Date   
Re: Creating Gerber files for pcb construction

Gordon Gibby <ggibby@...>
 

I don't have the exact number, but one company was about $24 (including shipping) and the other company was $28 (including shipping) --- 5 boards each company. First time customer.

________________________________________
From: BITX20@groups.io <BITX20@groups.io> on behalf of B C <k9wis@...>
Sent: Tuesday, January 23, 2018 4:19 PM
To: BITX20@groups.io
Subject: Re: [BITX20] Creating Gerber files for pcb construction

what did those boards cost you??
Brian K9WIS

---- Gordon Gibby <ggibby@...> wrote:
​Thanks to all your suggestions I made two trial orders:

pcbway.com

jlcpcb.com


About last friday night/saturday.

The first set is supposed to arrive sometime tomorrow (wednesday)

and the other set on Thursday. amazing.


Fingers crossed that I did this correctly!!!


Showed this project to my youngest son (working as a new auto mechanic) and he was motivated to get out the christmas arduino kit I gave him and immediately started building LED circuits....astonishing my wife and me....may help him out in life.




________________________________
From: BITX20@groups.io <BITX20@groups.io> on behalf of Gordon Gibby <ggibby@...>
Sent: Sunday, January 21, 2018 12:09 AM
To: BITX20@groups.io
Subject: Re: [BITX20] Creating Gerber files for pcb construction


Thanks for yet another great suggestion.


I have now created a "flying jumpers" breadboard version using a couple of different resistive bridge designs --- the K6BEZ design driven by the Si5351 directly didn't produce enough voltage to make the reverse measurement accurate and I gave up after several hours on that. Would need to add an amplification stage I believe... The easy swr indicator kit from https://urldefense.proofpoint.com/v2/url?u=http-3A__www.qrpkits.com_ezseries.html-23ezswr&d=DwIFaQ&c=pZJPUDQ3SB9JplYbifm4nt2lEVG5pWx2KikqINpWlZM&r=3ELgZgmTnPzGsfvQxkd1S_2NGLYM8sHTxVCQKFxhVXQ&m=E2shNumHkU2z89FEz9fB1rmv1B9-9CwkXYgBQ56sX18&s=wATr3kl2cd5RzPMIGfxbDzykiABvusgbH-fnLXPAkSA&e=<https://urldefense.proofpoint.com/v2/url?u=http-3A__www.qrpkits.com_ezseries.html-23ezswr&d=DwMFAw&c=pZJPUDQ3SB9JplYbifm4nt2lEVG5pWx2KikqINpWlZM&r=3ELgZgmTnPzGsfvQxkd1S_2NGLYM8sHTxVCQKFxhVXQ&m=McWMTsaWY88BIHjI9RhDX8BXq0BroHl6MaH6P7zGTVo&s=iOg3ff6bkbrqV9BQbMsupWJHkEUhFqFcHTVOepLM0YM&e=> (no LED, just take the rectified voltage and run into an op amp with a gain of about 6) produced a voltage that seemed to work. My circuit is sorta haywire (with egloo jumpers everywhere) and the pcb version would be FAR MORE STABLE but I'm able to measure shorts, 25 ohm, 50 ohm, 100 ohm, 220 ohm and open circuit and get "sorta close SWR" measurements at frequencies up to maybe 30 MHz. There is so much haywiredness to the breadboard that I can't make any better observations at the moment. The PCB should be a ton more mechanically stable. Earlier today I put it on a real antenna and it did find the resonance.


A friend is working on the "single meter" SWR version using a toroidial swr measurement head (which I also have built and should also work). The goal there is to emulate the $129 LDG big meter display of SWR..... The pcb that I cranked out (and now being built in China, fingers crossed!) should work with both. (2 different inputs).


You folks are a lot brighter at this stuff than I am but it has been a ton of fun just getting this much to work! I think this is going to be a great building project for our ARES group.






________________________________
From: BITX20@groups.io <BITX20@groups.io> on behalf of William R Maxwell <wrmaxwell@...>
Sent: Saturday, January 20, 2018 5:02 PM
To: BITX20@groups.io
Subject: Re: [BITX20] Creating Gerber files for pcb construction


Another to consider is www.jlcpcb.com<https://urldefense.proofpoint.com/v2/url?u=http-3A__www.jlcpcb.com&d=DwMF-g&c=pZJPUDQ3SB9JplYbifm4nt2lEVG5pWx2KikqINpWlZM&r=3ELgZgmTnPzGsfvQxkd1S_2NGLYM8sHTxVCQKFxhVXQ&m=IdE0tYxjCfc0L_NPXEC5rll-igwhgt6ppqTzraUYlNc&s=WtrSAHHYrh1yu_YDRixyHaUjQzv0a3Hp9-zY2b8fanM&e=>. I have just received 10 boards for a mere $2 total, including DHL shipping. Note the there is a sixe limit of 100mmx100mm, and two layers, green solder resist and 1.6mm material.

This offer I think is limited to your initial order. A subsequent set of 3 boards, 10 copies each, cost me $29, including shipping.

Bill, VK7MX

On 21/01/2018 12:38 AM, Gordon Gibby wrote:
Wow!!! Thank you for that wonderful tip.

Sent from my iPhone

On Jan 20, 2018, at 06:51, Kerr Smith <kerrsmithusa@...<mailto:kerrsmithusa@...>> wrote:

Have you looked at PCB Shopper? You just set the size of your PCB and how any boards you require and it will list all the main PCB fabrication sites and how much it will cost:

https://urldefense.proofpoint.com/v2/url?u=https-3A__pcbshopper.com&d=DwIFaQ&c=pZJPUDQ3SB9JplYbifm4nt2lEVG5pWx2KikqINpWlZM&r=3ELgZgmTnPzGsfvQxkd1S_2NGLYM8sHTxVCQKFxhVXQ&m=E2shNumHkU2z89FEz9fB1rmv1B9-9CwkXYgBQ56sX18&s=0xNqpq13ii9aT1Sh5iz_prDuqOsArD7fo-GvxVduS2A&e=<https://urldefense.proofpoint.com/v2/url?u=https-3A__pcbshopper.com&d=DwMFaQ&c=pZJPUDQ3SB9JplYbifm4nt2lEVG5pWx2KikqINpWlZM&r=3ELgZgmTnPzGsfvQxkd1S_2NGLYM8sHTxVCQKFxhVXQ&m=tVwyxBAPRZNQpdExa-g1tsq8okRaE7YCQUjWUUW6hMg&s=x1CZZZOSFNIXEjRrVRTlehkNhcaChUif1k7nsMKwx4Q&e=>

For my latest PCBs I tried AllPCB and was extremely pleased with the results, they had an offer on at the time so for $5 I got 7 boards on one order and for my second $5 order I got 17 boards (if your boards are small they seem to add in extra to your order) - they were all shipped using TNT and arrived in just 5 days. At the current time the total cost is $12 for 5 boards up to 35mm x 35mm with free TNT shipping:

https://urldefense.proofpoint.com/v2/url?u=http-3A__www.allpcb.com&d=DwIFaQ&c=pZJPUDQ3SB9JplYbifm4nt2lEVG5pWx2KikqINpWlZM&r=3ELgZgmTnPzGsfvQxkd1S_2NGLYM8sHTxVCQKFxhVXQ&m=E2shNumHkU2z89FEz9fB1rmv1B9-9CwkXYgBQ56sX18&s=XnTdlYHqFlKmjNeCLrFl6eNp9UdCG5Xzx2kDDYXCyOg&e=<https://urldefense.proofpoint.com/v2/url?u=http-3A__www.allpcb.com_setinvite.aspx-3Finviteid-3D30276-26url-3Dhttp-3A__www.allpcb.com_online-5Fquote.html&d=DwMFaQ&c=pZJPUDQ3SB9JplYbifm4nt2lEVG5pWx2KikqINpWlZM&r=3ELgZgmTnPzGsfvQxkd1S_2NGLYM8sHTxVCQKFxhVXQ&m=tVwyxBAPRZNQpdExa-g1tsq8okRaE7YCQUjWUUW6hMg&s=VRALDmdsziyoxueeKz6mXPEvcc6DHC3hcVq_mlvqGIo&e=>

The other site I would recommend is OSHPark:

https://urldefense.proofpoint.com/v2/url?u=https-3A__oshpark.com&d=DwIFaQ&c=pZJPUDQ3SB9JplYbifm4nt2lEVG5pWx2KikqINpWlZM&r=3ELgZgmTnPzGsfvQxkd1S_2NGLYM8sHTxVCQKFxhVXQ&m=E2shNumHkU2z89FEz9fB1rmv1B9-9CwkXYgBQ56sX18&s=z3OHoUEftZQXgilq__PmOkVk9mUQmTqOuH12jAGHT0c&e=<https://urldefense.proofpoint.com/v2/url?u=https-3A__oshpark.com_&d=DwMFaQ&c=pZJPUDQ3SB9JplYbifm4nt2lEVG5pWx2KikqINpWlZM&r=3ELgZgmTnPzGsfvQxkd1S_2NGLYM8sHTxVCQKFxhVXQ&m=tVwyxBAPRZNQpdExa-g1tsq8okRaE7YCQUjWUUW6hMg&s=dqHZt9-lgSwySoNuMqvHedfU_5GT-Uu8usvQgbFEknc&e=>

They are the ones who do the purple PCBs which look really great and also pretty cheap, only a few dollars (around $9.50) for three 35mm x 35mm boards with shipping included.

I am so pleased that the price for creating PCBs yourself is now this low, up until now I have been carefully making my own by etching them but now I can get them in a few days if I need them fast or a couple of weeks if I don't mind waiting. There are so many different fabrication sites there is always going to be a great deal to be had if you shop around a bit, the PCB Shopper site I mentioned above is really great for this.

Oscilloscope for Beginners

Guy N7BIR <sgbridge@...>
 

While on the Circuit Specialists web site I came across this:
Hantek  20 MHz USB Oscilloscope for PC. 
Is this something that could be used for radio troubleshooting? Have never used a scope before and would appreciate your comments. 
73,
Guy N7BIR 

Re: Ubitx case

bill steffey NY9H
 

this looks great , but how do you make a great looking cutout for the display ?????

blank panel for EF01 enclosure .stl #3d_printing

Doug W
 

I just uploaded to the files area an .stl for a blank panel for the banggood EF01 plastic enclosure.  I printed a test one in PLA with 100% fill and it fits and functions quite well.  I left the thinner outer edge the same as the original.  I am tempted to make it a little thicker for a tighter fit but I don't know how much slop it needs to fit every case. 

If you don't already know how to modify this to fit your needs I just use tinkercad.com .  It is not as fancy as a real drafting program but if you work through their tutorials you can be proficient with it in about an hour.  Less if you take to this kind of thing, more if you don't.





Doug
AC9RZ

Re: AE7EU Top Level PCB Mod

Gerry Kavanagh
 

Very tidy work indeed.

uBITX Heatsinks #ubitx

Paul Smith
 

I notice that the bottom edges of the heatsinks are in near contact with a couple of traces (admittedly coated and insulated). But given that the heatsinks are at B+ voltage I have replaced them with different ones and insulated the IRFs too. It wouldn't take much for one of them to rub through the trace coating and send full +ve power where it will cause major pain. Maybe not the case with all boards, and if you have enough of a gap under the heatsinks you could slip insulation under them too. Mine were too tight for that.

Paul ZS2OE

Re: Oscilloscope for Beginners

AC9NM - Jerry Ponko
 

Guy,

IMHO, you'd be better off with the HantekDSO5202P dual channel 200MHz scope they have for $275. I think shipping is free. I bought one a year ago for $300 and it's great. There are a bunch of good reviews of the DSO5202P on youtube. An oscilloscope is one piece of equipment you don''t want to skimp on frequency response wise for rf use.

Jerry AC9NM
 

On Tue, Jan 23, 2018 at 3:45 PM, Guy N7BIR <sgbridge@...> wrote:
While on the Circuit Specialists web site I came across this:
Hantek  20 MHz USB Oscilloscope for PC. 
Is this something that could be used for radio troubleshooting? Have never used a scope before and would appreciate your comments. 
73,
Guy N7BIR 


Re: Oscilloscope for Beginners

Michael Hagen
 

I had one of those.  Got rid of it on eBay.  Did not have very good triggering, with little options.

I comes as is, no support or upgrades for its firmware.  Did not even have AC coupling?  Cheap Digital scopes have problems with aliasing (under sampling) because they do not have fast enough processing.

I have and have had lots of scopes.  Try to get a real scope.  If you can afford it get a modern day Rigol or Siglent.

I got a 4 channel Rigol on eBay barely used for $250.   I jump started it to 100 Mhz.   It is a little small for my eyes, and does way more than you would expect.  I would stick with those 2 manufactures.  Or you could by a TEK or HP used.  You may be working on them?  I have an old HP 1702 or something like that, non digital.  I loved it until the triggering died.  I think it was better than some of my old Teks?

Try to get 100 Mhz 2 channels.  Real Tek and HP probes too, are a bonus, you can use cheap ones for $10 each, most used Tek probes go for big bucks.  There is more bang for the buck in my Rigol DS1054 than I can imagine.  I don't even plug in the others.

PC Scope to me are a pain.   And I would not fall for any of the small dvm hand held scopes, they just are too limited.


By the way, Circuit Specialists had a special late last summer for a few days.  15% off entire order.

I jumped on it and saved a lot on my new Siglent Spectrum Analyser.

Good Luck

73's Mike



On 1/23/2018 1:45 PM, Guy N7BIR wrote:
While on the Circuit Specialists web site I came across this:
Hantek  20 MHz USB Oscilloscope for PC. 
Is this something that could be used for radio troubleshooting? Have never used a scope before and would appreciate your comments. 
73,
Guy N7BIR 

-- 
Mike Hagen, WA6ISP
10917 Bryant Street
Yucaipa, Ca. 92399
(909) 918-0058
PayPal ID  "MotDog@..."
Mike@...

Re: Oscilloscope for Beginners

Peter Luttenbacher
 

Anyone have an opinion on the Siglent SDS1202X-E?  I’ve been leaning towards that one after shopping for a few weeks.

 

 

$379 and Amazon Prime will have it to me in a couple days.  For the price the feature set looks good.

 

Thanks for the Insights.

 

-Peter

 

From: BITX20@groups.io [mailto:BITX20@groups.io] On Behalf Of Michael Hagen
Sent: Tuesday, January 23, 2018 4:28 PM
To: BITX20@groups.io
Subject: Re: [BITX20] Oscilloscope for Beginners

 

I had one of those.  Got rid of it on eBay.  Did not have very good triggering, with little options.

I comes as is, no support or upgrades for its firmware.  Did not even have AC coupling?  Cheap Digital scopes have problems with aliasing (under sampling) because they do not have fast enough processing.

I have and have had lots of scopes.  Try to get a real scope.  If you can afford it get a modern day Rigol or Siglent.

I got a 4 channel Rigol on eBay barely used for $250.   I jump started it to 100 Mhz.   It is a little small for my eyes, and does way more than you would expect.  I would stick with those 2 manufactures.  Or you could by a TEK or HP used.  You may be working on them?  I have an old HP 1702 or something like that, non digital.  I loved it until the triggering died.  I think it was better than some of my old Teks?

Try to get 100 Mhz 2 channels.  Real Tek and HP probes too, are a bonus, you can use cheap ones for $10 each, most used Tek probes go for big bucks.  There is more bang for the buck in my Rigol DS1054 than I can imagine.  I don't even plug in the others.

PC Scope to me are a pain.   And I would not fall for any of the small dvm hand held scopes, they just are too limited.

 

By the way, Circuit Specialists had a special late last summer for a few days.  15% off entire order.

I jumped on it and saved a lot on my new Siglent Spectrum Analyser.

Good Luck

73's Mike

 

 

On 1/23/2018 1:45 PM, Guy N7BIR wrote:

While on the Circuit Specialists web site I came across this:
Hantek  20 MHz USB Oscilloscope for PC. 
Is this something that could be used for radio troubleshooting? Have never used a scope before and would appreciate your comments. 
73,
Guy N7BIR 



-- 
Mike Hagen, WA6ISP
10917 Bryant Street
Yucaipa, Ca. 92399
(909) 918-0058
PayPal ID  "MotDog@..."
Mike@...

Re: Oscilloscope for Beginners

Roy Appleton
 

Get the HantekDSO5202P instead!

Roy
WA0YMH

On Jan 23, 2018 3:45 PM, "Guy N7BIR" <sgbridge@...> wrote:
While on the Circuit Specialists web site I came across this:
Hantek  20 MHz USB Oscilloscope for PC. 
Is this something that could be used for radio troubleshooting? Have never used a scope before and would appreciate your comments. 
73,
Guy N7BIR 

Re: Oscilloscope for Beginners

Thomas Sharka
 

If you don't have a lot of cash, you can go the used route. A decent dual trace 100Mhz scope can be found on eblah for 100 bucks or more. Stick to the name brands like Tektronix or HP. See if the seller is a bulk seller, your chances are better for finding a scope that was part of a surplus buy that might have been sitting on a shelf, literally unused and re-calibrated on a regular schedule.

Unless you really, really want that DSO and are willing to eat beans for a few months...
 


Sent from Yahoo Mail. Get the app


On Tuesday, January 23, 2018 5:27 PM, AC9NM <jponko@...> wrote:


Guy,

IMHO, you'd be better off with the HantekDSO5202P dual channel 200MHz scope they have for $275. I think shipping is free. I bought one a year ago for $300 and it's great. There are a bunch of good reviews of the DSO5202P on youtube. An oscilloscope is one piece of equipment you don''t want to skimp on frequency response wise for rf use.

Jerry AC9NM
 

On Tue, Jan 23, 2018 at 3:45 PM, Guy N7BIR <sgbridge@...> wrote:
While on the Circuit Specialists web site I came across this:
Hantek  20 MHz USB Oscilloscope for PC. 
Is this something that could be used for radio troubleshooting? Have never used a scope before and would appreciate your comments. 
73,
Guy N7BIR 



Re: blank panel for EF01 enclosure .stl #3d_printing

Arvo W0VRA
 

I would pay for a front panel with cutouts for the stock µB.

Re: blank panel for EF01 enclosure .stl #3d_printing

Arvo W0VRA
 

I mean for the EF01.

Re: Oscilloscope for Beginners

V Zecchinelli
 

It's only 20Mhz but would have some application.  I have been using one for years in robotics industry and has worked flawlessly for me.
Vince N1VIN


On 1/23/2018 4:45 PM, Guy N7BIR wrote:
While on the Circuit Specialists web site I came across this:
Hantek  20 MHz USB Oscilloscope for PC. 
Is this something that could be used for radio troubleshooting? Have never used a scope before and would appreciate your comments. 
73,
Guy N7BIR 

Re: Oscilloscope for Beginners

John Backo
 

For RF use, I should think the absolute minimum bandwidth would be
60 MHz, 100 or 200 MHz is much better.

The 20 MHz scope is used mainly in audio work -- it is not very useful for RF.

The suggestions above are good ones. I'm afraid you have to bite the bullet
a bit on this one...

john
AD5YE

Re: Oscilloscope for Beginners

KD8CGH
 

Peter
  I have a Siglent SDS 1202X-E that I got on big sale last year at Dayton/Xenia. I like it a lot. I've used the FFT function as a spectrum analyzer as often as looking a signal vs time traces. With an inexpensive white noise generator you can check the response of all those pesky filters you hand wind inductors for. It will take me a long time to explore everything it does.
     Bob  KD8CGH

Re: Oscilloscope for Beginners

Jerry Gaffke
 

If you have $400 to burn, by all means get a good scope.
Maybe John will loan you the money.  ;-)
But that 20mhz $60 USB scope would be a good start.
Good enough to work on a Bitx40,
though the 45mhz first IF of the uBitx would be beyond reach.

I've looked hard at what it would take to create a decent hobbyist scope on a budget,
the current crop of USB scopes would be hard to beat. 
GigaSample/sec ADC's aren't cheap, and you probably want an FPGA in there too.
Plus the front end analog stuff, and lots of software to support it all.

Perhaps a 1ghz sampling head per Houtman:  http://www.redrok.com/sampscope.htm
feeding the 12bit ADC's of an Arduino Zero clone.
Though a sampling scope is not a friendly tool for beginners.

I think the best bet for the hobbyist is perhaps a slow cheap USB scope (perhaps using Arduino Zero ADC's)
plus something along the lines of Farhan's specan:  http://hfsignals.blogspot.com/p/specan-reboot-of-w7zoi.html
A low end spectrum analyzer could be cheaper than a scope covering the same frequencies,
and for radio work would be more informative.

Jerry, KE7ER 


On Tue, Jan 23, 2018 at 03:24 pm, John Backo wrote:
For RF use, I should think the absolute minimum bandwidth would be
60 MHz, 100 or 200 MHz is much better.

On-Off Switch on Volume Control will not turn on. #parts

Carl Beck
 

Where can I order a new Volume Control/On-Off Switch?

Re: On-Off Switch on Volume Control will not turn on. #parts

Thomas Sharka
 

On Tuesday, January 23, 2018 7:37 PM, Carl Beck <carl@...> wrote:


Where can I order a new Volume Control/On-Off Switch?


Re: Oscilloscope for Beginners

bill
 

Almost all of the test gear I have I purchased at flea markets, classified ads or ebay and I have been really happy with the results. If you are willing to be patient, choose carefully and do a little research, you can find a good Tektronix 100MHz dual trace scope on ebay or at a hamfest for less than 200USD. I bought a Tek 475A 250MHZ two channel scope, with Tek scope probes, for $125 at a ham fest.  If you want new gear, and you have the budget, look at Rigol or Siglent digital scopes. They are field upgradable, lightweight, and a good feature/cost. I've used the Rigol scope a lot. You can start with a Hantek but if you do very much RF equipment building or troubleshooting, you are likely to find using a PC-based measurement tool to be a pain.

On the research part... go find the eevblog forum. There are lots and lots of posts on buying used gear, stuff to look for, stuff to avoid, and a lot of folks that spend a lot of time buying, restoring and using old test gear.  For me, this stuff is almost as much fun as building new gear.  Good luck!