Hi Guys
Further to the AM topic, I came across this discussion on the UK Vintage forum on?quasi-synchronous, it relates mailly to Video detection but it still amplitude modulation.
My Ubitx has still not turned up, it was ordered on the 9 Dec, shipped in the 14 Dec went into a bag at the airport a couple of days later, Hmmm
?
Regards David S? G8DJM
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Re: Mics, speech processor?
#ubitx
Jeff,
?Good to hear. I have mine on the slow boat from China.? I'm glad it worked as I suspected it would.?
Thanks again for sharing.
73, Michael KM4OLT
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QRZnow is a clickfarm site that copies articles verbatim, slaps their own ads on and around it, and doesn't give credit or direct further traffic to the original authors (unless mentioned in the original text by the articles original authors)like like Hackaday for just one example of doing it right or mostly right.
I first noticed them when they would scrape Reddit posts (very poorly) on /r/amateurradio. Someone would link to it later and we'd inform people.
QRZnow has very much improved their Search Engine Optimization scores in the last 2 years to the point where they are in the top five results on Google, but they are direct copies of one of the other pages in the Top 5 results. Very annoying when I am trying to learn more but only one article seems to have any info and I have more questions than words to search.
I have to stop using the groups.io mobile post. It butchers my writing any time I slide around the cursor using Gboard keyboard.
73 de Jacob AG7CT
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Yes, it won't be a problem.
--
Ryan Flowers - W7RLF
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While waiting for my uBITx to ship and arrive, I have been trying to get my ducks in a row,,,, finish other projects, clear a space, etc.
Along the way I started collecting links related directly to the uBITx. I have posted them on my wiki at:
I am not trying to be encyclopedic, just enough to be functional. But if you have a link to add please contact me off the list.
Also if you want to duplicate the whole thing somewhere else that is fine too.
Louis w0it also HS0ZGJ
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If it was placed up at the top where someone could edit it easily that would be great! The scan step delay option should be left as is.
73,
Bob N4FV
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Will do, thanks!
Sent from my iPad
toggle quoted message
Show quoted text
On Jan 5, 2018, at 3:13 PM, Vince Vielhaber <vev@...> wrote:
Excellent! Pull the DDS plug from the board and put your scope on it. You should see a square wave around 5 MHZ (or less). If you see that then the raduino is working. If not the nano may be toast if one of the loose wires touched 12v. But one step at a time.
Vince.
On 01/05/2018 04:11 PM, Scott McDonald via Groups.Io wrote:
Thanks Vince yes, but mostly analogue experience with it, S
Sent from my iPad
On Jan 5, 2018, at 3:03 PM, Vince Vielhaber <vev@...> wrote:
Do you have a scope?
Vince.
On 01/05/2018 03:45 PM, Scott McDonald via Groups.Io wrote:
Greetings to the group.
I could please use some advice on troubleshooting my BITX40.
On initial startup, the current draw looked good, but the display
illuminated for a moment with black squares, went blank, and remained
illuminated but with no intelligence - a green screen of (hopefully not)
death as it were.
Tuning affects nothing.
I injected RF at 7.1 mhz to no effect, but when I injected IF signal,
everything seemed good from there.
The red LED on the Raduino board is lit.
I've double checked the wiring. There was no smoke, at least :)
I've checked the HF spectrum and hear nothing from the Arduino/syn board.
I'm pretty familiar with basic RF troubleshooting but just beginning my
Arduino journey so no explanation would be too basic.
Any thoughts? Is it possible the sketch is corrupted and should be
reloaded, or is there a recommended procedure for checking the Arduino
output and general operability? or a simple way to reinitialize things
and see what happens? Or for that matter to check the display for
function other than backlight?
Happily my uBITX is working well.
Thanks for any ideas.
Scott ka9p --
Michigan VHF Corp.
--
Michigan VHF Corp.
|
Re: Customisable panel cutout template for the EF01 project box
#bitx40
It definitely possible. All you need is a voltage divider to a spare analog pin. I'm using the 2nd line on my B40 for relative power out with Pavel's sampler circuit and it displays a bar.
Vince.
toggle quoted message
Show quoted text
On 01/05/2018 04:12 PM, Arv Evans wrote: Vince
One would think that one of the ADC inputs to the Raduino could be used
to measure
supply voltage and a software mod made to display that voltage. I
wonder if anyone
has looked into this?
Arv K7HKL
_._
On Fri, Jan 5, 2018 at 1:38 PM, Vince Vielhaber <vev@...
<mailto:vev@...>> wrote:
On 01/05/2018 12:40 PM, phraxoid wrote:
[snip]
@KD9HLC - It's a seven segment DC voltmeter to show input power
(battery) voltage. Couple of dollars from China via eBay.
Unfortunately
the meter puts out INSANE RF noise and makes the radio entirely
unusable. Probably need to try some copper tape and LC filtering
with it
at some point, but for now it's just disconnected (same goes for
the fan
next to it).
I had the exact same result. I ended up pulling it. It's funny
tho, I have the exact same meter on my bench supply (I bought a few
and one went there) and it's quiet as can be.
Vince.
--
Michigan VHF Corp.
--
Michigan VHF Corp.
|
Thanks Dave, didn¡¯t do that but doesn¡¯t sound good. ?Can you recommend a good quick source for a replacement Nano by any chance?
Per Doug¡¯s suggestion Ill try to reload first but sure Ill find a use for another nano.
toggle quoted message
Show quoted text
On Jan 5, 2018, at 3:05 PM, David Nelson < kc2ipx@...> wrote: I had the same problem.? There are two orange wires. One on 5 pin connector and one on 8 pin connector.? I hooked the one on the 8 pin connector to +12 volts and it should have been the one on the 5 pin connector ?that went to +12 volts. So I wound up with +12 volts on A3 of the nano Which killed the nano. I replaced? the and programed it? and? put the wires in the right place now everything works as supposed to. Lucky I? had a few spare nano's and could program them with no problem. Good luck. Dave? kc2ipx
|
Excellent! Pull the DDS plug from the board and put your scope on it. You should see a square wave around 5 MHZ (or less). If you see that then the raduino is working. If not the nano may be toast if one of the loose wires touched 12v. But one step at a time.
Vince.
toggle quoted message
Show quoted text
On 01/05/2018 04:11 PM, Scott McDonald via Groups.Io wrote: Thanks Vince yes, but mostly analogue experience with it, S
Sent from my iPad
On Jan 5, 2018, at 3:03 PM, Vince Vielhaber <vev@...> wrote:
Do you have a scope?
Vince.
On 01/05/2018 03:45 PM, Scott McDonald via Groups.Io wrote:
Greetings to the group.
I could please use some advice on troubleshooting my BITX40.
On initial startup, the current draw looked good, but the display
illuminated for a moment with black squares, went blank, and remained
illuminated but with no intelligence - a green screen of (hopefully not)
death as it were.
Tuning affects nothing.
I injected RF at 7.1 mhz to no effect, but when I injected IF signal,
everything seemed good from there.
The red LED on the Raduino board is lit.
I've double checked the wiring. There was no smoke, at least :)
I've checked the HF spectrum and hear nothing from the Arduino/syn board.
I'm pretty familiar with basic RF troubleshooting but just beginning my
Arduino journey so no explanation would be too basic.
Any thoughts? Is it possible the sketch is corrupted and should be
reloaded, or is there a recommended procedure for checking the Arduino
output and general operability? or a simple way to reinitialize things
and see what happens? Or for that matter to check the display for
function other than backlight?
Happily my uBITX is working well.
Thanks for any ideas.
Scott ka9p --
Michigan VHF Corp.
--
Michigan VHF Corp.
|
Re: Customisable panel cutout template for the EF01 project box
#bitx40
Vince
One would think that one of the ADC inputs to the Raduino could be used to measure
supply voltage and a software mod made to display that voltage.? I wonder if anyone
has looked into this?
Arv? K7HKL
_._
On Fri, Jan 5, 2018 at 1:38 PM, Vince Vielhaber <vev@...> wrote:
On 01/05/2018 12:40 PM, phraxoid wrote:
[snip]
@KD9HLC - It's a seven segment DC voltmeter to show input power
(battery) voltage. Couple of dollars from China via eBay. Unfortunately
the meter puts out INSANE RF noise and makes the radio entirely
unusable. Probably need to try some copper tape and LC filtering with it
at some point, but for now it's just disconnected (same goes for the fan
next to it).
I had the exact same result.? I ended up pulling it.? It's funny tho, I have the exact same meter on my bench supply (I bought a few and one went there) and it's quiet as can be.
Vince.
--
? Michigan VHF Corp.? ?? ?
? ? ? ? ? ? ? ? ? ? ? ? ?
|
Thanks Vince yes, but mostly analogue experience with it, S
Sent from my iPad
toggle quoted message
Show quoted text
On Jan 5, 2018, at 3:03 PM, Vince Vielhaber <vev@...> wrote:
Do you have a scope?
Vince.
On 01/05/2018 03:45 PM, Scott McDonald via Groups.Io wrote:
Greetings to the group.
I could please use some advice on troubleshooting my BITX40.
On initial startup, the current draw looked good, but the display
illuminated for a moment with black squares, went blank, and remained
illuminated but with no intelligence - a green screen of (hopefully not)
death as it were.
Tuning affects nothing.
I injected RF at 7.1 mhz to no effect, but when I injected IF signal,
everything seemed good from there.
The red LED on the Raduino board is lit.
I've double checked the wiring. There was no smoke, at least :)
I've checked the HF spectrum and hear nothing from the Arduino/syn board.
I'm pretty familiar with basic RF troubleshooting but just beginning my
Arduino journey so no explanation would be too basic.
Any thoughts? Is it possible the sketch is corrupted and should be
reloaded, or is there a recommended procedure for checking the Arduino
output and general operability? or a simple way to reinitialize things
and see what happens? Or for that matter to check the display for
function other than backlight?
Happily my uBITX is working well.
Thanks for any ideas.
Scott ka9p --
Michigan VHF Corp.
|
Re: uBITX woes, feeling disheartened.
#ubitx
Thanks Gordon,
Yes, I should know better... Ill print out a nice large copy of the schematic and have a probe around... but thank for confirming at least that K3 and that area with M1 M2 is likely where the issue is...
Ill, keep you all informed.
73, Nick VK4PLN
|
I had the same problem.? There are two orange wires. One on 5 pin connector and one on 8 pin connector.? I hooked the one on the 8 pin connector to +12 volts and it should have been the one on the 5 pin connector ?that went to +12 volts. So I wound up with +12 volts on A3 of the nano Which killed the nano. I replaced? the and programed it? and? put the wires in the right place now everything works as supposed to. Lucky I? had a few spare nano's and could program them with no problem. Good luck. Dave? kc2ipx
|
Do you have a scope?
Vince.
toggle quoted message
Show quoted text
On 01/05/2018 03:45 PM, Scott McDonald via Groups.Io wrote: Greetings to the group.
I could please use some advice on troubleshooting my BITX40.
On initial startup, the current draw looked good, but the display
illuminated for a moment with black squares, went blank, and remained
illuminated but with no intelligence - a green screen of (hopefully not)
death as it were.
Tuning affects nothing.
I injected RF at 7.1 mhz to no effect, but when I injected IF signal,
everything seemed good from there.
The red LED on the Raduino board is lit.
I've double checked the wiring. There was no smoke, at least :)
I've checked the HF spectrum and hear nothing from the Arduino/syn board.
I'm pretty familiar with basic RF troubleshooting but just beginning my
Arduino journey so no explanation would be too basic.
Any thoughts? Is it possible the sketch is corrupted and should be
reloaded, or is there a recommended procedure for checking the Arduino
output and general operability? or a simple way to reinitialize things
and see what happens? Or for that matter to check the display for
function other than backlight?
Happily my uBITX is working well.
Thanks for any ideas.
Scott ka9p
--
Michigan VHF Corp.
|
Sounds like you may have shorted the magic wire and given the Arduino amnesia.? Try reloading the sketch.? To be safe I would disconnect the Raduino from the BITX when loading the sketch.
|
Greetings to the group.
I could please use some advice on troubleshooting my BITX40.
On initial startup, the current draw looked good, but the display illuminated for a moment with black squares, went blank, and remained illuminated but with no intelligence - a green screen of (hopefully not) death as it were.
Tuning affects nothing.
I injected RF at 7.1 mhz to no effect, but when I injected IF signal, everything seemed good from there.
The red LED on the Raduino board is lit.
I've double checked the wiring. ?There was no smoke, at least :)
I've checked the HF spectrum and hear nothing from the Arduino/syn board.
I'm pretty familiar with basic RF troubleshooting but just beginning my Arduino journey so no explanation would be too basic.
Any thoughts? Is it possible the sketch is corrupted and should be reloaded, or is there a recommended procedure for checking the Arduino output and general operability? ?or a simple way to reinitialize things and see what happens? ?Or for that matter to check the display for function other than backlight?
Happily my uBITX is working well.
Thanks for any ideas.
Scott ka9p
|
Re: uBITX woes, feeling disheartened.
#ubitx
So, there will be an initial pop but it is loud but not unbearable and then I think it quietens a lot quicker than the Bitx40 did (that one took about 2 seconds to completely quieten).? I haven't really noticed it AT ALL
I'm really a fan of having the radio tell you where the problem is, instead of just striking out and checking a whole lotta things....unless there is a really well known fault.? ? It sounds like your relay is staying in, but an easy way to check that is
is to simply put a voltmeter on the collector that I earlier suggested.? I don't know how intimate you are with schematics, but all the parts are marked and there will be additional parts connected to that collector that make it easy to probe its voltage.?
?It should have voltage in RX and not in TX....and then you would be able to move a step back and see if the relay controlling that had voltage to its coil at the proper time and so on......
?The schematic is like anatomy, and your knowledge of electronics is like physiology and the things you measure and observe are symptoms and using all that you can diagnose the problem without a huge amount of guesswork.....
Since you built that high pass filter in nothing flat, you must be pretty good at this, so I don't know why I'm telling you this.
Cheers
gordon
toggle quoted message
Show quoted text
I'm about to go examine K3.
Just to confirm, when in TX there should be NO mic audio at all from the speaker?
If I turn down the vol, initiate TX, then turn up the vol, I can hear any tapping or blowing on the mic from the speaker... It seems to be the initial TX pop the starts of the feedback,?
but yeah, if the Mic is supposed to be completely muted, I have an issue there, as it is not....
73 Nick, VK4PLN
|
Re: Customisable panel cutout template for the EF01 project box
#bitx40
On 01/05/2018 12:40 PM, phraxoid wrote: [snip] @KD9HLC - It's a seven segment DC voltmeter to show input power
(battery) voltage. Couple of dollars from China via eBay. Unfortunately
the meter puts out INSANE RF noise and makes the radio entirely
unusable. Probably need to try some copper tape and LC filtering with it
at some point, but for now it's just disconnected (same goes for the fan
next to it). I had the exact same result. I ended up pulling it. It's funny tho, I have the exact same meter on my bench supply (I bought a few and one went there) and it's quiet as can be. Vince. -- Michigan VHF Corp.
|
Re: uBITX woes, feeling disheartened.
#ubitx
I'm about to go examine K3.
Just to confirm, when in TX there should be NO mic audio at all from the speaker?
If I turn down the vol, initiate TX, then turn up the vol, I can hear any tapping or blowing on the mic from the speaker... It seems to be the initial TX pop the starts of the feedback,?
but yeah, if the Mic is supposed to be completely muted, I have an issue there, as it is not....
73 Nick, VK4PLN
|
Michael Monteith
Nick VK4PP
David Nelson