboard charging?
 

Ashhar,
Any thoughts that you will be exhibiting with radios for sale (zBitx) in Dayton or Orlando this year?
73
Bill
WC1J

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