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Go easy on me! First post and first homebrew project... Step 2 of the BITX40 wiring up instructions says that 'the DC power from the socket goes to the board ?through the on/off switch on the volume control', but then later in step 2 it says that 'you may route the positive power line through the ON/OFF switch on the volume control' making it sound optional or that it requires some additional configuration. So, if you follow the default instructions in steps 2 and 4, is the DC power routed through the volume control via the PCB board, or do you need to do this yourself by wiring the DC socket to the volume control and then from there to the board? Thanks in advance! |
开云体育Your choice. Many of us prefer to use a toggle switch for DC power, rather than using the switch on the volume control, to avoid unnecessary wear on the potentiometer. Bill, VK7MX On 14/05/2017 6:07 AM, Dunstan via
Groups.Io wrote:
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开云体育You may want to use a ON-OFF-ON DPDT switch in place of the volume control switch. This will allow you to put either 12 volts or your choice of final voltage on the Final. Wired as follows ? 1 O???? O 2 3 O???? O 4 5 O???? O 6 ? Wire 12 Volts to pin 3 and selected final voltage to pin 6. Pin 4 goes to the final voltage connector pin 2 goes to the 12 volt connector on the board. Tie together pins 1, 2, and 5 ? v/r Fred W4JLE ? From: [email protected] [mailto:[email protected]] On Behalf Of Dunstan via Groups.Io ? Go easy on me! First post and first homebrew project... Step 2 of the BITX40 wiring up instructions says that 'the DC power from the socket goes to the board ?through the on/off switch on the volume control', but then later in step 2 it says that 'you may route the positive power line through the ON/OFF switch on the volume control' making it sound optional or that it requires some additional configuration. So, if you follow the default instructions in steps 2 and 4, is the DC power routed through the volume control via the PCB board, or do you need to do this yourself by wiring the DC socket to the volume control and then from there to the board? Thanks in advance! |
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Is "unnecessary wear on the potentiometer" really a concern if that what's it's designed for?? Or does the kit come with low-quality components?
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You could spend more than $59 on just a potentiometer. ?Compared to that, I suppose everything on the Bitx40 is low quality. ?That's why I got one. ?Haven't seen any complaints here about the pot wearing out. ? But I have run into lots of old radios with scratchy volume controls. On Sun, May 14, 2017 at 09:31 am, W9ZIM wrote:
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Ralph Mills
Pictorial diagram for the beginners out there. ?Sorry requires a facebook account to view. On Saturday, May 13, 2017 4:07 PM, Dunstan via Groups.Io <dunstancooke@...> wrote: Go easy on me! First post and first homebrew project... Step 2 of the BITX40 wiring up instructions says that 'the DC power from the socket goes to the board ?through the on/off switch on the volume control', but then later in step 2 it says that 'you may route the positive power line through the ON/OFF switch on the volume control' making it sound optional or that it requires some additional configuration. So, if you follow the default instructions in steps 2 and 4, is the DC power routed through the volume control via the PCB board, or do you need to do this yourself by wiring the DC socket to the volume control and then from there to the board? Thanks in advance!
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W9ZIM