#sbitx Upgrades shipped
#sBitx
The upgrades were shipped last Friday, I am told.
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Re: Daylight again schematic error(?)
Barry, The 1K resistor? at the input of the RX mixer provides the correct termination for the bandpass filter. The bandpass filter is terminated with 1K on the mixer side and 50 ohms on the other side. If you sweep it with a nanovna which provides 50 ohms on both ends, the plot is bound to show much loss as the ending resonator is loaded down. As I had stressed in my talk, we let go of the 50 ohms standard to simply things. This is one of those gotchas.
On Thu, Sep 8, 2022, 5:37 AM barry halterman < kthreebo@...> wrote: Group, I believe there is an error in the schematic of the daylight again radio. The RX first mixer has the PTO going to the gate with the high impedance input, while the RF input is going to the gate with the 1K resistor.?
I think they need to be reversed.?
The band pass filter should be terminated into a high impedance and not low impedance. A low impedance termination will degrade the filter and the sensitivity becomes poor. This is what I have experienced in this build after many hours of tinkering.
Plots of the filter show about 10db loss when terminated into 50 ohms. I have not done plots with a higher termination impedance. In my build, flipping the two signals improved the performance dramatically. I have not increased the PTO gate termination resistor from 1K to a higher value. The PTO signal measured 3.4Vp-p with the 1K.
All in all, the receiver sounds pretty darn good!!
73
Barry
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Daylight again schematic error(?)
Group, I believe there is an error in the schematic of the daylight again radio. The RX first mixer has the PTO going to the gate with the high impedance input, while the RF input is going to the gate with the 1K resistor.?
I think they need to be reversed.?
The band pass filter should be terminated into a high impedance and not low impedance. A low impedance termination will degrade the filter and the sensitivity becomes poor. This is what I have experienced in this build after many hours of tinkering.
Plots of the filter show about 10db loss when terminated into 50 ohms. I have not done plots with a higher termination impedance. In my build, flipping the two signals improved the performance dramatically. I have not increased the PTO gate termination resistor from 1K to a higher value. The PTO signal measured 3.4Vp-p with the 1K.
All in all, the receiver sounds pretty darn good!!
73
Barry
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Thanks, Allen! ?I just finished working a trial for the physics test tomorrow. Will have to compare my answers to the students to see if I got it right!! I think I bit off a little too much this year... amazingly, the sixth grade students are dying to learn Morse code and I found a person who can take that over for me, ?to free me up for other courses. ?I Showed the students the sBitx but it went right over their heads...., reasonable for sixth graders but still they¡¯ll remember it
Gordon
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On Sep 7, 2022, at 18:09, Allen Hill via groups.io <Allenanalog1@...> wrote:
? Gordon, I want to thank you for all you do for Amateur Radio. You are a busy man and I hope you continue to be. I always appreciate your insights and inputs. Keep it up!
73
Allen Hill
KI4QCK
On September 7, 2022, at 4:46 PM, Gordon Gibby <docvacuumtubes@...> wrote:
This was a project from a good bit ago, (April 2021) ?but here¡¯s the link to the shared project on . Pcbway.con
I checked that out just now and apparently there is a button there where you can download the Gerbers yourself. That scares a lot of people away because they¡¯re not quite sure how to deal with them but making the project a shared project on their website made it duck super simple for any group to build this. ? I seen there have been 370 views, but I bet only a handful, if any , have ever built it. ? It looks like I might get a pittance from it but as far as I know I¡¯ve never gotten anything. Take the Gerbers and have them made somewhere else so you don¡¯t ever give me a penny, please! ? I have paid as much as $50 a board elsewhere!!?
I¡¯m amazed at people like Ashhar who are willing to deal with the amateur radio community and provide experimental products. ? Not my cup of tea!
73?
Gordon Gibby Kx4z? ?
JIm, I agree with your points and also agree with Gordons, too.
I would suggest if you can buy them for $5 from china, thats pretty cheap on the price.
And if you can bundle them into a nice price, you could buy a boatload and resell them to other hams and make some nice money. Im a tight budgeted ham who would probably either dig into my junk box . I try not to buy every? new board that comes out on the market unless its revolutional to my setup.HI HI.I can only afford so much on my fixed income. Just depends on which path we each travel down.
Also, if Gordon is releasing the gerbers and such for free, WOW. Any tech stuff thats free is great.
Anyway see you both on the bands.
By the way, My wife says IM THE ORIGINAL GRUMPY MAN .hi hi
73 David ac9xh
On Wednesday, September 7, 2022 at 02:14:15 PM EDT, Gordon Gibby < docvacuumtubes@...> wrote:
Dear self-described grumpy old man!
What a hoot! ?I think you missed a few details?
I don¡¯t make these boards at all.?
I don¡¯t sell them either - so maybe that¡¯s why I don¡¯t advertise a price???
If you want these boards you¡¯ll have to go to and order them from them! ?(I¡¯m not crazy enough to get into the business of selling boards, I retired from being a physician and now I teach AP courses for chicken feed, for the joy of helping youngsters¡ª it¡¯s great fun. A lot of work too!! I have to create two exams by tomorrow
I¡¯m pretty sure that has a really attractive price for five or 10 boards and that may be what you found, but I really don¡¯t know because it¡¯s been a good time since I ordered from them. ?I bet you can find the Gerbers because I probably made those available for free also, and thus you could have these boards made in the United States for 10 times that price. ?Or you could photo resist and make them yourself. ? Or it¡¯s a simple enough project that you could just make it on any kind of perfboard
But I¡¯m sorry that you were upset that I made the Gerbers and the project available for free,.... and that you might need to join with a few other folks to take advantage of volume pricing from commercial vendors. ? ? ?
I think we ordered maybe 30 boards and have probably built 2/3 of them already to protect a slew of expensive gear here in the United States, probably well exceeding $125,000. ? Most of it not even ours! We did it to protect the gear of our county.
what a hoot! I hope you have a great day, A little humor at our own selves in our own foibles goes a long way
Gordon? ?Gordon,
I clicked through all the stuff to see about getting a PCB for the reverse voltage protection device.
After a few pages, I was disappointed to see an asking price of USD$28 and change. ?Really???
A couple of points. ?First, anybody offering anything for sale online NEEDS to show the price on the first landing page. ?It's an unfortunate and objectionable trend for sellers not to do that, and personally I think it stinks, especially when I could get this PCB made in China for $5 each or less in small quantities -- like, USD$28 would pay for at least half a dozen, delivered.
Next, if something is going to cost an arm and a leg, you really ought to say so up front. ?Not all of us are millionaires these days.
This little board is an ingenious product, but if it costs nearly as much as the expensive equipment it's supposed to protect, what's the point of anybody buying it? ?We can just blow up our good stuff and replace it, if the protection circuitry costs more than what's being protected.
File me as "Grumpy Old Man". ?Thank you.
Jim N6OTQ
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Gordon, I want to thank you for all you do for Amateur Radio. You are a busy man and I hope you continue to be. I always appreciate your insights and inputs. Keep it up!
73
Allen Hill
KI4QCK
On September 7, 2022, at 4:46 PM, Gordon Gibby <docvacuumtubes@...> wrote: This was a project from a good bit ago, (April 2021) ?but here¡¯s the link to the shared project on . Pcbway.con
I checked that out just now and apparently there is a button there where you can download the Gerbers yourself. That scares a lot of people away because they¡¯re not quite sure how to deal with them but making the project a shared project on their website made it duck super simple for any group to build this. ? I seen there have been 370 views, but I bet only a handful, if any , have ever built it. ? It looks like I might get a pittance from it but as far as I know I¡¯ve never gotten anything. Take the Gerbers and have them made somewhere else so you don¡¯t ever give me a penny, please! ? I have paid as much as $50 a board elsewhere!!?
I¡¯m amazed at people like Ashhar who are willing to deal with the amateur radio community and provide experimental products. ? Not my cup of tea!
73?
Gordon Gibby Kx4z? ?
JIm, I agree with your points and also agree with Gordons, too.
I would suggest if you can buy them for $5 from china, thats pretty cheap on the price.
And if you can bundle them into a nice price, you could buy a boatload and resell them to other hams and make some nice money. Im a tight budgeted ham who would probably either dig into my junk box . I try not to buy every? new board that comes out on the market unless its revolutional to my setup.HI HI.I can only afford so much on my fixed income. Just depends on which path we each travel down.
Also, if Gordon is releasing the gerbers and such for free, WOW. Any tech stuff thats free is great.
Anyway see you both on the bands.
By the way, My wife says IM THE ORIGINAL GRUMPY MAN .hi hi
73 David ac9xh
On Wednesday, September 7, 2022 at 02:14:15 PM EDT, Gordon Gibby < docvacuumtubes@...> wrote:
Dear self-described grumpy old man!
What a hoot! ?I think you missed a few details?
I don¡¯t make these boards at all.?
I don¡¯t sell them either - so maybe that¡¯s why I don¡¯t advertise a price???
If you want these boards you¡¯ll have to go to and order them from them! ?(I¡¯m not crazy enough to get into the business of selling boards, I retired from being a physician and now I teach AP courses for chicken feed, for the joy of helping youngsters¡ª it¡¯s great fun. A lot of work too!! I have to create two exams by tomorrow
I¡¯m pretty sure that has a really attractive price for five or 10 boards and that may be what you found, but I really don¡¯t know because it¡¯s been a good time since I ordered from them. ?I bet you can find the Gerbers because I probably made those available for free also, and thus you could have these boards made in the United States for 10 times that price. ?Or you could photo resist and make them yourself. ? Or it¡¯s a simple enough project that you could just make it on any kind of perfboard
But I¡¯m sorry that you were upset that I made the Gerbers and the project available for free,.... and that you might need to join with a few other folks to take advantage of volume pricing from commercial vendors. ? ? ?
I think we ordered maybe 30 boards and have probably built 2/3 of them already to protect a slew of expensive gear here in the United States, probably well exceeding $125,000. ? Most of it not even ours! We did it to protect the gear of our county.
what a hoot! I hope you have a great day, A little humor at our own selves in our own foibles goes a long way
Gordon? ?Gordon,
I clicked through all the stuff to see about getting a PCB for the reverse voltage protection device.
After a few pages, I was disappointed to see an asking price of USD$28 and change. ?Really???
A couple of points. ?First, anybody offering anything for sale online NEEDS to show the price on the first landing page. ?It's an unfortunate and objectionable trend for sellers not to do that, and personally I think it stinks, especially when I could get this PCB made in China for $5 each or less in small quantities -- like, USD$28 would pay for at least half a dozen, delivered.
Next, if something is going to cost an arm and a leg, you really ought to say so up front. ?Not all of us are millionaires these days.
This little board is an ingenious product, but if it costs nearly as much as the expensive equipment it's supposed to protect, what's the point of anybody buying it? ?We can just blow up our good stuff and replace it, if the protection circuitry costs more than what's being protected.
File me as "Grumpy Old Man". ?Thank you.
Jim N6OTQ
|
This was a project from a good bit ago, (April 2021) ?but here¡¯s the link to the shared project on . Pcbway.con
I checked that out just now and apparently there is a button there where you can download the Gerbers yourself. That scares a lot of people away because they¡¯re not quite sure how to deal with them but making the project a shared project on their website made it duck super simple for any group to build this. ? I seen there have been 370 views, but I bet only a handful, if any , have ever built it. ? It looks like I might get a pittance from it but as far as I know I¡¯ve never gotten anything. Take the Gerbers and have them made somewhere else so you don¡¯t ever give me a penny, please! ? I have paid as much as $50 a board elsewhere!!?
I¡¯m amazed at people like Ashhar who are willing to deal with the amateur radio community and provide experimental products. ? Not my cup of tea!
73?
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Show quoted text
On Sep 7, 2022, at 15:33, david todd via groups.io <ac9xh@...> wrote:
?
JIm, I agree with your points and also agree with Gordons, too.
I would suggest if you can buy them for $5 from china, thats pretty cheap on the price.
And if you can bundle them into a nice price, you could buy a boatload and resell them to other hams and make some nice money. Im a tight budgeted ham who would probably either dig into my junk box . I try not to buy every? new board that comes out on the market unless its revolutional to my setup.HI HI.I can only afford so much on my fixed income. Just depends on which path we each travel down.
Also, if Gordon is releasing the gerbers and such for free, WOW. Any tech stuff thats free is great.
Anyway see you both on the bands.
By the way, My wife says IM THE ORIGINAL GRUMPY MAN .hi hi
73 David ac9xh
On Wednesday, September 7, 2022 at 02:14:15 PM EDT, Gordon Gibby <docvacuumtubes@...> wrote:
Dear self-described grumpy old man!
What a hoot! ?I think you missed a few details?
I don¡¯t make these boards at all.?
I don¡¯t sell them either - so maybe that¡¯s why I don¡¯t advertise a price???
If you want these boards you¡¯ll have to go to pcbway.com and order them from them! ?(I¡¯m not crazy enough to get into the business of selling boards, I retired from being a physician and now I teach AP courses for chicken feed, for the joy of helping youngsters¡ª it¡¯s great fun. A lot of work too!! I have to create two exams by tomorrow
I¡¯m pretty sure that pcbway.com has a really attractive price for five or 10 boards and that may be what you found, but I really don¡¯t know because it¡¯s been a good time since I ordered from them. ?I bet you can find the Gerbers because I probably made those available for free also, and thus you could have these boards made in the United States for 10 times that price. ?Or you could photo resist and make them yourself. ? Or it¡¯s a simple enough project that you could just make it on any kind of perfboard
But I¡¯m sorry that you were upset that I made the Gerbers and the project available for free,.... and that you might need to join with a few other folks to take advantage of volume pricing from commercial vendors. ? ? ?
I think we ordered maybe 30 boards and have probably built 2/3 of them already to protect a slew of expensive gear here in the United States, probably well exceeding $125,000. ? Most of it not even ours! We did it to protect the gear of our county.
what a hoot! I hope you have a great day, A little humor at our own selves in our own foibles goes a long way
Gordon? On Sep 7, 2022, at 14:02, Jim Strohm <jim.strohm@...> wrote:
?Gordon,
I clicked through all the stuff to see about getting a PCB for the reverse voltage protection device.
After a few pages, I was disappointed to see an asking price of USD$28 and change. ?Really???
A couple of points. ?First, anybody offering anything for sale online NEEDS to show the price on the first landing page. ?It's an unfortunate and objectionable trend for sellers not to do that, and personally I think it stinks, especially when I could get this PCB made in China for $5 each or less in small quantities -- like, USD$28 would pay for at least half a dozen, delivered.
Next, if something is going to cost an arm and a leg, you really ought to say so up front. ?Not all of us are millionaires these days.
This little board is an ingenious product, but if it costs nearly as much as the expensive equipment it's supposed to protect, what's the point of anybody buying it? ?We can just blow up our good stuff and replace it, if the protection circuitry costs more than what's being protected.
File me as "Grumpy Old Man". ?Thank you.
Jim N6OTQ
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Re: Loss of CW Side tone When load N8ME Firmware.uBITX V6
Chuck,
What happens when you select the straight key in the configuration, select CW,? and use the mic PTT to key CW?
73
Evan
AC9TU
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Re: #sbitx - an ugprade kit is on the way
#sBitx
I am not really worried because the buck converter is about 5€ and one irf24 from Infineon is about 0.5€ If I buy from a standard distributor in Germany, so postage for Ashar is probably more expensive than that.? Vy73 de Rolf, DL8BAG currently away from my sBitx #66
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Am 07.09.2022 um 18:20 schrieb Stephen KO4CVU <goinfishin1952@...>:
?I am worried too, I have sBITX s/n #0052 but haven't received an upgrade kit for it yet.
--
Stephen, KO4CVU
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JIm, I agree with your points and also agree with Gordons, too.
I would suggest if you can buy them for $5 from china, thats pretty cheap on the price.
And if you can bundle them into a nice price, you could buy a boatload and resell them to other hams and make some nice money. Im a tight budgeted ham who would probably either dig into my junk box . I try not to buy every? new board that comes out on the market unless its revolutional to my setup.HI HI.I can only afford so much on my fixed income. Just depends on which path we each travel down.
Also, if Gordon is releasing the gerbers and such for free, WOW. Any tech stuff thats free is great.
Anyway see you both on the bands.
By the way, My wife says IM THE ORIGINAL GRUMPY MAN .hi hi
73 David ac9xh
On Wednesday, September 7, 2022 at 02:14:15 PM EDT, Gordon Gibby <docvacuumtubes@...> wrote:
Dear self-described grumpy old man!
What a hoot! ?I think you missed a few details?
I don¡¯t make these boards at all.?
I don¡¯t sell them either - so maybe that¡¯s why I don¡¯t advertise a price???
If you want these boards you¡¯ll have to go to pcbway.com and order them from them! ?(I¡¯m not crazy enough to get into the business of selling boards, I retired from being a physician and now I teach AP courses for chicken feed, for the joy of helping youngsters¡ª it¡¯s great fun. A lot of work too!! I have to create two exams by tomorrow
I¡¯m pretty sure that pcbway.com has a really attractive price for five or 10 boards and that may be what you found, but I really don¡¯t know because it¡¯s been a good time since I ordered from them. ?I bet you can find the Gerbers because I probably made those available for free also, and thus you could have these boards made in the United States for 10 times that price. ?Or you could photo resist and make them yourself. ? Or it¡¯s a simple enough project that you could just make it on any kind of perfboard
But I¡¯m sorry that you were upset that I made the Gerbers and the project available for free,.... and that you might need to join with a few other folks to take advantage of volume pricing from commercial vendors. ? ? ?
I think we ordered maybe 30 boards and have probably built 2/3 of them already to protect a slew of expensive gear here in the United States, probably well exceeding $125,000. ? Most of it not even ours! We did it to protect the gear of our county.
what a hoot! I hope you have a great day, A little humor at our own selves in our own foibles goes a long way
Gordon?
On Sep 7, 2022, at 14:02, Jim Strohm <jim.strohm@...> wrote:
?Gordon,
I clicked through all the stuff to see about getting a PCB for the reverse voltage protection device.
After a few pages, I was disappointed to see an asking price of USD$28 and change. ?Really???
A couple of points. ?First, anybody offering anything for sale online NEEDS to show the price on the first landing page. ?It's an unfortunate and objectionable trend for sellers not to do that, and personally I think it stinks, especially when I could get this PCB made in China for $5 each or less in small quantities -- like, USD$28 would pay for at least half a dozen, delivered.
Next, if something is going to cost an arm and a leg, you really ought to say so up front. ?Not all of us are millionaires these days.
This little board is an ingenious product, but if it costs nearly as much as the expensive equipment it's supposed to protect, what's the point of anybody buying it? ?We can just blow up our good stuff and replace it, if the protection circuitry costs more than what's being protected.
File me as "Grumpy Old Man". ?Thank you.
Jim N6OTQ
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Re: Best wishes to our friends in India
I know this is a year late, but i would continue to build it,stockpile it and either take it over to india,and other countries that would appreciate the medical equipment to save lives
73
David
ac9xh
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Re: Loss of CW Side tone When load N8ME Firmware.uBITX V6
Evan I have Two ubitxs and I loaded one with N8ME and one with N8ME with VU3GAO mods and I am getting the same. No side Tone for CW. I sure the CW is Selected I sent used key and my watt /swr meter is show signal out.
73 Chuck
K3CWE
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Hi? Evan,? just compiled and uploaded? the vu3gao mods? firmware, and i? get the same result.. seems to be working ok?
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Re: #sbitx - an ugprade kit is on the way
#sBitx
I am worried too, I have sBITX s/n #0052 but haven't received an upgrade kit for it yet.
--
Stephen, KO4CVU
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Dear self-described grumpy old man!
What a hoot! ?I think you missed a few details?
I don¡¯t make these boards at all.?
I don¡¯t sell them either - so maybe that¡¯s why I don¡¯t advertise a price???
If you want these boards you¡¯ll have to go to pcbway.com and order them from them! ?(I¡¯m not crazy enough to get into the business of selling boards, I retired from being a physician and now I teach AP courses for chicken feed, for the joy of helping youngsters¡ª it¡¯s great fun. A lot of work too!! I have to create two exams by tomorrow
I¡¯m pretty sure that pcbway.com has a really attractive price for five or 10 boards and that may be what you found, but I really don¡¯t know because it¡¯s been a good time since I ordered from them. ?I bet you can find the Gerbers because I probably made those available for free also, and thus you could have these boards made in the United States for 10 times that price. ?Or you could photo resist and make them yourself. ? Or it¡¯s a simple enough project that you could just make it on any kind of perfboard
But I¡¯m sorry that you were upset that I made the Gerbers and the project available for free,.... and that you might need to join with a few other folks to take advantage of volume pricing from commercial vendors. ? ? ?
I think we ordered maybe 30 boards and have probably built 2/3 of them already to protect a slew of expensive gear here in the United States, probably well exceeding $125,000. ? Most of it not even ours! We did it to protect the gear of our county.
what a hoot! I hope you have a great day, A little humor at our own selves in our own foibles goes a long way
Gordon?
toggle quoted message
Show quoted text
On Sep 7, 2022, at 14:02, Jim Strohm <jim.strohm@...> wrote:
?Gordon,
I clicked through all the stuff to see about getting a PCB for the reverse voltage protection device.
After a few pages, I was disappointed to see an asking price of USD$28 and change. ?Really???
A couple of points. ?First, anybody offering anything for sale online NEEDS to show the price on the first landing page. ?It's an unfortunate and objectionable trend for sellers not to do that, and personally I think it stinks, especially when I could get this PCB made in China for $5 each or less in small quantities -- like, USD$28 would pay for at least half a dozen, delivered.
Next, if something is going to cost an arm and a leg, you really ought to say so up front. ?Not all of us are millionaires these days.
This little board is an ingenious product, but if it costs nearly as much as the expensive equipment it's supposed to protect, what's the point of anybody buying it? ?We can just blow up our good stuff and replace it, if the protection circuitry costs more than what's being protected.
File me as "Grumpy Old Man". ?Thank you.
Jim N6OTQ
|
Gordon,
I clicked through all the stuff to see about getting a PCB for the reverse voltage protection device.
After a few pages, I was disappointed to see an asking price of USD$28 and change. ?Really???
A couple of points. ?First, anybody offering anything for sale online NEEDS to show the price on the first landing page. ?It's an unfortunate and objectionable trend for sellers not to do that, and personally I think it stinks, especially when I could get this PCB made in China for $5 each or less in small quantities -- like, USD$28 would pay for at least half a dozen, delivered.
Next, if something is going to cost an arm and a leg, you really ought to say so up front. ?Not all of us are millionaires these days.
This little board is an ingenious product, but if it costs nearly as much as the expensive equipment it's supposed to protect, what's the point of anybody buying it? ?We can just blow up our good stuff and replace it, if the protection circuitry costs more than what's being protected.
File me as "Grumpy Old Man". ?Thank you.
Jim N6OTQ
|
THOUGHT SOMETHING WAS UP,? THANKS EVAN
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Re: #sbitx - an ugprade kit is on the way
#sBitx
It is concerning. If they really were shipped out by USPS last week, some people should be getting them by now, and others would have gotten the upcoming delivery notice if they're signed up for Informed Delivery.
My concern with the upgrade package is that I show no inbound packages in my USPS account at this point, and haven't received anything yet.
--Neil, W2NDG
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Re: Farhan's Analog Again The Daylight Radio
Still looking for the files for the toroids if they're available.? If not, I'll take a shot at making them myself. 73, Dean
KK4DAS
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TKS Howard, have just loaded N8ME firmware ver 0.1..
Have? boot screen which shows 3 lines of data,
1 = band - splt - 200 - finp - rf att
2 = usb? ?- rit? ? - tune - cfg - cw spd
3 = m1 - m2 - m3 - m4 - m5 (am using m1 to save 9996khz RMW )? Moscow frequency reference
top left side of screen =? primary vfo? ? ? ? top right screen = dimmed vfo b.
dont see? anything re the memories? ??
cfg brings up? a selection of hardware/software adjustments no calibration data seen ??
anyone with similar screen ??
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Rolf Schroeder
Shirley Dulcey KE1L