开云体育

As the "Flutter Fix" topic seems to be getting pretty wide, I thought it would be good to focus a little more closely on the version control issue. Here's a sample of the header block I use on my

It would work. ?And might be ok at 5W QRP power levels. ?If the SSB transmitter perfect and your code practice oscillator has a perfect sine wave with shaped rise and fall times at the edges of the

I think it would be too much trouble for me to add CW unless someone can figure out what Farhan has provided in the code. And just plug a code practice oscillator into the mic jack. Maybe it is

It's working now. It was just that I removed the three tokens at the bottom of that section of code. And Jerry said to remove two, like he has in his snippet, and leave the original one after pasting

One of the things I noticed about my first audio tests, was that I was off frequency. The Raduino needed to be calibrated to offset the zero beat so I wouldn't sound high pitched.? You can easily

A couple of Quid/Bucks for a CB hand microphone, But a DC blocking cap on the mic lead to it from the BITX-40 and away you go .. It couldn't be any problem easier, All this talk of buying boxes and

A very long time ago, as a repeater user, I had a bell systems Trimline handset, and with very minor additions to the old HeahKit HW202 2 meter rig, it (the Trimline) worked as a mic, with DTMF pad.

Yep, as I scrolled down I saw Jack beat me to it. The telephone cord with four wires, and if you're slick you can put in a chassis mount jack. ?You also got a choice of colors and length with phone

Thanks everyone, I sincerely appreciate the responses! Jack, I hadn't even considered the weight issue- thanks for bringing it up. I think a 4 conductor telephone cord will solve the problem and I'll

There is an inexpensive, amplified adjustable electret mic on Amazon. Not sure if/how it would work. See

I *just* bought (via eBay) two 'Beofeng' microphones. They were US$2.89 each. One for my Beofeng (hey, it's cheap and works), and one to cut up for little home-brew rigs. One worked perfectly, the

Hi I saw another message about using a mic from a CB radio. There is a lot more that you can use. An old junk CB radio is a great source of parts that you may use on your BITX40

Are you asking about the BFO in the transmitter circuit? The BFO in the transmitter circuit hetrodynes the 4.9-5.0 MHz single sideband signal with a 12.0 (approx) MHz BFO signal, giving 12+5=17

I used a mic and jack from an old CB. I replaced the mic element with the element supplied with the BitX. I used the jack from the CB. wrote:

I like a coiled cord, too. However, unlike my base transceiver, when the rig weighs about a pound and I turn around mid-QSO to answer the phone only to see my B40 whiz by my head because of the

Hey Ryan,? I took one of my old Yaesu HT speaker mics, and rewired it for the BITX40,? It has a Electret?mic element in it already, and a PTT.? I see on amazon.com you can pic up a speaker mic for

It's all working at about 11.998500mhz. ? Q10 is the oscillator and has some high impedance nodes on the left hand side, poking at it around the base or L5 may either disturb the oscillator or show

Q10 is the xtal oscillator with L & C in series, to pull the xtal down a bit to suit LSB. If you can generate a second frequency from the Si then you can remove Q10 and use Q11 to buffer it to the

Also when I measure at L5 I was getting ~12MHz on my counter and when I measure at base of Q10 I was getting ~6Mhz.

I was wondering more about what the purpose of Q10 and Q11 serve. What I'm trying to do is take an output from SI5351 and replace the entire BFO circuit so I can easily switch between LSB and USB via