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Re: add a wifi network to zbitx

 

Name your phone's hotspot the same as your home network. Simplifies transitioning.
Upgrade Required?

 

Hi,
?
So for those that have received their ZbitX in the last week or so..did it arrive with the latest firmware (for both the display and main)?
?
Or did you have to immediately update it?
?
Thanks,
Everett-WB9FUW
Re: Order # 3869 April 2

 

Thank you for posting date and order #. Gives hope.
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Re: How to turn off FT8 TX sound on zBitx

 

HI LI. Set SIDETONE 0.

HA8LK, Laci


Li Cao via <licao081=[email protected]> ezt írta (id?pont: 2025. máj. 10., Szo 4:29):

Hi!
I’m wondering how to turn the sound off? Thanks!
Li KQ4EXQ




How to turn off FT8 TX sound on zBitx

 

Hi!
I’m wondering how to turn the sound off? Thanks!
Li KQ4EXQ
Re: FT8 time differential - how to resolve?

 

Hello Leo,

Thanks in advance - every answer seems to lead to more questions (lol)!

I’m working on upgrading and switching some software, and I could use a bit of clarification:

  1. Hamlib upgrade – If I install version 4.5.4, will it override my existing Hamlib v4, or will I end up with two separate instances? Do I need to manually remove the older version before installing the new one?

  2. WSJT-Z vs WSJT-X – From what I understand, WSJT-Z might install as a separate program. Do I need to uninstall WSJT-X, or can both coexist? What’s the best practice here?

  3. Setting WSJT-Z as default – Once WSJT-Z is installed, how can I make it my default? Also, will it work with the ZBITX display?

  4. Removing older versions – If it turns out I do need to remove Hamlib v4 or WSJT-X, what’s the proper way to do that (especially to avoid breaking dependencies)?

Appreciate any help or tips from those who’ve gone through this!

73,
Miguel KP4MI
Re: QSSTV on ZbitX

 

If your zBitx is heating up try this small magnetic fan. Works well. ?:
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i hope this link works. If not due a search on Amazon.
Re: zBITX Heating

 

Try this small magnetic cooling fan:
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https://a.co/d/gF3w6X1
Raspberry Pi desktop on internal display

 

Could the zBitx display Pico code be modified to show the Raspberry Pi desktop on the internal display?
Re: add a wifi network to zbitx

 

This should guide you - it needs to be done from a comand line
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72,
Jody -K3JZD
Re: zBitx power draw

 

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

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?
Re: zBitx power draw

 

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Ooh, did you order one of these?!?


--
Buddy Brannan, KB5ELV, WRVB670?-?Erie, PA
Email: buddy@...
Mobile: (814) 431-0962



On May 9, 2025, at 6:37?PM, Travis Siegel <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?
Re: zBitx power draw

 

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?
Re: zBitx power draw

 

Gordon,

Understood, but you are describing concerns about "power consumption" which just part of the "power efficiency" calculation.

I've heard people talk about consumption all the time, but not couched in terms of "efficiency" per se.

Thanks,

Ken, N2VIP

On May 9, 2025, at 18:03, Gordon Gibby KX4Z via groups.io <docvacuumtubes@...> wrote:

Ken, anybody who’s having to work off batteries thinks this way. It’s a very important parameter to them.

I suspect the people who pay the light bill for 50 kW transmitters also think this way; but I don’t know that for sure.

When you’re trying to figure out if you can run that amplifier on that circuit or if you’re going to need to put in a 220 V circuit you think that way also

It can be difficult to figure out the actual efficiency of the final stage, but it’s not hard at all to come up with the overall efficiency

It’s one of the things that people in my neck of the woods have complained about some radios!!


Gordon kx4z
Re: zBitx power draw

 

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Ken, anybody who’s having to work off batteries thinks this way. ?It’s a very important parameter to them.

I suspect the people who pay the light bill for 50 kW transmitters also think this way; but I don’t know that for sure.

When you’re trying to figure out if you can run that amplifier on that circuit or if you’re going to need to put in a 220 V circuit you think that way also ?

It can be difficult to figure out the actual efficiency of the final stage, but it’s not hard at all to come up with the overall efficiency

It’s one of the things that people in my neck of the woods have complained about some radios!!


Gordon kx4z?



On May 9, 2025, at 17:51, Ken N2VIP via groups.io <ken@...> wrote:

?When you talk about efficiency, what are you actually talking about?

When I discuss efficiency I'm talking about a power source - 120 v, 3 amps in, 12 v, 23 amps out, for example.

I've never seen anyone compare radio efficiency - 13.8v at 21 amps in(290 watts) and comparing that to RF output (100 watt), about 34% efficency.

The Ft-818 needed 2.4 amps at 9.6v (23 watts) to generate 6 watts RF, that's about 25% efficiency, based on your model...

Ken, N2VIP

On May 8, 2025, at 17:38, Gordon Gibby KX4Z via groups.io <docvacuumtubes@...> wrote:

?Of course, the output power measurement is just probably by measuring voltage and assuming a resistance, but that’s a pretty low overall calculated efficiency, 15% or so. ? And of course part of that is that it’s having to run the other circuits but they aren’t that high power hogging! Perhaps other than the display? ? wide band transformer systems aren’t anywhere close to as good as the tuned networks we use decades ago. ? At least it seems that way.!!

Gordon kx4z?



On May 8, 2025, at 17:04, JAMES LEWIS JR via groups.io <jtlewis@...> wrote:

?At 9v and 100% I was showing 5 watts out with a current draw of around 3.8 amps on FT-8.

Cheers

Jim



On May 8, 2025, at 4:31?PM, Ben Sanders via groups.io <sandersbenjamin@...> wrote:

Do you happen to know how much power it is drawing then?
Re: zBitx power draw

 

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When you talk about efficiency, what are you actually talking about?

When I discuss efficiency I'm talking about a power source - 120 v, 3 amps in, 12 v, 23 amps out, for example.

I've never seen anyone compare radio efficiency - 13.8v at 21 amps in(290 watts) and comparing that to RF output (100 watt), about 34% efficency.

The Ft-818 needed 2.4 amps at 9.6v (23 watts) to generate 6 watts RF, that's about 25% efficiency, based on your model...

Ken, N2VIP

On May 8, 2025, at 17:38, Gordon Gibby KX4Z via groups.io <docvacuumtubes@...> wrote:

?Of course, the output power measurement is just probably by measuring voltage and assuming a resistance, but that’s a pretty low overall calculated efficiency, 15% or so. ? And of course part of that is that it’s having to run the other circuits but they aren’t that high power hogging! Perhaps other than the display? ? wide band transformer systems aren’t anywhere close to as good as the tuned networks we use decades ago. ? At least it seems that way.!!

Gordon kx4z?



On May 8, 2025, at 17:04, JAMES LEWIS JR via groups.io <jtlewis@...> wrote:

?At 9v and 100% I was showing 5 watts out with a current draw of around 3.8 amps on FT-8.

Cheers

Jim



On May 8, 2025, at 4:31?PM, Ben Sanders via groups.io <sandersbenjamin@...> wrote:

Do you happen to know how much power it is drawing then?
Re: zBitx power draw

 

Thanks!? Just wanted to double check - that's what I was seeing, but seemed high.
add a wifi network to zbitx

 

I'd like to add a second wifi network so that when at home it connects to the home network but when I'm away it would automatically connect to my phone's hotspot.
Looks like tools like nmtui, etc are not installed but perhaps I can add the config manually via the shell interface in a Ssh session and avoid installing more applications that might increase the load.
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Any ideas on how to do this?
?
TIA,
Dino
Re: zbitx, compiler optimizations #zbitx

 

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You folks are going to fix this I’m convinced of it.

More power to you! ? I would be trying to help you, but obviously you know what you’re doing and I’ve got students getting ready for final exams that I have to help. ?Meanwhile, my satellite control system is getting ready for prime time.

Gordon kx4z?

On May 9, 2025, at 14:11, Jody - K3JZD via groups.io <k3jzd.jody@...> wrote:

?
Peter,
?
My response was based on your first message, bit your second one, where you profiles the various function in ui_tick().? ?I used the brute force approach to get rid of everything except polling the key inputs.
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72,
Jody - K3JZD
Re: zbitx, compiler optimizations #zbitx

 

Peter,
?
My response was based on your first message, bit your second one, where you profiles the various function in ui_tick().? ?I used the brute force approach to get rid of everything except polling the key inputs.
?
72,
Jody - K3JZD
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