Date   
wiring harnesses

Richard E Neese
 

anyone here know where to get extra wiring harnesses for the ubitx and the bix40 ? we have 3 boards we recovered but no wiring harnesess

Re: experience with Sunil VU3SUA's enclosures #ubitx

Eddie Esserman
 

I like mine too.  Even the puzzle of getting it all together with the ubitx parts is sorta fun, and mysterious.  We'll feel our way. I go back to the old Budd Box days, and this is a dream.  Still have a nibbling tool.  Never made a decent nibble.  Hi.

Eddie

Re: Anyone with a Raduino for the uBITX version3 for sale?

Richard E Neese
 

look at the wa6isp board it is a better replacement RaduinoX its worth it .

Re: uBITX HF transceiver and blue MBITX metal case.

Mark M
 

Google 'rar file mac'. Lots of options.

Mark AA7TA

On 7/31/18 7:28 PM, Eddie Esserman wrote:
Dear Sunil,
How do we (I, actually, the other good students got it) open the rar file on a mac? ...

Re: End Fed antennas w/ uBITX #ubitx

Timothy Fidler
 

 Allison sort of off topic  , recent email to you at ARRL addr  re avail of RF Ts in Australasia NOS  as a result of all work done for  Bitx . Definitely not as a Schiller  but you can take it as the latter if you like. :-).

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:
Tue, 31 Jul 2018 17:20:39 -0700
Subject:
Re: [BITX20] End Fed antennas w/ uBITX


I have and disproved your methods, logic and resulting data.

Allison

Re: uBitx V4 linearity mod in final audio amplifier #ubitx

Ronald Gratehouse
 

Glad you brought up the CW filter. Very frustrating. Awhile back I built a QRPp rig from Breadboardradio. Com. Great little half-watt transceiver. The other night frustrated with the bandwidth of my UBITx, I thought of the Toothpick CW filter from that rig, so, I hooked it up and it worked great. Couldn’t imagine how much it reduced noise level, and improved CW selectivity. CW filter is absolutely a must.

Ron KI5ADZ

Re: wiring harnesses

Ian Reeve
 

The connectors are Molex type KK 0.1” pitch and are widely available through places like eBay. Available in various number of terminal “ways” 

 

The terminals themselves are crimp but I solder them without difficulty and they then click into place.

 

Hope this helps

Ian M0IDR

 

Sent from Mail for Windows 10

 


From: BITX20@groups.io <BITX20@groups.io> on behalf of Richard E Neese <kb3vgw@...>
Sent: Wednesday, August 1, 2018 3:34:00 AM
To: BITX20@groups.io
Subject: [BITX20] wiring harnesses
 
anyone here know where to get extra wiring harnesses for the ubitx and the bix40 ? we have 3 boards we recovered but no wiring harnesess

Re: wiring harnesses

Glenn
 

Richard, I don't know if you could obtain the exact original harness's, but you could make your own if it comes down to it.
You could buy the connectors from Mouser/Digikey I suspect, but for the sockets you preferably need a crimping tool or its a bit tedious.

There is another way, that I have used:-
eBay has header strips and sockets you can cut to length. https://www.ebay.com/itm/5-PCS-40-Pin-2-54mm-Single-Row-Straight-Male-Female-Pin-Header-Strip-AD/112176232585?epid=1349422579&hash=item1a1e397889%3Ag%3A9YcAAOSwEzxYT2Oz&_sacat=0&_nkw=HEADER&_from=R40&rt=nc&_trksid=p2334524.m570.l1313.TR11.TRC2.A0.H0.XHEADER.TRS1.TSS0&LH_TitleDesc=0

You can cut them to length and solder wires to them, heat-shrink the solder joint for mechanical strength, then put a bit of hot melt glue over the area.  I have done this many times, pictures are of my adapter cable to fit a Nextion display to a Raduino for example.



Re: experience with Sunil VU3SUA's enclosures #ubitx

Ian Reeve
 

https://amateurradiokits.in/pictures-of-ubitx-case/

 

 

 

That link gives some detail, I was particularly interested in the led wiring which is shown here. I also have the connectivity for the rear panel if I can oly find it!

 

 

Trouble is

Eddie to be honest, I find so many different threads and e-mails, I get swamped and do not always conduct my computer filing in decent order.

 

I will find it and send the pic to use for Arduino to usb on the rear panel. Cant find any info on the two jack plugs or 9 pin DSub which is pretty well obsolete now anyway.

 

I dry built mine in the enclosure making sure everything fitted prior to doing any soldering.

 

Hope this helps but am always willing to assist with pictures, the only tricky bit was assembling the display spacers and getting it positioned correctly so nothing is being forced into alignment.

 

My personal e-mail is ian.radioworkshop@... and would be happy to help

 

Best 73

 

Ian M0IDR

 

Sent from Mail for Windows 10

 


From: BITX20@groups.io <BITX20@groups.io> on behalf of Eddie Esserman <ee@...>
Sent: Wednesday, August 1, 2018 3:31:47 AM
To: BITX20@groups.io
Subject: Re: [BITX20] experience with Sunil VU3SUA's enclosures #ubitx
 
Ian,

Can you point me to the construction record you're referring to in first sentence?  Tnx.

Eddie WA4JXL

Re: ND6T AGC and Click kit wiring notes

G8HAV
 

Hi, I have been trying to get some software to produce the layout from a Gerber file, but I keep getting companies who will make a PCB from a .Gbr file. Is that the way to go? I use DesignSpark by RS for board design but there is no provision to import .Gbr. There is provision to export. Thanks

 

Sent from my Windows 10 device

 


From: BITX20@groups.io <BITX20@groups.io> on behalf of William R Maxwell <wrmaxwell@...>
Sent: Wednesday, August 1, 2018 12:02:27 AM
To: BITX20@groups.io
Subject: Re: [BITX20] ND6T AGC and Click kit wiring notes
 

Well done Kees and thanks. I agree the moment has come to call "Time". Having the gerbers available will enable others to have boards produced if required, including future group buys.

73

Bill, VK7MX


On 1/08/2018 1:20 AM, Kees T wrote:
A total of 864 AGC and/or Click mini-kits have been shipped so far. This is way more than i expected but that's OK .....popular circuits Don, ND6T, came up with.  Presently, I have about 20 AGC boards left from the last EasyEDA board order and about 100 Click boards left. It's been fun but it's time for me to do something else (like the SWR/Power meter as described earlier).

The new Ver 4 uBITX boards have the Click problem fixed. Therefore, after the last available AGC mini-kits have been sold/shipped, I'm going to quit and pass the torch to someone else. Order rates have dropped off some, so maybe everyone who wanted a mini-kit has one ??

The AGC board and Click board Gerbers have been uploaded to the files section under my call.

"On order" and "shipped" information is available in the "Files" section under my call.

73 Kees K5BCQ

Re: ND6T AGC and Click kit wiring notes Gerber files

Timothy Fidler
 

Sorry . your name is  missing - It is hardly surprising that your software cannot import gerbers, which are simply a set of instructions for an industry standard PCB mafr process from the sixties.  Essentially it has to convert a physical layout back into a schematic.  It has no idea what the active devices were, just their footprints..Imagine a DS board with components mounted both sides. I has to convert that back to a design file at 100 percent accuracy. And some industrial PCBs are laminated up and have say 8 layers. It  would have to convert that back flawlessly.  (Just because someone wanted to reverse engineer something after losing the design file or for Industrial piracy reasons.)

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" <BITX20@groups.io>
Cc:

Sent:
Wed, 1 Aug 2018 08:30:06 +0000
Subject:
Re: [BITX20] ND6T AGC and Click kit wiring notes


Hi, I have been trying to get some software to produce the layout from a Gerber file, but I keep getting companies who will make a PCB from a .Gbr file. Is that the way to go? I use DesignSpark by RS for board design but there is no provision to import .Gbr. There is provision to export. Thanks

 

Sent from my Windows 10 device

 


From: BITX20@groups.io <BITX20@groups.io> on behalf of William R Maxwell <wrmaxwell@...>
Sent: Wednesday, August 1, 2018 12:02:27 AM
To: BITX20@groups.io
Subject: Re: [BITX20] ND6T AGC and Click kit wiring notes
 

Well done Kees and thanks. I agree the moment has come to call "Time". Having the gerbers available will enable others to have boards produced if required, including future group buys.

73

Bill, VK7MX


On 1/08/2018 1:20 AM, Kees T wrote:
A total of 864 AGC and/or Click mini-kits have been shipped so far. This is way more than i expected but that's OK .....popular circuits Don, ND6T, came up with.  Presently, I have about 20 AGC boards left from the last EasyEDA board order and about 100 Click boards left. It's been fun but it's time for me to do something else (like the SWR/Power meter as described earlier).

The new Ver 4 uBITX boards have the Click problem fixed. Therefore, after the last available AGC mini-kits have been sold/shipped, I'm going to quit and pass the torch to someone else. Order rates have dropped off some, so maybe everyone who wanted a mini-kit has one ??

The AGC board and Click board Gerbers have been uploaded to the files section under my call.

"On order" and "shipped" information is available in the "Files" section under my call.

73 Kees K5BCQ

Re: ND6T AGC and Click kit wiring notes Gerber files

G8HAV
 

Thanks for the clarification. My name is Peter


Peter Paul Fox G8HAV
Mid-Cheshire Amateur Radio Society
5 Llandovery Close
Winsford
Cheshire CW7 1NA 

Group Controller
Dane Valley RAYNET 
Tel: 01606553401 (H)
Tel: 07919315547 (M)


From: BITX20@groups.io <BITX20@groups.io> on behalf of Timothy Fidler <engstr@...>
Sent: 01 August 2018 10:12:37
To: BITX20@groups.io
Subject: Re: [BITX20] ND6T AGC and Click kit wiring notes Gerber files
 
Sorry . your name is  missing - It is hardly surprising that your software cannot import gerbers, which are simply a set of instructions for an industry standard PCB mafr process from the sixties.  Essentially it has to convert a physical layout back into a schematic.  It has no idea what the active devices were, just their footprints..Imagine a DS board with components mounted both sides. I has to convert that back to a design file at 100 percent accuracy. And some industrial PCBs are laminated up and have say 8 layers. It  would have to convert that back flawlessly.  (Just because someone wanted to reverse engineer something after losing the design file or for Industrial piracy reasons.)

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" <BITX20@groups.io>
Cc:

Sent:
Wed, 1 Aug 2018 08:30:06 +0000
Subject:
Re: [BITX20] ND6T AGC and Click kit wiring notes


Hi, I have been trying to get some software to produce the layout from a Gerber file, but I keep getting companies who will make a PCB from a .Gbr file. Is that the way to go? I use DesignSpark by RS for board design but there is no provision to import .Gbr. There is provision to export. Thanks

 

Sent from my Windows 10 device

 


From: BITX20@groups.io <BITX20@groups.io> on behalf of William R Maxwell <wrmaxwell@...>
Sent: Wednesday, August 1, 2018 12:02:27 AM
To: BITX20@groups.io
Subject: Re: [BITX20] ND6T AGC and Click kit wiring notes
 

Well done Kees and thanks. I agree the moment has come to call "Time". Having the gerbers available will enable others to have boards produced if required, including future group buys.

73

Bill, VK7MX


On 1/08/2018 1:20 AM, Kees T wrote:
A total of 864 AGC and/or Click mini-kits have been shipped so far. This is way more than i expected but that's OK .....popular circuits Don, ND6T, came up with.  Presently, I have about 20 AGC boards left from the last EasyEDA board order and about 100 Click boards left. It's been fun but it's time for me to do something else (like the SWR/Power meter as described earlier).

The new Ver 4 uBITX boards have the Click problem fixed. Therefore, after the last available AGC mini-kits have been sold/shipped, I'm going to quit and pass the torch to someone else. Order rates have dropped off some, so maybe everyone who wanted a mini-kit has one ??

The AGC board and Click board Gerbers have been uploaded to the files section under my call.

"On order" and "shipped" information is available in the "Files" section under my call.

73 Kees K5BCQ

Re: Spurious RF at beginning of CW transmission in the uBitx

n1kw@...
 

Yes, N3GO gets the credits for the good idea!!

Bob N1KW

Re: Spurious RF at beginning of CW transmission in the uBitx

 

Right Jerry!

First mod I did on the ubit. now when I tune across the bands I hear the relays switching during RX.

Raj

At 30-07-18, you wrote:
I'd be fine with constantly powering the LPF relays on my rig.
And may be the best solution.

Re: Spurious RF at beginning of CW transmission in the uBitx

 

This issue of carrier leak on PTT caused by DC flow through the product detector
seems to be absent in uBitx.

Raj


At 31-07-18, you wrote:
Raj had a nice simple fix for the carrier burst on the Bitx40,
might be applicable to the uBitx: 
    https://groups.io/g/BITX20/message/33707
    https://groups.io/g/BITX20/message/33742

As I recall, there were a half dozen other fixes that worked.
We've already mentioned delays in software as Allard has done for the Bitx40.

Re: Anyone with a Raduino for the uBITX version3 for sale?

Paul Galburt - K2AYZ
 

Hi, Dennis,

Do you have a link for the VF4PLN board?

73,

Paul K2AYZ

New uBITX Raduinos for sale #ubitx

Jim Sheldon
 

I have 2 brand new, unused Raduinos from V4 kits of mine that I will never use.  These are the later Raduinos that have the NANO mounted on the backside to keep it from interfering with the display.

They are still wrapped in the original bubble wrap and will include the original display. They are available for $40 each shipped in the US.  International shipping costs $14 to $15 USD and would have to be added for shipping to anyone outside the US.

Interested,  please reply direct to me, not the group to minimize clutter (there's been too much of that lately).  My email address is good on my website (www.w0eb.com) there are links there to email me but it is (use standard email format) w0eb [at] cox dot net.

Jim Sheldon, W0EB

Re: End Fed antennas w/ uBITX #ubitx

Warren Allgyer <allgyer@...>
 

I have been asked by private message what it is about the QST Review test methodology that I found invalid. I constructed this explanation of their test in response and I would like to share it with the group.

The testers used a setup that is used by the ARRL Lab to test the loss of Antenna Tuners. When testing an Antenna Tuner the tuner itself converts whatever load is presented by the "Load Box" back to 50 ohms as a termination for the RF Source. The inline HP RF Power Meter is working in its natural 50 ohm domain and should be accurate within the specification of the meter.

When testing a 49:1 transformer however, there is no way to adjust the termination to 50 ohms. So, with an 800 ohm load selected in the load box as the authors specify in the email trail, the RF Source and the source power meter are operating in a 16 ohm environment. What the actual power out of the source is, and what power is indicated on the source power meter with a 16 ohm load, are determined by the characteristics of each box. It most certainly cannot be assumed to be 10 watts. The error in this step can easily be over 6 dB.

When the test therefore shows the transformer to have a loss of 0.2 dB, the actual loss could be as much as 6.2 dB.

The two transformer back to back test that I have documented does not suffer from a load mis-match and is therefore a far more appropriate way to do this measurement.

Re: End Fed antennas w/ uBITX #ubitx

Gordon Gibby <ggibby@...>
 

​Do you know why they didn't use 49*50 ohms as their termination?   


I didn't read the email trail (sorry, just not enough time in this world) but it seems like you could make a dummmy load for that if necessary.   


What I have gleaned out of all this argumentation back-and-forth is that these things can have single-digit losses if working into a resonant piece of wire.   And that using a tuner is preferable. [I always work for lowest losses personally.]  Some of our newer hams locally are very limited in their "radio assets".   We'll be building uBitx's beginning in a bout 3 weeks.  We have already built 11 knockoffs of the Buckmaster off-center fed antenna and I hope to high heaven we built baluns etc with single-digit losses!!   At any rate, it will be a huge improvement over what most of them had beforehand (NOTHING HF).    Their skills are growing and I've learned a lot from all the discussions of various "issues" on this forum.   


After we get the "stock units" working, hopefully with v4 factory software and setting the oscillator numbers precisely in the code itself, we will begin on some of the most important improvements, which I haven't had time to get to quite yet....one year ago these hams didn't know a resistor from a transistor.....


cheers,


gordon




From: BITX20@groups.io <BITX20@groups.io> on behalf of Warren Allgyer <allgyer@...>
Sent: Wednesday, August 1, 2018 8:53 AM
To: BITX20@groups.io
Subject: Re: [BITX20] End Fed antennas w/ uBITX
 

I have been asked by private message what it is about the QST Review test methodology that I found invalid. I constructed this explanation of their test in response and I would like to share it with the group.

The testers used a setup that is used by the ARRL Lab to test the loss of Antenna Tuners. When testing an Antenna Tuner the tuner itself converts whatever load is presented by the "Load Box" back to 50 ohms as a termination for the RF Source. The inline HP RF Power Meter is working in its natural 50 ohm domain and should be accurate within the specification of the meter.

When testing a 49:1 transformer however, there is no way to adjust the termination to 50 ohms. So, with an 800 ohm load selected in the load box as the authors specify in the email trail, the RF Source and the source power meter are operating in a 16 ohm environment. What the actual power out of the source is, and what power is indicated on the source power meter with a 16 ohm load, are determined by the characteristics of each box. It most certainly cannot be assumed to be 10 watts. The error in this step can easily be over 6 dB.

When the test therefore shows the transformer to have a loss of 0.2 dB, the actual loss could be as much as 6.2 dB.

The two transformer back to back test that I have documented does not suffer from a load mis-match and is therefore a far more appropriate way to do this measurement.

Re: End Fed antennas w/ uBITX #ubitx

Russ Hines
 

Noticing this thread is taking on the epic proportions of a similar thread involving baluns on another forum some years ago.  It resulted in this paper:

http://home.earthlink.net/~christrask/TraskTLTTutorial.pdf

Gentleman and lady, write a paper.
Russ Hines
JMS & Associates, Inc.
SBE CSRE
WB8ZCC
--
Reply to: russ@...
On 8/1/2018 9:04 AM, Gordon Gibby wrote:

​Do you know why they didn't use 49*50 ohms as their termination?   


I didn't read the email trail (sorry, just not enough time in this world) but it seems like you could make a dummmy load for that if necessary.   


What I have gleaned out of all this argumentation back-and-forth is that these things can have single-digit losses if working into a resonant piece of wire.   And that using a tuner is preferable. [I always work for lowest losses personally.]  Some of our newer hams locally are very limited in their "radio assets".   We'll be building uBitx's beginning in a bout 3 weeks.  We have already built 11 knockoffs of the Buckmaster off-center fed antenna and I hope to high heaven we built baluns etc with single-digit losses!!   At any rate, it will be a huge improvement over what most of them had beforehand (NOTHING HF).    Their skills are growing and I've learned a lot from all the discussions of various "issues" on this forum.   


After we get the "stock units" working, hopefully with v4 factory software and setting the oscillator numbers precisely in the code itself, we will begin on some of the most important improvements, which I haven't had time to get to quite yet....one year ago these hams didn't know a resistor from a transistor.....


cheers,


gordon




From: BITX20@groups.io <BITX20@groups.io> on behalf of Warren Allgyer <allgyer@...>
Sent: Wednesday, August 1, 2018 8:53 AM
To: BITX20@groups.io
Subject: Re: [BITX20] End Fed antennas w/ uBITX
 

I have been asked by private message what it is about the QST Review test methodology that I found invalid. I constructed this explanation of their test in response and I would like to share it with the group.

The testers used a setup that is used by the ARRL Lab to test the loss of Antenna Tuners. When testing an Antenna Tuner the tuner itself converts whatever load is presented by the "Load Box" back to 50 ohms as a termination for the RF Source. The inline HP RF Power Meter is working in its natural 50 ohm domain and should be accurate within the specification of the meter.

When testing a 49:1 transformer however, there is no way to adjust the termination to 50 ohms. So, with an 800 ohm load selected in the load box as the authors specify in the email trail, the RF Source and the source power meter are operating in a 16 ohm environment. What the actual power out of the source is, and what power is indicated on the source power meter with a 16 ohm load, are determined by the characteristics of each box. It most certainly cannot be assumed to be 10 watts. The error in this step can easily be over 6 dB.

When the test therefore shows the transformer to have a loss of 0.2 dB, the actual loss could be as much as 6.2 dB.

The two transformer back to back test that I have documented does not suffer from a load mis-match and is therefore a far more appropriate way to do this measurement.