Hans, you will need to rewire the mic.
Remove R1
Connect mic -ve to ground
wire PTT button to ground and other end to data pin use that pin for
PTT
You will need a 4pin socket.
At 10-04-2017, you wrote:
Hi,
Does any one have experiance with connecting a handmic like this one
mh-34b4b ?
The ptt doesn't switch in the bitx, led on mic is lit. With the switch
delivered with the bitx the ptt works fine.
I tried the mic with the test circuit (led and resistor and it switches
the led on and of).
Any one an idea?
73's
hanz de PA3ZZ
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Hi, Does any one have experiance with connecting a handmic like this one?mh-34b4b ? The ptt doesn't switch in the bitx, led on mic is lit. With the switch delivered with the bitx the ptt works fine. I tried the mic with the test circuit (led and resistor and it switches the led on and of). Any one an idea? 73's hanz de PA3ZZ
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Hi Sarma I will try ...TKS
73 de py2ohh miguel
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You'll need both .ino files in your project. You're missing the upside down sketch which defines printFrequency.
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Re: The Users User Manual
Correction- the alignment instructions have been amended. Turn both controls down clockwise. Turning them up is COUNTERCLOCKWISE. R136 is to the right of the black, round, short, heatsink. This adjustment will ensure you have optimal power output for your rig. And you can turn it down for linear amplifiers. Output reading required. Alignment of the BITX40 The BITX40 comes pre-aligned out of the box. However, it may go out of alignment for some reason and here are the steps to align it. Keep the circuit handy while you do it. If you can't understand what it means to 'insert the ammeter into the power line' ask someone for help. 
- Attach a dummy load to the antenna
- Insert a ammeter (you may use your VOM meter in high amps range) into the PA power supply's positive line
- Keep the PA BIAS preset (RV1) to fully clockwise position. Now when you press the PTT button, the ammeter should read about zero.
- Increase PA BIAS without speaking into the mic until the PA current shows 100 ma
- Give a loud and long HAAAALLLOOWW into the mic and the current should jump to slightly over 1 amp
- Adjust the RV136 to increase the PA drive if the current doesn't jump all the way to 1A
- Keep monitoring your signal on a nearby receiver.
<>Note: You may use the RV136 to reduce the output power to drive an external linear or go QRPp. You should check the power settings with the multimeter, if and when you decide to use 24 volts.?Small adjustments may need to be made.
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Re: Birdie at 7199 - a surprising observation!
To: N7PXY Ash has just recently uploaded the Bitx40.ino file used in the shipped product. You should get this and upload it to your Raduino and make sure you still have Etherkit 2.0.1 library installed. This should be a factory reset. You can find and try changing a line of code to try and scare away the birdie later. Which is on line # 598. Here is the github link for Ashar Farhan's working sketch-?https://github.com/afarhan/bitx40
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fellow coders,
what follows is gibberish to those who do not use git to control their source code. ignore please.
i am pushed the production bitx40.ino to the repository. it is not raduino.ino, but bitx40.ino. ?i have a few pull requests pending, but before that, i would request you to merge into the small bits that were already fixed in the main.
following this, i will pull from you all.
- f
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hi ,
?please try to use TL074 instead for lower noise level than TLo84. regards ?sarma ?vu3zmv
On Sun, Apr 9, 2017 at 11:54 PM, Miguel Angelo Bartie via Groups.Io <py2ohh@...> wrote: Hi Farhan and friends
The link for the HF phase RX is ; I build also one phase transmitter ...using the same modules in? an inverted? way ...I will try to build a transceiver.... The main tip was? an All Pass Band Pass Filter ... using a TL084 ... made with QuadNet software looking for More than 40dB supression and ease to find parts. the link is : This all pass filter is for 300Hz to 3kHz ...and I use a band pass filter ... another TL084 : link The final results in a better supression than 40dB .... another aplications is to transform a SDR receiver in one Rx who dont need a PC ...link 73 from py2ohh miguel
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Re: shipping options, raduino, source code and website updates
College Professor Simon Thompson
I like and appreciate the term “comrades”.
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On Apr 9, 2017, at 12:14 AM, Ashhar Farhan < farhanbox@...> wrote:
comrades,
i have a few updates to tell you guys
1. hfsigs will now ship through DHL. that means you will get your radio within a week with full tracking. this costs $10 extra. if you want to save, the old shipping option is available too. gives you both options.
2. raduino is now available to be bought separately at $25. i have a number of raduino based projects that will bring online soon. if you dabble with other arduino projects or use the Si53551 in any other radios, this might be an excellent idea : it allows you to write your own code to do whatever you want it to.
3. the mystery of the bullet 5 in the bitx40 alignment is solved. instead of closing the </li> i had typed <li>. i have fixed it. many thought that that's where he elusive RV136 was explained. that is now fixed too. the station 10-1/2 is now in plain sight.
4. i have synced the bitx40 source code to what is being shipped on github.
- f
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Re: shipping options, raduino, source code and website updates
Dear Mr. Farhan, Thank you for taking the trouble to help me. Thank you for extending compassion and flexibility when I needed it.
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I was a few things. The first rookie mistake was setting the receiver to a certain freq, and the BITX to the same and transmitting. The raduino was a few hundred Hz off and not calibrated yet. The close proximity of the receiver, received the signal much better than a distant one would have, sounding kinda weak and kinda fuzzy. I used the receiver like this before getting the BITX and knew to collapse the antenna, and turn off DX so as not to overload the front end signal amplifier. Searching for TX signal clued me in that I was a bit off intended freq. Assimilating a calibration fix has been nice. I only used it once so far. I also replaced the original mic capsule which improved the fuzzy oscillation sound a bit more. It did sound a little bit fuzzy and weaker on WebSDR with original mic. I don't know the specs on it. It came from a broken "The Clapper" wall switch, and is the same size. So the short answer is yes, it was too close.?
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Every Arduino program must have a?setup() and loop() function. The?setup() function?is used to set the environment in which the program runs. It only runs one time when the program first begins to run. When your code in setup() finishes execution, program control immediate begins to execute the code you wrote for the loop() function. The code in the loop() function runs until: 1) power is removed, 2) your perform a reset, or 3) there is some kind of component or other failure.
Functions you write are called as part of the loop() function. The exception are Interrupt Service Routines which get called as needed, depending upon how you set them up.?
If all of this seems strange to you, print out the Raduino code, look for setup() and loop(), and see if you can follow what's going on. If you have your ham license and can still fog a mirror, I know you can learn to program an Arduino. It just takes a little time and practice.
Jack, W8TEE
From: Mark via Groups.Io <mark2w0jmk@...>
To: [email protected]
Sent: Sunday, April 9, 2017 3:51 PM
Subject: Re: [BITX20] Bitx-40 S meter
Thank you Jack but that went right over my head. I did try to add pinMode(A2, INPUT); To where I thought was the setup but had a load of errors straight away. Like I said I'm not one for this programming lark.
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So how did that get resolved? ?I assume that SW receiver was just too darn close. Jerry
On Sun, Apr 9, 2017 at 03:13 pm, John Smith wrote: On my SW receiver it sounded like I was talking into a fan. ?
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Re: Tuning with Si5351 and Rotary encoders
Thanks Jack, I'll give that a try and will let everyone know how it worked. I should be able to give it a try tomorrow, 73 de KB1VNA Eric
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I am getting this same error when attempting to compile
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Re: Birdie at 7199 - a surprising observation!
Which version did you use before (when you didn't have the clicks/birdie)?
What happens when you restore that previous version?
73, Allard PE1NWL
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Re: VFO/BFO selecting outputs
Jonathan,
You don't need to remove the xtal.
Much easier is to just remove R101 to disable the analog BFO alltogether.
Or lift one leg ("thumbstone" it).
If you ever want to go back to the original situation you only need to
reinstall R101.
73, Allard PE1NWL
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On Sun, April 9, 2017 22:46, Jonathan Peakall wrote: Got CLK2 going! I did have to change:
si5351.set_freq(11998500L*100ULL , SI5351_PLL_FIXED, SI5351_CLK2);
to
si5351.set_freq(11998500L*100ULL , SI5351_CLK2);
due to compiler complaints. Thanks for the help! Now off to solder on some
coax and remove the xtal.
Jonathan - KK6RPX
On 4/9/2017 9:40 AM, Jerry Gaffke via Groups.Io wrote:
Add this code to the bottom of the setup() function in the sketch:
//si5351.drive_strength(SI5351_CLK0, SI5351_DRIVE_2MA);
si5351.output_enable(SI5351_CLK0, 1);
si5351.set_freq(11998500L*100ULL , SI5351_PLL_FIXED, SI5351_CLK2);
T
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Re: Birdie at 7199 - a surprising observation!
The loaded sketch is what has been referred to in the group as the latest 'standard' raduino .ino sketch. And yes I had the Si5351 library 2.0.1 loaded in the IDE, that's what I don't understand. As you said this arrangement is supposed to eliminate the birdie. I guess I might have to reload an even earlier version than 1.05 and build up from there?? Any other ideas?
PJH, N7PXY
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Yes, the WebSDR online receivers are an excellent way of monitoring your transmit audio (I should have remembered that option) but be sure to use headphones and take precautions to keep the receive audio from getting back into your mic.
This is another problem with in station transmit audio monitoring. Sub-microviolt receivers and local transmitters mean high system loop gain and it does not take much audio leaking back from receiver to mic to cause feedback in the system which again masks the true nature of your transmitted signal.
Best regards,
Peter VK1XP
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On 10-04-2017 08:13, John Smith via Groups.Io wrote: I was told some similar things in the beginning about my monitoring my
muffled audio. On my SW receiver it sounded like I was talking into a
fan. Look on the internet for something Called WebSDR. These are
receivers around the country and the world. Using a nearby one of
these is practically indispensable when testing your transmitted
signal quality and range.
Here is a link to the main page. Filter the band and location at the
top of the stations list.-
And here is the link to the one I use most of the time.-
I can make it into this one in
Arizona from Oklahoma.
Links:
------
[1] /g/BITX20/message/24820
[2] /mt/4816007?uid=236039
[3] /g/BITX20/post
[4] /g/BITX20/editsub?uid=236039
[5] /g/BITX20
[6] /static/tos
[7] /g/BITX20/leave/defanged
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I was told some similar things in the beginning about my monitoring my muffled audio. On my SW receiver it sounded like I was talking into a fan. Look on the internet for something Called WebSDR. These are receivers around the country and the world. Using a nearby one of these is practically indispensable when testing your transmitted signal quality and range. Here is a link to the main page. Filter the band and location at the top of the stations list.-? And here is the link to the one I use most of the time.-??I can make it into this one in Arizona from Oklahoma.
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Raj vu2zap
Allard PE1NWL