A 45 baud FSK RTTY signal changes frequency each 22mS.? The shift for RTTY is 170Hz. From my limited experience (not consulting the datasheet) I expect the si5351 would handle this easily.? ?The trick would be getting the timing of the changes right.? ?A software timer such as the Arduino delay()? may not work as it is pretty inaccurate with small arguments.? ?A hardware timer that generates interrupts should do the trick.??It would be easy to try.?

73 Paul VK3HN.?

Ok thanks, then I would say your click generator is working fine, and most likely your receiver chain.

I would double check the calibration and more likely the BFO frequency.

There may be better methods, but I would reload the factory default sw, disconnect the PA power cable,? press and hold the push button at startup, do a factory calibration using your other Trx, then go in the setup menu and do a calibration and BFO frequency alignment as they return to defaults under that software.

Hope that helps,

73, John

Am I missing something? If you don't have a real RTTY machine why not use the free fldigi program like I do?
Bo W4GHV?
Missing my old Model 15 machine and CW rig with a varicap.

John,

If I am writing a function that others might want to use, how do I know
which analog input to look at for a trigger by the CW key?

Does my function need to look at both A3 and A6 just in case? Or do I
use one or the other and let the user worry about fiddling with my code
to make it work?

It's important to have a *standard* to write to.

tim ab0wr



On Mon, 14 May 2018 13:54:44 -0700
"John" <vk2eta@...> wrote:

I disagree that the original software is a good starting point for
building on as its tuning and keying section need work.

I think the uBitx should be shipped with a software that best
promotes it's capabilities. That way the user can enjoy it fully
without having to go through an upgrade process that he may not be
willing to go through.

Making room for later software changes is easy if, as said above, the
software is segmented and shows the "memory cost" of each option.

As an example below is the start of the my ubitx_20.ino file, based
on Ian's 1.061 version.

It is easy to make room by commenting out options to insert one's own
code if desired, or simply enable "extra features".
//================== Compile options for adding/removing features and
saving memory =====================
//When there are no hardware modifications (i.e. wired as per the
HfSignals web-site) // If UNdefined, or commented OUT, assumes that
the CW key is connected to the PTT input (A3) to free-up A6 for //
the handsfree option here. (note that A6 could also be used for SWR
or supply voltage monitoring). No memory impact.

raduino functions- those visible.? That is to say, tune up/down, menu select.? Receiver does not receive, static can be heard, some birdies can be heard, noise level goes down when antenna disconnected.

Sorry John, but when you say all functions work, you mean the display functions AND receiving or just display functions?

73, John

I noticed in one of the alternate versions of the uBITX software the WSPR mode was implemented by sending the frequency shifts to the SI5351 chip registers. Have not looked into if the SI5351 chip, and the related uBITX software, can reliably change the frequency at the rate needed for RTTY, but if so, adding a RTTY mode to the software could shift the frequency digitally using the CW key jack to make the mark/space frequency shifts.?

thanks for the info, John.? I'll take a look at what you've listed, but, as per usual, I left a couple of things out of my problem description that might help diagnose my issues.? I was able to load CEC 1.06 to the raduino, and it appears all functions work, so far as I've taken it.(no transmitting)? Does that add any applicable info?
Thanks

The microphone has a polarity I read. The lead connected to the case is ground.

开云体育

Awww maaaaaaaan-? Thanks Jerry- I'll see if my 735 will pick it up!? And it does!!? right smack dab at 11996.5

Jerry and I were replying at the same time. Do his test first.

73, John (VK2ETA)

Hello John,

I suspect that there is no communication with the Si5351 or that the chip is dead for some reason.

Since you know your way around computers I am assuming that you have installed or can install the Arduino IDE and upload a program.

In the files section of this forum I have uploaded a diagnostic program (see link below) that will perform the following tests, in sequence, on the I2C bus between the Arduino and the Si5351 clock generator:

1. Is the bus locked by a device other than the Arduino (could be a short on the bus lines)?

2. Is the Si5351 accessible at its default address?

3. Can we write to a register of the Si5351.

That would give you some clues as to where to search for the problem next.

All the best,

73, John (VK2ETA)

Program is located at at?/g/BITX20/files/uBitx%20Diagnostic%20software%20by%20VK2ETA.

Some pointers:

How to setup the Arduino IDE and upload a sketch:??

The original software to be re-loaded after the tests (assuming this is the software you have in the Raduino):?https://github.com/afarhan/ubitx

Google is your friend. I2C - superscript the number, I-squared C, or IIC - Inter-Integrated Circuit. Used mostly for linking complex ICs on a PC Board. An I2C peripheral is therefore an external device that communicates with its Mainboard using that bus - multiple devices can use it within a project.

That Fluke 115 is good to a max of 50khz as a frequency counter:
? ??

You want something that can count at 1000 times that fast if you want to see clk#1 and clk#2.
If you have or can borrow a shortwave receiver, bring the whip antenna within a few inches of clk#0 (without touching),
see if you can hear the BFO at around 11996.500 khz.? Use the "SSB" mode of the receiver if it has one
and you will hear a tone, though AM mode will work and you will hear the receiver go quiet has it hits that carrier.

Lots of things that could be wrong, but that's the first thing to check.

On many of these, the BNC antenna connector is not quite machined right, try wiggling the antenna cable.
(That's really an issue when transmitting for those pushing the final to higher power and worried about SWR.)

Jerry

I wonder if she can copy code as well as she can send it. I didn't see an antenna attached to her chair. Maybe her husband is a ham.

I’m beginning to see how a 3D printer and a CNC router could be really fun and useful tools. Nice work.

First effort. Already planning how to build a better version.

My receiver hasn't worked since I got the kit.???I've put a frequency counter (Fluke 115 multimeter) on the raduino/ubitx connector, and clk0, clk1, and clk2 all have no signal. Display is lit and counts. The raduino is in the right position on the header (per mapping the ground pins on both boards), and the radio does not receive. Regulator 12VDC in, 5VDC out. Can anyone make a suggestion to get this radio up and running?? I'm pretty savvy when it comes to computers and electronics, but...? arduino is not currently in my skill set.
Thanks!