Greetings from sunny South Africa :-)

Please keep map active and idea of showing station status will be good as well.

Seems I entered my details some time ago but then forgot about using... Idea of a 'reminder' would likely be appreciated by many.

Keep safe and thank you again for creating.

P.S. I accidentally added a new entry whilst attempting to navigate on mobile and discovered that it is possible to delete point simply by logging in... Hope there is some sort of 'master back-up' in place in case of accident or worse still deliberate vandalism...

73

Hi Ed,

You haven't mentioned your antenna, however it could be like others have said and due to common-mode current getting into some of the control circuits.? Do you have a dummy load you can try out with?? That would be good as when it acts up again, you could switch in the dummy load and see how works then.

Another option, if you don't have a dummy load, would be to lower the power out a bit and see if that helps keep it from happening.

73 and have a good day,


Mark

Added myself even though I've just got my ticket and I'm still waiting for my uBitx to arrive in whatever version it is when India's lockdown ends.
Fascinating to see who has what where. And there's someone just down the road from me.
Leo
M7NEZ

Yes, I would use it.

73
Evan
AC9TU

On Fri, May 15, 2020 at 01:59 AM, Ashhar Farhan wrote:

At some point, we will have?the capability?to map the 'live' status of bitxes around the globe too! then we can call them!

- f

I like that.? We could do that very crudely now.? It takes about 3 clicks to change your user icon.? All we need is an icon indicating live and the operator just changes to it when they are live.? It won't be perfect and the key is keeping up the discipline to change it back when you're done.? I'll try to cobble something together.? Group, would you use that?
?
--

Ed,
As Curt suggested, it could be RF feedback into the control circuit (Nano) of the rig.? You can try the different bands as Curt suggested, as well as a dummy load.? I found on my v4 and v5 that I had the issue with an off-center fed dipole.? I did not have the issue on a properly shielded dummy load.? I would try the dummy load first if you have one.

As to the relay construction, it is spring return.?

You should also note that the relay is pulled in on the first key down, and then held in until after the adjustable time delay.? The actual signal is sent by the keying signal from the Nano.? This unbalances the first mixer and allows the RF frequency set by the Nano to go directly to Q90 and the rest of the power amplifier stages.? The keying signal is digital, not through the relays.

I do not have a v6, so cannot comment on the accuracy of the schematic.? I would recommend that you download the PDF version from HF Signals.? I have not found any errors in the v4 or v5 schematics.? The v6 is basically the v5 with a redesigned Raduino, and moving most of the controls and audio connections to plugs on the mainboard.? The relay layout and control should be the same.

Just suggestions, please use your own judgment.
73
Evan
AC9TU

Hi Reed,

unfortunately I don't have an oscilloscope at hand right now. I ordered a few Nanos as replacement instead.

I wonder a bit about the numbers in the wide bar separated by comma in your YT clip:
I bet these are the selected x-y-coordinates on the display? Mine are in the range 179-344 and 41-126 only.

73 de Urs

I didn't know of its existence. I added my location.
Please keep it going.
Jep, IZ0WIT

Keep it going, Doug !

73 - Jean F5PCX.

I believe they are not taking orders until the lockdown in India is lifted.

There is a post about somewhere in the Groups.io pages plus there's a note on the website about there being no shipping currently for the same reason
--

The first thing I'd recommend checking on the nano would be the oscillator Y1 on pins 7/8 of the ATMega (if you have access to an oscilloscope?), since if that's not working right, resonating at 16MHz, it could make the uC do all sorts of wonky slow stuff.


Reed

Hey, I'm trying to give Farhan some more of my hard earned money for a brand new uBitx V6, but the Paypal link is broken.

It just goes to the Paypal home page, and that's it.

I have had two k3 relays go bad on different ubitx. The numbering has been unique but the relay only fits one direction.?
The relay is in receive without power being carried through the coils. When you apply power it turns off the receive circuits and turns on the transmit.?

The other pins in the relay disconnect the antenna to the receiver when in transmit.?
--
73
Dave

Hi Reed,

many thanks again for your feedback.
I just watched your clip on YT () and wow(!) the feedback of the touches and encoder tweaks is amazing compared to the performance of my Nano while running the same sketch. Mine is like running in very slow motion closed to be frozen. I will check on my Nano, unfortunately I don't have a spare one.

73 de Urs

Ed

I suggest trying different bands and antennas, if you have more than one, before blaming the relay. Another possibility is RF feedback into the raduino. If indeed you have a stuck relay, as I did once, gently tap on it. Mine was cured, so far okay.

If you study the board, you can see which relays belong to the low pass filters, then the TR relay will stand out.

Curt

Hi,

What did you do to get the relay back in receive mode?

73

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