Hi Evan ? Thanks for your reply.? I have checked the voltage form the power supply and it is 12.3 v.? I bypassed the diode in case there was a problem there but still came up with the same result of 3.5ma rather than the 90ma. ? 73 ? Ray ?
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From: [email protected] <[email protected]> On Behalf Of Evan Hand
Sent: Thursday, 9 July 2020 4:01 PM
To: [email protected]
Subject: Re: [BITX20] construction? Ray,
There are 7 2n3904 transistors that should be on in a linear bias plus the LM386 audio amp when in receive.? If you have wired the power correctly (the RED wire is the +12volts to everything EXCEPT the PA)? it should read 90+ma.? I would check your power wiring as a start.? I would also check the power supply to verify that it is providing 12volts.
The readings are without the Raduino connected, per the original wireup instructions.? The PA bias adjustments come later and will add another 200ma + the Raduino current requirements?to the readings.?
My v5 is buried in a case with a 3.5" Nextion screen, AGC, and an outboard audio amp, so it is not easy for me to get to the readings from that board for comparison. As stated in the first paragraph above, you most likely have a power supply/wiring issue.
73
Evan
AC9TU
73
Evan
AC9TU
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Ray,
There are 7 2n3904 transistors that should be on in a linear bias plus the LM386 audio amp when in receive.? If you have wired the power correctly (the RED wire is the +12volts to everything EXCEPT the PA)? it should read 90+ma.? I would check your power wiring as a start.? I would also check the power supply to verify that it is providing 12volts.
The readings are without the Raduino connected, per the original wireup instructions.? The PA bias adjustments come later and will add another 200ma + the Raduino current requirements?to the readings.?
My v5 is buried in a case with a 3.5" Nextion screen, AGC, and an outboard audio amp, so it is not easy for me to get to the readings from that board for comparison. As stated in the first paragraph above, you most likely have a power supply/wiring issue.
73
Evan
AC9TU
73
Evan
AC9TU
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That's what it should read when the finals have had their bias adjusted iirc
On Thu, 9 Jul. 2020, 10:28 am , < vk3jh@...> wrote: Hi I purchased a V5 last year and am only now starting to put it together. I have wired up the DC power plug as per the instructions and the instructions tell me if I apply 12v it should draw between 90 and 110 ma.? Mine draws 3.5ma. Can anyone give me some clues.? Many thanks.
Ray? VK3JH
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Yeah, I don't know what bloat was added, but there's a reason I called out the specific IDE version in the Readme file :)
Reed
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Hi, Ray.
Is the Raduino connected?
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Hi I purchased a V5 last year and am only now starting to put it together. I have wired up the DC power plug as per the instructions and the instructions tell me if I apply 12v it should draw between 90 and 110 ma.? Mine draws 3.5ma. Can anyone give me some clues.? Many thanks.
Ray? VK3JH
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All compiles fine under 1.8.9... the updated libs in 1.8.13 seem to cause bloating...
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What version of Arduino are people using to compile this ?
Thanks!
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Re: D hole plate to fit SO-239 bulkhead hole - SO-239 to BNC conversion
Dale,
Correct save for NOS abounds and also poor quality copies.
Its more be wary and careful.
?
Allison
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No direct email, it goes to bit bucket due address harvesting in groups.IO
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Bob,
Mounting from the back side was only part of a complete mod.? Do only partial
and you get poor result.? Basically for that iteration a half fast fix was not a fix at all.
See the wiki for the fix and wiring plus the code patch to take advantage of it.
Also if you burnt the tracks off that give you head start.
If you still burning off tracks investigate a better tool and or soldering skills.
The Mod I wrote up for V3.?
By V4,? V5, and 6 it was incorporated into the board layout.? We have a Wiki
here for history and knowledge.
Allison
---------------------------------
No direct email, it goes to bit bucket due address harvesting in groups.IO
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Found it,? installed it, and it works great.? Thanks again. -- Lee - N9LO? "I Void Warranties"
?
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Tried to compile this on 1.8.13 and....
"C:\\Program Files (x86)\\Arduino\\hardware\\tools\\avr/bin/avr-size" -A "d:\\tmp\\arduino_build_194091/ubitxv6.ino.elf"
Sketch uses 30754 bytes (100%) of program storage space. Maximum is 30720 bytes.text section exceeds available space in board
?
Global variables use 819 bytes (39%) of dynamic memory, leaving 1229 bytes for local variables. Maximum is 2048 bytes.
.... so close and yet so far. Any ideas for shaving off a few bytes ?
Thx!
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I suggested mounting the relays on the opposite of the board's ground plane as you say back in the days of the V4 and I remember someone trying it. The results from him was it provided no great improvement as far as meeting FCC requirements, at that time.
Please let us know if this does provide an improvement since the board for the V3 and the V4 may not be exactly the same.
This would also mean making sure the four corners of the board are mounted to a metal box, for example, to make sure the ground plane is indeed at an effective ground for the RF signals and possibly ensure a better overall ground.
Bob ¡ª KK5R
On Wednesday, July 8, 2020, 2:50:31 PM EDT, Mark - N7EKU <n7eku@...> wrote:
Hi Ken,
I did Alison's changes for the relays on my v3.? It might work well for you, as with the relays mounted on the bottom side, their pins all end up on the top side where most of the traces are.? I can upload pictures of my board if you want.? The work will require changes to the raduino code afterwards.
73,
Mark
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Re: D hole plate to fit SO-239 bulkhead hole - SO-239 to BNC conversion
Hi Allison, While that is still true of type N, ?75 Ohm BNC¡¯s changed over to the same ?diameter center pin as the? 50 Ohm version some time ago. In order to maintain 75 Ohms, the dielectric is configured differently. ? Dale W4OP ?
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From: [email protected] [mailto:[email protected]] On Behalf Of ajparent1/kb1gmx
Sent: Wednesday, July 8, 2020 1:12 PM
To: [email protected]
Subject: Re: [BITX20] D hole plate to fit SO-239 bulkhead hole - SO-239 to BNC conversion ? When I see a 50 ohm BNC receptacle that is unreliable its likely because
someone plugged in a 75 ohm into it and sometime verse visa.
They have different plastic sizing and the center pin and socket are differently
sized.
Same issue for the oddball but occasional 75 ohm type N.
Allison
---------------------------------
No direct email, it goes to bit bucket due address harvesting in groups.IO
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Hi Ken,
I did Alison's changes for the relays on my v3.? It might work well for you, as with the relays mounted on the bottom side, their pins all end up on the top side where most of the traces are.? I can upload pictures of my board if you want.? The work will require changes to the raduino code afterwards.
73,
Mark
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Re: D hole plate to fit SO-239 bulkhead hole - SO-239 to BNC conversion
Ali express you can buy it.
Does anyone know of a source for these?
I used to buy these from Oak Hills Research, however with Marshal Em's passing you can not order from OHR.
It is just a plate with 4 screw holes spaced to match an SO-239 bulkhead fitting and a d-hole in the middle to fit a BNC bulkhead.
There are other ways to handle this conversion but boy does that little plate make it easy. 
--
Which is the latest version
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Re: D hole plate to fit SO-239 bulkhead hole - SO-239 to BNC conversion
When I see a 50 ohm BNC receptacle that is unreliable its likely because
someone plugged in a 75 ohm into it and sometime verse visa.
They have different plastic sizing and the center pin and socket are differently
sized.
Same issue for the oddball but occasional 75 ohm type N.
Allison
---------------------------------
No direct email, it goes to bit bucket due address harvesting in groups.IO
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Re: D hole plate to fit SO-239 bulkhead hole - SO-239 to BNC conversion
Some may not be aware that if you remove the locking ring from a BNC male connector, it will plug into an N connector. Shops sometimes make quick-connect jumpers this way.
On Wednesday, July 8, 2020, 8:51:25 AM EDT, _Dave_ AD0B <davesters@...> wrote:
I have gotten rid of all the BNC connectors. The center pin of a bnc female has tendency to become un reliable.? Perhaps no one else has had this problem.
--
73
Dave
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Tim, I see your kit for uBitX! It looks like I can install it on my v5; not too hard. ?Do I understand correctly that it can be wired to drive the SMeter In the faceplate of my inkits case? If so are instructions included for that?
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Ted
Lee
Bob Lunsford
VISWANATHAN R ELAYIDOM
Kim Cary