I built the uBitx and have set up on the 20 metres. Can hear?CW and lots of chatter, but have been unable to make a first contact. I tested the PTT mic and the antenna lines seem to be working fine. But it seems like people can not hear me. Any suggestions on troubleshooting my radio's and making my first contact. As a new Ham I have really?been at a loss as to what is wrong with my rig?
I am open to any suggestions or tests I can run to make this rig work.
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Try making a RC filter to the power in of the raduino board, after doing this on mine the clicks were all but gone. its two 1200uH caps and a 12ohm resistor. I wish I could give you a schem but my googling is coming up short...knew I should have saved it, but its just a basic rc filter.?
Another suggestion is found here near the top of the post under "Clicks during tuning"
--
David
?N8DAH
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Re: UBITX Assembly Wiki Page
#ubitx
I don¡¯t know if I did that right or not.? I didn¡¯t see the text I typed come up after I clicked on Save Page. ? Regards. ? Max K 4 O D S. ? I've Never Lost the Wonder. ? Antique Electronics Site: ? ?
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Re: UBITX Assembly Wiki Page
#ubitx
The idea was not original with me but since you ask I will comment on it. ? Regards. ? Max K 4 O D S. ? I've Never Lost the Wonder. ? Antique Electronics Site: ? ?
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Re: UBITX Assemly Wiki Page
#ubitx
For reverse polarity protection I put a 5 amp rectifier in series? from the positive of the power jack and then to both fuses.?? No relay or extra parts needed.? Sure I have a .7 volt drop but I do not think the loss would be noticed to the ear on the receiving end.? There is a lot more loss in just changing bands. -- ????? Lee - N9LO
????
"I Void Warranties"
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Re: UBITX Assembly Wiki Page
#ubitx
Thank you. ? Regards. ? Max K 4 O D S. ? I've Never Lost the Wonder. ? Antique Electronics Site: ? ?
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From: [email protected] [mailto:[email protected]] On Behalf Of K9HZ
Sent: Monday, May 14, 2018 12:24 PM
To: [email protected]
Subject: Re: [BITX20] UBITX Assembly Wiki Page #ubitx? The diagram was a whole lot better than what i did on my phone though! ? Dr.?William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ ? Owner - Operator Big Signal Ranch ¨C K9ZC Staunton, Illinois ? Owner ¨C Operator Villa Grand Piton - J68HZ Soufriere, St. Lucia W.I. Rent it: ? email:??bill@... ?
On May 14, 2018, at 11:59 AM, MAX <max@...> wrote:
Minor details.? Always minor details.? Grin. ? Regards. ? Max K 4 O D S. ? I've Never Lost the Wonder. ? Antique Electronics Site: ? ? ? Except you forgot the switch! ? Dr.?William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ ? Owner - Operator Big Signal Ranch ¨C K9ZC Staunton, Illinois ? Owner ¨C Operator Villa Grand Piton - J68HZ Soufriere, St. Lucia W.I. Rent it: ? email:??bill@... ?
On May 14, 2018, at 7:22 AM, MAX <max@...> wrote:
Someone asked for a better schematic.? Ask and ye shall receive. ? I don¡¯t know how to insert an attachment directly into the text body of the email.? You will have to click on it to open it. ? Regards. ? Max K 4 O D S. ? I've Never Lost the Wonder. ? Antique Electronics Site: ? ? ? That¡¯s the best one yet. ? Regards. ? Max K 4 O D S. ? I've Never Lost the Wonder. ? Antique Electronics Site: ? ? ? There is a really trivial solution to this reversing diode-fuse thing.? My drawing is awful but you get the idea¡? You just need a 50 cent 10A 12V relay.? ? <image002.jpg> ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ ? Owner - Operator Big Signal Ranch ¨C K9ZC Staunton, Illinois ? Owner ¨C Operator Villa Grand Piton ¨C J68HZ Soufriere, St. Lucia W.I. Rent it: Like us on Facebook! ? Moderator ¨C North American QRO Group at Groups.IO. ? email:? bill@... ? ? From: [email protected] [mailto:[email protected]] On Behalf Of Jerry Gaffke via Groups.Io
Sent: Sunday, May 13, 2018 10:08 PM
To: [email protected]
Subject: Re: [BITX20] UBITX Assemly Wiki Page #ubitx ? A search for 'reverse polarity" in this forum shows dozens of hits since the uBitx was released in early Dec.
Here's a few of mine:
??/g/BITX20/message/35353
??/g/BITX20/message/39877
??/g/BITX20/message/44499
I've given up trying to right that particular absurdity.
Unfortunately, we have hundreds of new hams with no fuse (or too big of one)
assuming they are protected when they are not.??
And some of them are bound to be a bit too careless as a result.
?
Jerry
On Sun, May 13, 2018 at 07:23 pm, ajparent1/KB1GMX wrote: One small point.?
If your using diode for reverse polarity protection it is better to place the
fuses BEFORE the diode as then the fuse blows and the diode is less
likely to be fried and also down stream circuits.
Allison
<uBITX Reverse Polarity Protect.gif>
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Re: UBITX Assemly Wiki Page
#ubitx
Very nice documentation.
Does raise a sort loosely related question. If the switch bridging the PA power to the general power is opened, how does the user control PA power. Does it matter if PA power is on all of the time?
The PA power could be controlled by using a 2-pole switch, which has other advantages.
Thanks,
Paul - K2AYZ
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Re: ND6T AGC implementation for uBIT-X
Please post the files,
Thanks,
Paul-K2AYZ
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Hi all, Nice work Tom!, I wonder If this mod to the filter does at some point an impedance mismatch??
There is a way to change center frequency from 200hz to 750hz??
73! De LU1MAW
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Tom,
Just tug your defective meters probe wires holding the probes and do the same at the meter end.
These wires fray and probably that why you got low readings.
Raj
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At 15-05-18, you wrote: PROBLEM SOLVED!
Well, actually two problems... initial problem was with voltmeter... it was providing erroneous readings. Once I swapped to newer voltmeter I was getting better measurements. Second problem was bad solder joint at electret mic end... it seems to be working now....
Thank you for your assistance.
Tom NU9R
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PROBLEM SOLVED!
Well, actually two problems... initial problem was with voltmeter...? it was providing erroneous readings.? Once I swapped to newer voltmeter I was getting better measurements.? ?Second problem was bad solder joint at electret mic end...? ?it seems to be working now....
Thank you for your assistance.
Tom NU9R
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The Q6 is fine.
Now that you have 12.5 on the R66 mic preamp side, you should also get that coltage on one side of R60
as they are connected together.
I suspect a bad solder or a cut track between R60/R66. Check again.
R66 @ 12V end is directly connected to R60 so you should get same voltage.
Raj
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At 15-05-18, you wrote: During PTT I get 1.6V on the emitter, 2.2V on the base and 11V on the collector. I'm getting supply voltage(13VDC) on one side of R66 and 12.5VDC on the side with C64.
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Re: Should we adopt the KD8CEC firmware?
Support? You think the uBITx is supported? This is right off the HFSignals webside as indicates the limit of support: " This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE." And..." If you are interested or building any of the HF Signals¡¯ kits, you can join the BITX20 group by visiting /g/bitx20. That¡¯s the only support we provide. The level of collective wisdom and experience on the Forum is enough to sort out almost any technical problem or question you may have. You will also meet some really great builders on the Forum." Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ Owner - Operator Big Signal Ranch ¨C K9ZC Staunton, Illinois Owner ¨C Operator Villa Grand Piton ¨C J68HZ Soufriere, St. Lucia W.I. Rent it: www.VillaGrandPiton.com Like us on Facebook! Moderator ¨C North American QRO Group at Groups.IO. email: bill@...
-----Original Message----- From: [email protected] [mailto: [email protected]] On Behalf Of W2CTX Sent: Monday, May 14, 2018 11:22 PM To: [email protected]Subject: Re: [BITX20] Should we adopt the KD8CEC firmware? If CEC firmware is selected to be the delivered "base" then you must think about the following two implications: 1. Is Ian willing to support the "base" in the future w.r.t. uBITX production hardware changes? As well as answering all the "newbie" questions about all the options everyone is eluding to? 2. If Ian does not support the "base", then customers will be confused by having CEC as "base" and IAN still supplying CEC firmware that is different. rOn On May 14, 2018 at 11:09 PM K9HZ <bill@...> wrote:
Tim... I think that's where we are today...with the base level, bare bones code shipped from the factory. An increasing number of people are gravitating to the CEC firmware and that gives you an idea of what is desirable in a base-level firmware for the radio. If you really want data on this issue, Arv can set up a poll...and we can vote to see which firmware is being used.
Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ
PJ2/K9HZ
Owner - Operator
Big Signal Ranch ¨C K9ZC
Staunton, Illinois
Owner ¨C Operator
Villa Grand Piton ¨C J68HZ
Soufriere, St. Lucia W.I.
Rent it: www.VillaGrandPiton.com
Like us on Facebook!
Moderator ¨C North American QRO Group at Groups.IO.
email: bill@...
-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Tim
Gorman
Sent: Monday, May 14, 2018 4:42 PM
To: [email protected]
Subject: Re: [BITX20] Should we adopt the KD8CEC firmware?
Think of it this way.
I want to add a Tune item to the menu. The item will send a CW signal and monitor an i2c peripheral for reverse power indication while the CW key is held down.
Do I duplicate the CW transmit functionality in my code in case someone wants to use my code to add the Tune functionality to their program? If I don't do that then it won't work for someone who doesn't operate CW and has deleted the CW function from the software. And the code gets bloated from two different menu items duplicating the same functionality for those that do operate CW.
Or do I wind up having to maintain two versions, one for software that has CW functionality and one for software that doesn't?
It's my opinion that we *need* a base load with a set of common functionality that experimenters can build on. The current software that Ashar provides seems to fit that bill.
If someone wants to load other software then it is up to them to manage all the complexity.
tim ab0wr
On Mon, 14 May 2018 16:38:39 +0000 (UTC) "Jack Purdum via Groups.Io" <jjpurdum@...> wrote:
I think it could be done without too much confusion by using
preprocessor directives. That way, you don't actually mess with the
code; you only change the symbolic constants you wish to affect. For
example, if you don't use CW or CAT, then
#define CWINTERFACE false // Set this to true if you
want to use CW #define CATINTERFACE false // Set this
to true if you wish to use a CAT interface
and so on. The burden of getting everything right then falls on the
programmer, not the user. The user would, however, be responsible
for their own code additions/deletions.
As to how much space this saves will depend upon the programs
kept/deleted and what you mean by "very much program space". For
some users, 50 bytes might be enough to add something they want at
the cost of deleting some existing feature. The answer to that's
really a try-it-and-see answer.
Jack, W8TEE
---
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Re: Should we adopt the KD8CEC firmware?
I haven't looked at Ian's code yet.
But suspect it is plenty readable.
And if it's readable, there's a bunch of people here that could support it.
And I doubt Farhan would ship with it unless he was confident he understood it
and could make his own mods and fixes.
Farhan would be shipping something that is hopefully stable.
And if Ian is so inclined, he will continue adjusting the code to suit his whims.
Now I'm confused, was there somehow a problem with this??
Generally, a few hundred lines of C code is fairly easy to figure out.
Though there are exceptions:
? ?
? ??
Jerry, KE7ER
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On Mon, May 14, 2018 at 09:24 pm, W2CTX wrote:
If CEC firmware is selected to be the delivered "base" then you must think about the following two implications:
1. Is Ian willing to support the "base" in the future w.r.t. uBITX production hardware changes?
As well as answering all the "newbie" questions about all the options everyone is eluding to?
2. If Ian does not support the "base", then customers will be confused by having CEC as "base" and IAN still supplying CEC firmware that is different.
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Re: UBITX Assembly Wiki Page
#ubitx
OK, I _think_ I improve the image a bit. I put the CAD file and the image on the site as well. Accessible from the assembly page.
W7PEA
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During PTT I get 1.6V on the emitter, 2.2V on the base and 11V on the collector.? I'm getting supply voltage(13VDC) on one side of R66 and 12.5VDC on the side with C64.
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On TX there should be large voltage on both side of R66 if not then maybe a relay fault or faulty Q6.
Check all the voltages around Q6.
Raj
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At 15-05-18, you wrote: Yes... the microphone case is ground... blue wire is going to ground and continuity checks good to ground everywhere as best I can tell. Even the metal part of the microphone shows dead short to ground. The purple lead is going to the mic side.
I measure 31 mV on both sides of R60. I get 3 mV on one side of C60 and 31 mV on the other side of C60. The side closest to the connector is 31 mV. Having the mic plugged or not makes no difference. I've measured R60 in the circuit (I know... not always reliable)... it measures 4.68 K Ohms.
There are two mods I've made but shouldn't have any effect. I've installed a DPDT switch for 12VDC input. And, I've installed 40mm fan on the back to keep the heat sync cool. Should have no impact on mic audio at all.
Earlier I was getting 3 mV at the mic element. Suspect bad meter... so, I put a different meter and I'm getting 30 mV. Just for grins I checked the other pins on the mic... I'm getting 5VDC to the ring (PTT). I also checked for AC just in case... no AC on any of the mic pins.
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Re: Should we adopt the KD8CEC firmware?
If CEC firmware is selected to be the delivered "base" then you must think about the following two implications:
1. Is Ian willing to support the "base" in the future w.r.t. uBITX production hardware changes?
As well as answering all the "newbie" questions about all the options everyone is eluding to?
2. If Ian does not support the "base", then customers will be confused by having CEC as "base" and IAN still supplying CEC firmware that is different.
rOn
toggle quoted message
Show quoted text
On May 14, 2018 at 11:09 PM K9HZ <bill@...> wrote:
Tim... I think that's where we are today...with the base level, bare bones code shipped from the factory. An increasing number of people are gravitating to the CEC firmware and that gives you an idea of what is desirable in a base-level firmware for the radio. If you really want data on this issue, Arv can set up a poll...and we can vote to see which firmware is being used.
Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ
Owner - Operator
Big Signal Ranch ¨C K9ZC
Staunton, Illinois
Owner ¨C Operator
Villa Grand Piton ¨C J68HZ
Soufriere, St. Lucia W.I.
Rent it: www.VillaGrandPiton.com
Like us on Facebook!
Moderator ¨C North American QRO Group at Groups.IO.
email: bill@...
-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Tim Gorman
Sent: Monday, May 14, 2018 4:42 PM
To: [email protected]
Subject: Re: [BITX20] Should we adopt the KD8CEC firmware?
Think of it this way.
I want to add a Tune item to the menu. The item will send a CW signal and monitor an i2c peripheral for reverse power indication while the CW key is held down.
Do I duplicate the CW transmit functionality in my code in case someone wants to use my code to add the Tune functionality to their program? If I don't do that then it won't work for someone who doesn't operate CW and has deleted the CW function from the software. And the code gets bloated from two different menu items duplicating the same functionality for those that do operate CW.
Or do I wind up having to maintain two versions, one for software that has CW functionality and one for software that doesn't?
It's my opinion that we *need* a base load with a set of common functionality that experimenters can build on. The current software that Ashar provides seems to fit that bill.
If someone wants to load other software then it is up to them to manage all the complexity.
tim ab0wr
On Mon, 14 May 2018 16:38:39 +0000 (UTC) "Jack Purdum via Groups.Io" <jjpurdum@...> wrote:
I think it could be done without too much confusion by using
preprocessor directives. That way, you don't actually mess with the
code; you only change the symbolic constants you wish to affect. For
example, if you don't use CW or CAT, then
#define CWINTERFACE false // Set this to true if you
want to use CW #define CATINTERFACE false // Set this
to true if you wish to use a CAT interface
and so on. The burden of getting everything right then falls on the
programmer, not the user. The user would, however, be responsible for
their own code additions/deletions.
As to how much space this saves will depend upon the programs
kept/deleted and what you mean by "very much program space". For some
users, 50 bytes might be enough to add something they want at the cost
of deleting some existing feature. The answer to that's really a
try-it-and-see answer.
Jack, W8TEE
---
This email has been checked for viruses by AVG.
|
Re: Should we adopt the KD8CEC firmware?
That is partially correct.? In my keyer code I use the spare pin too.? So converting my code to work with one
pin is not as simple as changing one #define.
rOn
On May 14, 2018 at 11:13 PM John <vk2eta@...> wrote:
Hello Tim,
The keyer input is also defined so your program only need make reference to the defined label (ANALOG_KEYER here), not the hardware pin per say:
From the code:
#define ANALOG_KEYER? ? (A3)
73, John (VK2ETA)
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John VE1JMB
N8DAH
Lee
Paul Galburt - K2AYZ
Alejandro Weber
Raj vu2zap
K9HZ