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Mine is 3ft shielded and works fine so far. Its not always connected but will be using it this weekend again to figure out my MIC voltage issue. You can re purpose an old parallel computer cable with

Hello In an earlier post Jack had shared his BCI filter design in reply to a post where I was mentioning that my Ubitx V5 is sensitive to BCI. For those who want a simple and effective way to do this

On Wed, Mar 13, 2019, 13:22 Steven Hoff <steven.b.hoff@...> wrote: > How Long is too long. Here is a picture of me holding up the arduino. The > cable will probably be 2.5" or so. > > On Wed,

How Long is too long. Here is a picture of me holding up the arduino. The cable will probably be 2.5" or so.

Hello The biggest issue is the noise if the cable is too long. Use a shielded multicore cable and ensure shield is connected to chassis. I have an extended cable for testing and its OK, but it will

I'm wanting to mount the uBitx in a small waterproof enclosure. The uBitx board fits but the Raduino doesn't fit so I'd like to have a cable so I can mount it in the enclosure somewhere above the

Hey Jerry, I do like that answer. There's also a cap that involved, C222-1? It's hard to read that number. Anyway I get what you're saying. At low signal levels <0.5 V the impedance is quite high and

Wire-up of my bitx-40 is done and installed in a Radio Shack project box, except for the headphone and mic jacks, which I am waiting for eBay to deliver.? It was a somewhat painful process because of

Hi, Uploaded to my photo album just now.? Sort albums by date to find it quickly (works for now as it is the most recently updated one). 73, Mark.

I blew up mine too, but I was able to replace the Mega328p and re-install the bootloader and BitX40 code de AA9GG wrote:

Hi George, Did you click on the pictures?? They get bigger if you do.? Also the second jpeg image is bigger than the first for some reason. I will upload them to my pictures folder here later today

And that's an interesting answer. How did you arrive at 115 ohms?

I doubt you will like this answer regarding the balanced modulator input impedance for mike audio. Here goes my best attempt anyway: Looking at the schematic, T7 and T6 are RF transformers,? those

Interesting question.? Based on my limited understanding, I would assume approximately 115 ohms.? That is assuming at audio frequencies the coils are near zero, and the diodes would have a very low

Mine capable of outputting close to 5Vpk, and it already has an output control. So, I guess we'll see. I'd still like to know what the input impedance of the balanced mixer is.

Hello I think this may be useful, I wrote it to use it to update firmware using Linux command line. Save as program_ubitx.sh or whatever name you want. --------------------- Snip -----------

Try this GitHub link for the Arduino SW: https://github.com/phdlee/dspmeterv1 73 Evan AC9TU

Fredboxes are elemental HTs running low power (under 20mW) AM TX and either superregen RX for the fancy one of a simple diode detector and audio amp for the basic Fredbox design. Range very limited,

I think more or less like Vince. If you don't feel comfortable in making mods buy Yaesu, Kenwood and Icom. They will serve you well but even then don't take for granted your station will be always by

Hi Mark, Thanks for posting your pop fix. However, the image is too fuzzy for Microsoft to display component IDs or values. Could you try a .jpg rather than a .png file.? And the photos are .jpg, but