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BITX40- tune button- no output

 

Hi gang.? I've got my '40 assembled, tested, and mounted in a box.? Loaded Allard's latest as well as all his hardware mods, with the exception of the TX-RX mod.? 6W output on SSB, but no output on CW when I push the tune button.? I get the sidetone on the speaker, but no movement on the wattmeter.? Something in the Settings Menu?? Any ideas?? I've searched the messages, but no joy.? Thanks, Aloha, Steve WH6ST
 

Tune button? ? There is no tune button with Allard’s mods!? Maybe you are thinking of the CW spot / fine tune button?? This puts a tone on cw for allowing you to align the incoming signal with the CW offset and it also enables fine tune on the dial with 1 Hz steps.? Holding it down at the same time as the function button will lock the tune dial.

Parallel up a button with the straight key down and this will give you a momentary Tune button.

73 Mike ZL1AXG


On Fri, 16 Feb 2018 at 8:36 PM, Steve Thatcher <stevep2p@...> wrote:
Hi gang.? I've got my '40 assembled, tested, and mounted in a box.? Loaded Allard's latest as well as all his hardware mods, with the exception of the TX-RX mod.? 6W output on SSB, but no output on CW when I push the tune button.? I get the sidetone on the speaker, but no movement on the wattmeter.? Something in the Settings Menu?? Any ideas?? I've searched the messages, but no joy.? Thanks, Aloha, Steve WH6ST

 

Thanks Mike, but according to ,?

CONNECTING A STRAIGHT MORSE KEY or 'TUNE' BUTTON:

A straight key (or external electronic keyer) can be connected to Raduino pin A1 (connector P1, brown wire). It is recommended to install a 1K series resistor to protect the Arduino input. When the key is up (open) pin A1 will be HIGH. When the key is down (closed, shorted to ground) pin A1 will be LOW, and a carrier will be transmitted.

You could also wire up a simple push button instead of connecting a morse key. The generated CW carrier can be used for tuning up your antenna. In that case please note that you will be transmitting a carrier at full duty cycle, therefore don't keep the tune button pressed for too long to prevent overheating the final!

Am I misunderstanding something here?? Aloha, Steve
 

Steve, you need to install?the TX-RX mod so that the radio will go into TX when you press the button.



Alternatively, you can press PTT manually on the mic and then press the tune button.

73 Allard PE1NWL

Jack Purdum
 

It's probably worth mentioning that the "free" A1 refers to the original BITX40 code. Line 146 in that code shows:

// #define ANALOG_KEYER (A1)

which is commented out. If you do use that pin for the purpose mentioned here, you should probably add the following line:

pinMode(ANALOG_KEYER, INPUT_PULLUP);

somewhere around line 683 after uncommenting the #define. If you are using Allard's code, he has already used A1 for the key. Steve's reference also shows this.


Jack, W8TEE

From: Steve Thatcher <stevep2p@...>
To: [email protected]
Sent: Friday, February 16, 2018 4:08 AM
Subject: Re: [BITX20] BITX40- tune button- no output

Thanks Mike, but according to ,?

CONNECTING A STRAIGHT MORSE KEY or 'TUNE' BUTTON:

A straight key (or external electronic keyer) can be connected to Raduino pin A1 (connector P1, brown wire). It is recommended to install a 1K series resistor to protect the Arduino input. When the key is up (open) pin A1 will be HIGH. When the key is down (closed, shorted to ground) pin A1 will be LOW, and a carrier will be transmitted.
You could also wire up a simple push button instead of connecting a morse key. The generated CW carrier can be used for tuning up your antenna. In that case please note that you will be transmitting a carrier at full duty cycle, therefore don't keep the tune button pressed for too long to prevent overheating the final!

Am I misunderstanding something here?? Aloha, Steve
 

Thanks Allard!? I can make that happen.? Thanks also for the tip on the PTT.
Thanks Jack, but you're scaring me here!? I'm fine with assembling and wiring, etc.? Messing with code- YIKES.? But that's one reason why I got this thing, so, something new to learn.??
Thanks to all on this site for this fantastic sharing of knowledge.? Aloha, Steve, WH6ST

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