Re: D hole plate to fit SO-239 bulkhead hole - SO-239 to BNC conversion
I have had a few work loose and bnc's are the worst because you have to take the enclosure apart to reach inside to hold the backside of the connector to get the cable loose. Fuse holders are the second worst, becuase they're plastic so you can only tighten them so far and when they spin you know your swinging a hot wire around inside the case (generally not a problem but the thought is still there).?
I have stripped a few components, both pots and bnc connectors. Never broken one that I can think of. Not by overtightening at least, but with some of the cheap stuff showing up on the market it is easy to see it happening. I've had some old stuff crumble but I think that was the pot metal deteriorating.?
Tom?
w9kkq
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Re: D hole plate to fit SO-239 bulkhead hole - SO-239 to BNC conversion
I do use lock washers on controls/connectors, like the amatuer radio kits enclosure has all round holes so there is no choice. No big deal, I don't fret about it. It's just that Marshall had such an elegant solution to the problem, it is almost a shame not to use it. It looks good whether the plate is inside the enclosure or outside the enclosure, although I usually like it best inside the enclosure.?  
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Re: D hole plate to fit SO-239 bulkhead hole - SO-239 to BNC conversion
Hi Allison,
I have seen a couple of them in soft aluminum that were mounted in a round hole. I don't who installed them but they worked loose withe repeated plug/unplug cycles. They would turn in the hole and then twisted the wires off inside the radios. I don't recall if there were star washers or lock washers used. Probably not. Aluminum comes in grades and the softer aluminum is not very sturdy for radios that are used in mobile or portable operation.
73,
Bill KU8H
bark less - wag more
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On 7/7/20 7:38 AM, ajparent1/kb1gmx wrote: I do not bother.
I drill a .375" hole and use the locking hardware provided.? Never seen
one fall or jump out of the hole.
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
Hi,
I have been disappointed when a couple of *cheap*, cheap, cheep imported, die-cast, through-hole BNC connectors broke with even modest tightening. Never mind about any kind of "super" tightening. Those broke off. Another one stripped the threads and could not be tightened. All of them went to scrap, some still in their packages. Be careful with those 300 foot-pound torque wrenches and beaker bars! Even the higher quality parts are small.
73,
Bill KU8H
bark less - wag more
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On 7/6/20 11:30 PM, Bob Lunsford via groups.io wrote: Tom, when I worked for the government, we had the D-shaped punches but I never wondered at what price they came to us. $200 I can believe, all things considered. Even $100 is a bone-cruncher for me for something I may use a half-dozen times.
I'll use the star lock washer and use a flat washer under the nut. I will then crank down on the nut and assume the connector will never have to come off. If anyone did this followed by a drop of super glue AFTER super tightening, I'd have to go looking for doubts that it's not coming off. For me, the simplest way to go that works has the most merit.
Bob ¡ª KK5R
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Re: D hole plate to fit SO-239 bulkhead hole - SO-239 to BNC conversion
I do not bother.
I drill a .375" hole and use the locking hardware provided.? Never seen
one fall or jump out of the hole.
Allison
---------------------------------
No direct email, it goes to bit bucket due address harvesting in groups.IO
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Re: plugging mic in causes the ubitx V6 to go into transmit mode
Good work? This is part of being a ham.?
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On Jul 7, 2020, at 00:36, John KG9DK <jab3739@...> wrote:
? Greetings all,? I think I found the problem with the mic.? I took it apart and found at the plug end, where clamp was cutting into the PTT wire.? I am going to repair it tomorrow? by cutting the mic cable off and re solder it and re clamp the mic cable.? I will let you know how it goes may be able to post some photos.? Thanks for all the comments. john kg9dk
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Re: plugging mic in causes the ubitx V6 to go into transmit mode
Greetings all,? I think I found the problem with the mic.? I took it apart and found at the plug end, where clamp was cutting into the PTT wire.? I am going to repair it tomorrow? by cutting the mic cable off and re solder it and re clamp the mic cable.? I will let you know how it goes may be able to post some photos.? Thanks for all the comments. john kg9dk
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Re: D hole plate to fit SO-239 bulkhead hole - SO-239 to BNC conversion
Tom, when I worked for the government, we had the D-shaped punches but I never wondered at what price they came to us. $200 I can believe, all things considered. Even $100 is a bone-cruncher for me for something I may use a half-dozen times.
I'll use the star lock washer and use a flat washer under the nut. I will then crank down on the nut and assume the connector will never have to come off. If anyone did this followed by a drop of super glue AFTER super tightening, I'd have to go looking for doubts that it's not coming off. For me, the simplest way to go that works has the most merit.
Bob ¡ª KK5R
On Monday, July 6, 2020, 10:55:15 PM EDT, flatpickn via groups.io <flatpickn@...> wrote:
Patrick,?
The base on that one is too small. The SO-239 has a plate that is one inch square with the small holes about 3/4" apart.The base on the bnc you show is only about 3/4" square.?
Gary,
That's a good answer. At $6 a pop, ouch. But it's workable. Marshal sold 2 plates and 2 bnc connectors for $7.50. Still not cheap but better than $12 a pair. If I am not wanting to spend time out in the shop (no heat or air) purchasing them as a unit would be the way to go.
I bought a piece of 1" x 1/8" flat bar today. I can cut it up repeatably on the bandsaw. Then build a jig with two fences and a clamp to safely drill the holes on the drill press. Although, filing the D just takes forever. 1/8 aluminum won't be as bad as steel though. I only need three right now but I'll probably make 5.
Thanks to W9THC, he lead me down some search paths where I figured out that a blank Neutric panel might fit. And you can buy them with the d hole already in them. Although, all that I have found on the net so far are made of plastic, but I'll keep looking.
Bob, those knock out punches are nice, but they're too big for what we're talking about. I have a similiar set of Greenlees that I picked up used here and there. The D for a bnc is about 3/8" and 1/4" would be about right if your going to file the D. I did look for D panel punches, they run over $200 new. That means they'll be $100 or better on the used market.
Thanks
Tom?
w9kkq
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Re: plugging mic in causes the ubitx V6 to go into transmit mode
I have no tried it yet but from another V6 user's hint in this forum, I opened the mic case and opened the little hole for the eletret element up to 1/8th-in. I may also replace the eletret with an amplified element if that fix has no merit. I will use the mic case for another mic circuit if all other fixes do not work. there are other things going on circuit-wise with the mic so any mods may require disconnecting everything in the microphone and using the microphone body to house another mic circuit. If nothing else, the mic does look good.
Have others here experienced good things with no or little modification using the mic supplied with the V6 full kit? This would indicate to me that massive rearrangement in the microphone may not be necessary.
Bob ¡ª KK5R
On Monday, July 6, 2020, 10:48:54 PM EDT, Jeff Debes <jeff.debes@...> wrote:
John ,
The shipped Baofeng mics are next to worthless in the context of the V6 rig. There was a thread talking about use of a Pro Com amplified CB mic which provided reliable operation and far better audio vs the Baofeng. I purchased one and it works very ?well.? ?I have since received many reports about its excellent ?audio. ? I¡¯ve worked a number of European stations using the new mic and a simple 20 meter wire vertical ground plane antenna.? Bitx V6 is only about 5-6 watts at 20 meters. I¡¯d recommend setting aside the Baofeng . Best wishes for success in your endeavor.
Jeff AC2JB?
On Jul 6, 2020, at 4:21 PM, Bob Lunsford via groups.io <nocrud222@...> wrote:
?
I was fooled with a plug once that is the same used on the Baofeng microphone until I realized I was not pushing the mic plug in all the way. Quick fix.
Bob ¡ª KK5R
On Monday, July 6, 2020, 3:13:17 PM EDT, Gordon Gibby <docvacuumtubes@...> wrote:
So, start with the basics. Read the voltage on the push to talk pin of the jack, and see what happens to it when you plug that mic in.
If it goes to zero, you are shorting it out somehow.
Proceed methodically and systematically from that point to find out where it got shorted to ground. ?
This is regular old ham radio, a chance to learn and practice techniques of figuring things out
Gordon? On Jul 6, 2020, at 15:06, John KG9DK <jab3739@...> wrote:
?just got my uBitx V6 assembled, been listening to the receiver on 40m ,it seem to be OK.? decided to check transmitter out, when I plug in the Baofeng mic the radio goes into transmit. after doing some searching on the messages I see there are a lot of issues with the mic and transmitter.? any one know of a message number I need to read.? the ones I read lean toward RF in the shack, right now I have a dummy load on, still happens, I do have a long power cord from a linear power supply, 30".? ?I have not done any trouble shooting yet, that is next, I am just hoping to get lucky and some one will post my solution.... I got a feeling it does not work that way.
73's
John kg9dk
--
jeff.debes@...
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Re: D hole plate to fit SO-239 bulkhead hole - SO-239 to BNC conversion
Patrick,?
The base on that one is too small. The SO-239 has a plate that is one inch square with the small holes about 3/4" apart.The base on the bnc you show is only about 3/4" square.?
Gary,
That's a good answer. At $6 a pop, ouch. But it's workable. Marshal sold 2 plates and 2 bnc connectors for $7.50. Still not cheap but better than $12 a pair. If I am not wanting to spend time out in the shop (no heat or air) purchasing them as a unit would be the way to go.
I bought a piece of 1" x 1/8" flat bar today. I can cut it up repeatably on the bandsaw. Then build a jig with two fences and a clamp to safely drill the holes on the drill press. Although, filing the D just takes forever. 1/8 aluminum won't be as bad as steel though. I only need three right now but I'll probably make 5.
Thanks to W9THC, he lead me down some search paths where I figured out that a blank Neutric panel might fit. And you can buy them with the d hole already in them. Although, all that I have found on the net so far are made of plastic, but I'll keep looking.
Bob, those knock out punches are nice, but they're too big for what we're talking about. I have a similiar set of Greenlees that I picked up used here and there. The D for a bnc is about 3/8" and 1/4" would be about right if your going to file the D. I did look for D panel punches, they run over $200 new. That means they'll be $100 or better on the used market.
Thanks
Tom?
w9kkq
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Re: plugging mic in causes the ubitx V6 to go into transmit mode
John ,
The shipped Baofeng mics are next to worthless in the context of the V6 rig. There was a thread talking about use of a Pro Com amplified CB mic which provided reliable operation and far better audio vs the Baofeng. I purchased one and it works very ?well.? ?I have since received many reports about its excellent ?audio. ? I¡¯ve worked a number of European stations using the new mic and a simple 20 meter wire vertical ground plane antenna.? Bitx V6 is only about 5-6 watts at 20 meters. I¡¯d recommend setting aside the Baofeng . Best wishes for success in your endeavor.
Jeff AC2JB?
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On Jul 6, 2020, at 4:21 PM, Bob Lunsford via groups.io <nocrud222@...> wrote:
?
I was fooled with a plug once that is the same used on the Baofeng microphone until I realized I was not pushing the mic plug in all the way. Quick fix.
Bob ¡ª KK5R
On Monday, July 6, 2020, 3:13:17 PM EDT, Gordon Gibby <docvacuumtubes@...> wrote:
So, start with the basics. Read the voltage on the push to talk pin of the jack, and see what happens to it when you plug that mic in.
If it goes to zero, you are shorting it out somehow.
Proceed methodically and systematically from that point to find out where it got shorted to ground. ?
This is regular old ham radio, a chance to learn and practice techniques of figuring things out
Gordon? On Jul 6, 2020, at 15:06, John KG9DK <jab3739@...> wrote:
?just got my uBitx V6 assembled, been listening to the receiver on 40m ,it seem to be OK.? decided to check transmitter out, when I plug in the Baofeng mic the radio goes into transmit. after doing some searching on the messages I see there are a lot of issues with the mic and transmitter.? any one know of a message number I need to read.? the ones I read lean toward RF in the shack, right now I have a dummy load on, still happens, I do have a long power cord from a linear power supply, 30".? ?I have not done any trouble shooting yet, that is next, I am just hoping to get lucky and some one will post my solution.... I got a feeling it does not work that way.
73's
John kg9dk
--
jeff.debes@...
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Re: plugging mic in causes the ubitx V6 to go into transmit mode
John start with your Ohm meter and check ring to sleeve on the mic plug. Don¡¯t just look for a short here look to see if there is any resistance, it should be infinite on the higher scales. If it isn¡¯t it could be pulling the PTT pin low enough to look like a switch closure thus sending it into transmit.
On the plug Tip is mic audio/bias, Ring is PTT, and Sleeve is common/ground for the microphone.
Skip Davis, NC9O
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Re: Adding SOTABEAMS LASERBEAM-VARI Digital Variable Audio f\Filter Module to Your BITX/uBITX
Hi Dennis,
Do you have videos of this in operation or pics of the setup, I purchased one of these DSPs and fancy having a crack at this setup.
Thanks!
Best regards, Peter.
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Re: D hole plate to fit SO-239 bulkhead hole - SO-239 to BNC conversion
The first suggested option was less than $4 which to me is the better way to go UNLESS the flange is hobgobbled and not plated professionally. Seems there is a price to everything, though, an indication of the true value of the Dollar.
Bob ¡ª KK5R
On Monday, July 6, 2020, 5:13:48 PM EDT, Lawrence Galea <9h1avlaw@...> wrote:
On Mon, Jul 6, 2020 at 10:59 PM Bob Lunsford via <nocrud222= [email protected]> wrote:
The hole in the SO-234 flange has to be reamed/drilled out unless you go to small hardware. I have also used screws that were forced into the hole so no nut was necessary.
Many connectors have as many methods of mounting as there are options for making it easier or a more secure mounting. Even pop rivets can be used but this often leaves the possibility of a bad ground connection developing later as was sometimes found on cheap CB SWR/Wattmeters sold years ago. One more thing to keep in mind. I often run a [short] ground jumper from the connector to a good ground but if good/plated star lockwashers are used and if the hardware is adequately tightened, this possibility can be put out of mind.
Bob ¡ª KK5R
On Monday, July 6, 2020, 4:45:45 PM EDT, Rick Green < rtg@...> wrote:
On Mon, 6 Jul 2020, Bob Lunsford via wrote:
>
> At $3.92, it looks like a good deal to me.
>
> BNC Female Chassis Mount Connector - Square
>
? The mounting flange on those is smaller than a SO239, with closer hole
spacing, so the existing mounting holes for the SO239 must be elongated into
radial slots in order to mount the BNC.
? --
Rick Green? N8BJX
We, the People of the United States of America, reject the U.S. Supreme Court's
? Citizens United ruling, and move to amend our Constitution to firmly establish
? that money is not speech, and that human beings, not corporations, are persons
? ? ? ? ? ? ? ? ? ? ? ? entitled to constitutional rights.
??? ??? ???
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The Wiki has pictures, consider a rebuild to the section per Allison's mod. /g/BITX20/wiki/7528Rgds, Gary
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Re: D hole plate to fit SO-239 bulkhead hole - SO-239 to BNC conversion
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On Mon, Jul 6, 2020 at 10:59 PM Bob Lunsford via <nocrud222= [email protected]> wrote:
The hole in the SO-234 flange has to be reamed/drilled out unless you go to small hardware. I have also used screws that were forced into the hole so no nut was necessary.
Many connectors have as many methods of mounting as there are options for making it easier or a more secure mounting. Even pop rivets can be used but this often leaves the possibility of a bad ground connection developing later as was sometimes found on cheap CB SWR/Wattmeters sold years ago. One more thing to keep in mind. I often run a [short] ground jumper from the connector to a good ground but if good/plated star lockwashers are used and if the hardware is adequately tightened, this possibility can be put out of mind.
Bob ¡ª KK5R
On Monday, July 6, 2020, 4:45:45 PM EDT, Rick Green < rtg@...> wrote:
On Mon, 6 Jul 2020, Bob Lunsford via wrote:
>
> At $3.92, it looks like a good deal to me.
>
> BNC Female Chassis Mount Connector - Square
>
? The mounting flange on those is smaller than a SO239, with closer hole
spacing, so the existing mounting holes for the SO239 must be elongated into
radial slots in order to mount the BNC.
? --
Rick Green? N8BJX
We, the People of the United States of America, reject the U.S. Supreme Court's
? Citizens United ruling, and move to amend our Constitution to firmly establish
? that money is not speech, and that human beings, not corporations, are persons
? ? ? ? ? ? ? ? ? ? ? ? entitled to constitutional rights.
??? ??? ???
|
Re: D hole plate to fit SO-239 bulkhead hole - SO-239 to BNC conversion
The hole in the SO-234 flange has to be reamed/drilled out unless you go to small hardware. I have also used screws that were forced into the hole so no nut was necessary.
Many connectors have as many methods of mounting as there are options for making it easier or a more secure mounting. Even pop rivets can be used but this often leaves the possibility of a bad ground connection developing later as was sometimes found on cheap CB SWR/Wattmeters sold years ago. One more thing to keep in mind. I often run a [short] ground jumper from the connector to a good ground but if good/plated star lockwashers are used and if the hardware is adequately tightened, this possibility can be put out of mind.
Bob ¡ª KK5R
On Monday, July 6, 2020, 4:45:45 PM EDT, Rick Green <rtg@...> wrote:
On Mon, 6 Jul 2020, Bob Lunsford via groups.io wrote:
>
> At $3.92, it looks like a good deal to me.
>
> BNC Female Chassis Mount Connector - Square
>
? The mounting flange on those is smaller than a SO239, with closer hole
spacing, so the existing mounting holes for the SO239 must be elongated into
radial slots in order to mount the BNC.
? --
Rick Green? N8BJX
We, the People of the United States of America, reject the U.S. Supreme Court's
? Citizens United ruling, and move to amend our Constitution to firmly establish
? that money is not speech, and that human beings, not corporations, are persons
? ? ? ? ? ? ? ? ? ? ? ? entitled to constitutional rights.
??? ??? ???
|
Re: D hole plate to fit SO-239 bulkhead hole - SO-239 to BNC conversion
On Mon, 6 Jul 2020, Bob Lunsford via groups.io wrote: At $3.92, it looks like a good deal to me.
BNC Female Chassis Mount Connector - Square
The mounting flange on those is smaller than a SO239, with closer hole spacing, so the existing mounting holes for the SO239 must be elongated into radial slots in order to mount the BNC. -- Rick Green N8BJX We, the People of the United States of America, reject the U.S. Supreme Court's Citizens United ruling, and move to amend our Constitution to firmly establish that money is not speech, and that human beings, not corporations, are persons entitled to constitutional rights.
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Re: D hole plate to fit SO-239 bulkhead hole - SO-239 to BNC conversion
Hi Rick,
I drill thin sheet metal clamped to a wooden block that is mounted in a vise. I am not going to slice a finger(s) open. The times I used the nibbler and files to make the D hole there was no room for the flange mount on the pre-existing equipment. It's a real pain doing it that way.
73,
Bill KU8H
bark less - wag more
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On 7/6/20 4:17 PM, Rick Green wrote: If you chose to go the drill route, I highly recommend a 'step drill' for thin sheet metal.? Regular twist drills have a nasty tendency to grab and send the maretial spinning. If your hands survive the encounter, you end up with a ragged hole anyway.
Rather than the single-hole mount BNC, why not just use a square-flange BNC? an adapter plate is only cosmetic, you can file the SO239 mounting holes into four short radial slots and mount the BNC directly.
Rick Green, N8BJX
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Hello all.? I have burnt off the tracks on the relay section of my uBitx V3 (c) through trying to work through illness. I am trying to find a photo of the top and bottom section of the board showing where the tracks are going in order to run jumpers.? Any help appreciated. Thanks
?73s Ken VK2HXX
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John KG9DK
Bob Lunsford
Ken T VK2HXX