@Gary you CAN use PowerPole connectors to prevent reverse connections.
Just use it in an hermaphrodite configuration.
I suggested this as a standard in the Italian ham bullettin (2019, Vol 7/8)
Unfortunately the article (attached below) is in Italian, but looking at the pictures should suffice.?
|
Re: Advice and Opinions on the next iteration of the sBitx
- push button to shut down the PI
- three position power switch (to limit draw when just fiddling with the sw):
? ? ? ?1 : OFF
? ? ? ?2: digital (PI) only ON
? ? ? ?3: both digital and analog ON?
- 5W VHF (possibly with separate antenna input)
- dedicated split for repeaters offset
- 100W HF
- fan (with speed monitor / alarm)
|
Thanks, Ragav. I think I carried the files forward from V2 as delivered to V3 64bit. However, I did not realize that setting were by unit. I will go to my backups, find the original, and check the values.
|
Bruce,
?
Each unit is individually tested and calibrated with it's own values in the hw_settings file. That said, there is usually very minor deviation from the values in a given batch.
?
As OM Gyula suggested, it's a good idea to backup the settings for your device before you make any modifications.
?
73,
Ragav
VU3VWR
?
|
There's a whole bunch of ways to do the same thing.? This would work just fine and be cheap.? But you'd also see a voltage drop across 2 diodes, so upwards of 1.4v drop.? Lets say the radio draws 7A through the diodes, that's a power loss 9.8W.? When you're
running on a battery, that's a pretty large power loss and a fair amount of heat to have to reject.? Of course that's only at full-duty and on SSB it wouldn't be a big deal, but if you're running digital modes, that would be a lot.
toggle quoted message
Show quoted text
I am surprised no one so far has used the simplest way of protection.
Use a suitably rated (amps) bridge rectifier, hard wire + to rig +
hard wire -ve to rig -ve? the two AC tags of the rectifier then connect
to the power supply.......either way round makes no difference, the rig
will always see the correct polarity.? Fuse as you normally would.
My 2 cents worth from this side of the pond.
Dave G4JBE
|
Re: Discord communication
On Thu, Sep 19, 2024 at 01:39 PM, JJ - W9JES wrote:
Hi Nick. I sent you a private message to your email. I am willing to help.
Nick is all set. Feel free to contact me at w9jes@... if you need help.? w9jes ATarrl.net in case the group redacts my email.
|
I am surprised no one so far has used the simplest way of protection.
Use a suitably rated (amps) bridge rectifier, hard wire + to rig +
hard wire -ve to rig -ve? the two AC tags of the rectifier then connect
to the power supply.......either way round makes no difference, the rig
will always see the correct polarity.? Fuse as you normally would.
My 2 cents worth from this side of the pond.
Dave G4JBE
|
The keyer in JJ's dev branch feels promising. Played around with it on a dummy load and it seems to key correctly at 25 wpm. Planning to activate with it over the weekend and will report back.?
|
On Thu, Sep 19, 2024 at 08:17 PM, Bruce W4BRU wrote:
I've seen comments that implies the contents of? hw_settings.ini are individual by serial number, that is by unit. That means that each? board was tested at the assembly point and the setting entered for that unit at that point. Is that true or is it the same for all the units of that model? It's important to me because I have V2 hardware slightly modified but with JJ's 64bit V3 software. This weekend I plan to see if I still have the original hw_settings.ini file and compare it to what I have on my V3 installed version. I need to determine what is correct.
The manufacturer can give you the correct answer to your question. I received the v2 device at the beginning of production, when we had not yet received an adjusted device (April 2023), I had to do this myself. The description of the setting can be found on the sbitx.net page.
This setting is not required for v3.
--
Gyula HA3HZ
|
Re: Discord communication
Hi Nick. I sent you a private message to your email. I am willing to help.
|
Re: Discord communication
Is a Discord account necessary for me to access the conversations?? I've tried off and on for six months or so. I do have a Discord account, but when I try to access the BITX20 channel, I'm asked to verify my account by entering my email and phone number. I do that and I'm then informed that my email is already registered. I already know that. Discord's Help suggested I get a different email address and different phone number, so I did and now I have two inaccessible accounts. I don't want to buy a third phone.
Any secret?remedy to this problem?? Sorry to vent here, but I get no help from Discord's "Help", so I have to try here or abandon the idea.
73
Nick, WA5BDU
On Thu, Sep 19, 2024 at 10:54?AM Jeff Duce via <jefe_de_estado= [email protected]> wrote:
Can you send the updated link?
|
On Thu, Sep 19, 2024 at 07:25 AM, HA3HZ wrote:
I've seen comments that implies the contents of? hw_settings.ini are individual by serial number, that is by unit. That means that each? board was tested at the assembly point and the setting entered for that unit at that point. Is that true or is it the same for all the units of that model? It's important to me because I have V2 hardware slightly modified but with JJ's 64bit V3 software. This weekend I plan to see if I still have the original hw_settings.ini file and compare it to what I have on my V3 installed version. I need to determine what is correct.
?
(I kept the V2 finals for the 40 or so watts on 80, 40, etc. but installed the dual-ended Zener diodes to protect the finals from excess drive voltages.)
?
73, Bruce, W4BRU
|
Re: uBITX Digital Adapter Board pinouts
What ubitx do you have? I'm betting you did not make it and that its a Chinese copy from ebay? I have a V5 board and box. Everything has to be wired by hand. CAT control for mine is directly on the Radiuno board buried inside the box. The Digital Adapter Board brings out USB/AF/etc to a set of connectors at the back - once you wire them up.
|
Mark Phillips <enicomms@...> added the photo album
NI2O's mods
: Soundcard and general USB mods done to my V5
|
On Wed, Sep 18, 2024 at 02:39 PM, AndyH wrote:
With respect, Jeff, you'll not get BITX20 community review if you post something to a discord group most here don't use.? Why not post it here?
Andy, it's his decision to do as he chooses. If you have an issue with it, consider creating something yourself and sharing it here, instead of derailing others' threads with irrelevant comments. You could have sent him a private message, which is a feature available on 开云体育. I don't think anyone here should assume the authority to give orders to others.
?
?
-JJ
|
I have a sbitx. Have I any chance to listen vlf signal with my hardware and some software trick (gnuradio or similar)?
Thanks
Carlo IS0HLX
|
On Thu, Sep 19, 2024 at 10:40 AM, AndyH wrote:
This *can* be an email feed. I have all except admin messages turned off, and read what I want, when I want, on the website. It's also where the wiki, files, and search lives. There's also a chat function here!
?
I use discord as well (and IRC!), but it's/they're useless for anything where one wants to maintain "corporate knowledge" older than a day or three.? It also fragments the info, ultimately making it harder for new folks to find info they need.
?
I'm still studying posts here from many years ago as I slowly learn how to design and tweak the blocks for my multiple uBITX radios. I'd never be able to find similar info from more than a couple of weeks in a discord channel.? I used to coordinate with remote team members on discord and IRC...both are impaired relative to this platform.
?
73, Andy
?
?
?
Unfortunately, the chat feature doesn't work on 开云体育. There's also a separate Facebook group managed by someone else. Therefore, saying these platforms are useless is unfounded. I do agree that the information here is searchable, especially via search engines, whereas Facebook and Discord are not. However, Discord offers additional benefits, such as screen sharing, real-time chat, and the ability to assist each other quickly. These are valuable supplementary features to this group.
?
?
?
-JJ
|
Re: V3 Desktop Time Incorrect
On Thu, Sep 19, 2024 at 12:06 PM, Daryl wrote:
I had this same problem with computer time not in line with local time.
UTC time was correct but local time was 2 to 3 hours off. I located the .profile file
and at first changed the “Phoenix” location to my EST of “New York”.
This gave me UTC time on the sBitx app and UTC on my computer.
?I then commented out the entire line and rebooted.
The UTC stayed the same but now I have my local time on the computer which is?
what I was desiring to accomplish.?
Thank you for the good information.?
Daryl, N4NVS
?
sBitx Toolbox has a script to change this automatically as well.? See ?
?
?
?
-JJ
|
Re: V3 Desktop Time Incorrect
I had this same problem with computer time not in line with local time.
UTC time was correct but local time was 2 to 3 hours off. I located the .profile file
and at first changed the “Phoenix” location to my EST of “New York”.
This gave me UTC time on the sBitx app and UTC on my computer.
?I then commented out the entire line and rebooted.
The UTC stayed the same but now I have my local time on the computer which is?
what I was desiring to accomplish.?
Thank you for the good information.?
Daryl, N4NVS
|
Re: Renewed attempt to hack together a workable PA
Thanks for the heads-up Allison On Thu, 19 Sept 2024 at 15:54, ajparent1/kb1gmx via groups.io <kb1gmx@...> wrote:
Ravi,
Do not go above 28V unless you have lots of spares.
But so you know I've seen at 20V 25W during testing and for fun
and attempted destruction 28V where I got 40W easily.
NOTE: you need about 4X the heatsink area or more to stay
up there. Adding a copper heat spreader helps. at 24V when
no signal TX 6W of heat (due to bias current). That high the
BS170s are working at fairly high voltage.
--
Allison
------------------
Please use the forum, offline and private will go to bit bucket.
-- I'm here to add more value to the world than I'm using up.
|
Bruce W4BRU
HA3HZ
Nick Kennedy
Mark Phillips
Daryl