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Maybe the bias needs re-adjusting for 24v operation? I really dont know much about the technical operations of these things, I am still learing... I am tempted to replace the Electro caps with 35v

Hi Jim, Good to know. I might need your service later.... Ordered all the parts to try myself first. The Raduino seems to be the Achiles heel here. Break it, by reversing the connectors, or short

Very odd, but I am now seeing the same thing on my BitX40v3. On the test bench I was seeing what looked to be an output that increased by the square of the PA voltage ratio, but since packaking,

Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the [email protected] group. *File:* ubitx_V2_00R.zip *Uploaded By:* Jim

That DOES present a problem - LOL. I found that one does NOT want to power the Nano using the Vin pin if you are using an external supply greater than 12VDC!? The on board LM1117 regulator can't

Funny, that's exactly one of my earliest memories too. I used to peek trough the holes in the rear panel. Inside was a mysterious glow and a warm smell came out: One day I turned the dial and strange

Hi Ian: I was wondering if you had plans to convert the support files for your software to *.cpp files from their current *.ino secondary file names (except for ubitx_30.ino)? Jack, W8TEE

HI, I did this last night with the uBITX, went from 13.8 to 24v. and only saw an increase of +-2w. 80m 24v=12w 13.8v=10w 40m 24v=7w 13.8v=9w 20m 24v=3w 13.8v=4.5w 10m 24v=1w 13.8v=2w Also cause

Helluva Rush Order 5 (Military version) ...And it was for in a rush back during WWII Lotsa fun radios can be found for almost nothing. This one free except cost of gas to go pick it up and

I didn't think anyone used code anymore...its all FT8...hi hi Brian K9WIS ---- "Charles D. Smith" <laborlawyer@...> wrote: On Feb 1, 2018, at 9:21 PM, Jack Purdum via Groups.Io

Hi Lisa, Here.... https://youtu.be/R8G8XAwq38A Bernie, KC9SGV

Bitx40 no receive audio at all when attached to an antenna or on a dummy load.? I have a speaker and headphone jack wired.? Baofeng mic and ptt are on separate 3.5 mm jack. VFO changes frequencies,

JYE sells it with all surface mount parts installed, you still have to add the through hole parts. Here's what might be a good RF probe, suitable for low level signals, use it with a dvm: ?

If you access the list from /g/BITX20/topics instead of an email client you will have access to the search function.? Searching for *irf510 24v* will yield enough reading to keep you

I would like to get on of these and a real one not a knockoff but I’m trying to find one build already. I’m not afraid to build the kit but I’d rather get it built at the moment. I’m also

Sorry about that. My order date was December 16, 2017. Hope the rest of you that are waiting I hope you get your radio soon 73 Dave KD1NA -- Dave Robertson KD1NA

I could not find the answer on the forum but I apologize now if it has already been answered.?Noting the need for an improved heatsink/s.?Has anyone done any experiments with increasing the PA

Looking at the schematic, has anyone tried changing the turns ratio on T10, or monkeying with the preamp? It would lower the drive level, but also lower the drive impedance. One might also increase

Hi gang.? So I thought I'd get stupid and add complexity where none is needed.? Radio: BTX40, 1.27.7 'ware, basic hardware mods.? I put a buck converter between the power switch and the leads that

I suppose. The LTSpice model of the IRF510 does assume worst case, perhaps that is part of it. But the WA2EBY model is off from the performance reported in the QST article by more than I would expect