Date   
Re: CEC 5" Enhanced Nextion Files #images

Joe Puma
 

Did you make any changes? It’s looks like one of the pages is having a memory overflow. You exceed the memory allocation for file. The issue is coming from the page that is listed right above the error. I started the redesign on that 5” and Mark Hatch finished it off. 


Joe
KD2NFC

Re: CEC 5" Enhanced Nextion Files #images

Justin Phillips K5AXL
 

I am using the Enhanced model btw, you designer might be defaulted to a smaller display, changing it to the appropriate 5" model should let it compile. I believe the error is related to images/sizes greater than the currently selected model can display.

Re: CEC 5" Enhanced Nextion Files #images

Justin Phillips K5AXL
 

Did you set the device model under Device ID? I had to change mine to Enhanced to get it to compile.

Re: V4 TX selective failure #ubitx-help #cat

_Dave_ K0MBT
 

Don, How does your radio work when you have disconnected the sound card? When you are using a mic and regular headphones.
--
73
Dave
k0mbt
Raduino bracket and Ham_Made_Keys

Re: Unexpected Blowing of Fuses on Transmit

 

The only thing I can think of that would suddenly cause high current
is a floating IRF gate. maybe a dry solder on R97/98 or IRF gate leads.

A 2A fuse will need double the current to blow instantly. If I remember
my EE a normal fuse rating is the current that the fuse will survive for
10hours without blowing, at double the rating it will blow in seconds
depending whether it is slo blow or fast!

Read more
https://en.wikipedia.org/wiki/Fuse_(electrical)

Raj

At 01-12-19, you wrote:
Thanks Raj,
Yes, that makes sense.
I'll have a crack at it this afternoon.
Rgards
H

Re: #ubitx #ubitx

Clark Martin
 

hex files are executable images, i.e. you don’t compile them, they’ve already been compiled and linked.  To download it to the arduino you need to use avrdude directly.

Something like:

avrdude -p atmega328p -c arduino -U flash:w:FILENAME.hex

Clark Martin
KK6ISP

On Dec 1, 2019, at 6:30 PM, Mike Short <ai4ns.mike.spam@...> wrote:

I been unsuccessful loading KD8CEC software for the V5. I can’t figure out how to compile and upload the.hex files. I can upload .ino with no issues 
_._,_._,_


Re: Unexpected Blowing of Fuses on Transmit

Gordon Gibby
 

Great work , guys— thanks. 


On Dec 2, 2019, at 00:38, MVS Sarma <mvssarma@...> wrote:

Correct Jerry. 

On Mon, 2 Dec 2019, 10:45 am Jerry Gaffke via Groups.Io, <jgaffke=yahoo.com@groups.io> wrote:
If the fuse blows when you push PTT but before speaking into the mike,
it probably is not mike gain or the RV1 drive setting.
Most likely trouble around the IRF510's somehow.

##########################
You cant have all of 
1. Preset gate more than 100mA drain current,
2. Hi rf drive with q90 collector preset and
3 boosted mic gain with presetbfor modulation level control. 
 
You may have to reduce at two of the locations. 
 
All the best 
 

Re: CEC 5" Enhanced Nextion Files #images

Joshi Hp
 

I download the latest(December) hmi  file but there is a compilation error as shown in the picture.

Re: Unexpected Blowing of Fuses on Transmit

MVS Sarma
 

Correct Jerry. 


On Mon, 2 Dec 2019, 10:45 am Jerry Gaffke via Groups.Io, <jgaffke=yahoo.com@groups.io> wrote:
If the fuse blows when you push PTT but before speaking into the mike,
it probably is not mike gain or the RV1 drive setting.
Most likely trouble around the IRF510's somehow.

##########################
You cant have all of 
1. Preset gate more than 100mA drain current,
2. Hi rf drive with q90 collector preset and
3 boosted mic gain with presetbfor modulation level control. 
 
You may have to reduce at two of the locations. 
 
All the best 
 

Re: Unexpected Blowing of Fuses on Transmit

Jerry Gaffke
 

If the fuse blows when you push PTT but before speaking into the mike,
it probably is not mike gain or the RV1 drive setting.
Most likely trouble around the IRF510's somehow.

##########################
You cant have all of 
1. Preset gate more than 100mA drain current,
2. Hi rf drive with q90 collector preset and
3 boosted mic gain with presetbfor modulation level control. 
 
You may have to reduce at two of the locations. 
 
All the best 
 

Re: KD8CEC ‘s SWR senser

Jerry Gaffke
 

Kits and Parts assumes you are using an old school micro-ammeter.  
That would present more of a load than the tens of megaohms presented by the Nano's analog input pin.

The TandemMatch/StocktonBridge circuit has RF going into the diodes that is proportional to the forward and reverse power.
That power can vary from second to second, the 220K resistor discharges the 0.1uF cap when the power decreases.
The value of the resistor is not critical, but without it it might be several seconds before the cap discharges.

Jerry, KE7ER

 

On Sun, Dec 1, 2019 at 01:45 PM, Joel Trenalone wrote:
Also, here are the schematics for both the kitsandparts bridge (I’m using), and the home brew Stockton bridge (that Ian Lee uses in his video and description http://www.hamskey.com/2019/04/installing-swr-and-rf-power-sensor-in.html  )

I see some differences, namely the 220k resistor to ground from the reverse/forward power outputs on the Stockton bridge, but is not on the kitsandparts bridge. Note sure why the difference, and how it affects the operation to the Arduino. 

Re: V4 TX selective failure #ubitx-help #cat

Don - KM4UDX
 

Rodger. 

Re: KD8CEC ‘s SWR senser

Tom, wb6b
 

HI,

Here is an interesting site that shows building a digital SWR meter using a Stockton bridge connected to an Arduino. Includes some explanation on how the bridge, meter and software work.

https://sites.google.com/view/kn9b/digital-swr-meter

Also has links to other explanations of Stockton bridges and SWR. Such as this Youtube video on Stockton bridges, by w2aew.

https://www.youtube.com/watch?v=byF1FLdbUiA

Tom, wb6b

Re: Ubitx vCiccio1 Sforzo eccezionale.

Fred Finster
 

What are your plans for electronic part dimensions and layout size of PCB board.

Is this in Kicad-PCB  EDA Suite ?

Who will you have layout this circuit board?  Will they have Radio Frequency Layout experience?

Quali sono i tuoi piani per le dimensioni dei componenti elettronici e le dimensioni del layout della scheda PCB.

È nella suite EDA Kicad-PCB?

Chi avrà il layout di questo circuito? Avranno esperienza di layout in radiofrequenza?

What type of metal case will you place the PCB board in?
What extra space will be left available inside the metal case for example a 12V battery to power the radio and display for portable operations?

In quale tipo di custodia metallica inserirai la scheda PCB?
Quale spazio aggiuntivo rimarrà disponibile all'interno della custodia in metallo, ad esempio una batteria da 12V per alimentare la radio e il display per le operazioni portatili?

This is your project, your choices, your design.   Is there any part you need help with in Layout or using LibreCad.org for creating building a metal case?

Questo è il tuo progetto, le tue scelte, il tuo design. C'è qualche parte con cui hai bisogno di aiuto in Layout o nell'utilizzo di LibreCad.org per la creazione di una custodia in metallo?

Yes, you live in Italy. I live Salem, Oregon, USA. Maybe the distance is too far to be helpful to you in your ubitx Ciccio 1 project.
Sì, vivi in ​​Italia. Vivo Salem, Oregon, USA. Forse la distanza è troppo lontana per esserti utile nel tuo progetto ubitx Ciccio 1.

best regards and have a nice weekend
i migliori saluti e buon fine settimana

Fred  Finster  WB7ODY

https://www.youtube.com/watch?v=l9b_6WLemmg  Fast Kicad Video demonstration
https://docs.kicad-pcb.org/
https://kicad-pcb.org/
https://librecad.org/
https://web.archive.org/web/20170330212243/http://kliktel.org/bitx40/
archive of my bitx40 metal case box. minus the photographs and the .PNG files.  I think the .DXF file was saved?


Re: How to get rid of Local FM broadcast stations #ubitx

Gavin
 

The FM stations are about or at least 5 1/2 miles away from me. I hear them no matter where I tune too, both of them. And yes I can tune to them with a regular fm receiver. They are at 97.7 and around 104. 

I did solder the ground to the antenna connector, but I can double check that. 

Re: How to get rid of Local FM broadcast stations #ubitx

Vince Vielhaber
 

The first thing to figure out is where it's REALLY coming from. Are the stations' transmitters really close to you? Do you hear them on any other receiver tuned to the same freq(s)? Are they coming in on the same freq? What freq(s) are you hearing them on?

Vince - K8ZW.

On 12/01/2019 06:05 PM, gdesplin@... wrote:
I just wired up my v5 uBitx and have it on the table and have have an
EFHW antenna plugged in. I am picking up two different loud FM stations,
one is 97.7 and the other is around 104. When I unplug the antenna I
can’t hear them. How is this solved? Or what might be causing this? I am
new to both HF and kit radios. Thanks.

Re: How to get rid of Local FM broadcast stations #ubitx

Curt
 

Most unusual.  are these stations coming in at a particular setting of the radio tuning, or all the time regardless of where it is tuned? If the latter, then these stations could he overwhelming the audio section.

I would check to insure you have a ground path connection from the board to the antenna connector. If this is an open circuit ehen checked with a dvm, it may he involved.

Curt

#ubitx #ubitx

Mike Short
 

I been unsuccessful loading KD8CEC software for the V5. I can’t figure out how to compile and upload the.hex files. I can upload .ino with no issues 

Re: KD8CEC ‘s SWR senser

Joel Trenalone
 

Just to clarify, the test above is a test of the transmitter output with the SWR bridge inline (in) and bypassed (out), in response to Mark Hatch’s question :)

Re: How to get rid of Local FM broadcast stations #ubitx

Adrian Chadd
 

hi! There are AM and FM filter kits you can place in the receive path.
(I'm hoping that the bitx v6 will have some jumpers on the rx path to
insert extra filtering..)

Are those stations super close to you?


-adrian

On Sun, 1 Dec 2019 at 15:05, <gdesplin@...> wrote:

I just wired up my v5 uBitx and have it on the table and have have an EFHW antenna plugged in. I am picking up two different loud FM stations, one is 97.7 and the other is around 104. When I unplug the antenna I can’t hear them. How is this solved? Or what might be causing this? I am new to both HF and kit radios. Thanks.