Date   

Re: RD16HHF1 power curve flattening...some

Bob Lunsford
 

Half of the big secret for successful QRP is in the antenna. Optimally, it should be a full-size antenna at a respectable height. I used a full size (102-ft) G5RV. Talked to others on 3916KHz one evening and they were surprised. Gave them the HF Signals web address and several said they wanted one.

The other half is a good/decent receiver on the other end. My V6 has such a receiver and when turning it on, I often have to turn it to full volume to make sure the V6 is working. I had a V4 before and the receiver in the V3 is the same: Signals jump out of the speaker as if from an empty room. On the net on 3916 at 7PM EST I often hear stations with no problem that others have to have relayed to them. Propagation can be a factor, however.

A good receiver with a good antenna and you have it about as good as it gets. Sometimes I wish for a bit more power but then it would not be QRPp... Ha

Bob — KK5R

On Tuesday, August 4, 2020, 10:20:52 AM EDT, _Dave_ AD0B <davesters@...> wrote:


Reminds me of a conversation I had with one operator from Green Bay on 40. I was on a v3 uBITX .
He says "are you running Power or just 100"
I respond "Ahh 10." 
silence............

About the rd16hhf. I have another v3 unit that had blown finals. I put a set of them in it as I had been reading about them and had ordered a pair previously. So just soldered them in (insulating and crossing over the two leads), adjusted the bias and noticed more power on the upper bands. I didn't do any other mods.

Have made a lot of contacts on 15 meters on my v3 with standard finals. Puts out 3 watts. Never have made any contacts on 10 although have tried.

On Mon, Aug 3, 2020 at 05:07 PM, Bob Lunsford wrote:
 
I remember when QRP was 100W or less and 5W or less was identified as QRPp, (the last 'P' being a subscript 'p') and slowly this seems to have been replaced with what it is today. Guess all those Kilowatt operators back then considered anyone running 100W or less as QRP. Ha
 
On Monday, August 3, 2020, 8:11:15 AM EDT, Bill Cromwell <wrcromwell@...> wrote:
 
 
Not so many years ago "QRP" was 100 watts or less. Some if still similar
views.

73,

Bill  KU8H

bark less - wag more

On 8/2/20 6:31 PM, 42irongazelle@... wrote:
---snip------

  I expect that QRP units in a fifty years will be 100 Watts, so
> nobody should be afraid of exceeding 10 Watts by concreted in notions
> about QRP power levels.  Where is it written that this transceiver has
> to be a QRP only radio?
> """"""""""""""""




 
--
73
Dave
ADOB
Raduino bracket and Ham_Made_Keys


Re: Adding a Nextion Display to the F40 (uBitx adjacent) #arduino #nextion

Dale Parfitt
 

Hi Jack,

I had a similar problem when I designed  a Drake 7 line look alike enclosure that allowed for a RX only antenna switch and forthcoming 6M transverter for  my TR-7. I used original Drake  7 line pushbuttons and they are stiff. I eventually added a piece of 3/8” steel plate inside  the enclosure and it just barely solved the issue!

Dale W4OP

 

From: BITX20@groups.io [mailto:BITX20@groups.io] On Behalf Of Jack, W8TEE via groups.io
Sent: Tuesday, August 4, 2020 9:46 AM
To: BITX20@groups.io
Subject: Re: [BITX20] Adding a Nextion Display to the F40 (uBitx adjacent) #arduino #nextion

 

Dean:

 

I did work on the JackAl using a 5" touch screen and it works well, but used a Teensy 3.6 for the processor. The display I'm using now is a 2.8" TFT display (see:QCX CAT Demo) which supports a touch screen, and I just got

 

 


QCX CAT Demo

in a boatload of 3.5" touch screen displays that I may implement that later on. One of the problems I had was that the BITX family and the QCX don't have enough mass to making using a touch screen possible without holding the case with the other hand, even with rubber feet on it. Has that been a problem for you? If not, how did you fix it? I think making a sloping faceplate might work.

 

Jack, W8TEE

 

 

 

On Monday, August 3, 2020, 9:57:31 PM EDT, Dean Souleles <dsouleles@...> wrote:

 

 

Hi folks - 

N6QW, Pete Juliano has a way of inspiring (tricking) you to work on homebrew radio projects.  He asked me a simple question about programming a Nextion display and two days later I emerged from my cave with a fully functioning SSB radio control sketch for my N6QW inspired Furlough 40 SSB Phone QRP transceiver.  This should be easy to integrate with a variety of homebrew rigs - and since it is an Arduino, SI5351 and Nextion it could conceivably turn in to a uBitx alternative - but not any time soon - a lot of functions to add and too many other good alternatives.  Unlike KD8CEC and others I chose to use the Nextion library which streamlined the programming consiiderbly.  The sketch and libraries will be uploaded to github in the next couple of weeks  and the whole process will be documented at KK4DAS.blogspot.com

But for now please see the video demonstration and the new blog post  - "A touching display for f40 and iss aprs" which also has a couple of photographs of comet Neowise as a bonus.

Love to hear what you think.

73,
Dean
KK4DAS


--
Jack, W8TEE


Re: RD16HHF1 power curve flattening...some

_Dave_ AD0B
 

Reminds me of a conversation I had with one operator from Green Bay on 40. I was on a v3 uBITX .
He says "are you running Power or just 100"
I respond "Ahh 10." 
silence............

About the rd16hhf. I have another v3 unit that had blown finals. I put a set of them in it as I had been reading about them and had ordered a pair previously. So just soldered them in (insulating and crossing over the two leads), adjusted the bias and noticed more power on the upper bands. I didn't do any other mods.

Have made a lot of contacts on 15 meters on my v3 with standard finals. Puts out 3 watts. Never have made any contacts on 10 although have tried.


On Mon, Aug 3, 2020 at 05:07 PM, Bob Lunsford wrote:
 
I remember when QRP was 100W or less and 5W or less was identified as QRPp, (the last 'P' being a subscript 'p') and slowly this seems to have been replaced with what it is today. Guess all those Kilowatt operators back then considered anyone running 100W or less as QRP. Ha
 
On Monday, August 3, 2020, 8:11:15 AM EDT, Bill Cromwell <wrcromwell@...> wrote:
 
 
Not so many years ago "QRP" was 100 watts or less. Some if still similar
views.

73,

Bill  KU8H

bark less - wag more

On 8/2/20 6:31 PM, 42irongazelle@... wrote:
---snip------

  I expect that QRP units in a fifty years will be 100 Watts, so
> nobody should be afraid of exceeding 10 Watts by concreted in notions
> about QRP power levels.  Where is it written that this transceiver has
> to be a QRP only radio?
> """"""""""""""""




 


Re: BITX V6 CW PROBLEM REG

LAKSH MUTHU
 

Dear All,
   Good day. Can any one kindly guide me to get and install Reed's CW software for UBITX V6 ?
I am totally new to this type of getting software and installing  a step by step procedure will be highly appreciated. Or else atleast a link details in this regard will be much helpful.
    Expecting guidance from the group and thanks in advance.
With regards and 73
MUTHU
VU2LMN


Re: Adding a Nextion Display to the F40 (uBitx adjacent) #arduino #nextion

Jack, W8TEE
 

Dean:

I did work on the JackAl using a 5" touch screen and it works well, but used a Teensy 3.6 for the processor. The display I'm using now is a 2.8" TFT display (see:QCX CAT Demo) which supports a touch screen, and I just got

in a boatload of 3.5" touch screen displays that I may implement that later on. One of the problems I had was that the BITX family and the QCX don't have enough mass to making using a touch screen possible without holding the case with the other hand, even with rubber feet on it. Has that been a problem for you? If not, how did you fix it? I think making a sloping faceplate might work.

Jack, W8TEE



On Monday, August 3, 2020, 9:57:31 PM EDT, Dean Souleles <dsouleles@...> wrote:


Hi folks - 

N6QW, Pete Juliano has a way of inspiring (tricking) you to work on homebrew radio projects.  He asked me a simple question about programming a Nextion display and two days later I emerged from my cave with a fully functioning SSB radio control sketch for my N6QW inspired Furlough 40 SSB Phone QRP transceiver.  This should be easy to integrate with a variety of homebrew rigs - and since it is an Arduino, SI5351 and Nextion it could conceivably turn in to a uBitx alternative - but not any time soon - a lot of functions to add and too many other good alternatives.  Unlike KD8CEC and others I chose to use the Nextion library which streamlined the programming consiiderbly.  The sketch and libraries will be uploaded to github in the next couple of weeks  and the whole process will be documented at KK4DAS.blogspot.com

But for now please see the video demonstration and the new blog post  - "A touching display for f40 and iss aprs" which also has a couple of photographs of comet Neowise as a bonus.

Love to hear what you think.

73,
Dean
KK4DAS


--
Jack, W8TEE


Re: #ubitxv6 #firmware #ubitxv6 #firmware

W2CTX
 

Evan

  No problem and thank you for clarifying. 
  Yes the original NANO code did have slow display updating.

  I am always open for comments so I can address them.

rOn

On Tuesday, August 4, 2020, 9:25:36 AM EDT, Evan Hand <elhandjr@...> wrote:


Ron,
I may have spoken out of turn, that being that I do not have a v6, nor your Teensy adapter to verify that statement.  I apologize if I have caused an issue.

The basis for my statement is that the original software from HF Signals (Ashhar Farhan) had some update speed issues that others improved through different coding of the display and other functions as I understand it.  My assumption is that with the higher speed of the Teensy processor that would not be needed.  There is also a larger amount of memory available so that code optimization for size would not be needed.  All of these come from the advantages of the Teensy.

In no way am I saying that there is a shortcoming with your hardware/software approach.  I was trying to make the point that putting your software on a lessor processor would not give the same results.

Again, I do not see any shortcomings or need to modify your code, as I do not have a v6 to use it.

With deepest apologies,
73
Evan
AC9TU


Re: #ubitxv6 #firmware #ubitxv6 #firmware

Evan Hand
 

Ron,
I may have spoken out of turn, that being that I do not have a v6, nor your Teensy adapter to verify that statement.  I apologize if I have caused an issue.

The basis for my statement is that the original software from HF Signals (Ashhar Farhan) had some update speed issues that others improved through different coding of the display and other functions as I understand it.  My assumption is that with the higher speed of the Teensy processor that would not be needed.  There is also a larger amount of memory available so that code optimization for size would not be needed.  All of these come from the advantages of the Teensy.

In no way am I saying that there is a shortcoming with your hardware/software approach.  I was trying to make the point that putting your software on a lessor processor would not give the same results.

Again, I do not see any shortcomings or need to modify your code, as I do not have a v6 to use it.

With deepest apologies,
73
Evan
AC9TU


Re: BITX V6 CW PROBLEM REG

Bill Cromwell
 

Hi Jeff,

It has been on here several times and once again for this thread that the factory software causes this problem. The software from Reed eliminates the problem. It fixed a couple of other things into the deal.

73,

Bill KU8H

bark less - wag more

On 8/4/20 6:02 AM, Jeff Debes wrote:
Muthu,
Did anyone answer your comment /question?
I know there are prior discussions / fixes  on this issue, but I was not paying close  attention because my interest is in SSB.
Still, I think that this CW ( false initiation) is deficiency in design that should be fixed in the kit as it is shipped. The basic kit should work acceptably /basically without necessary modification  in both CW and SSB modes after proper assembly and alignment.
Jeff
AC2JB


Re: What Happened To Versions 3, 4 and 5

Gerry Kavanagh
 

Why would I junk my v3? It's been heavily modified to improve audio output, TX signal quality and level power output. Added AGC and i2c bus. Currently adding a second Nano for SWR/Power out and a mic compressor.
No need to buy a v6 when the v3 has so much scope for hacking.
/ Gerry


Re: #ubitxv6 #firmware #ubitxv6 #firmware

W2CTX
 

I a member of team TSW and Evan is correct in that you buy a Teensy T4 and
plug it into the T4 adapter board which is then plugged into the same socket
that the NANO would go.

Yes the pinouts are different for the paddle inputs so we could eliminate a poorly
designed voltage divider circuit..  There are 3 wires of the adapter board which
allows paddle CW to be generated by interrupt control.

Evan please expand on your statement about speed making a difference that
could make options slow or not reliable as I would like to fix this.

rOn

On Tuesday, August 4, 2020, 12:27:22 AM EDT, Evan Hand <elhandjr@...> wrote:


The software as provided by TSW would only work on the Teensy hardware that they sell.  There are pinouts and other hardware differences that would have to be modified, as well as the speed difference that could make any cool options too slow or not reliable.

73
Evan
AC9TU


Re: BITX V6 CW PROBLEM REG

Jeff Debes
 

Muthu,

Did anyone answer your comment /question?
I know there are prior discussions / fixes  on this issue, but I was not paying close  attention because my interest is in SSB. 
Still, I think that this CW ( false initiation) is deficiency in design that should be fixed in the kit as it is shipped. The basic kit should work acceptably /basically without necessary modification  in both CW and SSB modes after proper assembly and alignment.

Jeff
AC2JB 





On Aug 3, 2020, at 11:02 AM, LAKSH MUTHU <vu2lmn@...> wrote:


HI,
GOOD DAY TO ALL.
I am using BITX V 6.1. In it , in the  CW mode, the first character is not transmitted fully and hence the CW sending is not proper. I understand this issue is in the software which will be discussed in this group and solved.I like to know whether any solution has been arrived. In as much as the output  power   from UBITX V6.1 in SSB is very low and hence contacts cannot be established and at the same time due to the CW problem, CW contacts can also not be had properly. Therefore, this rig cannot be used more effectively.
   An early solution to the CW issue will be very highly appreciated.
With regards and 73
MUTHU
VU2LMN

--
jeff.debes@...


Re: Ubitx V6 transmitting carrier.

Owen Vinall
 

Thanks Ulrich for the quick reply.

I hope I have your name right. That's great news for me.
I did move the receiver to a location appropriately 15 ~ metres away and had the same issue. But hopefully its the same issue.
Now I can  improve my antenna to start doing further testing. At least I have plenty of room here.
We visited Germany last year during a holiday and enjoyed it.

In case you get this twice my apologies. Having weird issues with my Email. It ended up in Draft for some reason.

Regards  Owen

On Tue, 4 Aug 2020, 5:13 am DC3AX via groups.io, <ulrich.prinz=googlemail.com@groups.io> wrote:
Hi Owen,

that is completely normal! There are quite a few unshielded traces on the PCBs of the UBITX and if your R1000 doesn't pick that up, I would consider the R1000 defective. Remember, the receiver should catch things down in the few µV  that has been sent by a transmitter across the sea with only a few watts. So it should catch up on all parasitics that are emitted in the same room :)

73 de Ulrich DC3AX


Re: BITX V6.1 TRANSMIT RECIEVE RELAY SWITCH NOT WORKING IN LSB USB

LAKSH MUTHU
 

Dear Evan and all,
     Good day. I checked the PTT connection in the Mic  by checking for continuity between the ring and sleeve of the TRS plug. When PTT is pressed, there is continuity(of course between ring and sleeve of TRS plug) and when PTT is released no continuity. Also I checked and confirmed that there is proper connection between the earth point of mic socket and the chassis earth.But the problem persists. I don't know how to find out the fault,
    Valuable guidance will be highly appreciated.
  With regards and 73
               MUTHU
              VU2LMN


Re: RD16HHF1 power curve flattening...some

Ashhar Farhan
 

when you crawl past the 20 watt output, be a little careful. the RF currents have a way of creeping back. So, instead of cranking up more juice from this board, consider an out-board power amplifier. 
while you are at i, try the MRF300 running at 50v. A cheap 3 dollar switching booster will do that from 12v supply. this will give you 150 watts output for less than 50 dollars. linear amplifiers are simple circuits, electrically no different from an IF amplifier. but they literally give far more bang for the buck (er, boost).
- f

On Tue, Aug 4, 2020 at 12:29 PM MadRadioModder <madradiomodder@...> wrote:

“Have you summarized your mods here?”   No.  I contributed to the original thread.  I’ve moved on from that and designed my own radio.

 

 

From: BITX20@groups.io [mailto:BITX20@groups.io] On Behalf Of Slurm
Sent: Monday, August 3, 2020 8:39 PM
To: BITX20@groups.io
Subject: Re: [BITX20] RD16HHF1 power curve flattening...some

 

I agree on the radio and Farhan has kept it cheap enough for lots of people as evidenced by its sales.  That's no small feat.  I also see that the community has been vital to sustain the progress , it's pretty cool as I've seen from posts where people have really applied themselves to make the radio better. 

Allison also says that the transistors needed to operate at microwave frequencies, like the MMICs you mention.  

Have you summarized your mods here?

Thanks Much
Slurm 


Virus-free. www.avg.com

--

…_. _._


Re: RD16HHF1 power curve flattening...some

MadRadioModder
 

“Have you summarized your mods here?”   No.  I contributed to the original thread.  I’ve moved on from that and designed my own radio.

 

 

From: BITX20@groups.io [mailto:BITX20@groups.io] On Behalf Of Slurm
Sent: Monday, August 3, 2020 8:39 PM
To: BITX20@groups.io
Subject: Re: [BITX20] RD16HHF1 power curve flattening...some

 

I agree on the radio and Farhan has kept it cheap enough for lots of people as evidenced by its sales.  That's no small feat.  I also see that the community has been vital to sustain the progress , it's pretty cool as I've seen from posts where people have really applied themselves to make the radio better. 

Allison also says that the transistors needed to operate at microwave frequencies, like the MMICs you mention.  

Have you summarized your mods here?

Thanks Much
Slurm 


Virus-free. www.avg.com

--

…_. _._


Re: #ubitxv6 #firmware #ubitxv6 #firmware

Evan Hand
 

The software as provided by TSW would only work on the Teensy hardware that they sell.  There are pinouts and other hardware differences that would have to be modified, as well as the speed difference that could make any cool options too slow or not reliable.

73
Evan
AC9TU


Re: Killed TX this time...

Evan Hand
 

Tom,
To answer your question on CW, Maybe.  I have run some tests with a constant 1000Hz tone fed into the mic input and gotten higher power levels than pressing the CW key.  The reason that I would ask someone to test using CW would be to divide the rig diagnostics for the transmitter into two regions.  The first half is used only by the SSB transmission, the second half by both.  What I am doing then is determining if there is an issue with the pre-driver, drivers, and PA sections of the linear amp.

If you look at the last 7 messages prior to yours, you should find some of the information that you are requesting.  Please remember that the people providing this information are not paid, nor part of the HF Signals staff.  They are all fellow owners of a uBITX that is offering help on their own time.

I hope the prior messages do help.  If not, please post a question with as much information as you can provide.  For us to help we need to know the model, version, and any modifications, as well as a description of the symptoms.  It is also helpful to know what test equipment you have access too, as that can reduce the back and forth with the questions of "Can you measure the waveform at TP2?."  If you do not have an oscilloscope, this is a question that you cannot answer.

You could start the effort to compile the information that you believe is needed and then share it on this site.  There is a file section on this site, as well as ubitx.net which is another resource for people with questions.

One of the reasons that the Rig is sold at the current low price is that there is not a support staff for this type of work.  It relies on us volunteers to help resolve issues.

Personal opinions, not at all related to anything from the group, nor from HF Signals.
73
Evan
AC9TU


Re: Killed TX this time...

 

Tom,

Gently move the interstage transformer toroids and you may find a jump in power.
I have see some test boards with me that had shorts near the soldered ends.
Separating the leads solved the problem.

Raj

At 04/08/2020, you wrote:
This “low power� problem is stumping me.

Should CW not transmit max output? (Or is there a setting that brings that down)

I know that there have been scope photos taken from Some of the test points. Could someone provide a complete set for all the test points? (Complete with test parameters)

It seems that it would help to have a baseline that everyone could work from.

My issue is that everything seems to work but is on the low side. Thus there is gain on all stages, just don’t know how much. (I guess the masochistic method would be to reverse engineer the whole thing and then test to that.) Hoping someone can provide some meaty data?

Thanks

Tom


Re: Killed TX this time...

Tom.VA7TQB
 

This “low power” problem is stumping me.

Should CW not transmit max output? (Or is there a setting that brings that down)

I know that there have been scope photos taken from Some of the test points. Could someone provide a complete set for all the test points? (Complete with test parameters)

It seems that it would help to have a baseline that everyone could work from.

My issue is that everything seems to work but is on the low side. Thus there is gain on all stages, just don’t know how much. (I guess the masochistic method would be to reverse engineer the whole thing and then test to that.) Hoping someone can provide some meaty data?

Thanks

Tom


Re: #ubitxv6 #firmware #ubitxv6 #firmware

Ian Offer <icoffer@...>
 

Reed,
Well I am not sure if it is an option.
I can't figure out if the TSW software runs on the stock ubitxV6 hardware, or if I need to use some of their H/W.

Ian.