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?Several guys printed my 1.4" Knob,? this is 1.2" and a little different.

I am planning to buy a signal generator. I am thinking about this but I don't know if this is suitable given the 0.1v output in order to check sensitivity?

KKmoon Generador de Se?ales ,DDS de doble Canal ,200MSa/s 25MHz , MHS-5200A https://www.amazon.es/dp/B06XGVQWLD/ref=cm_sw_r_cp_api_XH-yzbAATQQ2E

Oh, I need the instructions to add a power supply, antenna, etc. to it. The ham that handed it to me had no paper items except for a half page of paper that listed some components.

I don't see a way to edit my previous post or I would have done that instead of making a new one.

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Jim/N4AAB

Okay, don't worry about it then.

I would like some instructions and schematic. I looked through the files section here, but I'm not sure I got the correct ones.

Thanks,
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Jim/N4AAB

Jim :?

The Bitx40v3 board came preassembled, likely that cap is the the one intended to go between wiper and ground on the tuning pot.?

See details at :?



Note that this figure depicts a 10 turn pot, but you want same setup from Wiper to ground on a regular linear 10 pot.?

cheers

Michael VE3WMB?

No need for any of them. The parts are included in the event you want to revert to the analog VFO. The Raduino replaced the need for the additional componets.

v/r
Fred W4JLE

Michael,

The IRF510 has a input capacitance of 180PF vs the 520 being about 360PF, so you may have to turn up the drive level a bit more, but the 520's should work fine. I have used them interchangeably and had very similar results with both.

Joel
N6ALT

I had asked Allard and group the same question. Very recently I uploaded v1.17.1. I had the anti-gallop switches but removed them when I updated. I set my bitx to tune the entire band (no CW) occasionally I still hit the bottom of the 10 turn pot (yes you'll need one) the radio gallops. My buddy kept his in and his doesn't gallop, but I seem to remember that it doesn't maintain the last freq set before we turn it off. You will need one of the push buttons for a function switch (orange to ground) and a 10k resistor soldered to the main board and in the black position of the Arduino 8 pin plug for PTT sense whick will prevent FMing. I'll send you the wiring photos.

Sent from Mike's iPad WA1MAD

Jim,
From the instructions at
Solder the 0.1uF disc ceramic (marked as 104) between the yellow and violet wires on the tuning pot

I have 2-IRF520's. I bought them because I thought they would work in place of the supplied 510's. Will they work? Difference THANKS

I have one small ceramic capcitator in the parts box i was handed by the hm who felt he couldn't complete the kit. But there are 2 locations on the Bitx40v3 board I have.There is another spot by the toroid, by itself, that as far as i can read it, no D15 nor D16 is installed either.

Are the mising ? Or don't need to be installed ?

Thanks,
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Jim/N4AAB

Ashhar Faran's original firmware v1.01, which was the base from where I started developing my raduino sketch, can be downloaded from .

All subsequent sketch versions 1.02 through 1.18 I released since are available at

73 Allard PE1NWL

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Sorry guys for the double post. ?I did end up receiving an answer from Michael. ?I thought maybe I should have made a new post and that's why I didn't receive an answer. ?I tried to delete this original message but it looks like it didn't work. ?Sorry....newbie here.

Hi everyone, I'm a little late to the party being that I've just completed my Bitx40 build last week. ?I still have a minor bug to work out but hopefully that will be resolved in a few days. ?

I will be using mine for phone only. ?Out of the box mine has the stock version of firmware in it. ?I haven't added the suggested tuning lock buttons to it yet either but they are on the way. ?If I upgrade to the v1.18 version firmware are there any additional switches that I need to add? ?Is there an S meter in the latest firmware?

To me it looks like if I update the firmware and want to go back to the original version, the listing in the Files directory here in the group has something called "B40SoftwareRel0100.ino". ?Is that the original firmware?

Thanks

Whoops ... that last one should have read ?"disable tuning on TX" with PTT Sense mod to prevent FM-ing . !?

Curt even if you don't plan do do CW there are some nice improvements in Allard's code that are beneficial for SSB.?

The README.md file gives the details of all of the changes :



Minimally you need a FUNCTION button.

Just a few things that you might find useful :

- better tuning stability (less flutter)?
- dual VFO?
- Support for USB?
- support for 10 turn pot for tuning (tuning range setting in settings menu)
- ability to calibrate both LSB/USB from the settings menu?
- ability to adjust ?VFO drive level from settings menu (can help to reduce birdies)?
- with a SPOT switch closed you enter Fine Tune mode with 1Hz resolution (intended primarily for CW but also works for SSB)
- ability to work SPLIT (requires PTT Sense mod)
- decimal point for better frequency readability (i.e A 7.123.4 ?vs A 7.1234 )?
- disable tuning on RX with PTT Sense Mod (to prevent FM-ing during TX)

and probably a few others things that I have overlooked.

Cheers

Michael VE3WMB?

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I cannot find it where ?is located?