Date   

Re: I'm really stuck! No Xmit Pwr. #ubitx

Rick Price
 

Chip,
Attached pdf file of RMS and DC voltages in a working RF section that was put on the board sometime after the first of the year.  I believe either Glenn VK3PE or Jerry KE7ER made it just can't remember who for certain.  Any way hope it helps in your trouble shooting and no xmit pwr.
 
Rick
KN4AIE


uBitX CW Sidetone Volume

Mark M
 

I find the CW sidetone on my uBitX V3 to be annoyingly loud. Any suggestions on how to quiet it down? I'm running Ian's 1.08 firmware.

Thanks...      Mark    AA7TA


Re: uBITX Version 4 first attempt #ubitx-help #ubitx

William Cullison <wa8vih@...>
 

Ashhar and the group,

I am very happy with my µBitx other than getting my butt kicked trying to work digital. The only problems I've had with mine have mostly been self caused. Yes the power is uneven as delivered. Show me a better deal in a SSB/CW transceiver and I'll buy it next instead of another µBitx. My Heathkit HW-8 cost more as a kit and when I sold it on EBay about a year before I decided to get back into ham radio. Yes I screwed up!

73 Bill WA8VIH/4

On Wed, Jun 20, 2018 at 7:41 PM, Arv Evans <arvid.evans@...> wrote:
Blame your own country postal or package delivery service. 
_._

On Wed, Jun 20, 2018 at 4:17 PM Ray Koster via Groups.Io <raykoster=talktalk.net@groups.io> wrote:
They sold the kits, who else should I blame for damage in transit?



Re: uBITX Version 4 first attempt #ubitx-help #ubitx

Arv Evans
 

Blame your own country postal or package delivery service. 
_._


On Wed, Jun 20, 2018 at 4:17 PM Ray Koster via Groups.Io <raykoster=talktalk.net@groups.io> wrote:
They sold the kits, who else should I blame for damage in transit?


Re: Homebrew from scratch #ubitx

VK3HN
 

Hi Ron, Jack and James.  'Hambus' -- there's an idea.  Modules are common enough, Mark at Minikits has a complete HF transceiver with header connected modules, some (crystal filters, BPFs, LPFs) of which stack.  These hint at a bus, with consistent assignments of power, control and signal lines to specific pins.  Other projects have pluggable daughterboards (the venerable Sierra's neat band plugins, for example).  

The idea of a universal bus is appealing. In computer tradition, the Hambus could be standardised and managed as a product in its own right. Modules could then be designed for Hambus versions. Imagine mixing and matching homebrew and vendor modules on a Hambus.  Layout would be important for screening and short paths, but  James' suggested 20 double 0.1 headers should be enough separation.  Perhaps some strategically placed jumpers on certain bus lines (audio, RF) could trim signal bus lines for better isolation. 

First problem to solve -- how do you get physical strength when you edge mount a vertical board on a double row 0.1 header?  Slide the board between the two rows, bend pins in, solder both sides?  

Minikits M1: https://www.minikits.com.au/m1-transceiver.htm


Re: I'm really stuck! No Xmit Pwr. #ubitx

Glenn
 

Chip, your testing shows no modulation input.  So you will get no output power.

Did you try keying up the uBITX in CW mode?

glenn


Re: uBITX Version 4 first attempt #ubitx-help #ubitx

oz1lqb@...
 

Hi to all..
Ray i have received 4 kits in the last 2 month all in perfect condition..
they all works just fine..
i dont now about you but the reason i got to be a ham was to experiment and the BITX40 and uBITX is for me the perfect platform to do that
and i think that most off the people fells the same 
last but not lest i have been a experimenting ham for 32 years and Farhan's kits has been for me the ideal kit at a price i like 
Vy 73 De OZ1LQB / Claus


Re: Output power

brad martin
 

Thank you all for the replies. Unfortunately my idea on paper does not look like it’s going to work out based on my experiments last night. My idea was that I have a cb type swr meter and I was going to make it into a digital swr and power meter and well being that it’s not for Hf the output voltage of the meter didn’t line up with output power. .6v on 80, 1v on 40 and 30 and 1.5v on 20. So oh well on that one. I have Arduinos all over the place so using a mega for this is not a loss for me. I almost use them as coasters at this point. I would see a deal on them and get them over the last few years and as far as time goes I always try to make time for my hobbies because life is short right :).

I have seen the dummy load with a cap and diode before and have been planning on adding that to my dummy load as well. When choosing the diode what properties are you looking for?

I have a goal most people would probably say I’m crazy for doing. The plan is that my first HF contact will be done using things I have made, built, or repaired. So far everything I have (power supply, uBITX, antenna, CW paddle, dummy load, and other random stuff) and the swr meter is the only thing I have left that has not has been modified.

73
Brad
KG5SPR

On Wed, Jun 20, 2018 at 3:39 PM Jerry Gaffke via Groups.Io <jgaffke=yahoo.com@groups.io> wrote:
The BAV21 is not a bad choice for the dummy load dectector.
Very cheap, which is of course my primary criteria.

Forward voltage drop appears to be around 0.5v at 0.1ma from their graphs,
the detector would have a much smaller current going through it.
So should still be able to measure 10mW into the dummy load,
though factoring in that drop to the calculations becomes more important than with the 1n5711. 

I'd still use the 1n5711 for the diode RF probe.

Jerry



On Wed, Jun 20, 2018 at 12:27 pm, Jack Purdum wrote:
We use a BAV21 diode in our design, which is rated at 250V.
 


Re: Stray RF?

William Cullison <wa8vih@...>
 

Allison I don't recall whether it occurs on antenna and/or dummy load. I'll check it out this evening. Poor grounding could also be part of the problem because of all the in and out of the case making changes my grounding is lacking. I guess I better fix that as well. 

Marco, I had to make an unscheduled trip past Skycraft today so I picked up a handful of clip-on ferrite cores. I'm still on factory length cables myself. 

I have a lot to relearn as it just seemed so much easier building my own equipment in the late 60's. Heck building an ATV transmitter on 23cm seemed easier then.

Thanks to both of you.

73 Bill WA8VIH/4

On Wed, Jun 20, 2018 at 12:51 PM, M Garza <mgarza896@...> wrote:
Hi Jay,
I actually have not cut any of the factory cables.  I grouped them and put the clip on ferrite on them.  I did not include the antenna (used some small coax for that).  I will be trimming the cables, once I know what case I will be using and I am done with my mods.  The ferrite keeps my display from going blank and the NANO from resetting.  It was getting really annoying.

Marco - KG5PRT 

On Wed, Jun 20, 2018, 10:53 AM Jay - WS4JM <ws4jm@...> wrote:
Where to add the ferrite? On the antenna leads?



Re: uBITX Version 4 first attempt #ubitx-help #ubitx

Ray Koster
 

Is it or is it NOT Farhan's company?....he does little it seems, other than popup now and again on here, my local postal people have nothing to do with the poor way these kits are packed !! I doubt that this kit would pass Ofcom spec's with regards to harmonic suppression.. Stop defending Farhan...let him answer the questions here


Re: uBITX Version 4 first attempt #ubitx-help #ubitx

Doug W
 

Ray before you send messages to the thousands of users on this list I would suggest you learn how to include at least a portion of the message you are replying to.  You just sent four messages in a row that appear to be responses to other posts.  Without including something from the post in question you are just aimlessly ranting.
--
www.bitxmap.com


Re: uBITX Version 4 first attempt #ubitx-help #ubitx

Ray Koster
 

Please dont be so insulting towards my comments...you may think your the god of the Bitx community and of the arduino world but there are many out there that just keep working away to build and get going projects. We normally dont pass comments because when we do, people like you just disect the posts and turn them into something that they are not...B***C**P is hardly a term to be used on here


Re: uBITX Version 4 first attempt #ubitx-help #ubitx

Ray Koster
 

Please dont comment if you have nothing better to add, a destroyed IC736....haha thats sad!!!


Re: uBITX Version 4 first attempt #ubitx-help #ubitx

Ray Koster
 

They sold the kits, who else should I blame for damage in transit?


Re: uBITX Version 4 first attempt #ubitx-help #ubitx

Ray Koster
 

It would be nice if I had ever received a kit that was not damaged in the post...I would Suggest Ashhar Farhan, that you read the rest of the thread


Re: I'm really stuck! No Xmit Pwr. #ubitx

Latham, Chip
 

Thank You So MUCH Howard!!!!!
God Bless
Chip


Re: I'm really stuck! No Xmit Pwr. #ubitx

Howard Fidel
 


I will call you tomorrow. I'm not sure yet what time.

Howard

On 6/20/2018 5:33 PM, Latham, Chip wrote:
Howard that would be great The Scope is a 70 Mhz and I  have a 10x probe. Its a cheap Hantek DSO5072p 
I will be available tomorrow until 5pm central standard My e-MAIL IS CLATHAM@... DIRECT PHONE IS 405-742-5278 DURING DAYTIME.



Re: Audio feedback during transmit? #ubitx

Tim Gorman
 

The only time I have had this problem was with a bad ground connection
between the ubitx and the chassis it was mounted in.

Could it be that you somehow fixed a bad ground while playing with the
relay?

tim ab0wr

On Wed, 20 Jun 2018 09:33:52 -0700
"Jim Reagan" <jimreagans@gmail.com> wrote:

Well, this has been interesting...  I started playing with a relay,
which worked, but on the air testing with a local amateur made me
wonder if "maybe" I had the radio setup improperly. He said my audio
sounded "Weird and weak". So I started using uBiTX memory manager. I
read many of the calibration procedures and played with some of the
calibration and BFO numbers.  Once I got the radio setup to my
liking, the audio "feedback" during transmit went away!  Am I crazy,
or was this part of the problem? Your mileage may vary, Jim W0CHL



Re: I'm really stuck! No Xmit Pwr. #ubitx

Latham, Chip
 

Howard that would be great The Scope is a 70 Mhz and I  have a 10x probe. Its a cheap Hantek DSO5072p 
I will be available tomorrow until 5pm central standard My e-MAIL IS CLATHAM@... DIRECT PHONE IS 405-742-5278 DURING DAYTIME.


Re: I'm really stuck! No Xmit Pwr. #ubitx

Latham, Chip
 

This will be a jumbled Mess But bear with me. I did the best I could to make this understandable and have included the PDF document as an attachment that the measurement were listed from
As I have said before you will find my measurements very close to what they should be .
Just for the fun of it I replaced the 2 IRF510 and made no difference in the out puts.
Any clues or help would be greatly appreciated. 
This is one of the boards That I'm afraid might have been shoved out the door to make room for Ver4 Farhan paid DHL shipping when I only paid for Indian Postal.
I'm sure this is not the case though. But someone may have skipped the final Transmit check.
The receive is very good 
Someday soon Maybe a Little Transmit.
I hope this makes sense to someone .

TX, PTT
50-ohm
dummy load,
no
modulation
 
 
 
Quad-1, Q20, 2N3904,
base, pin 1 2.31 VDC  My Reading 2.24 VDC
“ 18 Q20-2 1.6 VDC “ Quad-1, Q20, 2N3904, my reading 1.6 VDC
emitter, pin 2
“ 19 Q20-3 7.5 VDC “ Quad-1, Q20, 2N3904, My Reading 7.28 VDC
collector, pin 3
“ 17 Q22-1 6.7 VDC “ Quad-1, Q22, 2N3904, mine 6.7
base, pin 1
“ 18 Q22-2 6.1 VDC “ Quad-1, Q22, 2N3904, mine 5.57
emitter, pin 2
“ 19 Q22-3 11.4 VDC “ Quad-1, Q22, 2N3904, mine 10.0
collector, pin 3
“ 17 Quad-1, Q40, 2N3904,
base, pin 1 2.2 VDC , mine 2.24
 
 
“ 18 Q40-2 1.6 VDC “ Quad-1, Q40, 2N3904, mine 1.6 VDC
emitter, pin 2
“ 19 Q40-3 7.3 VDC “ Quad-1, Q40, 2N3904,mine 7.28  VDC
collector, pin 3
“ 17 Q42-1 6.7 VDC “ Quad-1, Q42, 2N3904,mine 6.64VDC
base, pin 1
“ 18 Q42-2 5.9 VDC “ Quad-1, Q42, 2N3904,mine 5.92 VDC
emitter, pin 2
“ 19 Q42-3 11.3 VDC “ Quad-1, Q42, 2N3904,mine 10.0VDC
collector, pin 3
“ 20 Q6-1 2.0 VDC Fig-5, mine 2.0VDC
section D5
Quad-2, Q6, 2N3904, base,
pin 1
“ 21 Q6-2 1.3 VDC “ Quad-2, Q6, 2N3904,mine 1.3VDC
emitter, pin 2
“ 22 Q6-3 9.8 VDC “ Quad-2, Q6, 2N3904,mine 9.6VDC
collector, pin 3
“ 23 Q90-1 3.3 mine 3.52VDC
 
 
 
“ 24 Q90-2 3.0 VDC “ Quad-4, Q90, 2N3904, mine 2.8VDC
emitter, pin 2
“ 25 Q90-3 11.3 VDC “ Quad-4, Q90, 2N3904 mine 10.0VDC
collector, pin 3
 
26 Q911-1 0.22 VDC, My Reading 0.39 VDC
 
27 Quad-4, Q911, 2N3904,
emitter, pin 1“  Q911-2 0.75 VDC “ My Reading 1.06 VDC

base, pin 2  0.75 VDC  My Reading 1.06 VDC
“ 28 Q911-3 10.9 VDC “ Quad-4, Q911, 2N3904, My Reading 11.52 VDC
collector, pin 3
“ 29 Q912-1 0.22 VDC “ Quad-4, Q912, 2N3904,  My Reading .37 VDC
emitter, pin 1
“ 30 Q912-2 0.75 VDC “ Quad-4, Q912, 2N3904, My Reading 1.05 VDC
base, pin 2
“ 31 Q912-3 10.9 VDC “ Quad-4, Q912, 2N3904, My Reading 11.5 VDC
collector, pin 3
“ 32 Q92-1 0.22 VDC Fig-5,My Reading 0.36 VDC
 
“ 33 Q92-2 0.84 VDC “ Q92, 1/4 PA driver, My Reading 1.05 VDC
2N3904, base, pin 2
“ 34 Q92-3 10.9 VDC “ Q92, 1/4 PA driver, My Reading 11.5 VDC
2N3904, collector, pin 3
“ 35 Q93-1 0.22 VDC “ Q93, 1/4 PA driver, My Reading 0.35VDC
2N3904, emmiter, pin 1
“ 36 Q93-2 0.84 VDC “ Q93, 1/4 PA driver, My Reading 1.04 VDC 
2N3904, base, pin 2
“ 37 Q93-3 10.9 VDC “ Q93, 1/4 PA driver, My Reading 11.45 VDC
2N3904, collector, pin 3
“ 38 Q96-1 0.22 VDC “ Q96, 1/4 PA driver,My Reading 0.35VDC
2N3904, emmiter, pin 1
“ 39 Q96-2 0.88 VDC “ Q96, 1/4 PA driver, My Reading 1.04 VDC
2N3904, base, pin 2
“ 40 Q96-3 10.9 VDC “ Q96, 1/4 PA driver, My Reading 11.43VDC
2N3904, collector, pin 3
“ 41 Q97-1 0.22 VDC “ Q97, 1/4 PA driver, 2N3904, My Reading 3.54VDC
emmiter, pin 1
“ 42 Q97-2 0.84 VDC “ Q97, 1/4 PA driver, 2N3904, My Reading 1.04 VDC
base, pin 2
“ 43 Q97-3 10.9 VDC “ Q97, 1/4 PA driver, 2N3904, My Reading 11.45 VDC
collector, pin 3

TX, PTT
50-ohm
dummy load,
no
modulation
44 Q94-1 3.1 VDC Fig-5, My Reading 4.7 VDC
section F3
Q94, IRF510, 1/2 PA final,
gate, pin 1
45 Q94-2 11.3 VDC “ Q94, IRF510, 1/2 PA final, My Reading 11.9 VDC
drain, pin 2
46 Q94-3 0 VDC “ Q94, IRF510, 1/2 PA final, My Reading 0.00 VDC
source, pin 3
47 Q95-1 3.3 VDC “ Q95, IRF510, 1/2 PA final, My Reading 4.82 VDC
gate, pin 1
48 Q95-2 11.3 VDC “ Q95, IRF510, 1/2 PA final, My Reading 11.9VDC
drain, pin 2
49 Q95-3 0 VDC “ Q95, IRF510, 1/2 PA final, My Reading 0.00 VDC

source, pin 3
50 U2-1 4.2 VDC “ LM78L05ACZ bias  My Reading 5.02 VDC
regulator, out, pin 1
51 U2-2 0 VDC “ LM78L05ACZ bias My Reading 0.00 VDC
regulator, gnd, pin 2
52 U2-3 10.9 VDC “ LM78L05ACZ bias My Reading 11.64 VDC
regulator, in, pin 3