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Re: No Idea

 

¿ªÔÆÌåÓý

I worked out the wiring for the usb. ?Had a mini usb that I cut about 12 inches and wired to the usb back socket. ?I did that so I could use FT8 and other digital modes. ?I have a picture Buddy that I will try to find. ?The wire color is a standard I understand. ?I will try to post it here tomorrow.
Al
KB4RA


On Jun 2, 2018, at 9:40 PM, hotrod541@... wrote:

First let me thank all who responded to last post, your ideas were a great help putting my uBITX together. I now am at the point where I have no idea how to proceed. I am using a case from Sunils and it really is looking great. ?Shipped were a number of boards that help with the assembled case. ?There is a board for ?USB, D-9, and two other plugs at the rear of the case. ?There is no paperwork to explain this board. ?I have checked the Internet with no luck. ?I would like to hook up but have no idea where to get the connections from. ?Any help would be of great help. Thanks

Buddy3223
KJ4ZSI

Re: Transmitter Mods

 

I guessed that installing the mod would not affect only 1 band but I thought maybe I bumped something else.? As you suggested I'll wait a few days to see if the band wakes up.
--
Lee - N9LO? "I Void Warranties"

?
No Idea

[email protected]
 

First let me thank all who responded to last post, your ideas were a great help putting my uBITX together. I now am at the point where I have no idea how to proceed. I am using a case from Sunils and it really is looking great. ?Shipped were a number of boards that help with the assembled case. ?There is a board for ?USB, D-9, and two other plugs at the rear of the case. ?There is no paperwork to explain this board. ?I have checked the Internet with no luck. ?I would like to hook up but have no idea where to get the connections from. ?Any help would be of great help. Thanks

Buddy3223
KJ4ZSI
Re: Variable Power Out

 

Have you thought about lowering the audio signal you have feeding the
ubitx? I know I can vary the output power a lot with my two-tone
generator by just cranking the amplitude pot on the generator up and
down.

tim ab0wr

On Sat, 02 Jun 2018 08:34:42 -0700
"Dennis" <dennis@...> wrote:

I have been operating FT8 with the uBITX and in some situations would
like to use it to drive my linear. Problem is that It puts out more
power than I want going into the linear. On 20m last night I fired up
the linear and was putting out 100 watts. Way more than I need for
this mode so I immediately went back to barefoot. The linear has only
High and Low settings (I was using low of course). Is there a simple
way to vary (lower) the output power? A new knob on the front panel
would be ideal. HI

?

73, Dennis

W7DRW
Re: Power supply question

 

A couple of 5amp or 10amp Silicon diodes (5 watt rating) will give you a
voltage drop of about 1.2v or 12.6v feeding the board.

I had to crank up my power supply to 15.1v to get a consistent 12v out
of a 7812 feeding the mainboard.

tim ab0wr

On Sat, 02 Jun 2018 08:25:45 -0700
"KE0GYC" <dragonfanatic90@...> wrote:

I believe 13.8 is considered the upper limit for the uBITX main
board.? It should work fine as-is, but I wouldn't push it any hotter.
If you wanted to be extra careful, you may want to put a 12v voltage
regulator like a LM7812 inline with the main board's power.? The PA
power line (brown wire, IIRC) can run off the higher voltage just
fine and may get you a bit more power even.
Re: RF power chain mods and improvements..

 

Yes its a significant issue.? ?When tuning the 28 to 29 mhz range the spur falls in the
upper aeromobile and HF marine band.??


Allison
Re: boosting the power on 28 MHz #ubitx

 

Essentially the same The 2n2222a has a few minor spec notes but they are the same so long as
its the TO18 metal part.? Do not expect miracles.? there are a lot of other changes that go with that.

Also do Farhan's Q90 mod.

Allison
Re: My Ubitx pics

 

Nicely done!!?

WA9DOH

On Sat, Jun 2, 2018 at 3:42 PM, Michael Hagans via Groups.Io <mikehagans@...> wrote:
Here's a couple pics of my just finished Ubitx project...I call it my Drake TR8 QRP? built in a Drake MS7 speaker cabinet...Mike W4ZGI


S meter #ubitx #ubitx-help #arduino

??? ??????
 

Hello everyone i want to ask about the s meter i do it like the diagram Which is includes lm368 when i i programming by ubuub manager i i g the max value same the minimum value i try alot and nothing changes accept the value and also it come same so do hach something that can help me or ideas or external s meter ??
Re: BiTX 40 for sale

 

Hi all,

? The BitX is sold. ?Thanks.

73
Phil W1PJE
Re: RF power chain mods and improvements..

 

¿ªÔÆÌåÓý

Its better to take care of this before it gets to the RF amplification section of the uBITx¡­

?

?

From: [email protected] [mailto:[email protected]] On Behalf Of Gordon Gibby
Sent: Saturday, June 2, 2018 4:35 AM
To: [email protected]
Subject: Re: [BITX20] RF power chain mods and improvements..

?

A lot of people use a T- type tuner to connect to their feedline; these might provide a bit of filtering of the lower undesired frequency.


On Jun 2, 2018, at 01:38, Kelly Jack <kellyjack1968@...> wrote:

Not a solution but if the uppermost lpf is not going to be used could it be rengineered for 160m?


Virus-free.

Re: Transmitter Mods

 

¿ªÔÆÌåÓý

Probably 20 was dying when you were listening. See what happens over time. There is nothing in the mod that can affect audio levels.

On 6/2/2018 6:34 PM, Lee wrote:

I installed the inductor and capacitors, thanks Howard.? My output changed across the bands.? A funny thing happened.?? The receive audio on 20 meters dropped way off.?? 40 meters is nice and loud.? I heard someone running a beam and lots of power on 20 and he was clear but at full volume he was about 20% as loud as 40 meter static.? Did 20 meters just go very quiet or did I create a problem?
--
Lee - N9LO? "I Void Warranties"

?
Re: BiTX 40 for sale

Dennis Yancey
 

I will take it... send me PayPal info..
Re: Transmitter Mods

 

I installed the inductor and capacitors, thanks Howard.? My output changed across the bands.? A funny thing happened.?? The receive audio on 20 meters dropped way off.?? 40 meters is nice and loud.? I heard someone running a beam and lots of power on 20 and he was clear but at full volume he was about 20% as loud as 40 meter static.? Did 20 meters just go very quiet or did I create a problem?
--
Lee - N9LO? "I Void Warranties"

?
Re: My Ubitx pics

VE7CWS WRSeiler
 

SWEET!!!!
My Ubitx pics

 

Here's a couple pics of my just finished Ubitx project...I call it my Drake TR8 QRP? built in a Drake MS7 speaker cabinet...Mike W4ZGI

IMG_3531.JPG
IMG_3528.JPG

Re: Instruction Manual needs revision #ubitx

[email protected]
 

I have attached my first pass at the "MBITX TUNEUP" instruction, and welcome your comments.? I have aimed for ease of understanding, particularly for newcomers to our interesting hobby.?
--
Jon Titus, KZ1G
Herriman, UT USA

uBITX T_R Switch.pdf
uBITX T_R Switch.pdf

Re: Variable Power Out

 

¿ªÔÆÌåÓý

Put a pot in between the audio from the computer and the mic input to the radio. Then you can adjust for the desired level. ?Alternatively check to see if you can control the output level, either from the software or the computer¡¯s volume control.



Clark Martin
KK6ISP

On Jun 2, 2018, at 8:34 AM, Dennis <dennis@...> wrote:

I have been operating FT8 with the uBITX and in some situations would like to use it to drive my linear. Problem is that It puts out more power than I want going into the linear. On 20m last night I fired up the linear and was putting out 100 watts. Way more than I need for this mode so I immediately went back to barefoot. The linear has only High and Low settings (I was using low of course). Is there a simple way to vary (lower) the output power? A new knob on the front panel would be ideal. HI
Re: Nextion Display

 

I have a 3.2 ordered and waiting for it to arrive. I am using the 1.08CEC firmware from Dr. Ian and like it a lot. I am adding 8 switches to it. I know the manager has options for 6 but I am adding one for FKEY and momentary toggle for PTT. I would appreciate any information I can get on the Nextion Display. I downloaded the software on the Nextion site but have not loaded it yet to check it out. Thanks Dr Ian for all your great work.
73's kn4ud
kn4ud@...
--
Allen ?Merrell
Re: LCD Interface Question: Parallel or I2C? #bitx20 #bitx40help #firmware

 

yes...it frees up 6 i/o lines


On Sat, Jun 2, 2018 at 3:04 PM, Allen Merrell via Groups.Io <kn4ud@...> wrote:
I2C frees up some pins. I2C only uses 2 pins plus power and ground. This was my reason to go to I2C.

73's kn4ud
--
Allen ?Merrell




--
Paul Mateer, AA9GG
Elan Engineering Corp.

NAQCC 3123, SKCC 4628
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