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Re: Harmonics and Relay Replacement
I sent Mike a private email asking if these were pin for pin compatible. ?While waiting for an answer I did some more research and find they ARE pin for pin. ?They are also available at Digi-Key under the part# PB1055-ND for a couple of pennies less plus a bit cheaper shipping. ?They are $2.81 each singly and $2.633 apiece in quantities of 10 each (enough to replace all 5 relays in 2 radios for $26.33 plus shipping. I ordered 10 of them from Digi-Key and will replace all 5 relays in both of my V4 boards. ?I'll run spectrum analysis on mine once I get that done and hopefully will duplicate Mike's indications. ?Might be the simplest fix at least for the harmonic problem anyway. ?Since I operate only CW, I'm not concerned with the SSB spurs anyway. BTW, right now, both my V4 boards DO meet FCC spec with all harmonics -45 to -48 dBC on both boards. ?I have NOT adjusted the factory set PA bias or the power controls as prior experience showed me that doing so was a great way to get the rig out of spec for sure. ? After changing the relays I'll do a complete bias adjustment on the PA transistors per the HF signals website instructions and check harmonics again. ?If they are still in spec after that I'll play around with the power control while watching the spectrum analyzer to see what, if any changes occur. I was recently given the use of an IFR A-8000 spectrum analyzer that was calibrated less than a month ago so I think the tests will be pretty accurate (after I learn how to use the beast! - LOL) Jim Sheldon, W0EB
------ Original Message ------
From: "Mike Doty via Groups.Io" <mikedoty@...>
Sent: 10/8/2018 2:53:49 PM
Subject: [BITX20] Harmonics and Relay Replacement I thought I would pass this along, for whatever it is worth.? I have two Ver 3 and one Ver 4 uBiTX rigs.? I have replaced K3, KT1, KT2, and KT3 relays with Axicom relays which has knocked down the 3rd, 5th, and 7th harmonic levels from -35dB to below -50dB on all 3 rigs without any board modifications to the LPF circuits.? This may be anecdotal but with 3 rigs showing the same results it may be something to consider.? I purchased the relays from Mouser - part # 655-V23105A5403A201.? Cost was $2.89 per relay plus shipping.? I've attached photos (sorry for the blurriness) showing the before and after results on my Ver 4 rig. |
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I captured my own PSK31 signal and it is not a pretty picture
#ubitx-help
#filters
So i finally got my SDR working at the same time as my uBITX while doing PSK31, and nothing blew up. Yea.
The picture shows big spikes off the center, if I read this right.? Am I interpreting this frequency distribution correctly? I assume I should see a major spike and little else, correct? Note, my sound card is at the lowest level I can set it.? Is there something else I should do? I have to assume operator error is a major player here. hahah. |
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Re: Harmonics and Relay Replacement
Thanks Jack.? I wish I could say that I discovered this intentionally but, to be honest, it was completely accidental.? I had removed the original relays from my first uBiTX while looking for a solution to the harmonics issue.? In doing so, I broke a pin on one of the original relays.? I had some of the Axicom relays in the junk box so I ended up sticking those in as replacements for all 5 of the relays.? When I put things back together and looked at the output I saw that the harmonics were all down below -50dB.? I still had 4 of the Axicom relays left in the junk box so I replaced the 4 relays on my second Ver 3 rig, leaving K1 in place.? I saw the same results.? To be sure that there wasn't something else involved before posting to the group, I ordered more relays and replaced the same 4 relays in my Ver 4 uBiTX.? Again, the same results.? I've attached pictures of the spectrum analyzer results for both of my Ver 3 rigs so you can see that it wasn't just coincidental. Unfortunately I didn't take pictures of the other two rigs before replacing the relays but they both originally had harmonics around -35dB before the relay swaps.? All of the spectrum analyzer results for each rig shown are on 40 meters at 10 watts with the SA span from 1 MHz to 100MHz but I cannot see any harmonics above -50dB on any band, 80 - 10.?
--73-- Mike |
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Harmonics and Relay Replacement
I thought I would pass this along, for whatever it is worth.? I have two Ver 3 and one Ver 4 uBiTX rigs.? I have replaced K3, KT1, KT2, and KT3 relays with Axicom relays which has knocked down the 3rd, 5th, and 7th harmonic levels from -35dB to below -50dB on all 3 rigs without any board modifications to the LPF circuits.? This may be anecdotal but with 3 rigs showing the same results it may be something to consider.? I purchased the relays from Mouser - part # 655-V23105A5403A201.? Cost was $2.89 per relay plus shipping.? I've attached photos (sorry for the blurriness) showing the before and after results on my Ver 4 rig.
--73--? Mike? --? W0MNE |
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Re: PTT for uBITX ?
M Garza
To cause PTT, you need to go low. PTT actually is happening via the Raduino and not directly from the transistor drivers. Please look at the first image on this page:??. PTT is wired directly to the Raduino. Hope this helps. Marco - KG5PRT On Mon, Oct 8, 2018, 2:20 PM Woody <mailme@...> wrote:
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Re: uBitx Software Update
¿ªÔÆÌåÓýHi Bill and others more ...
?
it was how I think about myself : Most I`m thinking to complicate !
I found this video from KD8CEC :?
?
My next step was looking for ¡°XLoader¡± , downloaded and installed .
Then downloaded only the KD8CEC FW v1.08 hex-zip , saved and unzipped
.
The same with the uBITX-Manager .
With XLoader uploaded the FW v1.08 into the Arduino-Nano , successfull
!
After this running the uBITX-Manager configured and write to Arduino the
new
done settings !
All works successfull : CW-Sidetone changed &stored and
encoder-tune-steps now 10 Hz .
?
Thank you all for bearing the discussion about my stupid questions
...
?
73 , Jens / HB9JOI
?
+++
?
?
-----Urspr¨¹ngliche Nachricht----- From: Bill Cromwell
Sent: Monday, October 8, 2018 7:56 PM
Subject: Re: [BITX20] uBitx Software Update
?
Hi Jen's
?
Let me start by saying it is so easy that even *I* could do it. That
doesn't mean I know it well enough to teach somebody else. If nobody
else steps up I will work something out with your and we will give it
try. I will learn more about by helping you. I cannot go live online
with you much before this weekend. I am a very busy retiree :)
?
Next...
?
Did you say that you are using the original display? Do you have USB
cables with connectors that will fit your computer at one end and that
small connector on the raduino unit at the other end? I will look at
CEC's site and send you the URL to the file to download. I can do that
*before* the weekend.
?
What operating system do you use? I am on linux but that won't matter. I
will review the Windows or iOS stuff if needed. We should move this to
private email so as not to further clutter the mail list.
?
73,
?
Bill? KU8H
?
On 10/08/2018 01:34 PM, Jens wrote:
> Hi Jack ,
>
> I have studied the internet ...
> Sorry, but now somehow I'm "too stupid" or I think too
complicated
> and it's a lot easier than I think.
> To install the firmware v1.08 of KD8CEC on the uBITX I know
> not which files I need and have to download, also how a source
to
> is to compile and how to proceed with the hex file and the upload to
uBITX.
>
> I am totally confused with these things because I have never done it
and
> after searching and study the internet (KD8CEC) I am now
complete
> confused about
> with the many files, because I do not know what is needed to update
the
> uBITX on v1.08.
>
> Please ... is here someone? who can and wants do the things
together
> with me via TEAMVIEWER online ....
> for the first time so I can learn it ... ???
>
>
> 73 , Jens / HB9JOI
>
?
--
bark less - wag more
?
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PTT for uBITX ?
Woody
¿ªÔÆÌåÓýI see many threads that indicate grounding (at MIC)?? I plan to use a discreet PTT line to T/R From the schematic, it appears that taking the input high initiates PTT for TX. All my stuff takes a PTT line low for TX.?? I guess I will need to invert.? Comments ????? |
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Re: uBitx Software Update
¿ªÔÆÌåÓýHi Bill ,
?
Your questions : "What operating system do you use? I am on linux but that
won't matter. I
will review the Windows or iOS stuff if needed. We should move this to
private email so as not to further clutter the mail list. "
?
- Windows-10
- Arduino USB connection to PC is ok
- Arduino IDE software is installed
?
My private E-Mail :? hb9joi@...
?
73 , Jens / HB9JOI
?
+++
?
?
?
?
-----Urspr¨¹ngliche Nachricht----- From: Bill Cromwell
Sent: Monday, October 8, 2018 7:56 PM
Subject: Re: [BITX20] uBitx Software Update
?
Hi Jen's
?
Let me start by saying it is so easy that even *I* could do it. That
doesn't mean I know it well enough to teach somebody else. If nobody
else steps up I will work something out with your and we will give it
try. I will learn more about by helping you. I cannot go live online
with you much before this weekend. I am a very busy retiree :)
?
Next...
?
Did you say that you are using the original display? Do you have USB
cables with connectors that will fit your computer at one end and that
small connector on the raduino unit at the other end? I will look at
CEC's site and send you the URL to the file to download. I can do that
*before* the weekend.
?
What operating system do you use? I am on linux but that won't matter. I
will review the Windows or iOS stuff if needed. We should move this to
private email so as not to further clutter the mail list.
?
73,
?
Bill? KU8H
?
On 10/08/2018 01:34 PM, Jens wrote:
> Hi Jack ,
>
> I have studied the internet ...
> Sorry, but now somehow I'm "too stupid" or I think too
complicated
> and it's a lot easier than I think.
> To install the firmware v1.08 of KD8CEC on the uBITX I know
> not which files I need and have to download, also how a source
to
> is to compile and how to proceed with the hex file and the upload to
uBITX.
>
> I am totally confused with these things because I have never done it
and
> after searching and study the internet (KD8CEC) I am now
complete
> confused about
> with the many files, because I do not know what is needed to update
the
> uBITX on v1.08.
>
> Please ... is here someone? who can and wants do the things
together
> with me via TEAMVIEWER online ....
> for the first time so I can learn it ... ???
>
>
> 73 , Jens / HB9JOI
>
?
--
bark less - wag more
?
|
|
Re: uBitx Software Update
... using windoows-10
-----Urspr¨¹ngliche Nachricht----- From: Bill Cromwell Sent: Monday, October 8, 2018 7:56 PM To: [email protected] Subject: Re: [BITX20] uBitx Software Update Hi Jen's Let me start by saying it is so easy that even *I* could do it. That doesn't mean I know it well enough to teach somebody else. If nobody else steps up I will work something out with your and we will give it try. I will learn more about by helping you. I cannot go live online with you much before this weekend. I am a very busy retiree :) Next... Did you say that you are using the original display? Do you have USB cables with connectors that will fit your computer at one end and that small connector on the raduino unit at the other end? I will look at CEC's site and send you the URL to the file to download. I can do that *before* the weekend. What operating system do you use? I am on linux but that won't matter. I will review the Windows or iOS stuff if needed. We should move this to private email so as not to further clutter the mail list. 73, Bill KU8H On 10/08/2018 01:34 PM, Jens wrote: Hi Jack ,-- bark less - wag more |
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Re: uBitx Software Update
¿ªÔÆÌåÓýJack ...
?
I also already checked this internet links , but it always there are so
many things
that a newcomer ¨C like me ... ¨C will never find the correct way and files ,
maybe
also not a step by step instruction for doing the uBITX? FW upgrade
..
?
The only way for me is to get a step by step instruction that I can
follow
and
understand each step ... but all what I find is written for insider who
have basic
experiences and knowledge about Arduino-Nano ... but
I am a complete newcomer ... sorry ... ? The
only thing I have just installed is the ¡°Arduino IDE¡± ¨C software and
the uBITX will detect at COM-8 correct ... next steps ¨C I don`t really know ...
! ? ?
73
, Jens / HB9JOI ? +++ ? From: Jack Purdum via Groups.Io
Sent: Monday, October 8, 2018 7:50 PM
Subject: Re: [BITX20] uBitx Software Update ?
Jens:
?
Using any software that does anything useful looks daunting at first, but
stick with it. I'm pretty sure there has been a discussion here about the exact
steps one needs to do to get the software up and running. Can anyone point to
the post??
?
I just checked ubix.net, a wonderful resource BTW, and it has
several KD8CEC links on the first page. Start looking there.
?
?
Jack, W8TEE
? On Monday, October 8, 2018, 1:34:53 PM EDT, Jens <hb9joi@...>
wrote:
?
?
Hi Jack ,
?
I have studied the internet ...
Sorry, but now somehow I'm "too stupid" or I think too complicated
and it's a lot easier than I think.
To install the firmware v1.08 of KD8CEC on the uBITX I know
not which files I need and have to download, also how a source to
is to compile and how to proceed with the hex file and the upload to
uBITX.
?
I am totally confused with these things because I have never done it
and
after searching and study the internet (KD8CEC) I am now complete confused
about
with the many files, because I do not know what is needed to update the
uBITX on v1.08.
?
Please ... is here someone? who can and wants do the things together
with me via TEAMVIEWER online ....
for the first time so I can learn it ... ???
?
?
73 , Jens / HB9JOI
?
+++
? From: Jack Purdum
via Groups.Io
Sent: Monday, October 8, 2018 2:53 PM
Subject: Re: [BITX20] uBitx Software Update ? Jens:
?
I just googled "How to install the Arduino IDE" and got 5.6 million
hits! I'm sure one of those will be just perfect to get you started. It's
really very simple to do and it will open a new world to you and may become a
new source of enjoyment for our hobby. If you ever get to the point where you
want to start playing around with programming these devices in C, I can suggest
a book for you!? :>)
?
Jack, W8TEE
? On Monday, October 8, 2018, 6:26:38 AM EDT, Jens <hb9joi@...>
wrote:
?
?
Jens ,
?
I am little confused :
?
¡°...The first is to compile the source from the Arduino IDE
....¡°
?
How this is to do ... ???
I have absolutly no sxperiences and knowledge about Arduino-Nano ...
?
73 , Jens /
HB9JOI ? +++ ? From: Jens / DH1AKY
Sent: Sunday, October 7, 2018 9:35 PM
Subject: Re: [BITX20] uBitx Software Update ? Hi Jens, not a problem at all: please look here: Also you find many youtube videos concerning the KD8CEC firmware. Ian also describes how to install on his blog There he provides precompiled hexfiles for easy upload. You don't need the bitx Manager tool at this point. See for installing the firmware. 73 Jens/DH1AKY |
Jim Sheldon
Jens/HB9JOI