Vince is right on this one.
If it's not worth 3 seconds of your time to include a few bytes of context when needed,?
it's certainly not worth 3 minutes of my time to ferret it out.
Nor that of the 1000 other potential readers of this forum.
I simply ignore such posts.
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On Wed, Oct 4, 2017 at 02:49 pm, Dexter N Muir wrote:
A quick 'one-liner' back-and-forth will most likely show within a screen of some previous. I consider it more efficient than 10 MB/GB of previous history - and more effective too, with the time taken to scroll giving pause to think and consider ... :) ?
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Re: Function Button with Allard Munters code (v1.24)
#bitx40help
check the condition of the Fun switch.? Check the switch is actually "normally open" re check for resistance in the open state.? Or replace the switch.?? ?Re-seat the LCD Check where the connection is soldered in at the DDS for solder bridges. (ground) Check the DDS PCB component/wafer connections solder junctions. Maybe check for stray wire on the Tune pot shorting or cat "whiskering"....replace the pot with the kit supplied tune pot.? I've had the blue 10k 10T pot go out already open internally. Early indication is the pot turns roughly towards the end of life.
On Mon, Oct 2, 2017 at 5:04 PM, <robert.m.cox@...> wrote: Hi -?
I have installed amunters code on my newly built Bitx40 and the first thing I wanted to try was to swap out the one-turn 10k pot for a 10-turn 10k pot and to install the function button. The pot itself seems to work properly however when I press the function button I get garbage characters on the screen. I can make out some characters and words but it's mostly unreadable. Has anyone else seen this? I've tried searching through the forum but I can't find anyone else with this issue.
Thanks
-Rob
N4MN
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... and being 50 ohms they match the amps'? z i/o. No toroids there! :)
73 ... Thanks for the link, Jerry.
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FB. Ancel.
You got the real things right.
Good projects page,
john
AD5YE
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Thanks for the Ubitx link, I'll certainly give it a shot and publish the build on my hackaday blog. I've got all the RF instrumentation to tweak it into submission.
Maybe even do a? higher wattage PA driver for it with IRF530s or 520s. I live in the Caribbean where when a hurricane hits you, amateur communication is super critical and no one cares if you're over the regulated power limit as lives depend on it.
Here is my project blog:
--
AncelB, MIT EE6002
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A quick 'one-liner' back-and-forth will most likely show within a screen of some previous. I consider it more efficient than 10 MB/GB of previous history - and more effective too, with the time taken to scroll giving pause to think and consider ... :) I encountered this with my most effective intro to Electronics (pre-1960) being a "Tutor Text" tome that dived back and forth among non-sequential pages for answers and the following info and questions. Page 2 just said "I told you to go to page [x]". An occasional reference/link helps, but Farhan did ask.
73
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No, Dexter got it right this time.
He let me know that I forgot to include some current text, not previous.
Jerry
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On Wed, Oct 4, 2017 at 02:03 pm, Vince Vielhaber wrote:
That's funny, Dex! Jerry doesn't include previous text in his post and you're lost. Yet you do it all the time to us.
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That's funny, Dex! Jerry doesn't include previous text in his post and you're lost. Yet you do it all the time to us.
Vince.
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On 10/04/2017 03:43 PM, Dexter N Muir wrote: Sorry, Jerry, but I'm just lurking here on Groups.io. "This webpage"?
Link please?
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Michigan VHF Corp.
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Re: Function Button with Allard Munters code (v1.24)
#bitx40help
For anyone else that is seeing this problem, I tried isolating power and ground connections to the Raduino and shortening the leads from the main board. I finally decided to try another LCD display. The first one I found was a 4x20 display -- behold that worked! No garbled characters on the display when the function button was pressed. However I noticed that the transistor on the Raduino was extremely hot! I read somewhere that this is because of the backlight on the larger display (or something) and that a trace needs to be cut. Well, I didn't want to cut the trace so I searched around for a 2x16. I found one that worked and I only had to adjust the contrast a little bit (like 1/16 of a turn).?
Anyway, this is for posterity.
73,
-Rob
N4MN
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Thanks for the heads-up, Dexter.
Was a bit too fast hitting send on that one.
This uBitx webpage: ??
Schematic at the bottom.
Shows two transmit LPF's, and assumes even harmonics get nulled out?
sufficiently by an extremely well adjusted push-pull power amplifier.
Very cool when it works, as greatly reduces the parts count.?
But few amateurs would have the spectrum analyzer needed,?
and things might shift around as the PA heats up if you did.
Jerry
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On Wed, Oct 4, 2017 at 12:43 pm, Dexter N Muir wrote:
Sorry, Jerry, but I'm just lurking here on Groups.io. "This webpage"? Link please?
?
?
I'm looking at the uBitx schematic at the bottom of this webpage.
If there's something more recent, I haven't heard about it.
Jerry
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On Wed, Oct 4, 2017 at 11:39 am, Ashhar Farhan wrote:
which circuit are you looking at?
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Sorry, Jerry, but I'm just lurking here on Groups.io. "This webpage"? Link please?
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Re: A bit OT, blame it on W8TEE
Put the spaces[] array definition outside of any function, near the top of the file with the other data definitions, somewhere around line 230.
Jack, W8TEE
From: Mike Bryce <prosolar@...>
To: [email protected]
Sent: Wednesday, October 4, 2017 1:53 PM
Subject: Re: [BITX20] A bit OT, blame it on W8TEE
Jack,
well poop, that'd didn't compile.
Scary thing is I think i understand what you did!
I put the #define statements up with the rest of them.
tried the code in setup, then in the loop
I get this error
'spaces' was not declared in this scope
No white smoke... And that's a good thing
Mike, wb8vge
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I figured that if there were 10000 steps over 5v, and I had a 20mv drop at the wiper, that would equate to 40 steps, so I figured 50 was a good starting point
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I'm looking at the uBitx schematic at the bottom of this webpage.
If there's something more recent, I haven't heard about it.
Jerry
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On Wed, Oct 4, 2017 at 11:39 am, Ashhar Farhan wrote:
which circuit are you looking at?
?
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Hi Allard
It's at 9950 right now, hopefully I'll get a chance to play around some more later today. I have insalled the fine tune button, and it is a huge help!
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which circuit are you looking at?
- f
On Wed, Oct 4, 2017 at 9:25 PM, Jerry Gaffke via Groups.Io <jgaffke@...> wrote: Those output low-pass transmit filters are 50 ohms and symetrical.
You could just borrow a filter design from some other rig that's suitable for 50 Watts of power.
Should be one filter per ham band as is typical. (You can cheat on 60m, 30m, 17m, 12m)
There may be other issues with uBitx documentation.
For example, perhaps some of those resistors in the PA need to be moderately beefy.
You will need tools to sweep that crystal filter and adjust impedances and cap values to suit
your carefully matched crystals.? The bandpass filter at L1,2,3,4 will also need to be carefully tuned.
There is no software yet available for a Raduino to drive it.
But if none of that sounds daunting, go for it.
Jerry, KE7ER
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On Wed, Oct 4, 2017 at 08:07 am, Jerry Gaffke wrote:
You don't want to just copy that uBitx schematic and expect it to work properly.
Still under development.
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Re: A bit OT, blame it on W8TEE
Jack,
well poop, that'd didn't compile.
Scary thing is I think i understand what you did!
I put the #define statements up with the rest of them.
tried the code in setup, then in the loop
I get this error
'spaces' was not declared in this scope
No white smoke... And that's a good thing
Mike, wb8vge
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Re: Multiband bitX40 questions
Greg, The one in the QEX article is obsolete. I have found, and bought, a number of modules on Ebay. Most recently I picked up 3 equipment pulls from the same guy for $6.00 apiece. Any module the puts out the 1 PPS signal is what you want. ? v/r Fred W4JLE ?
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From: [email protected] [mailto:[email protected]] On Behalf Of greggaston@...
Sent: Wednesday, October 4, 2017 10:41
To: [email protected]
Subject: Re: [BITX20] Multiband bitX40 questions ? What GPS engine did you use?? Where can I get one for $6.95?? ?The GPS device listed in the QEX article costs a lot more.? Definitely interested in duplicating this.??
Thanks
Greg
KD4VV
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Those output low-pass transmit filters are 50 ohms and symetrical.
You could just borrow a filter design from some other rig that's suitable for 50 Watts of power.
Should be one filter per ham band as is typical. (You can cheat on 60m, 30m, 17m, 12m)
There may be other issues with uBitx documentation.
For example, perhaps some of those resistors in the PA need to be moderately beefy.
You will need tools to sweep that crystal filter and adjust impedances and cap values to suit
your carefully matched crystals. ?The bandpass filter at L1,2,3,4 will also need to be carefully tuned.
There is no software yet available for a Raduino to drive it.
But if none of that sounds daunting, go for it.
Jerry, KE7ER
?
toggle quoted message
Show quoted text
On Wed, Oct 4, 2017 at 08:07 am, Jerry Gaffke wrote:
You don't want to just copy that uBitx schematic and expect it to work properly.
Still under development.
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Ancel
Rob Cox (N4MN)
Brent Seres/ VE3CUS