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Bitx40 wiring #bitx40

 

hello, everyone.. I want to ask about how to wire up bitx40.

In Bitx40 website ()
There is explanation about how to wire up the DC Power Connections.. Here is what the explanation says..

  • "-You may route the positive power line through the ON/OFF switch on the volume control
  • -Use another PA POWER line to feed power to the Power Amplifier. "
Can someone explain more further about this part? What will happen if I didn't use a potentiometer with on/off switch, just an ordinary potentiometer??
 

"-You may route the positive power line through the ON/OFF switch on the volume control
The 2 tabs on the back of the volume potentiometer that come with the BITX40 kit are switched.


-Use another PA POWER line to feed power to the Power Amplifier. "
You have the option to wire your PA power to the same incoming source as the rest of the radio or feed it with a different power source

--

 

Thank you for your explanation..?

What about my last question..What will happen if I didn't use a potentiometer with on/off switch, just an ordinary potentiometer?

Thankyou
 

The switch has no impact on the function of the potentiometer.? If you are using a different pot for volume control you want logarithmic not linear.? There is also no issue with using the included pot and not wiring the switch.? For convenience you will probably want another means of turning the radio on and off.
 

What happen if we use linear pots instead logarithmic pots in above?


On Fri, May 11, 2018, 9:00 AM Doug W <dougwilner@...> wrote:
The switch has no impact on the function of the potentiometer.? If you are using a different pot for volume control you want logarithmic not linear.? There is also no issue with using the included pot and not wiring the switch.? For convenience you will probably want another means of turning the radio on and off.

 

You will find some information why to use a logarithmic pots in this thread:


73 de DJ2AG


On Fri, May 11, 2018 at 01:20 am, Praba Karan wrote:
What happen if we use linear pots instead logarithmic pots in above?

On Fri, May 11, 2018, 9:00 AM Doug W <dougwilner@...> wrote:
The switch has no impact on the function of the potentiometer.? If you are using a different pot for volume control you want logarithmic not linear.? There is also no issue with using the included pot and not wiring the switch.? For convenience you will probably want another means of turning the radio on and off.
 

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It will work but you will likely find it a little odd to use. The human ear has a logarithmic response to audio volume, hence the normal use of log pots.


On 11/05/2018 6:20 PM, Praba Karan wrote:

What happen if we use linear pots instead logarithmic pots in above?

On Fri, May 11, 2018, 9:00 AM Doug W <dougwilner@...> wrote:
The switch has no impact on the function of the potentiometer.? If you are using a different pot for volume control you want logarithmic not linear.? There is also no issue with using the included pot and not wiring the switch.? For convenience you will probably want another means of turning the radio on and off.

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