Date   
Re: Modular BiTX40

JuanCarlos
 

It is my idea to conforming a modular rig.
My design requirement:
Main board have to be < 100 x 100 mm to use a PCb manufacturer discount as a prototype.
All the module have to be the same size interchangeable over the main board for experimenter or for teaching uses.
The main board would be assembly as a regular rig or will be assembly separate with each module.
The relay and the Qrp PA will be in other module with the option to snap in to the main board.
At this time the main board is empty, but It will be completed with all the modules for the regular use as a Qrp exciter.
Please any comment will be appreciate to improve the design idea.


Qrv's, 73's

Mr.Juan Carlos Berberena Glez BSc.
WJ6C ex/CO6BG


“If you have a penny and I have a penny and we exchange pennies, you still have one cent and I still have one cent.  But if you have an idea and I have an idea and we exchange ideas, you now have two ideas and I now have two ideas.” 

Re: W8TEE TFT/VFO Boards

DaveC <murzim@...>
 

Thanks Guys, I think Jack is away on vacation at the moment so will wait until he is back.

Dave
G8PGO

Reminder - Maker’s Net on Echolink

K5ESS
 

A new net devoted to Makers (DIYers, homebuilders) has started up on Echolink conference node 9229 (*TECHLINK*).  All those interested in building their own “stuff” are invited.  The net is on Sunday and starts at 20:00 UTC (4:00 P.M. EDT, 1:00 P.M. PDT).  The net was established by Michael Beaveridge, VE7KI.  See website at http://techlink.hamnet.ca/ .  All aspects of building and programming related to ham radio are open for discussion.  Please drop in.

Mike

K5ESS

Re: Reminder - Maker’s Net on Echolink

K5ESS
 

Correction for Daylight Savings Time

A new net devoted to Makers (DIYers, homebuilders) has started up on Echolink conference node 9229 (*TECHLINK*).  All those interested in building their own “stuff” are invited.  The net is on Sunday and starts at 21:00 UTC (4:00 P.M. EST, 1:00 P.M. PST).  The net was established by Michael Beaveridge, VE7KI.  See website at http://techlink.hamnet.ca/ .  All aspects of building and programming related to ham radio are open for discussion.  Please drop in.

 

Mike

 

K5ESS

 

Re: 2A amperage draw on TX, but no RF out

John Higgins
 

Good Evening!

What is the nomenclature on the Q13—need to try that replacement to see if the power picks up...only ~100mw now, if that.

73, John/N6VTS

raduino v1.27 released (improved suppression of spurious burst)

Allard PE1NWL
 

Hi,
I've just released raduino v1.27, download it from https://github.com/amunters/bitx40

New in this release:

  • Improved the suppression of the spurious carrier when switching from RX to TX.
  • The default TX-DELAY is now 65 ms (you can adjust the delay time by editing line 71 as necessary)
IMPORTANT: This sketch version requires the library "PinChangeInterrupt" for interrupt handling.
This is a non-standard library - it may not yet be installed on your system. However installing it is very easy:

  1. In your IDE, go to Sketch => Include Library => Manage Libraries...
  2. The Library Manager will be opened, wait a few moments for your IDE to refresh the list of installed libraries.
  3. Then, in the search box (Filter your search), enter "PinChangeInterrupt"
  4. Select the library PinChangeInterrupt by NicoHood and press the Install button
  5. You can close the Library Manager when the installation is completed.

Then compile and upload the sketch as usual.

Happy BitX-ing!

73, Allard PE1NWL

Re: BITX QSO Night, Sunday, November 5, 7pm Local Time, 7277 kHz in North America, 7177 kHz elsewhere

John P
 

Just a reminder!
--
John - WA2FZW

Late to the party for W8TEE TFT/VFO PCB

Ross Smith
 

I've delved into the backlog of posts and found myself unable to ascertain whether there are any pcbs to be had. 
Very interested in acquiring 2 or 3.
Cheers
Ross

Re: Late to the party for W8TEE TFT/VFO PCB

Ross Smith
 

My apologies for the bandwidth, I've now found the information I sought.
Ross

Re: Late to the party for W8TEE TFT/VFO PCB

William R Maxwell
 

I have one left from the VK group purchase, Ross. $15.60 including postage anywhere in Oz.

Bill, VK7MX


On 5/11/2017 10:01 PM, Ross Smith wrote:
I've delved into the backlog of posts and found myself unable to ascertain whether there are any pcbs to be had. 
Very interested in acquiring 2 or 3.
Cheers
Ross

Display trim.

G1WDF
 

I've had an hour browsing the old posts looking for a source for a trim panel to go around the standard bitx40v3 display.
No luck finding anything. Does anyone have source for such an item? They seem to available from photos in the photos section.
A UK source would be ideal.

Cheers, Richard.

Re: Display trim.

Gordon Gibby
 

I made one, with an X-Acto knife, and some of the plastic from a Wendys salad dish.   

It wasn't the thin stuff, it was about a millimeter thick, and just the right consistency for this job.

Sent from my iPhone

On Nov 5, 2017, at 7:57 AM, G1WDF <wobblyandflo@...> wrote:

I've had an hour browsing the old posts looking for a source for a trim panel to go around the standard bitx40v3 display.
No luck finding anything. Does anyone have source for such an item? They seem to available from photos in the photos section.
A UK source would be ideal.

Cheers, Richard.

Re: Display trim.

Karl Heinz Kremer, K5KHK
 

Here is one: http://www.hobbytronics.co.uk/lcd-bezel-16x2

You need to search for a “lcd 16x2 bezel”

Karl Heinz Kremer
PDF Acrobatics Without a Net 
PDF Software Development, Training and More... 

On Nov 5, 2017, at 7:57 AM, G1WDF <wobblyandflo@...> wrote:

I've had an hour browsing the old posts looking for a source for a trim panel to go around the standard bitx40v3 display.
No luck finding anything. Does anyone have source for such an item? They seem to available from photos in the photos section.
A UK source would be ideal.

Cheers, Richard.

Re: BITX QSO Night, Sunday, November 5, 7pm Local Time, 7277 kHz in North America, 7177 kHz elsewhere

Francesca Wine <francescawine@...>
 

Try the Early Bird net at 8:am pst. On 7.186 every morning.  Most hams on the net  check  in on bitx 40 or others QRP. The net is in Nevada  great  for the Western half of the US.
Francesca W7LTG NV

--
Sent from Hotmail Email App for Android

Saturday, 04 November 2017, 08:41PM -07:00 from John P j.m.price@...:

Just a reminder!
--
John - WA2FZW

--
I have  bitx40  and completely wired up. get nice hiss when the volume up. display lights up only showing Raduino V1.01.  frequency never shown, anyone have that problem?  i think the software is not in the chip.
Francesca W7LTG   NV 

Re: Display trim.

Michael Hagen
 

I have a 3D printed Bezel as addition to the RaduinoX "better" Raduino.

It comes with some Flat Head metric screws, and additional plastic standoffs and screws.

There all also spacers to hold it squarely behind the front panel.

It fits the standard 1602 LCDS.   I sold a half dozen to members of this group.

$3 if shipped with RaduinoX, $5 if by its self.



On 11/5/2017 4:57 AM, G1WDF wrote:
I've had an hour browsing the old posts looking for a source for a trim panel to go around the standard bitx40v3 display.
No luck finding anything. Does anyone have source for such an item? They seem to available from photos in the photos section.
A UK source would be ideal.

Cheers, Richard.

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

Re: 2A amperage draw on TX, but no RF out

Jerry Gaffke
 

Q13 is an mmbt3904.  
It runs hot, a 2n3904 would be a better choice if replacing it as the leaded version can dissipate more heat.

But there's a hundred different parts that might reduce power on you like that,
you won't do much good just shotgunning every part in the transmit path.
I suggest you check all the DC values around Q13, and not rip that transistor off the board
unless the base and emitter voltages look wrong when pressing the PTT switch:
    https://groups.io/g/BITX20/files/K7AGE/BITX40%20Voltage%20Measurments.pdf

Here's another thread on debugging the transmitter.:  
    https://groups.io/g/BITX20/message/31352

Jerry


On Sat, Nov 4, 2017 at 06:19 pm, John Higgins wrote:
What is the nomenclature on the Q13—need to try that replacement to see if the power picks up...only ~100mw now, if that.

Re: BITX QSO Night, Sunday, November 5, 7pm Local Time, 7277 kHz in North America, 7177 kHz elsewhere

Tom Bohacek
 

I hope there will be others or maybe a regular thing, as I have not put my bits together yet. 

Re: BITX QSO Night, Sunday, November 5, 7pm Local Time, 7277 kHz in North America, 7177 kHz elsewhere

John P
 

Tom, this is a regular Sunday evening event. 
--
John - WA2FZW

Re: Display trim.

Larry Smith
 

Try
Ebay number:    
201853209420
201853209420
eBay item number:
201853209420

On Sun, Nov 5, 2017 at 6:57 AM, G1WDF <wobblyandflo@...> wrote:
I've had an hour browsing the old posts looking for a source for a trim panel to go around the standard bitx40v3 display.
No luck finding anything. Does anyone have source for such an item? They seem to available from photos in the photos section.
A UK source would be ideal.

Cheers, Richard.


Signal generator.

Brent Seres/ VE3CUS
 

Hi all

I now have a spare radio which I would like to use to put together a little signal generator. No point in regards inventing the wheel if anyone already has a simple sketch I could use. I have Mike's excellent upgrade, so was going to use the original radio for this.

Thanks

Brent