Date   
Re: The sun orbiting the earth, spectrum analyzers and the uBITX

iz oos
 

Ours may be more called 'Learning by Tinkering' :), which involves some but not that much thinking, luckily enough!


Il 03/feb/2019 22:18, "Tom, wb6b" <wb6b@...> ha scritto:
Hi,

I was reading something on the history of astronomy and an amusing thought came to mind. 

If it weren't for early astronomers banging their heads against the wall trying to explain the complex cyclic paths of the planets orbiting around the earth we may have not been gifted some amazing math. This provided to foundation for developing fourier analysis and likely the calculus. (and a way to discover/prove the original assumption was wrong.)

And because of the birthing issues of the uBITX and so many people interested in finding ways to improve it, so many of us are vastly improving our working knowledge of various parts of RF, radios, software and electronics.

Tom, wb6b

Re: The sun orbiting the earth, spectrum analyzers and the uBITX

Timothy Fidler
 

My take on the Sun orbiting system (Ptolemaic) is ya gotta give the guy credit.  Based on this concept and some magic algorithms the ancients managed to predict , so they say,  eclipses, rising times of planets and all sorts of cosmic ephemera.  I suspect that they predictions would get well out of wack after a year or two as they must have been the equivalent of binomial expansions ... sort of vaguely linearising stuff to theories that were flawed. ...

.Now is the Ubitx the Ptolemaic system and the  xiegu 108g the  uBitx after a modern day Issac Newton has fooled with it.?. perhaps that is the question that will get me zip tied and run out of town :-) .. backwards on a hoss..

Timothy E. Fidler : Engineer BE Mech(1) Auckland , NDT specialist AINDT UT /RT3 , MT2 CB #2885, 
Telephone Whangarei   022  691 8405
e: Engstr@...



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Sent:
Mon, 4 Feb 2019 00:32:36 -0800
Subject:
Re: [BITX20] The sun orbiting the earth, spectrum analyzers and the uBITX


Ours may be more called 'Learning by Tinkering' :), which involves some but not that much thinking, luckily enough!


Il 03/feb/2019 22:18, "Tom, wb6b" <wb6b@...> ha scritto:
Hi,

I was reading something on the history of astronomy and an amusing thought came to mind. 

If it weren't for early astronomers banging their heads against the wall trying to explain the complex cyclic paths of the planets orbiting around the earth we may have not been gifted some amazing math. This provided to foundation for developing fourier analysis and likely the calculus. (and a way to discover/prove the original assumption was wrong.)

And because of the birthing issues of the uBITX and so many people interested in finding ways to improve it, so many of us are vastly improving our working knowledge of various parts of RF, radios, software and electronics.

Tom, wb6b

Re: The sun orbiting the earth, spectrum analyzers and the uBITX

Tom, wb6b
 

Yes, it is amazing how far they got with the wrong planetary system.

I guess what I'm saying is, the struggle our forefathers were having to work out the kinks in (for example) the planetary model of the time, led to amazing increases in knowledge as they worked things out.  

If the uBITX had been perfect from the start we might be happily talking away and our knowledge advanced to just where the knobs are and how to connect the antenna coax connector. But, because there are things about the uBITX that beg to be improved, we started working on solutions and are increasing our knowledge in the process; either by our own experiments or reading what the others on the group try and either succeed or not. 

So (within limits) working with things with imperfections or kinks can lead to an adventure of learning that something that goes really smoothly may not provide. Because of the happenstance of buying the uBITX with it's current kinks, I've been launched into learning more than if the uBITX had just been a hook up a microphone and talk situation. Certainly nowhere, anywhere near a Newton or Kepler, but I'm happy for the modest level learning the uBITX has brought about. 

Tom, wb6b

Re: The sun orbiting the earth, spectrum analyzers and the uBITX

iz oos
 

Absolutely, I am very happy with these solvable imperfections. At the beginning I thought it was like solving a partial differential solution without solution at all. I was wrong, the beauty of the uBitx resides in its multiple solutions.


Il 04/feb/2019 11:23, "Tom, wb6b" <wb6b@...> ha scritto:
Yes, it is amazing how far they got with the wrong planetary system.

I guess what I'm saying is, the struggle our forefathers were having to work out the kinks in (for example) the planetary model of the time, led to amazing increases in knowledge as they worked things out.  

If the uBITX had been perfect from the start we might be happily talking away and our knowledge advanced to just where the knobs are and how to connect the antenna coax connector. But, because there are things about the uBITX that beg to be improved, we started working on solutions and are increasing our knowledge in the process; either by our own experiments or reading what the others on the group try and either succeed or not. 

So (within limits) working with things with imperfections or kinks can lead to an adventure of learning that something that goes really smoothly may not provide. Because of the happenstance of buying the uBITX with it's current kinks, I've been launched into learning more than if the uBITX had just been a hook up a microphone and talk situation. Certainly nowhere, anywhere near a Newton or Kepler, but I'm happy for the modest level learning the uBITX has brought about. 

Tom, wb6b

Re: uBitX PTT cycling

Vic WA4THR
 

For mobile ops I had to add a filter to eliminate the alternator whine. I used an old Radio Shack filter that I had in a car for 2m FM decades ago, and just mounted it in the case running the 12v input through it ahead of the power switch. I had already installed a 12v regulator chip for the main board, bypassing it for the PA, just in case the car voltage excursions could be dangerous...I see as high as 14.1v sometimes when the engine is running. I also had already used an old Motorola speaker mic from my junkbox, and had a switch on the panel to change from the internal speaker to the speaker mic, and find that handy when mobile as I can hold the mic closer to my ear if the ambient noise is high. Other than that. no other mods. The only issue I noted on this trip was that my speaker, which was hot-glued to the plastic case, came loose. I suspect leaving the rig in the car with temps well below freezing, then warming up to the 50's, and traveling over some significant potholes may have weakened that bond, but I'll look at that further. On my return trip from Newport News, VA to my home in Eastern PA I I had a nice chat with a station in Erie, PA, who had solid copy on my 7w radio.

=Vic=

Re: uBITX default frequency

 

John,

Tune to whatever freq. you want and switch VFO from A to B. Now the
freq. A becomes default. Switch back to VFO A.

Raj

At 04-02-19, you wrote:
Hi Keith
I also have the ubitx ver 4 i would love mine to boot @ 1950 in topband
could you help me with this, is it difficult to do this,
when i switch on the rig it starts up in 40 mtrs ,
many thanks
John 2e0eii

Re: Spurs/Harmonics fixes for v4 based on v5 board design?

Dave Space
 

Thanks. Interesting.  I already replaced all relays with Axicom and L5 and L7.  What other mods might help this particular spur?


On Sun, Feb 3, 2019 at 08:49 PM, Raj vu2zap wrote:
Dave,

Spurs zero in every 2.5MHz. Some move at 3x others 5x the tune speed.
ex: .....15,17.5,20, 22.5 and so on Mhz.

Raj

Chenge of relays reduces them greatly along with other mods.

At 04-02-19, you wrote:
Hmm The numbers don't seem to add up for this spur.  When at 7.15MHZ it was at 5mhz when at 8.5 it was around 8MHZ spur.
Previously uploaded the pic of the inductors in previous post.

Two pics show two tone at 7.15MHZ and 8.5MHZ  Can see the spur moves from around 5 to around 8 MHZ.

Any ideas the cause and/or how to eliminate it?

Thanks.


toggle quoted message. . .

 
On Fri, Feb 1, 2019 at 10:14 PM, Raj vu2zap wrote:
What inductors did you use, please share a pic.

There is always a carrier leak at 12Mhz and 12-7 = ~5 Mhz could be what you see.

Most spurs are created by the harmonics of the carrier feeding back to the first BiDi amp. Changing to Axicom relays
eliminates a lot of these dancing dervishes.

Raj

https://en.wikipedia.org/wiki/Sufi_whirling

At 02-02-19, you wrote:
Thanks I'll try the two tone test next. Tonight I replaced L5 and L7 Raj's fix to see if I noticed any differences. Using LSB on 7.15 into 40db attenuator get-55db main signal and I see some sort of spur at around 5MHZ that is about -85db, doesn't fluctate with voice it's constant when I key the transmitter. Wonder what could be producing around 5 MHZ.

I wonder if the v5 board redesign changes next might help. Might see if I can figure out where on the board that could be introduced.

Re: PCBs Giveaway AGC & Noiseclick K5BCQ

Uwe , DF1UB
 

All Boards sent.
One pair left.

Re: PCBs Giveaway AGC & Noiseclick K5BCQ

Lawrence Galea
 

Uwe
please confirm paypal address because it seems that it has disappeared.
Thanks and regards
Lawrence


On Mon, Feb 4, 2019 at 2:35 PM Uwe , DF1UB <jento23@...> wrote:
All Boards sent.
One pair left.

Re: The sun orbiting the earth, spectrum analyzers and the uBITX

Joe Puma
 

Ahh Tom, I definitely felt this way when joining this group. I’ve learning so much from tinkering with the uBitx and this group, it’s effected how I now see things around me. It’s like someone turned the lights on. 

Thanks uBitx!! 

Joe
Kd2nfc 



On Feb 4, 2019, at 3:32 AM, iz oos <and2oosiz2@...> wrote:

Ours may be more called 'Learning by Tinkering' :), which involves some but not that much thinking, luckily enough!


Il 03/feb/2019 22:18, "Tom, wb6b" <wb6b@...> ha scritto:
Hi,

I was reading something on the history of astronomy and an amusing thought came to mind. 

If it weren't for early astronomers banging their heads against the wall trying to explain the complex cyclic paths of the planets orbiting around the earth we may have not been gifted some amazing math. This provided to foundation for developing fourier analysis and likely the calculus. (and a way to discover/prove the original assumption was wrong.)

And because of the birthing issues of the uBITX and so many people interested in finding ways to improve it, so many of us are vastly improving our working knowledge of various parts of RF, radios, software and electronics.

Tom, wb6b

Re: Is the order website - hfsignals.com still in use? #bitx40

Jonas Sanamon
 

I ordered on 29/12, have not heard anything from them since. Mailed them at 18/1 asking if it has been shipped. Still nothing.
Some potential for improvement :-)

/Jonas - SM4VEY

Den tors 31 jan. 2019 kl 06:40 skrev Vince Vielhaber <vev@...>:

They're still in business.  You'll get a notice soon.  Sometimes they
get backlogged.

Vince - K8ZW.



On 01/31/2019 12:30 AM, pauln@... wrote:
> I place an order 4 days ago and have only received a PayPal advice
> confirming my payment and that it has been processed.  I have not
> received any order confirmation, nor has a there been a response to my
> email to confirm my order, that was sent to teamhfsigs@...
> <mailto:teamhfsigs@...>
> So am wondering if they are still in business?
> Thank You
> Paul vk4apn
>

--
   K8ZW  http://www.metalworkingfun.com   http://www.hamradio.fun



Re: Is the order website - hfsignals.com still in use? #bitx40

Laurence Oberman
 

I have 3 of these
Never got notified for any on order other than paypal
They all arrived safely

On Mon, Feb 4, 2019 at 1:58 PM Jonas Sanamon <sanamon@...> wrote:

I ordered on 29/12, have not heard anything from them since. Mailed them at 18/1 asking if it has been shipped. Still nothing.
Some potential for improvement :-)

/Jonas - SM4VEY

Den tors 31 jan. 2019 kl 06:40 skrev Vince Vielhaber <vev@...>:

They're still in business. You'll get a notice soon. Sometimes they
get backlogged.

Vince - K8ZW.



On 01/31/2019 12:30 AM, pauln@... wrote:
I place an order 4 days ago and have only received a PayPal advice
confirming my payment and that it has been processed. I have not
received any order confirmation, nor has a there been a response to my
email to confirm my order, that was sent to teamhfsigs@...
<mailto:teamhfsigs@...>
So am wondering if they are still in business?
Thank You
Paul vk4apn
--
K8ZW http://www.metalworkingfun.com http://www.hamradio.fun


Re: Is the order website - hfsignals.com still in use? #bitx40

M0OOZ
 

This company sells a flat packed finished and tested board which it claims cannot be returned when you discover it does not work! I love the bitx idea. However, the denial of responsibility for supply of goods fit for purpose is unacceptable and is against PayPal policy. There are literally hundreds of boards delivered that do not work! 

I say this since it is my belief that the supplier should and must take responsibility for the trouble caused by supply of inadequate boards. 

On Thu, 31 Jan 2019, 06:30 <pauln@... wrote:
I place an order 4 days ago and have only received a PayPal advice confirming my payment and that it has been processed.  I have not received any order confirmation, nor has a there been a response to my email to confirm my order, that was sent to teamhfsigs@...
So am wondering if they are still in business?  
Thank You
Paul vk4apn

Re: Is the order website - hfsignals.com still in use? #bitx40

M0OOZ
 

On the same subject of responsibility, I say that a business that uses PayPal or almost any bank will discover their responsibilities toward serving upon obligations. It is unacceptable to supply a board which is sold as built and tested and subsequently deny all responsibility for failure. 

This is especially true when looking at the numbers of faults on boards delivered. 

Pactus sunt servandum!

International contract law!

This means agreements must be served. When, like me, you discover that there is a difficult to diagnose problem, on a board that has more than one fault, the 'tested and built' board that you trusted in, should be replaced by law! 

On Thu, 31 Jan 2019, 06:30 <pauln@... wrote:
I place an order 4 days ago and have only received a PayPal advice confirming my payment and that it has been processed.  I have not received any order confirmation, nor has a there been a response to my email to confirm my order, that was sent to teamhfsigs@...
So am wondering if they are still in business?  
Thank You
Paul vk4apn

Re: Is the order website - hfsignals.com still in use? #bitx40

Kevin Timm
 

@M0OOZ 


#1, create your own thread - don't hijack somebody elses
#2, dispute the charges with PP or your CC company

73,
Kevin
K5KDT

On Mon, Feb 4, 2019 at 1:59 PM M0OOZ <geoffcowne@...> wrote:
On the same subject of responsibility, I say that a business that uses PayPal or almost any bank will discover their responsibilities toward serving upon obligations. It is unacceptable to supply a board which is sold as built and tested and subsequently deny all responsibility for failure. 

This is especially true when looking at the numbers of faults on boards delivered. 

Pactus sunt servandum!

International contract law!

This means agreements must be served. When, like me, you discover that there is a difficult to diagnose problem, on a board that has more than one fault, the 'tested and built' board that you trusted in, should be replaced by law! 

On Thu, 31 Jan 2019, 06:30 <pauln@... wrote:
I place an order 4 days ago and have only received a PayPal advice confirming my payment and that it has been processed.  I have not received any order confirmation, nor has a there been a response to my email to confirm my order, that was sent to teamhfsigs@...
So am wondering if they are still in business?  
Thank You
Paul vk4apn

Re: Is the order website - hfsignals.com still in use? #bitx40

Laurence Oberman
 

Agree with Kevin but will say this

Hello Sir
Let me start with saying no intention to start a fight here at all:

All 3 of mine worked at the get go but these units are sold as kits to be built.
Because of the post delivery assembly performed by the buyer, the
supplier would be buried having to deal with returns due to user error
and you would be paying 3 x the amount.

This is why the price of these units is so affordable. There is
assistance available when boards do not work but they are sold as
experimenters boards.

You are not forced to purchase these units, and are free to buy a
Yaesu 817 etc. that has a manufacturers warranty.

I will argue the Paypal statement of yours as well. I buy lots off
ebay, where the statements are for many purchases "unit untested,
returns not accepted"
Most purchases on Ebay are paypal.

On Mon, Feb 4, 2019 at 2:59 PM M0OOZ <@M0OOZ> wrote:

On the same subject of responsibility, I say that a business that uses PayPal or almost any bank will discover their responsibilities toward serving upon obligations. It is unacceptable to supply a board which is sold as built and tested and subsequently deny all responsibility for failure.

This is especially true when looking at the numbers of faults on boards delivered.

Pactus sunt servandum!

International contract law!

This means agreements must be served. When, like me, you discover that there is a difficult to diagnose problem, on a board that has more than one fault, the 'tested and built' board that you trusted in, should be replaced by law!

On Thu, 31 Jan 2019, 06:30 <pauln@... wrote:

I place an order 4 days ago and have only received a PayPal advice confirming my payment and that it has been processed. I have not received any order confirmation, nor has a there been a response to my email to confirm my order, that was sent to teamhfsigs@...
So am wondering if they are still in business?
Thank You
Paul vk4apn

BitX40 CW failure

Vic WA4THR
 

I have had Allard Munter's v1.27 sketch (modified to add an S-meter and voltmeter) running for almost a year. It works fantastically. I utilize the CW keying capability to add a TUNE button by taking the grounded input (same as a straight key) to ground A1 in the Raduino, then take the output of D6 to take 5v through a 4.7K resistor  to C107 on the main chassis to unbalance the carrier, all per his modification instructions. That worked perfectly for quite a while, but now it doesn't! The D6 pin is still putting out 5v when I press TUNE, the path from there to the capacitor reads 4.7K, and when I press TUNE the rig generates a bit of sidetone, indicates it is now in CW mode, but does not go into transmit. Further, the voltage at C107 rises only to about 0.4 volts and the receiver stays on. Otherwise the rig is working great and I've continued to enjoy SSB contacts. Any idea what has happened here?

=Vic=

Re: BitX40 CW failure

Evan Hand
 

First thing to check is the frequency: if you are too close to the band edge in some cases the rig will act as you describe.  This is because there is a check in the base code to disable the Clock#2 (CW VFO) and not allow transmission if the signal could go out of band (it is not consistent across all bands, and not sure if it is international or US based bands).

Beyond that not sure that I can help, as I do not have the version of software that you are using.

73
Evan
AC9TU

Strange happenings!

barry halterman
 

Hopefully some could shed some light here.
I intended to put in a power meter in my ubitx, so I installed a FT37-43 toroidal core at the rf output
Connector (ran the center coax conductor though the core) with 3 turns for the secondary winding. One end of the winding was grounded the other end to a diode to a capacitor and 47 ohm resistor, in parallel, to ground. Upon key down in CW mode I measured around 3.4 volts which was about 11 watts out into my dummy load....So far so good!
This is where it gets interesting! With my SA the harmonics on all bands went from marginal to very poor. I pulled the toroidal core off the coax and the harmonics went back to marginal, where I started from. Why would a toroidal core at the output cause such a degrading of the harmonics?
Even the second harmonic was there with the toroidal core, and not with the core removed.
Puzzling, very puzzling!
Thanks
Barry
K3BO

Re: Is the order website - hfsignals.com still in use? #bitx40

Evan Hand
 

Guess I am throwing fuel on the fire, however I feel I do need to comment,:

1 - The thread is about the business practices of HF Signals, so as much as any other thread, I do believe that it could go here.  The original question is about not receiving an email on the material that was ordered.
2 - As to the warranty, How would this be handled if it was not a large supplier, rather just a few "kits" by another amateur based on open hardware/software?  I have not seen people going after auxiliary boards for this platform as an example.
3 - The only questionable thing in the business practices in my mind is the site advertisement: It does read as if there were minimal risks as an  assembled and tested device, which is what has lead many to believe there is responsibility on HF Signal's part for the board design (NOTE it IS listed as a KIT).  Need to remind all that it is OPEN SOURCE both hardware and software.  Ashhar does participate in the process, but relies on a host of others to provide the input.

My experience is that there has been quick response in delivering the purchased material, as long as you do follow the DHL recommendation for shipping.  Both of the boards that I purchased on two separate occasions have worked out of the box. However they both did have to be re calibrated  when I made changes for increased functionality.  And some hardware modes were required when I added more load on the 5volt supply (added a Nextion screen).  This has been a HUGE learning process that has been a POSITIVE experience for me.

Before it gets brought up, I will address the "harmonics and spurs" issues that I have comment on negatively in the past: I have since learned that in a lot of the international realm, the board as delivered, is fully compliant.  That is not the case for the USA, here it is marginal to out of spec.  So then it becomes a question only of so designating that on the web page, however this forum is listed as the one for support.  That issue has been all over this forum, with multiple possible solutions.

It boils down for me that the only change in business practice that I would like to see is the clear notification when placing the order that it is as is; all new parts, factory tested, assembly required, with no warranty issued or implied. (it may be there, as I did not check when ordering).

Above are my experiences/beliefs, yours can and may be different.

73
Evan
AC9TU