Date   

Tuner Kit Progress

K9HZ <bill@...>
 

So for all the folks that sent me emails about the cheap auto tuner kit... i made some progress this week.  The cores came in and i would a staggered set that total 20 uh.  All checked out and tested.  Very simple to wind. I decided not to use chip capacitors.  They are expensive in the size needed to carry the current needed at large values. Silver mica capacitors are cheaper and easier for most people (like me with marginal eyes) to solder to boards.  Plus the space savings is almost nil. I also found some cheap latching relays so the current draw stays low and the price of the kit stays in the sweet spot.  This week ill design the discriminator (phase and magnitude) for power reading and tuning.   More next weekend. 

image1.jpeg


Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ

 

Owner - Operator

Big Signal Ranch – K9ZC

Staunton, Illinois

 

Owner – Operator

Villa Grand Piton - J68HZ

Soufriere, St. Lucia W.I.

Rent it: www.VillaGrandPiton.com


email:  bill@...

 


Re: BITX QSO Night, Sunday, January 7, 7pm Local Time, 7277 kHz in North America, 7177 kHz elsewhere

Arvo W0VRA
 

I watched the band go dead after it got dark here.


Re: Ubitx case #ubitx

M Garza <mgarza896@...>
 

The cases you see are for the bitx40.  They will have a ubitx case, shortly.  It has not been released for sale, yet.  It is supposed to be released sometime his month.

Marco - KG5PRT 

On Jan 7, 2018 8:13 PM, "Richard Lawn" <rjlawn@...> wrote:
I’m considering ordering this great looking all band semi kit. I’ve built s number of kits of varying levels of difficulty. I noticed that there are some cases for sale on eBay but it’s unclear if these are compatible with he ubitx. Anyone know?
73
Rick, W2JAZ 


Ubitx case #ubitx

Richard Lawn <rjlawn@...>
 

I’m considering ordering this great looking all band semi kit. I’ve built s number of kits of varying levels of difficulty. I noticed that there are some cases for sale on eBay but it’s unclear if these are compatible with he ubitx. Anyone know?
73
Rick, W2JAZ 


Re: Tuning reversed issue

Jim Sheldon
 

After Ron helped me get over the "stupids" and I finally learned how to properly compile & upload stuff to the Raduino, I now have Ron's mods running and he's fixed a lot of little annoying things (annoying to me anyway).  In between bricking & fixing the rig (all firmware, no hardware) I managed to make a couple of real nice 20 meter SSB QSO's and also a couple of 40 meter CW QSO's as well with it.

I heard a lot of RTTY (contest this weekend) and sure wish there were at least 5 more digital pins on the Nano.  Then it would really easy to implement a good CW Keyer and even implement true FSK for RTTY.  You'd still need a computer with sound card running something like Mako Mori's (JE1HHT) MMTTY program, but that would really work well.  Hardware FSK would be much cleaner to implement than tones into the SSB section.  As wide as the filter is, I'd be wary of the 2nd and maybe even 3rd harmonics of the tones being transmitted at the same time as the fundamentals.  That would really create havoc on the bands especially during a RTTY contest, not to mention incur the wrath of the FCC as well.

Jim - W0EB

This little rig just keeps getting better and quite rapidly too!


Re: uBITX for sale

Jim Sheldon
 

Sorry Bob,
I already sent him the money - I usually don't get that lucky, but I was in my email client when Fred's message hit and it was too good to pass up.  I do have one coming in the 2nd batch from HF Signals but no clue when that will ship - LOL.   This way I'll have the backup in case I brick the first one - (I did brick it learning how to compile and upload firmware to it today, but thanks to some nice off line help I have that sorted out now and I'm back up to normal.

Jim


Re: BITX QSO Night, Sunday, January 7, 7pm Local Time, 7277 kHz in North America, 7177 kHz elsewhere

lostfrogsrecords <dave@...>
 

I listened to both, nothing heard.  We are having a significant warm up here, going to be above freezing for a few days.  I will check the antenna tomorrow!

Dave, KI4PSR


On 1/7/2018 7:10 PM, Tom VE3THR wrote:
Is everyone QRV on 7.277 or 7.177? Never think to try 177. Still keeping the freq warm up here. temp up to +19 deg F outside - heat wave!


Re: No amps on power up #ubitx

Kirk
 

All - turns out my ammeter was reading 0.0A on a simple D-cell and lightbulb circuit. Sorry for the noise!


Re: ubitx mic gain

Paul Smith
 

Thanks Dave...I'll play around with higher value dropping resistors and see how I fare.

Paul ZS2OE


Re: BITX QSO Night, Sunday, January 7, 7pm Local Time, 7277 kHz in North America, 7177 kHz elsewhere

Tom VE3THR
 

Is everyone QRV on 7.277 or 7.177? Never think to try 177. Still keeping the freq warm up here. temp up to +19 deg F outside - heat wave!


Re: BITX QSO Night, Sunday, January 7, 7pm Local Time, 7277 kHz in North America, 7177 kHz elsewhere

Tom VE3THR
 

Al VE3RRD and Tom VE3THR are in QSO on 7.277 right now. Not hearing anyone anywhere YET! 00:58 HRS UTC.


Re: BITX QSO Night, Sunday, January 7, 7pm Local Time, 7277 kHz in North America, 7177 kHz elsewhere

Scott McDonald
 

Nothing here in Illinois either- maybe 3 or 4 hours earlier sometime?  Band is awfully long here by 7p. 73 Scott ka9p

Make something good happen!

On Jan 7, 2018, at 6:24 PM, lostfrogsrecords <dave@...> wrote:

Nothing here in Brentwood TN, EM65 at 6:20 CST.  Using my uBitX, meter shows 8-10W, nothing but static.

Dave KI4PSR


On 1/7/2018 6:12 PM, John P wrote:
Anyone else on? Nothing but noise here!
--
John - WA2FZW


Re: BITX40 Display problem

Michael Hagen
 

The backlight resistors are not usually that high in value? 

Unhook all 12V power and run Raduino off of computer USB, adjust contrast pot to see if any thing shows.

It always is almost full up, near the end of the pot.  Too much you will see some background around digits.

The contrast might need to be re adjusted when you get back on Raduino 5V Regulator.

73's

Mike, WA6ISP


On 1/7/2018 1:36 PM, Dave Bottom wrote:
If you are sure all of the pins are correctly seated from the Raduino to the uBITX RF board, then check the Contrast adjustment on the rear of the Raduino.

I'm going to try a different series resistor for the Display back-light as now it is bright enough to read a book by.  hi hi
I think the default resistor is 110 Ohms and it is reported that 470 Ohms might be a better value to reduce the brightness.
Then Contrast will likely need readjustment.

Dave WI6R

On Sun, Jan 7, 2018 at 1:27 PM, credwood@... via Groups.Io <credwood@...> wrote:
I've just connected up the kit I received from India.  I haven't tried
transmitting yet, but on receive whilst I am hearing signals, the
display is illuminated but there is nothing being displayed (e.g. no
frequency etc.).  I can see a red LED is illuminated on the Arduino sub-
board.  As far as I am aware I've not done anything I shouldn't, and I
have absolutely zero knowledge of Arduino (a black box as far as I am
concerned).  Any ideas please?

Many thanks in advance.

73 de Colin G6MXL








--
73 Dave WI6R

-- 
Mike Hagen, WA6ISP
10917 Bryant Street
Yucaipa, Ca. 92399
(909) 918-0058
PayPal ID  "MotDog@..."
Mike@...


Re: BITX QSO Night, Sunday, January 7, 7pm Local Time, 7277 kHz in North America, 7177 kHz elsewhere

lostfrogsrecords <dave@...>
 

Nothing here in Brentwood TN, EM65 at 6:20 CST.  Using my uBitX, meter shows 8-10W, nothing but static.

Dave KI4PSR


On 1/7/2018 6:12 PM, John P wrote:
Anyone else on? Nothing but noise here!
--
John - WA2FZW


Re: BITX QSO Night, Sunday, January 7, 7pm Local Time, 7277 kHz in North America, 7177 kHz elsewhere

John P
 

Anyone else on? Nothing but noise here!
--
John - WA2FZW


Re: Test about WSPR on Stnad alone uBITX without any device

Joe
 

Great stuff!

Thanks for sharing

Joe
VE1BWV



On Jan 7, 2018 at 12:23 PM, <Ian Lee> wrote:

It is just beacone, Since wspr is unidirectional, it can be used with only beacons.It will be hard to decode and sound in Arduino.
I did research on FT8 a few days ago, but I was quite nervous about using DSP. Decoding is almost impossible in Arduino.

2018-01-08 0:40 GMT+09:00 David Arthur <mumrah@...>:
Nice! Is this a beacon, or did you get software decoding as well?
On Sun, Jan 7, 2018 at 10:33 AM Ian Lee <kd8cec@...> wrote:
I have built WSPR in uBITX. It was only possible with software without any hardware modifications.
Added another library to control the si5351, which resulted in a increase in program memory.
It seems that adding a WSPR function after creating a new si5351 control source will also be possible with a small size.



The receiving test used an FT-817 device and wsjtx.

The video is below.
https://www.youtube.com/watch?v=6FeeZD3czZM&t=213s

The details and details of implementation are listed below.
http://www.hamskey.com

The program size is too large to be included in this program distribution, and the si5351 control code will be directly modified and included next.






--
Best 73
KD8CEC / Ph.D ian lee
kd8cec@...
www.hamskey.com (my blog)

--
David K4DBZ
Unofficial bitx chatroom: https://discord.gg/CrHvWFc



--
Best 73
KD8CEC / Ph.D ian lee
kd8cec@...
www.hamskey.com (my blog)


#ubitx calibration process #ubitx

Art Olson
 

Need some advice on how to calibrate my ubitx. I have read the instructions.  After several tries no success. Reloaded the firmware but freq is still off. Is there a better way to calibrate 

Art- N2AJO 


Re: schematics uBitx #ubitx

at91r40008
 

Thank you Doug.
I should have seen it. 
--
73, Yvon NU6I


Re: Code snipits

Gerry Kavanagh
 

You could just push to a branch. Or create a pull request which could then go to a branch.


Re: schematics uBitx #ubitx

Doug W