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Date

Re: Grey case OUT OF STOCK

 

At where?...Is this related to Sunil's case?

On Mon, Oct 1, 2018, 12:58 AM Tom <tomnagy@...> wrote:

Website shows grey case out of stock.

Can I expect this case to be back in stock with a few days??

?-Tom, W3TLN


Re: Adding /modifying firmware. #firmware

 

That¡¯s right! ?

Your call sign is entered using ?a third bit of software - uBITX Manager that runs on Windows and interfaces to the Raduino via USB.? You can set a whole range of parameters for the uBITx using KD8CEC¡¯s uBITx Manager.

Mike

On Mon, 1 Oct 2018 at 4:44 AM, KM4TRT via Groups.Io <garello=[email protected]> wrote:
So if I buy say the Adifruit cable with the built in FTDI and download the driver, then I can download direct to the Nextion with the 4 pin connector instead of the sd card?


Re: BITX40 Potentiometers for volume and tuning

 

The value of the pots is not critical. Log/Audio taper for Volume and Linear for tuning. As noted above, the middle tab of the tuning pot may not be the wiper - particularly if it's a 10-turn - and yes 10k works well there, but if watchagot is greater 10nF wiper to ground bypass..
73
ZL2DEX


Re: 10K Tuning Potentiometer has a very small range for BITX40

M Garza
 

Sorry,
Is this a 10 turn pot or regular??

My previous comment is for a 10 turn pot.

Marco - KG5PRT

On Sun, Sep 30, 2018, 10:02 PM M Garza <mgarza896@...> wrote:
Please verify that the potetionmeter is wired correctly.? The middle tab is usually not the connected to the wiper.

73s

Marco - KG5PRT

On Sun, Sep 30, 2018, 9:49 PM Michael Trager <mtrager1@...> wrote:

Anyone know why the range is so small?

?

Do I need an update for the display/ VFO?

?

Michael


BITX40 Potentiometers for volume and tuning

Michael Trager
 

¿ªÔÆÌåÓý

What is the value of the volume pot that should be used?

?

Tuning Pot = 10K ???

?

Michael


Re: 10K Tuning Potentiometer has a very small range for BITX40

M Garza
 

Please verify that the potetionmeter is wired correctly.? The middle tab is usually not the connected to the wiper.

73s

Marco - KG5PRT

On Sun, Sep 30, 2018, 9:49 PM Michael Trager <mtrager1@...> wrote:

Anyone know why the range is so small?

?

Do I need an update for the display/ VFO?

?

Michael


10K Tuning Potentiometer has a very small range for BITX40

 

¿ªÔÆÌåÓý

Anyone know why the range is so small?

?

Do I need an update for the display/ VFO?

?

Michael


Re: Modified Baofeng Mic on BitX40 with AmateurRadiokits.in case

 

I made up a patch cord that had 2 connectors for the Baofeng mic which were terminated with a 4 pin connector. I did this because I didn't want to cut the Baofeng connector off in case I wanted to use it with the Baofengs that I have. ? I only use the mic side as I wasn't interested in the speaker in the Baofeng since I have a speaker in the case for my BitX40.? I was also able to test a Kenwood handheld speaker mic using the patch cord to compare audio quality of both mics.?? For whatever its worth the Baofeng had low frequency response even after I made the hole for the mic larger.? The Kenwood speaker mic sounded better.?? The best audio quality was with the mic element that came with the BitX40.?? I installed that into a Cobra CB mic.


Re: Modified Baofeng Mic on BitX40 with AmateurRadiokits.in case

 

Hello

Thank you for all the info.? I think I'm going to go with modifying the Baofeng mic by completely removing the speaker, replacing the existing electret mic with the one that came with the Bitx40 kit, and cutting off the current male 2.5/3.5mm end and replacing with one stereo 3.5mm jack.? I'll put the common gnd for the mic and ptt on the sleeve.

I'll use the speaker that came with the amateurradiokits case.

One thing the sort of confuses me.? Why don't I need to be worried about the sleeve shorting to the case?? Is the case at gnd potential somehow?


Re: Modified Baofeng Mic on BitX40 with AmateurRadiokits.in case

 

Also If yu are to use the stock mic element in the baofeng mic its even easier as there is no need to run any wires up to the element like I did. So just use the solder pads m and m-?


Re: Modified Baofeng Mic on BitX40 with AmateurRadiokits.in case

 

Timothy,

I no longer have that mic as it ws sold with that particular ubitx months ago.

What I did was replace the electret element of the baofeng with another I had which was more sensitive. I just hot glued the new one in. I remember removing resistor r3 from the board on the ptt button path. I then used the stock ptt button which will short to gnd at the solder pads when pressed of course. I did away with the internal speaker. I soldered 2 wires to the new electret and soldered one to gnd pad (M-) and the other to pad M. And there you go.?

Simply you want in the mic a ptt to ground for keying the radio and wire to the electret element for audio, obviously another wire to the element for ground too but that can attach to the same place as ptt ground.?

I¡¯m using a cb style coffin mic now. This has a separate switch inside which alows the ptt to ground when switched and bring in the mic circuit. When depressed the mic element is completely cut out of the circuit too...?


Grey case OUT OF STOCK

 

Website shows grey case out of stock.

Can I expect this case to be back in stock with a few days??

?-Tom, W3TLN


Re: uBitx on teensy with JT/FSQ and WSPR beacons

 

Code, which is still being modified can be found at?.?


Re: uBIT and antenna connector and Nextion 7"

Rich
 

This one is going to be base station at home and won't be moving.? I've already got plans for another one to go mobile :P


Re: JackAl System Preview

Jack Purdum
 

Mikele:

The JackAl board is not being sold yet, but will be sold by QRPGuys.com when it's ready, which we think will be at the end of Nov. The board will retail for $50, but you must supply the display (5" or 7") ($34-$44), the Teensy 3.6 ($30), and the PJRC audtio board ($14). The video can be seen at hamradiodesigns.com

Jack, W8TEE

On Sunday, September 30, 2018, 1:48:00 PM EDT, 9a3xz <socijalizam1@...> wrote:


I m also interesting for price + shiping JackAl board!? 9a3xz,Mikele

Virus-free.


Re: uBIT and antenna connector and Nextion 7"

 

Rich,
Before you go to the work of designing and building your case, consider the pros/cons of using a larger and stronger mechanical connector for how you see yourself using your uBITX and the size of the coax you will be wanting to attach to it.
Since the UHF connector has been the defacto standard in HF/VHF for so many years, there are many inexpensive screw on adapters. If you chose a UHF SO239 connector for your uBITX, you have a solid mechanical solution to screw on an adapter to BNC, SMA, type F (for your surplus Sat TV coax). etc.? Compromise, but flexible/adaptable.?
The cost of type N connectors and adapters is also coming down so this may work for your situation too.
Again, just another viewpoint to consider.

Rgds,
Gary





Re: Modified Baofeng Mic on BitX40 with AmateurRadiokits.in case

Timothy Fidler
 

Carl,? if you tell the assembled mob what wire colour you wired where on the plug ie Tip , centre , rear? and what the functionality was I am sure you will get some high fives from those who don't have docos on that brand of? Mike.


Re: JackAl System Preview

9a3xz
 

I m also interesting for price + shiping JackAl board!? 9a3xz,Mikele


Re: uBitx has a bit too crispy / semi-distorted audio even on low signal levels #ubitx #ubitx-help

 

You may be attacking the wrong problem. If I interpret the description of the audio correctly, "crispy" may be audio that has significantly suppressed lower frequencies. I encountered this problem as soon as I fired my V4 uBitx. I found out that the problem was related to the output of the 1st mixer (45 MHz) falling too close to the edge of the IF filter. In my case it was about 2500 Hz. If you are using the CEC software you can verify the symptom by adjusting the IF SHIFT frequency. After figuring out the real problem and adjusting the oscillator frequency, I am getting very good audio and much increased receiver sensitivity.

--Ron? ? ?N7FTZ?

On Sun, Sep 30, 2018 at 3:34 AM Raj vu2zap <rajendrakumargg@...> wrote:
The distortion is caused by improper biassing the final transistor pair. There will be
no distortion by taking audio from volume pot.

Raj

At 30-09-18, you wrote:
>Would taking audio from the wiper of the vol pot on the v4 not just amplify the distortion? Or will this be bypassing the audio??





Re: JackAl System Preview

 

Please add me to purchase your kits thanks?
KE7GO steve