Re: Broke off screw mounts from screen
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Hey Bob ???
Why "Time to break out that millimeter scale"?
I'm not understanding well ???
The Decimal scales (of which the millimeter scale is a representative)?are the only true scientific and world "standards", your method of measurement, based on reports of anatomical parts of "men" from the distant prehistoric past, remained the only representative of this "Pleistocene Dinosaur"!
Come on, come on .. adapt! the world has gone on light years, if the English have changed, now it's time for you to adapts to the "new" ... leaves your "inchs" to the past and try to enumerate in a little less prehistoric way!
--? IW4AJR Loris
On Fri, Jan 1, 2021 at 01:37 PM, Bob Lunsford wrote:
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If you measure the screws' length with a millimeter scale, you will find there are two sizes, a longer one and a slightly shorter one. Use the shorter one and it will work OK. Just because a screw happens to screw into the thread does not mean it is the right screw.
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The parts list that comes with the radio shows this, there are two screw sizes but of two different length. Time to break out that millimeter scale.
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Bob ¡ª KK5R
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On Friday, January 1, 2021, 5:31:58 AM EST, Gregg <greggahorton@...> wrote:
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I was attaching the screen and the screws weren't sitting flush and the bottom two nuts snapped off as I tightened. Is there anyway to repair? The screen isn't loose but I'd rather those not be snapped.
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Re: Ideas for "bulletproofing" the uBitx
Go on?
it's a French Ham, many idea on his web site.
Easy, it's in English.
cdt
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Re: Ideas for "bulletproofing" the uBitx
Sorry, here an idea for the IRF510 
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Re: Ideas for "bulletproofing" the uBitx
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Re: Broke off screw mounts from screen
If you measure the screws' length with a millimeter scale, you will find there are two sizes, a longer one and a slightly shorter one. Use the shorter one and it will work OK. Just because a screw happens to screw into the thread does not mean it is the right screw.
The parts list that comes with the radio shows this, there are two screw sizes but of two different length. Time to break out that millimeter scale.
Bob ¡ª KK5R
On Friday, January 1, 2021, 5:31:58 AM EST, Gregg <greggahorton@...> wrote:
I was attaching the screen and the screws weren't sitting flush and the bottom two nuts snapped off as I tightened. Is there anyway to repair? The screen isn't loose but I'd rather those not be snapped.
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Broke off screw mounts from screen
I was attaching the screen and the screws weren't sitting flush and the bottom two nuts snapped off as I tightened. Is there anyway to repair? The screen isn't loose but I'd rather those not be snapped.
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Re: Ideas for "bulletproofing" the uBitx
Don¡¯t understand the point.? Why would you want to operate excellent RF transistors designed specifically for the 12-14V mobile world at a higher voltage?? They make all of their power in that range. ? You are correct¡ that most people won¡¯t get much out of replacing IRF devices with the RDs¡? until they blow out a set or two of them.? Then it will start to matter, because the RD devices survive much better under bad circumstances like infinite SWR.? Again, real RF transistors designed for load mismatch tolerance ?(read the app note, load tolerance spec).? Bullet-proof. ? You are also correct that most people won¡¯t spend the time to replace the IRF devices for the RD devices even after they kill a few sets.? They will just keep killing IRF510¡¯s. ?
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From: [email protected] < [email protected]> On Behalf Of Jerry Gaffke via groups.io Sent: Thursday, December 31, 2020 4:43 PM To: [email protected]Subject: Re: [BITX20] Ideas for "bulletproofing" the uBitx ? I mostly jumped in here because I think it important for the many owners of a uBitx
to know that swapping out the IRF510's for RD*'s is by no means necessary.
The stock rig is perfectly fine, and won't go up in smoke with high SWR when operating at 12v.
Have those who have made the change (without a bunch of other mods),
noticed much difference in performance?
I'll go out on a limb here and guess "nope".
Since the RD*'s can't operate much beyond 12v, I doubt a uBitx with RD*'s
is actually all that much more robust.
Jerry, KE7ER -- ¡_. _._
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Re: Contained Power supply
I like to use Anderson Power Poles myself - all my equipment has been converted to that.
I know I can use a bench supply, but does anyone have a good suggestion to one with the barrel already on it?
thanks!
--
Alex Netherton, W5ALX
Buncombe County NC, EM85ro
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Re: Contained Power supply
Gregg
well this is what I am using --
it has an adapter to fit the ft817, and I forget the size of the native connector - check to see if it matches what you use for the ubitx -- I ended up cutting the card to feed a homemade powerpole box (3 pairs).?
I imagine there may be other 3 amp-ish power supplies made for ham radio.? look around an on line ham store, and perhaps cross check other sales sites once you know what you want.? if its a switcher (like this one) make sure it is intended for ham radio - and find an independent review if possible.?
73 curt wb8yyy
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I know I can use a bench supply, but does anyone have a good suggestion to one with the barrel already on it?
thanks!
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Re: Happy new year 2021 ....Champagne.
Happy new year to you all.? Barry K3bo
Gerard
Happy new year. Thanks for guiding us through your homebrew custom ubitx build.
Curt
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Re: Happy new year 2021 ....Champagne.
Gerard
Happy new year. Thanks for guiding us through your homebrew custom ubitx build.
Curt
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Re: Happy new year 2021 ....Champagne.
Excusez-moi, Je sais que le "champagne" vient uniquement de France.
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Re: Happy new year 2021 ....Champagne.
Bonne Ann¨¦e du Texas aussi!?
Mais, mon champagne est espagnol cette ann¨¦e. C'est la vie, je suppose.
73, Gary
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Happy new year 2021 ....Champagne.
The petarts roar, the fireworks illuminate the sky
We here we are in 2021. I wish you a very happy 2021. Especially excellent health in this difficult period.?
Made good qso with your ubitx.
Don¡¯t forget the "French" champagne at midnight.
You are all great on this forum.
Enjoy these good moments of exchange on this forum.
I wish you all the best for 2021.
Happy New Year 2021 to you and your family.
May your wishes be fulfilled
See you soon on this forum.
cdt
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Re: Ideas for "bulletproofing" the uBitx
I mostly jumped in here because I think it important for the many owners of a uBitx
to know that swapping out the IRF510's for RD*'s is by no means necessary.
The stock rig is perfectly fine, and won't go up in smoke with high SWR when operating at 12v.
Have those who have made the change (without a bunch of other mods),
noticed much difference in performance?
I'll go out on a limb here and guess "nope".
Since the RD*'s can't operate much beyond 12v, I doubt a uBitx with RD*'s
is actually all that much more robust.
Jerry, KE7ER
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Moderated
Re: FCC sticks it to amateurs - WARNING USA POLITICS
Arv and all, I probably should not have started this.? Over the years this list has become almost like an online radio club to many, myself included, and it is easy to stray.? I read something that made me angry and I decided to share my frustration.? Here's how the two topics, BITX and this regulatory issue, tie together for me.? For the benefit of those that do not know the history, going back to Farhan's original design one of the goals has always been about getting SSB HF in the hands and ears of those who otherwise could not afford to do so.? Albeit a USA focused connection, seeing the final decision that by not that long of a stretch added $35 to a BITX kit, ?BITX kit or whatever ¡ÞBITX kit Farhan dreams up next will exclude a certain percentage of potential hams from getting started.? That bothered me and I thought it would create an interesting discussion here.? As an aside, I assure those that question my understanding of the legislative and regulatory process in the US I have a significantly greater understanding than a five word subject line conveys.? While not our standard convention, I assumed the warning in my subject would alert those that would be bored or offended.? As to starting a political debate involving poverty, socialism, and what not, while I should have seen it coming that was not my intention. Happy New Year to all, Doug
Wonder what the OP intent was to post this on the BITX20 group?? This group is focused specifically (and loosely) on support for those who have purchased, or are considering purchase of, the BITX20 transceiver from HF Signals and other BITX sources.? It seems that this terribly off-topic post would at best be boring to those outside the US, and could be offensive to some.??
There are many discussion groups that do focus on political arguments, but this is not one of them.
Arv
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Re: Ideas for "bulletproofing" the uBitx
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From: [email protected] < [email protected]> On Behalf Of Jerry Gaffke via groups.io Sent: Thursday, December 31, 2020 2:18 PM To: [email protected]Subject: Re: [BITX20] Ideas for "bulletproofing" the uBitx ? The QRP-labs 10W IRF510 push-pull amp is extremely well behaved.
The raw parts cost for the qrp-labs amp would almost double with RD* parts.
But yes, using the IRF510 does present more of a challenge than the RD* parts.
Jerry, KE7ER
On Thu, Dec 31, 2020 at 11:00 AM, MadRadioModder wrote: So much better behaved than the IRF part amps.
-- ¡_. _._
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Moderated
Re: FCC sticks it to amateurs - WARNING USA POLITICS
Wonder what the OP intent was to post this on the BITX20 group?? This group is focused specifically (and loosely) on support for those who have purchased, or are considering purchase of, the BITX20 transceiver from HF Signals and other BITX sources.? It seems that this terribly off-topic post would at best be boring to those outside the US, and could be offensive to some.??
There are many discussion groups that do focus on political arguments, but this is not one of them.
Arv
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Loris Bollina
Gerard
Bob Lunsford
MadRadioModder
Alex Netherton