This is still a draft, need to double check the encoder footprint...? I'm not sure what encoder is in the radio, and the footprint I have needs a bit of tweaking to fit the right encoder.? (In theory, most any encoder would fit, but the tabs that hold it in place seem to vary a bit from one manufacturer to the next).? Also need to add more style points :-).? I'll be busy all weekend (might actually be on the radio for a bit), so I'll have to come back to this next week.? It's looking like price might be around $4usd+shipping for blank boards, and maybe ~$10 for board w/ parts (depending on which encoders are picked).? Very preliminary numbers.? I'll want to make sure I get a few and test it out before a order a bunch, so probably a few weeks away from being a real thing.

Turns out I do have some time today.? Pulled my radio apart and here's the correct schematic.?


While 5v is ran to pin 9, it doesn't connect to anything on the encoder board.? I should have a PCB drawn up shortly.

开云体育

So here's what I'm currently assume the schematic to look like.? I need to take my radio apart to verify, but I won't be able to do that for a few days.? If anyone else knows if this is correct, let me know.? There was discussion in another thread about adding caps and resistors.? Any thoughts there?


The area I'm not totally confident is the 5v line.... does that connect to the switch??

Have you tried running on battery power to eliminate power line/supply noise?

73
Evan
AC9TU

I have a persistent birdie at the top of the passband.? It shows up on all bands and doses not move when tuning.? It is not audible because it is too high in frequency to be heard but, it shows up in the passband.? I can't help but think it is desensing the receiver.

Does everybody have this birdie or is it just me?? Is this WAD(Working As Designed)?

I connected a dummy load to make sure it wasn't something from the outside world.

These are the pictures before I replaced the noisy 5V converter.? Replacing did clean up a lot of the background grass but didn't get rid of this birdie.

I


Here I tuned around 21.167 to show all of the other audio moved but not the birdie.

With my latest improvements the world map now has?pins (dots).
My version for the sbitx v3.02 software?runs on the sBitx v3 box (my is upgraded from v2) with the original 32 bit OS.

The web interface in FT8 mode now looks like this:

The software and description can be found on github

make sure to scroll down to the README and read to the end.

Thank you Evan
--
'72

Hi Aaron,

I found this page on the internet:
.

Based on that information, the sBitx would work.? You need to be authorized to use the frequencies, as they are outside of the Ham bands.? You can adjust the band frequency in the hw_setting.ini file.? You would also need to verify signal purity on those frequencies.? The LPF should be OK as is.

Reading the intended purpose of MARS, the 25-watt output of the sBitx would not be what they want.? One hundred watts would be the lowest level, with 400 to the legal limit and directional antennas preferred.

Gordon Gibby, KX4Z, has posted several topics on WinLnk and other public service features in this group.? I suggest searching for his posts to learn how to contribute to emergency communication efforts and contacting RACES or other groups in your area.

Please let me know if any of the above info is incorrect, and I will remove this post.

73
Evan
AC9TU

Hi Calvin,

You do not need to "erase" the Nano. Simply load a new program on it, and the old program will be erased.

The stock TFT display does not work with any of the KD8CEC programs. You can load the N8ME and N8ME with VU2GAO mods. Both are available in the group's files section.

The "stock" program is available here:


Load it to go back to the way the V6 is shipped.

73
Evan
AC9TU

Hello all, hope all is well.?
For once I'm not making a topic about some BITX radio that I broke. Well my sBITX did break but I'm waiting on Farhan to get back to me to see if my repairs work. He is really busy so that will wait.?

I have a friend who asked me a good question. What would it take to modify the sBITX V3 to transmit on MARS and SHARES frequencies. I don't know much about MARS and this is the first i heard about SHARES.?

I live in the shadow of a large USAF base so my community is very patriotic. I looked into joining MARS back in 2015 but the guy who runs it told me that QRPers are not allowed so I went elsewhere.?

MARS and SHARES do not publish the frequencies that they operate on. I'm not sure how they communicate with each other if they don't know what frequency to meet on unless they email or text each other, but in an emergency email and text messages may not be readily available. I bet that the members of those groups know how they work. From what I was told MARS operates from around 2 MHZ to 14 MHz. My friend suggested Low Pass filtering to suppress harmonics for 1.5 - 2.3 MHz, 2.3 - 4.4 MHz, 4.4 - 8 MHz, 8 - 14.6 MHz, 14.5 - 21.6 MHz and 21.6 - 30 MHz.?

I'm unsure how to add the LPF to the finished sBITX but I am interested in learning. I have already said that the sBITX is the best radio that i have used, that includes a bunch of Elecraft and ICOM rigs. In my opinion adding MARS, perhaps an add on board like some other radios have, would expand the horizons of this great little rig.?

Perhaps someday this could lead to a 144 MHz option for the sBITX. 144 SSB is pretty active in my state and I would like to be able to join in without lugging a transverter around, but that can be another topic.?

So please let me know about potentially adding MARS to the sBITX.
Thank you
--
'72

As a newbie with the uBITx v6, I was eager to try different firmware and I loaded a version that was probably not compatible with the original TFT display, leaving me with a white screen. ?After several attempts I managed to load a working version, but the touchscreen doesn’t work (ie, none of the buttons work). ?If I press and hold a button, I will eventually get a beep, but nothing else. ?Is there a way to completely erase a Nano to start fresh or have I fried something?

i figured it out? no need for help

bob

how do you control the sbitx v3 with a web browser?? i understand there is a url to use with chrome but i can not find what it is anywhere, help

bob

I'll take a look at 2.0 beta.? Thank you.? I picked up a tinysa, that should do the job.
Thanks for sharing your stuff.

Thanks Evan and everyone.

Any ideas on the higher noise on 20 and 30?

Looking at the search function I see somethings about Vara and Winlink but am having a problem with How to install, How to run, and does it work?

Thank you
Jim
KE0VVU

Not sure my message sent. Do you still have the v6 ubitx? Any photos?
John N4HNO

I have a ubitx V6 for sale. Full kit assembled but never transmitted with ($100 or Bo). Also have an unused Antuiinio for sale $50.