¿ªÔÆÌåÓý

Date

FS: uBITX #ubitx

 

For Sale: first run uBITX. Never powered up. Including lots and lots of extras: USB extension cable to have a socket on the outside of your case. 3D printed knobs - pot & encoder and LCD bezel (all in black filament), Sunhil's accy. kits - AGC kit, LED Meter kit, and audio mute kit. Also have the two K5BCU kits, plus including a 4SQRP HI-PER-MITE CW filter kit (none of the kits have been built. Also including a blue as well as the green LCD. Asking $125 - includes Priority Mail flat rate padded envelope - ONLY IN USA. Sorry.?
Please email me off line. I will not respond to the group. Oh, I still have the original plastic box it came in also.?

I never got around to building it and would like to sell the whole to someone at a good price.
PayPal only (friends & family - or pay my fees).
Thanks.
--
Dan Reynolds -- KB9JLO
<><


Re: Ubitx will not tune.

 

try to clear the memory locations before loading stock firmware, once you had used cec firmware.. thereis one .ino that clears eeprom locations.
regards
sarma ?vu3zmv

On Wed, 12 Dec 2018 8:53 AM d balfour <davesters@... wrote:
Have you tried it with the stock firmware? When I rebuilt the last one with the last 1.1version, The display locked up until I went back to 1.08 cec firmware with the stock display and it came alive again. The 1.1 version seems to like the nextion display. Before you start changing things start from ground zero.






Re: Ubitx will not tune.

 

Have you tried it with the stock firmware? When I rebuilt the last one with the last 1.1version, The display locked up until I went back to 1.08 cec firmware with the stock display and it came alive again. The 1.1 version seems to like the nextion display. Before you start changing things start from ground zero.


Re: Ubitx will not tune.

 

¿ªÔÆÌåÓý

Make sure they aren¡¯t shorted together. ?Check the encoder inputs then turn the knob a minimal amount and check them again, only one should have changed.


Clark Martin
KK6ISP

On Dec 11, 2018, at 6:33 PM, wayne.k9qo@... wrote:

Checked encoder signals at the connector on the cpu board. The correct 5v to 0v transitions are there.


Re: Ubitx will not tune.

 

Checked encoder signals at the connector on the cpu board. The correct 5v to 0v transitions are there.


Re: Ubitx will not tune.

 

There is no lock symbol on display, but powered down and back on. Without doing anything else, I tried to tune and it would not tune.


Re: Ubitx will not tune.

Woody
 

Good thought...? That feature "got" me for a minute when it first happened.
Power off reset should fix...
Woody

On 12/12/2018 1:00, d balfour wrote:
If you hold the function button down for a couple of seconds it locks the frequency. Per chance did you do that? There is a small lock symbol on the display.


Re: Ubitx will not tune.

Woody
 

¿ªÔÆÌåÓý

Did you / Can you check for voltage transition at the Raduino pins 7 & 8??? If not present there, look at the wiring to the encoder.? If present on 6 & 7, sounds like a Raduino problem (maybe ;)?
Woody - KZ4AK


On 12/12/2018 0:44, wayne.k9qo@... wrote:
I have completed my new ubitx and it will not tune. I have checked the messages here for this problem and have followed some of the others suggestions by installing the new CEC software. On power up, the display shows 7150khz. Turning the encoder in either direction does not change the frequency. I have checked the encoder and I get the 5V to 0V transitions on ENC A and ENC B. pressing the encoder knob in, I get the "set tune step?" however, I am unable to make any changes. Transmit and receive seem to be functioning OK on the 7150khz frequency that is displayed. HELP???
_._,_._,_




--


Re: Ubitx will not tune.

 

If you hold the function button down for a couple of seconds it locks the frequency. Per chance did you do that? There is a small lock symbol on the display.


Ubitx will not tune.

 

I have completed my new ubitx and it will not tune. I have checked the messages here for this problem and have followed some of the others suggestions by installing the new CEC software. On power up, the display shows 7150khz. Turning the encoder in either direction does not change the frequency. I have checked the encoder and I get the 5V to 0V transitions on ENC A and ENC B. pressing the encoder knob in, I get the "set tune step?" however, I am unable to make any changes. Transmit and receive seem to be functioning OK on the 7150khz frequency that is displayed. HELP???


Nextion 2.4" display,,, Neat

 

A ham friend, a Bitx owner, my Elmer, KD0YTE, gave me a Nextion display for Christmas. I was surprised at how easy the install went on my ubitx v3.

A big thanks to both KD8CEC for designing such a neat product and KD0YTE for giving me the screen.


Re: JackAl display delivery times #ubitx

Jack Purdum
 

The code for doing the calibration is not trivial, as the display is not linear. That is, moving down 5 and across 4 doesn't necessarily put you on the right cursor. By the time you get to the lower-right quadrant, it's off quite a bit. We had to account for that slop in our code.

Jack, W8TEE


On Tuesday, December 11, 2018, 1:18:37 PM EST, Neil Goldstein <neilgoldstein@...> wrote:


Thanks for the quick reply Jack.??

I pretty much expected the board+BOM method, which is fine.? I've done that before. I'm patiently awaiting the availability as I'd love to play with this.? I have an unmodified EARLY uBITX that I've had wonderful results with using an AlexLoop.??

I may purchase BOTH resistive and capacitive and see how they work out.? I think the cap screen should be OK as long as we have a way to tweak the calibration.

--Neil, W2NDG, radiokitguide.com


Re: Ashhar Farhan #ubitx

 

Ashhar as stated that he has prototype boards with the fixes that he is testing.? I have not heard of any fixes currently in production.? This was last week that I remember seeing the note from him.

I am over 65, so memory can play tricks on me at that age ;)

73
Evan
AC9TU


Re: Ashhar Farhan #ubitx

 

Attached you find one of the relays I did replace with the Axicom ones. Mine is version 3, arrived in March or April this year. I don't have a real Spectrum Analyzer but I nearly always use a SOFTROCK ENSEMBLE with it (I currently use separate TX and RX like in the sixties also during contests) and the third harmonics of the 40m on 15m was likely down just 25db or so. The Axicom relays are better.


Il 11/dic/2018 20:25, "Lee" <mr.olson@...> ha scritto:
My V4 board got here today and I compared the relays with my V3.? They are the same.? I thought the new boards shipping were supposed to get new relays or is there a change on the board that fixed the problems without changing the relays?
--
Lee - N9LO? "I Void Warranties"

?


Re: Ashhar Farhan #ubitx

 

My V4 board got here today and I compared the relays with my V3.? They are the same.? I thought the new boards shipping were supposed to get new relays or is there a change on the board that fixed the problems without changing the relays?
--
Lee - N9LO? "I Void Warranties"

?


Re: CW Zero Beat

 

New version is now in stock.

?


--
David

?N8DAH


Re: JackAl display delivery times #ubitx

 

Thanks for the quick reply Jack.??

I pretty much expected the board+BOM method, which is fine.? I've done that before. I'm patiently awaiting the availability as I'd love to play with this.? I have an unmodified EARLY uBITX that I've had wonderful results with using an AlexLoop.??

I may purchase BOTH resistive and capacitive and see how they work out.? I think the cap screen should be OK as long as we have a way to tweak the calibration.

--Neil, W2NDG, radiokitguide.com


Re: JackAl display delivery times #ubitx

Jack Purdum
 

Neil:

We have the board in production and we expect the board to be produced this week. It usually takes a week after that to get the boards shipped. I'm not sure how long the testing takes, as we always bought bare boards before. Still, even allowing a week for testing, it should be less than 3 weeks before we get our supply of boards. We will immediately send most of the first run to QRP Guys, holding back just enough to serve the builder's group here.

My experience with cap touch screens is that they seemed less sensitive to the exact X/Y coordinates. Indeed, cap screens start sensing a touch long before you actually touch the screen. We have a lot of buttons on the screen,

Inline image


and for the 5" display, we need to read coordinates pretty closely. The difference will be evident in the libraries. I would expect users to experiment using different display (and with other features/sensors). There are also about a dozen free I/O pins, too.

Attached is a BOM for the parts that are NOT on the board. It would have cost more to have them assembled at the factory (evidently, they pose problems for pick-n-place) than to push that cost onto the user. Sorry, but we're not going to make much on this anyway and we've eaten enough of the cost already. If we sell 1000 boards (unlikely), Al and I will probably make about $1.25/hour for our hardware/software development time. Don't misunderstand me, we both consider this a labor of love and we've enjoyed doing it. That said, since everything is open source, including the DSP code, it's you smart people out there who will improve it even more.

Anyway, take a look at the offboard parts BOM. You probably have some in your junk box already. If not, buying new will add just under $13 in parts.

Jack, W8TEE

On Tuesday, December 11, 2018, 11:45:40 AM EST, Neil Goldstein <neilgoldstein@...> wrote:


Jack,?

Two quick questions, and I apologize if I missed these previously.?

1: Why resistive screens?? Can we do capacitive or does that change something on the back end?
2: When will the whole sh'bang (the boards at least) be orderable???

Thanks!


Re: JackAl display delivery times #ubitx

 

Jack,?

Two quick questions, and I apologize if I missed these previously.?

1: Why resistive screens?? Can we do capacitive or does that change something on the back end?
2: When will the whole sh'bang (the boards at least) be orderable???

Thanks!


Re: UBITX Current Production (spur fix ?) #ubitx

 

Yes, the relays now shipped could be better.
Or could be worse, it's pretty much all conjecture.

The Axicom datasheets do talk about RF isolation.
The datasheet for the new relays does not.
Most of these low end relays assume you are switching at DC or audio frequencies,
and don't bother with the extra expense of addressing RF isolation.

Jerry


On Tue, Dec 11, 2018 at 08:21 AM, Evan Hand wrote:
It was my understanding that the significant difference was how the relays were constructed internally: the relays specified as the replacement had the contacts and wiring closer to the circuit board.? It was the physical layout that made the difference.? That would not show up in a normal relay specification.? It could even be changed if there was a "process improvement" at the relay manufacturer to change the configuration of the relay.
?
Unless you break open one of the relays, or find a diagram that shows the internal construction, there is not a way other than try them to verify that it helps in the RF feedback problem.
?
Above is my understanding; it could be wrong, so use your own judgement/research to verify.
?
Evan
AC9TU