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Hi Karl, "MG" is a buzzer which can be disabled by by pulling a shorting tab. It produces a pretty disturbing tone. 73 Willy ktschwab@...> wrote:

You could feed Allard's sidetone square wave into the clicky type transducer from Adafruit. Or you could feed Allard's 5v DC signal that goes over to the 10k resistor into the modulator as a source to

The Pixie sidetone is generated by some sort of piezoelectric buzzer/sounder, rated to sound off when given 9v to 12v.? These generate a steady tone of maybe 2khz or worse when fed a DC voltage.

Regarding the need for something to monitor transmissions from the Bitx40v3 during testing, the SoftRock Lite II Combined Receiver Kit at $21 might be the best bang for the buck, assuming you already

A question on the Pixie; what is the "MG" component that is being used for side tone?? Thanks, 73, Karl, KO8S

Make sure the Function switch is working. Fun switch should be open until pressed. I had one cheap surplus switch failed ... goofy problem for awhile :) Installed a new PB switch fixed problem. Hope

Hi Allard no, the red one is not at the ground and the only thing happening is that the rig is not mouving from discriebed pos. 2 ! 73 Gert

Hi Gert, it seems your Raduino is going into calibration mode. This normally only happens when pin A2 (red wire) is connected to ground. Make sure that your pin A2 is not accidentally connected to

Just a reminder! See you all tonight, I hope! -- John - WA2FZW

Hi, I"m pretty new around and about a beginner My new BITX worked for a few days correcty but now does not like me any more Turning on the display says 1. Raduino v1.01 ??? Calibrating.... 2.

Hi Jerry, The link you mention, http://w1sye.org/wp-content/ uploads/2017/01/NCRC_PixieOperation.pdf, is our club web site and documents our first club build. We built 30 or so Pixies and exposed many

Yup, you're right, probably not Vgs-max. Lack of DC bias could easily cook it.

I haven't posted it yet. I'd posted the problem with output dropping at 14mhz in another thread about the multi-band bitx in the last 2 weeks. -- Ryan Flowers W7RLF ? miscdotgeek.com (

?Did I miss something? I don't think I saw the detailed explanation of increased output/data....???? ________________________________ Sent: Saturday, November 25, 2017 5:35 PM To: [email protected]

I think I messed up R150 when soldering to it, and so there was no bias, which caused the IRF510 to cook itself. After replacement it's worked fine, for which I am glad. I've also thought about

Be careful! The spec for Vgs to 20v. is for putting the device in the "full on" condition. At 0v the switch is "full off", but at some gate voltage (usually around 5v) it turns rather suddenly to

Ah, so that's the consequence of too high a value at R150. Vgs max is +/- 20v, my guess is this got exceeded and punched a hole in your IRF510. R150 would keep that voltage within reasonable limits.

My thoughts as well, Jerry. I also intend to fiddle with resistance and gate capacitance a bit more. I was in the midst of doing so when R150 failed open and took the IRF510 with it. No Bias = 5A on

You're very persistent! Sounds right, different IRF510 fab lines likely present a different capacitive load at the gate. A stock R150 at 47 ohms is a good match for T6/Q14, but as frequencies go up

New IRF510, new R150. Details in a blog post to follow.? -- Ryan Flowers W7RLF ? miscdotgeek.com ( http://miscdotgeek.com ) http://miscdotgeek.com/unofficial-bitx40-faq