开云体育

Sold. 73 -- Jean-Fran?ois Ménard Jeff | VA2SS Envoyé à partir de mon appareil mobile. Sent from my mobile device.

There are lots of variants to doing a Huff and Puff. EMRFD shows a very basic example on pages 4.5 and 4.7. In this design, the frequency is constantly bouncing somewhere between two frequencies that

Hi, I have for sale my uBITx 6.0 full kit for sale. I purchased it last spring. I just assembled it to make sure it was working, then it is now collecting dust on the shelf since that time. I

Mick, I do not have a v6 kit, so not sure about the following: A7 is the Purple wire coming off of the Raduino digital connector to goes to the encoder.? In one picture that I have seen of the

Good afternoon all I have just installed the kit-projects AGC board and read in the instructions to connect to pin A7 for the S-meter. Please can someone confirm the location of pin A7? Is it the pin

Richard, The name of the group is BITX20, not uBITX.? It is really for homebrewing as well as the kits that came out of that effort.? Feel free to continue to post if you so choose.? We are all

Evan, again thank you I think this will be my last post on the subject as this is a uBITX group, not a Homebrew group..... I think a *simple* fix involves both hardware and software. Since I already

I also used this on the antenna input for a while before I built my own filter. It worked ok. Definitly killed the AM interference. Their may have been some slight attenuation of the transmitted

Kit-projects sells a uBitx broadcast filter kit on the web page where they sell their agc board. It requires you to wind 3 tiny torroids but it works well. There is another design you can build

Bore da, Arv! Sut dych chi? (Dw i'n dysgu siarad Cymraeg!) Related? There are teeming millions of we of the Evans clan!

Hello, The other time when I did a search on E.. Y, with the keyword Ubitx, I came across this. A filter, but I don’t know any more...

Bob, I would agree with Gary's suggestion to add the Broadcast Band high pass filter. I had a similar experience to your son's one afternoon.? All of a sudden I had birdies all over the band.?

Patrick, The v5 firmware uses a different SSB filter frequency.? That software will not work with a v4 board.? Here is a link to the KD8CEC software that has both the v4 and v5 board software.

It's been lots of years since I have looked at huff-and-puff oscillator stabilization. What I wrote in that last post is incorrect, there's more going on here. Jerry, KE7ER

So it seems the Huff and Puff method is for providing the final little bit of frequency stabilization to a VFO that is already adjusted to oscillate very close to the desired frequency. Would the Huff

This may be an alternate way of looking at what you are proposing. I suspect you are describing a phase-locked-loop. And that yes, you have tried it. There's a phase-frequency-detector inside the

That was a typo. The chip is the ATTiny841. Tom, wb6b

I was expecting Arv to write in about H&P schemes. Between him and Hans, there is all we know about how this scheme works. The challenge of Huff and Puff is that it needs a very stable oscillator to

The Arduino (ATMega328) can count external clocks up to 1/2 the clock used to run the chip. With a 16mhz clock for the ATMega328 that would be external frequencies up to just shy of 8mhz can be

Can you hear static or at least an increase in background noise as you plug the antenna in? Perhaps bring a wire from the antenna connector over near the 25mhz crystal of the Si5351 on the Raduino,