Topics

New Warning on uBITx.net

Mike Woods
 

I felt that I had no choice but to post a warning for potential uBITx purchasers and existing constructors that there were serious issues with emissions purity.  The following warning now appears on the first (permanently fixed) post:

WARNING:  Issues have been identified recently with the emissions purity of the µBITx.  It is recommended that you study recent posts on this website and avoid operations that could breach emissions requirements.

A reminder that uBITx.net has no association with HF Signals.  It is purely an information site.

I am sorry that the situation has resulted in requiring such a warning.   I have also updated the strengths and weaknesses page with a similar message.

73 Mike ZL1AXG ubitx.net

--
Mike Woods
mhwoods@...

m5fra2@...
 

Bit OTT considering a fix was sorted within a couple of days.

 

 

From: BITX20@groups.io <BITX20@groups.io> On Behalf Of Mike Woods
Sent: 08 August 2018 09:37
To: BITX20@groups.io
Subject: [BITX20] New Warning on uBITx.net

 

I felt that I had no choice but to post a warning for potential uBITx purchasers and existing constructors that there were serious issues with emissions purity.  The following warning now appears on the first (permanently fixed) post:

Image removed by sender.

WARNING:  Issues have been identified recently with the emissions purity of the µBITx.  It is recommended that you study recent posts on this website and avoid operations that could breach emissions requirements.

A reminder that uBITx.net has no association with HF Signals.  It is purely an information site.

I am sorry that the situation has resulted in requiring such a warning.   I have also updated the strengths and weaknesses page with a similar message.

73 Mike ZL1AXG ubitx.net

--
Mike Woods
mhwoods@...

Timothy Fidler
 

Boll_ks. there is no fix . there is a maybe fix in the  works. Some people who use or try to  this kit are professional radio men on ships and the like and they don't want their professional blotter compromised by a prosecution from the SMA / FCC and the like .. or even an investigation.  Your statement lacks any level of basic thought IMHO.

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



----- Original Message -----
From:
BITX20@groups.io

To:
<BITX20@groups.io>
Cc:

Sent:
Wed, 8 Aug 2018 09:53:37 +0100
Subject:
Re: [BITX20] New Warning on uBITx.net


Bit OTT considering a fix was sorted within a couple of days.

 

 

From: BITX20@groups.io <BITX20@groups.io> On Behalf Of Mike Woods
Sent: 08 August 2018 09:37
To: BITX20@groups.io
Subject: [BITX20] New Warning on uBITx.net

 

I felt that I had no choice but to post a warning for potential uBITx purchasers and existing constructors that there were serious issues with emissions purity.  The following warning now appears on the first (permanently fixed) post:

WARNING:  Issues have been identified recently with the emissions purity of the µBITx.  It is recommended that you study recent posts on this website and avoid operations that could breach emissions requirements.

A reminder that uBITx.net has no association with HF Signals.  It is purely an information site.

I am sorry that the situation has resulted in requiring such a warning.   I have also updated the strengths and weaknesses page with a similar message.

73 Mike ZL1AXG ubitx.net

--
Mike Woods
mhwoods@...

iz oos
 

If the power amplifier has its lowpass filters will they still find outside or within the low?


Il 08/ago/2018 11:02, "Timothy Fidler" <engstr@...> ha scritto:
The note should also cover the uBitx40 because it is marginal as to emissions and many people will add a power amp and find  themselves outside the law. There are other issues with this unit using some components at the limit of the component design capacity and therefore some units will fail early with zero local warranty/repair  service.   

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



----- Original Message -----

To:
<BITX20@groups.io>
Cc:

Sent:
Wed, 8 Aug 2018 20:37:22 +1200
Subject:
[BITX20] New Warning on uBITx.net


I felt that I had no choice but to post a warning for potential uBITx purchasers and existing constructors that there were serious issues with emissions purity.  The following warning now appears on the first (permanently fixed) post:

WARNING:  Issues have been identified recently with the emissions purity of the µBITx.  It is recommended that you study recent posts on this website and avoid operations that could breach emissions requirements.

A reminder that uBITx.net has no association with HF Signals.  It is purely an information site.

I am sorry that the situation has resulted in requiring such a warning.   I have also updated the strengths and weaknesses page with a similar message.

73 Mike ZL1AXG ubitx.net

--
Mike Woods
mhwoods@...

m5fra2@...
 

As a retired ‘professional radio man’, not on ships, I do not think that those people who have worked on the LPF and improved the performance are liars. The fix is to use external LPFs  for now. That is at a basic level of thought of course.

 

 

 

From: BITX20@groups.io <BITX20@groups.io> On Behalf Of Timothy Fidler
Sent: 08 August 2018 10:05
To: BITX20@groups.io
Subject: Re: [BITX20] New Warning on uBITx.net

 

Boll_ks. there is no fix . there is a maybe fix in the  works. Some people who use or try to  this kit are professional radio men on ships and the like and they don't want their professional blotter compromised by a prosecution from the SMA / FCC and the like .. or even an investigation.  Your statement lacks any level of basic thought IMHO.

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

 


----- Original Message -----

 

To:

<BITX20@groups.io>

Cc:

 

Sent:

Wed, 8 Aug 2018 09:53:37 +0100

Subject:

Re: [BITX20] New Warning on uBITx.net

Bit OTT considering a fix was sorted within a couple of days.

 

 

From: BITX20@groups.io <BITX20@groups.io> On Behalf Of Mike Woods
Sent: 08 August 2018 09:37
To: BITX20@groups.io
Subject: [BITX20] New Warning on uBITx.net

 

I felt that I had no choice but to post a warning for potential uBITx purchasers and existing constructors that there were serious issues with emissions purity.  The following warning now appears on the first (permanently fixed) post:

WARNING:  Issues have been identified recently with the emissions purity of the µBITx.  It is recommended that you study recent posts on this website and avoid operations that could breach emissions requirements.

A reminder that uBITx.net has no association with HF Signals.  It is purely an information site.

I am sorry that the situation has resulted in requiring such a warning.   I have also updated the strengths and weaknesses page with a similar message.

73 Mike ZL1AXG ubitx.net

--
Mike Woods
mhwoods@...

Gordon Gibby <ggibby@...>
 

I deplore the ad hominem attacks.  


On Aug 8, 2018, at 05:39, Timothy Fidler <engstr@...> wrote:

so those LPFs wll be sent out free of charge to all those who bought units up until now  and fitted complete with an installed by others  software upgrade for all persons who bought a Bit x and even those who bought them second hand in the meantime. And  At no cost ,not even the cost of getting it back to a non existent US or Ozzie service centre. ??


 If I bought a S+W revolver in the US and used standard S and W  ammo and the cylinder blew out I would expect a new one or a refund. It is called "fitness for purpose" and is often used in the courts.  Cf.  the reasonably recent VW emissions fraud business.

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



----- Original Message -----

To:
<BITX20@groups.io>
Cc:

Sent:
Wed, 8 Aug 2018 10:21:49 +0100
Subject:
Re: [BITX20] New Warning on uBITx.net


As a retired ‘professional radio man’, not on ships, I do not think that those people who have worked on the LPF and improved the performance are liars. The fix is to use external LPFs  for now. That is at a basic level of thought of course.

 

 

 

From: BITX20@groups.io <BITX20@groups.io> On Behalf Of Timothy Fidler
Sent: 08 August 2018 10:05
To: BITX20@groups.io
Subject: Re: [BITX20] New Warning on uBITx.net

 

Boll_ks. there is no fix . there is a maybe fix in the  works. Some people who use or try to  this kit are professional radio men on ships and the like and they don't want their professional blotter compromised by a prosecution from the SMA / FCC and the like .. or even an investigation.  Your statement lacks any level of basic thought IMHO.

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

 


----- Original Message -----

 

To:

<BITX20@groups.io>

Cc:

 

Sent:

Wed, 8 Aug 2018 09:53:37 +0100

Subject:

Re: [BITX20] New Warning on uBITx.net

Bit OTT considering a fix was sorted within a couple of days.

 

 

From: BITX20@groups.io <BITX20@groups.io> On Behalf Of Mike Woods
Sent: 08 August 2018 09:37
To: BITX20@groups.io
Subject: [BITX20] New Warning on uBITx.net

 

I felt that I had no choice but to post a warning for potential uBITx purchasers and existing constructors that there were serious issues with emissions purity.  The following warning now appears on the first (permanently fixed) post:

WARNING:  Issues have been identified recently with the emissions purity of the µBITx.  It is recommended that you study recent posts on this website and avoid operations that could breach emissions requirements.

A reminder that uBITx.net has no association with HF Signals.  It is purely an information site.

I am sorry that the situation has resulted in requiring such a warning.   I have also updated the strengths and weaknesses page with a similar message.

73 Mike ZL1AXG ubitx.net

--
Mike Woods
mhwoods@...

Scott McDonald
 

A basic thought could be that a professional radio man would read the statements on Farhan’s website that this is a kit, offered AS IS, not warrantied to any specification, and would not take it on board, eh?

The radio and the open collaboration of the people on this reflector to teach others and make it better has been to me one of the most amazing and positive amateur radio experiences I’ve had.  

Cheers, Scott KA9P

Make something good happen!

On Aug 8, 2018, at 4:05 AM, Timothy Fidler <engstr@...> wrote:

Boll_ks. there is no fix . there is a maybe fix in the  works. Some people who use or try to  this kit are professional radio men on ships and the like and they don't want their professional blotter compromised by a prosecution from the SMA / FCC and the like .. or even an investigation.  Your statement lacks any level of basic thought IMHO.

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



----- Original Message -----

To:
<BITX20@groups.io>
Cc:

Sent:
Wed, 8 Aug 2018 09:53:37 +0100
Subject:
Re: [BITX20] New Warning on uBITx.net


Bit OTT considering a fix was sorted within a couple of days.

 

 

From: BITX20@groups.io <BITX20@groups.io> On Behalf Of Mike Woods
Sent: 08 August 2018 09:37
To: BITX20@groups.io
Subject: [BITX20] New Warning on uBITx.net

 

I felt that I had no choice but to post a warning for potential uBITx purchasers and existing constructors that there were serious issues with emissions purity.  The following warning now appears on the first (permanently fixed) post:

WARNING:  Issues have been identified recently with the emissions purity of the µBITx.  It is recommended that you study recent posts on this website and avoid operations that could breach emissions requirements.

A reminder that uBITx.net has no association with HF Signals.  It is purely an information site.

I am sorry that the situation has resulted in requiring such a warning.   I have also updated the strengths and weaknesses page with a similar message.

73 Mike ZL1AXG ubitx.net

--
Mike Woods
mhwoods@...

hirosmb <hirosmb@...>
 

Yes, Scott.

// hiro, JJ1FXF



2018/08/08 20:32、Scott McDonald via Groups.Io <ka9p@...>のメール:

A basic thought could be that a professional radio man would read the statements on Farhan’s website that this is a kit, offered AS IS, not warrantied to any specification, and would not take it on board, eh?

The radio and the open collaboration of the people on this reflector to teach others and make it better has been to me one of the most amazing and positive amateur radio experiences I’ve had.  

Cheers, Scott KA9P

Make something good happen!

On Aug 8, 2018, at 4:05 AM, Timothy Fidler <engstr@...> wrote:

Boll_ks. there is no fix . there is a maybe fix in the  works. Some people who use or try to  this kit are professional radio men on ships and the like and they don't want their professional blotter compromised by a prosecution from the SMA / FCC and the like .. or even an investigation.  Your statement lacks any level of basic thought IMHO.

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



----- Original Message -----

To:
<BITX20@groups.io>
Cc:

Sent:
Wed, 8 Aug 2018 09:53:37 +0100
Subject:
Re: [BITX20] New Warning on uBITx.net


Bit OTT considering a fix was sorted within a couple of days.

 

 

From: BITX20@groups.io <BITX20@groups.io> On Behalf Of Mike Woods
Sent: 08 August 2018 09:37
To: BITX20@groups.io
Subject: [BITX20] New Warning on uBITx.net

 

I felt that I had no choice but to post a warning for potential uBITx purchasers and existing constructors that there were serious issues with emissions purity.  The following warning now appears on the first (permanently fixed) post:

WARNING:  Issues have been identified recently with the emissions purity of the µBITx.  It is recommended that you study recent posts on this website and avoid operations that could breach emissions requirements.

A reminder that uBITx.net has no association with HF Signals.  It is purely an information site.

I am sorry that the situation has resulted in requiring such a warning.   I have also updated the strengths and weaknesses page with a similar message.

73 Mike ZL1AXG ubitx.net

--
Mike Woods
mhwoods@...

n3ode@...
 

As a tech class amateur I cannot justify a full featured radio with the limited bandwidth available to me.  I want to upgrade to general class which will open all bands and a dramatic amount of bandwidth. 

This unit has allowed me to dip my toe into HF and learn a bit more of the theory which I lacked working UHF and VHF FM for 25 years.  I am hooked on QRP operation and will learn much more using this radio in low power for discovery of good antenna systems. 

Simple is beautiful and a unit with one button, one knob, and a tuner is quite pretty to me. 

John N3ODE
 

Gordon Gibby <ggibby@...>
 

Hi,  good point.   My basic concern for the GROUP is that grandstanding, cutting, demeaning, or even nasty statements about other people have no place.   You'll drive people like me (and likely many others) away.   


The goal is to help people, and to share knowledge.   People are going to make mistakes --- and you may have to gently explain their mistake to them, and even more than once!   But even so, being kind and gracious when explaining their boo-boo  is the mark of a true giant.  (Ah, there have been MANY times that I've fallen short!)


It is a two-way street on the harmonics problems....I would not have expected that the little kit had these problems....but I was keenly aware that it was built inexpensively -- but by a genius I felt --- whose web site plainly states:  (on one of its pages) 


"The HF Signals kits are supplied as-is without any promise that they will work to any particular specification. That said, thousands of BITX transceivers supplied by HF Signals work across the world. There is an active and very informative forum for learning and getting help that is entirely driven by the builder community. Join us on https://groups.io/g/bitx20   "


So for people like me who have several of these, now I'm aware of the issues and it isn't that hard for me to cut a trace and add a cable and plug in the filter output that I wish, or add relays or whatever --- that's the spirit of KIT HOOD!!     For people who don't have those skills (yet)  this is a chance to grow --- my first radio (HW-16) took MONTHS to get working right....horrible key clicks, etc...


For the MANUFACTURER --- well I bet they realize quite well that their sales could plummet and they really need to take advantage of the incredible detective work that has been done here, with the problem discovered, and then analyzed and figured out --- and multiple possible solutions also in construction.    I suspect a lot of work on their part,  is ongoing right now to assuage this problem.   For the people whom I'm mentoring RIGHT NOW --- we'll do workarounds and figure out improvements and they will learn evenmore, tho I'm sure they will be a tiny bit downcast that their new little jewel has a problem we need to work on....but that is the nature of learning.   


Cheers,


Gordon Gibby KX4Z






From: BITX20@groups.io <BITX20@groups.io> on behalf of Scott McDonald via Groups.Io <ka9p@...>
Sent: Wednesday, August 8, 2018 7:32 AM
To: BITX20@groups.io
Subject: Re: [BITX20] New Warning on uBITx.net
 
A basic thought could be that a professional radio man would read the statements on Farhan’s website that this is a kit, offered AS IS, not warrantied to any specification, and would not take it on board, eh?

The radio and the open collaboration of the people on this reflector to teach others and make it better has been to me one of the most amazing and positive amateur radio experiences I’ve had.  

Cheers, Scott KA9P

Make something good happen!

On Aug 8, 2018, at 4:05 AM, Timothy Fidler <engstr@...> wrote:

Boll_ks. there is no fix . there is a maybe fix in the  works. Some people who use or try to  this kit are professional radio men on ships and the like and they don't want their professional blotter compromised by a prosecution from the SMA / FCC and the like .. or even an investigation.  Your statement lacks any level of basic thought IMHO.

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



----- Original Message -----

To:
<BITX20@groups.io>
Cc:

Sent:
Wed, 8 Aug 2018 09:53:37 +0100
Subject:
Re: [BITX20] New Warning on uBITx.net


Bit OTT considering a fix was sorted within a couple of days.

 

 

From: BITX20@groups.io <BITX20@groups.io> On Behalf Of Mike Woods
Sent: 08 August 2018 09:37
To: BITX20@groups.io
Subject: [BITX20] New Warning on uBITx.net

 

I felt that I had no choice but to post a warning for potential uBITx purchasers and existing constructors that there were serious issues with emissions purity.  The following warning now appears on the first (permanently fixed) post:

WARNING:  Issues have been identified recently with the emissions purity of the µBITx.  It is recommended that you study recent posts on this website and avoid operations that could breach emissions requirements.

A reminder that uBITx.net has no association with HF Signals.  It is purely an information site.

I am sorry that the situation has resulted in requiring such a warning.   I have also updated the strengths and weaknesses page with a similar message.

73 Mike ZL1AXG ubitx.net

--
Mike Woods
mhwoods@...

Bill Bates
 

My thoughts exactly ! Less is more, so much more fun to get contacts o a few watts than shop bought kit & a hundred watts 😊, Bill G6ATO


From: n3ode@...
Sent: ‎08/‎08/‎2018 01:09 PM
To: BITX20@groups.io
Subject: Re: [BITX20] New Warning on uBITx.net

As a tech class amateur I cannot justify a full featured radio with the limited bandwidth available to me.  I want to upgrade to general class which will open all bands and a dramatic amount of bandwidth. 

This unit has allowed me to dip my toe into HF and learn a bit more of the theory which I lacked working UHF and VHF FM for 25 years.  I am hooked on QRP operation and will learn much more using this radio in low power for discovery of good antenna systems. 

Simple is beautiful and a unit with one button, one knob, and a tuner is quite pretty to me. 

John N3ODE
 

p.gould1@sky.com <p.gould1@...>
 

To Bill G6ATO & John N3ODE. Well said! I probably had more enjoyment building a snazzy enclosure than possibly anything I can remember. Just built the V4 ubitx and yes the rx audio is horrible to say the least, but it works!! It appears to work better at night which suggests to me that it may be the ubitx does require a better than average antenna to unleash it's potential. At the moment I use a folded dipole, 12 metres long and very low, about 7 m running down to about 4m no tuner no balun and centre fed with co-ax. And I've managed 1500 miles in the early evening with my other 2 watter. By the by, my thanks to Dave G4ADY for suggesting a firmware update for keying problems, worked a treat! 73 to everyone Paul M6FEU
--------------------------------------------

On Wed, 8/8/18, Bill Bates <billy.bates@...> wrote:

Subject: Re: [BITX20] New Warning on uBITx.net
To: BITX20@groups.io
Date: Wednesday, 8 August, 2018, 13:50

My
thoughts exactly ! Less is more, so much more fun to get
contacts o a few watts than shop bought kit & a hundred
watts 😊, Bill G6ATOFrom:
n3ode@...
Sent:
‎08/‎08/‎2018 01:09
PM
To:
BITX20@groups.io
Subject:
Re: [BITX20] New Warning on
uBITx.net

As a tech class amateur I cannot
justify a full featured radio with the limited bandwidth
available to me.  I want to upgrade to general class which
will open all bands and a dramatic amount of
bandwidth. 

This unit has allowed me to dip my toe
into HF and learn a bit more of the theory which I lacked
working UHF and VHF FM for 25 years.  I am hooked on QRP
operation and will learn much more using this radio in low
power for discovery of good antenna systems. 

Simple is beautiful and a unit with
one button, one knob, and a tuner is quite pretty to
me. 

John N3ODE

Doug W
 

On Wed, Aug 8, 2018 at 04:39 AM, Timothy Fidler wrote:
 If I bought a S+W revolver in the US and used standard S and W  ammo and the cylinder blew out I would expect a new one or a refund. It is called "fitness for purpose" and is often used in the courts.
So to finish your analogy for you, you bought a low cost black powder kit and expect it to work exactly like an expensive complete model from a major manufacturer.

As to your courtroom argument, I agree it is fun to play lawyer many actors and actresses make a nice living at it.  Let's keep the game going.  I'll play defense since Jack Nicholson and pals are probably busy.  The scene opens to me standing in front of a big monitor highlighting the following phrase from the site where you bought your kit  "The HF Signals kits are supplied as-is without any promise that they will work to any particular specification."  Then I laugh and sit down.  It would be a short movie.
 
--
www.bitxmap.com

Bill Bates
 

I like it, as a Christian I am continually reminded not to pass judgment too quickly & most importantly to listen patiently to BOTH sides of the argument 😊 before doing anything, be slow to speak & quick to listen, bear with one another's weaknesses, we could all do with a little slack when it comes to being critical or too quick to criticize 😊. Bill G6ATO


From: Doug W
Sent: ‎08/‎08/‎2018 03:11 PM
To: BITX20@groups.io
Subject: Re: [BITX20] New Warning on uBITx.net

On Wed, Aug 8, 2018 at 04:39 AM, Timothy Fidler wrote:
 If I bought a S+W revolver in the US and used standard S and W  ammo and the cylinder blew out I would expect a new one or a refund. It is called "fitness for purpose" and is often used in the courts.
So to finish your analogy for you, you bought a low cost black powder kit and expect it to work exactly like an expensive complete model from a major manufacturer.

As to your courtroom argument, I agree it is fun to play lawyer many actors and actresses make a nice living at it.  Let's keep the game going.  I'll play defense since Jack Nicholson and pals are probably busy.  The scene opens to me standing in front of a big monitor highlighting the following phrase from the site where you bought your kit  "The HF Signals kits are supplied as-is without any promise that they will work to any particular specification."  Then I laugh and sit down.  It would be a short movie.
 
--
www.bitxmap.com

ajparent1/kb1gmx
 

IT is an issue.

An external switchable filter can correct it until a more complete solution is built and sold.

Fixing issues in a radio that was mostly a group design is what "WE, the collective group"
are here for.   It is fixable.

The fix for certain is not a single point part its a layout and use.  The relays are fine,
the filters are good enough.  However when you combine them incorrectly you get a
poor result.  The fix is combine correctly.  Most available external boards seem to do that.

Allison

Arv Evans
 

Tim
What is this "uBITX40"?  Never heard of that.  Maybe you mean the BITX40?  

Do you have a BITX40 and what tests have you performed to support the claim that it does not meet criteria?  What were results of your tests?

Yes, i have posted comments on improving the LPF performance on my BITX40, but this was because itbis easy to set the bias improperly resulting in non-linearity in rhe RF PA amplifier.  My comments were related to that situation, and my own interest in learning more about using LTSpice.  

Arv. K7HKL
_-_







Sent from my Verizon, Samsung Galaxy smartphone

-------- Original message --------
From: Timothy Fidler <engstr@...>
Date: 8/8/18 3:02 AM (GMT-07:00)
To: BITX20@groups.io
Subject: Re: [BITX20] New Warning on uBITx.net

The note should also cover the uBitx40 because it is marginal as to emissions and many people will add a power amp and find  themselves outside the law. There are other issues with this unit using some components at the limit of the component design capacity and therefore some units will fail early with zero local warranty/repair  service.   

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



----- Original Message -----
From:
BITX20@groups.io

To:
<BITX20@groups.io>
Cc:

Sent:
Wed, 8 Aug 2018 20:37:22 +1200
Subject:
[BITX20] New Warning on uBITx.net


I felt that I had no choice but to post a warning for potential uBITx purchasers and existing constructors that there were serious issues with emissions purity.  The following warning now appears on the first (permanently fixed) post:

WARNING:  Issues have been identified recently with the emissions purity of the µBITx.  It is recommended that you study recent posts on this website and avoid operations that could breach emissions requirements.

A reminder that uBITx.net has no association with HF Signals.  It is purely an information site.

I am sorry that the situation has resulted in requiring such a warning.   I have also updated the strengths and weaknesses page with a similar message.

73 Mike ZL1AXG ubitx.net

--
Mike Woods
mhwoods@...

James Lynes
 

Just modify the warning to mention that external filters are a work-around for existing units. I plan on doing this and packaging to allow use in other future projects.

Also, we should all hope that Farhan and HFSignals choose to do a v5 layout with filter fixes and other mods as well.

James
KE4MIQ

Gary Sargent
 

I was thinking of buying a uBITx for a winter project .. to build it and tweak it here and there. But now the problems with the noisy final circuitry along with the other, more minor problems, have me putting obtaining one on hold. I'll wait to see how this and some other issues gets resolved. Then decide.  So for now ... I'll stick with my FT817 and FT450D ... and look for some other winter radio project! Many thanks to all of those who are delving into uBITx design and finding improvements.
KE8WO

Jerry Gaffke
 

The Bitx40 is solid, and half the price.
An excellent choice for the experimenter.
Some assembly required.


On Wed, Aug 8, 2018 at 08:38 AM, Gary Sargent wrote:
I was thinking of buying a uBITx for a winter project .. to build it and tweak it here and there. But now the problems with the noisy final circuitry along with the other, more minor problems, have me putting obtaining one on hold. I'll wait to see how this and some other issues gets resolved. Then decide.  So for now ... I'll stick with my FT817 and FT450D ... and look for some other winter radio project! Many thanks to all of those who are delving into uBITx design and finding improvements.
KE8WO

Bo Barry <bobarr@...>
 

Very wise words irregardless of your religion too, to avoid criticism for using that revered word .
That philosophy and demand for indisputable FACTS to go with the opinions  is the ONLY way to go, IMO, if my opinion matters. 😂. I'm with you! Bo W4GHV since '54