Re: Shaft diameter of potmeter and rotary encoder
Hi Enno
Both 6.0mm
73 Hans G0UPL
On Fri, Nov 3, 2017 at 3:11 PM, Enno Korma <enno.pf5x@...> wrote: Can someone give me the shaft diameters of the encoder and volume potmeter ? Guess it's 6mm but it might be 6.35mm as well. I like to know because I want to order some bigger knobs ...
Thanks in advance !
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Regards/73,
Enno, PF5X
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Regarding the leads to the display, I would suggest using ribbon cable to keep the leads close together. The ones used for floppies and older harddrives is half the spacing as the pin header. Cut a longer piece than you need and splice them a bit longer to spread them out and cut them to the proper length to fit the pin header. Try to keep them together as much as possible. If there's interference you could experiment with further grounding or isolating the display from the case.
The "newer" ATA133 cables has doubled the number of leads and every second wire is grounded. It's possible to implement this tactic with the 0.05" ribbon cables and 0.1" pin headers as well, but would probably be a bit messy (:
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Shaft diameter of potmeter and rotary encoder
Can someone give me the shaft diameters of the encoder and volume potmeter ? Guess it's 6mm but it might be 6.35mm as well. I like to know because I want to order some bigger knobs ...
Thanks in advance !
--
Regards/73,
Enno, PF5X
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Re: Measured U3S power on 2200-160m
Hello Paul,
Perhaps consider getting one of the cheap Fox TCXO's? I use them in
U3S and they work great with GPS from a QLG1. They are a bit fiddly to
solder until you realise they aren't as delicate as they look and you
put four solder blobs on the PCB pads and on the pads of the Fox, then
fuse them together with a hot iron going around all four in
successionm rapidly. I have even used a crude hot air pen (gas
soldering pencil torch with the hot air tip on it) to remove and re-use
one from a dead board. I was amazed it survived the experience but it
was just as good as a new one! 2E0ILY
Thursday, November 2, 2017
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I am pleased to report I finally found time to "finish" my U3S
build. Well, almost. I haven't built the OCXO yet. Truth is, I
probably don't need it anyway since I have the QLG1 and will only be
using this on the low bands mentioned. When I start running QRSS I
will find out soon enough! During the build I asked if anyone had thoughts on T1 for optimized
performance on these bands. There was no feedback. After fiddling
with a bifilar wound core trying to make it lay flat (to accommodate
the OCXO) and look nice I scrapped that and just went with a single
25 turn winding. I've just measured power output at 240 mW on 2200m,
260 mW on 630m, and 350 mW on 160m. I can live with that since I
will be using it to drive an outboard amplifier. My measurements
should be fairly accurate. I used a well calibrated oscilloscope to
measure voltage across a precision 50 ohm load. Since output is
lower on the lower bands, I suspect some optimization could be
done... either by going to the bifilar winding and/or substituting a
core of different material. At the moment I an not inclined to
pursue that. 73,
Paul N1BUG, WI2XTC -- 2E0ILY Best regards, Chris mailto:chris@...
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Best regards, Chris Wilson (2E0ILY)
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Thank you everyone for the replies... I think my original post may have misled some of you. What I was trying to accomplish with my original post was to explain that I was new to building radios, but, what I really wanted to know was: How much interference could be created by mounting the LCD screen off of the main PCB as mentioned in the instruction manual? What type of shielded wire would be needed to negate or cancel the interference? Would the breadboard wire suffice? And if the breadboard wire wouldn't work was there a home-brew shielding solution for this problem? etc.
After viewing some of the other photographs in the Builders gallery I see that at least one other builder used long(er) sections of wire to make the connections between the PCB and LCD module so it must not cause that much interference. Since I have the male to female breadboard cables already I will test the difference between the two mounting options and see if there is a measurable and/or noticeable difference between the two. I will update this post with my findings.
But, first things first - I'm still waiting to get the radio in the mail and get it all put together! (:
Thanks again!
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QRPLabs has the edge over Apple
While QRPLabs with its QCX tranciever and Apple with its IPhone X are both on
long delivery times. QRPLabs' QCX is a mere ?990 cheaper.
Its not just the 'small' producers that have difficultiies in the supply and
demand.
I hate fruit.....
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Re: Toroid winding numbers and measurements
Update: in trying to make T1 for both 30/20m I wound 31,3,3,3 but RX on 10MHz is as good as my commercial rig if not better, so that's OK.
My low pass filter, to open it up for 20m I wound the toroids for 17m or so... but did not change the 30m capacitors so I have twice the capacitance it should.... since I'm going to use this perhaps only on 30m, maybe I better replace those capacitors and.or rewind that if it is affecting output power?
My output power is unclear: on an external watt meter that a friend says is reliable, but is not a QRP watt meter as such, on the 20W range it shows 2.5W out at 13V, but using the internal test RF power digital meter of the QCX shows 5W. At 20V (don't do that for long!) the external watt meter shows 3W whereas it should be around 10W.
So it seems power is a bit low and isn't rising significantly with voltage increase. Would this be due to LPF? In spite of this I had DX QSO's last night without problems. WSPR got me to EA8 from VK.
I guess now it is some experimenting with L1, L2, L3 to see if I can improve output power.
One issue: side tone does not seem to be working well though it was, at present it only comes on at higher volume and then very loud. Will have to check circuit etc is clean.
For an experiment today for those in Europe, if you can listen in the early morning your time, I'm running in CW Beacon mode on 10119.1 kHz once per minute, 25 second long transmission while busy with house chores. Would be interested if you can hear me and do send any RST reports to vk5eee at vkcw.net
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Re: QCX Firmware Upgrade Problem With AVRDUDESS
yes, it supposedly does, I tried it and it did not work.? The IT specialist at work tried to fix it and could not.
Paul K0ZYV
From: Arv Evans <arvid.evans@...>
To: [email protected]
Sent: Thursday, November 2, 2017 2:52 PM
Subject: Re: [QRPLabs] QCX Firmware Upgrade Problem With AVRDUDESS
Doesn't Windows-10 have a "compatibility mode" where it can run specified programs
as Windows-7 even though the OS is really Windows-10?
_._
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Re: QCX Firmware Upgrade Problem With AVRDUDESS
On Thu, Nov 2, 2017 at 01:39 pm, DJ2AG wrote:
I have Win 7 Pro 64 Bit and I can install 32 and 64 bit programs.?
The key here is Windows 7 Pro will allow 32 bit stuff or lower to work. But the common or garden Win 7/64 Home edition will not :-( I'm not sure what heritage AVRDUDESS is, so my thoughts were only offered as theoretical as to whether this might have been the problem. However, what you say about? usbasp on Win 8/10 is perfectly true, in that later versions of Windows only allows signed drivers to be installed. Libusb is not a signed driver. I wrote about it here - Glad I don't have this crap any more since moving to? Linux. Same with FTDI and Prolific chip issues, all gone with Linux, since the Kernel works them all withough all this driver bull^^^^. 73 de Andy
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Re: QCX Firmware Upgrade Problem With AVRDUDESS
I have Win 7 Pro 64 Bit and I can install 32 and 64 bit programs.?
The reason avrdude is not running with usbasp on Win 8/10 is that In these versions Microsoft only allows signed drivers to be installed. Libusb is not a signed driver.
There are instructions in the net describing how to disable signature checks in Windows. I cannot judge if they work, as I don't use Windows Version > 7 and possibly it's not a good idea to disable this function. But for someone without a Linux or WIN ?7 machine this could be a way to go.
Nevertheless under Win 7 I never had a problem when using zadig as described above.
73 de Armin, DJ2AG?
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Re: Ultimate 3 Kit Construction
Thanks for the words of encouragement Hughie. I will give it a go and see how I get on.?
73,
Bob.? M0BOB.
On Thu, 2 Nov 2017 at 08:33, hparkie < h_park@...> wrote: Hello Bob I was sorry to read your e-mail about not having a go at the kit I am 82 and have worn glasses since In was 12 years old Last year I built Softrock transceiver ?using surface mounted components I bought some magnifying glasses on the net and all last winter I had a great time building and testing it, I got it working on receive but not on transmit but who cares I had fun doing it , for this winter I have ordered one of the new kits and am waiting for it to arrive, so have a go at building it you will enjoy it. By the way I am a Plasterer by trade so If I can do it anyone ?can. Good Luck I hope you enjoy it . Hughie G4UME
PS If it does not work you will have had a Winters enjoyment ?out of building it.
Hi there,?
I bought the Ultimate 3 kit and the GPS a few months ago. My eyesight is not as good now that I am aged 60 and if I'm honest, I'm not experienced at making kits.?
I found someone in the UK who assembled all the circuit boards, but he didn't feel he had the necessary experience to link them up and install them in the supplied case.
Does anyone know if there is someone in the UK who could complete this project? Obvious, I am willing to compensate them for their work.?
Thanks and 73,
Bob Adlington.? M0BOB.? Best wishes,
Rob Adlington.
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Re: QCX Firmware Upgrade Problem With AVRDUDESS
Another thought.
Windows 7 comes as 32 bit or 64 bit versions.
The 64 bit version will not allow the INSTALLATION of any 32 bit programs at all.
One work around is to have an already unpacked version of the 32 bit program copied to the hard drive, assuming that
those files are easily copied and transferred.
So the poster who had it working on WIn 7 might have been using the 32 bit version of WIn 7.
WIn 10, is pure 64 bit, so old software is screwed before you start.
It's one reason why I went Linux in the end.
Either there was a better LINUX app, or I used a Windows program in WINE, which often runs better than running it in Windows ;-)
73 de Andy
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Re: QCX Firmware Upgrade Problem With AVRDUDESS
Julian, have you tried using Zadig.?
What programming dongle are you using.??
AVRDUDESS works in windows 10.
I run it on both my laptops running windows 10 and XP.?
Run Zadig which will do all the hard work for you.?
Can you see the device in device manager.?
Don't give up as there's a lot of support to put it right.?
All the best for now, James 2E0MUA
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Doesn't Windows-10 have a "compatibility mode" where it can run specified programs
as Windows-7 even though the OS is really Windows-10?
_._
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Re: QCX Firmware Upgrade Problem With AVRDUDESS
Doesn't Windows-10 have a "compatibility mode" where it can run specified programs
as Windows-7 even though the OS is really Windows-10?
_._
On Thu, Nov 2, 2017 at 11:21 AM, Paul Schumacher via Groups.Io <wnpauls@...> wrote: I found I could not get the programmer to work in Windows 10, it does work nicely in Windows 7.
From: Julian Forsey <julian_forsey@...>
To: [email protected]
Sent: Thursday, November 2, 2017 10:20 AM
Subject: Re: [QRPLabs] QCX Firmware Upgrade Problem With AVRDUDESS
Thanks everyone for trying to help, but I'm going to give in gracefully now, after spending several very frustrating hours trying to get AVERDUDESS to run. I've been renaming libus DLLs right left and centre but to no avail. Perhaps one day I'll get around to learning how to flash Atmel chips, but at the moment I hate computers!
I'll leave it for a while and then buy a pre-programmed chip from the QRP Labs shop.
Best wishes to all.
Julian
G4ETS
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Tnx, Jim
I never thought of ribbon cable. Great idea.
Marc WB2MSC
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On Nov 2, 2017, at 14:12, Jim Kortge <jim.k8iqy@...> wrote:
On 11/2/2017 2:04 PM, Marc Katz wrote:
Is it absolutely necessary to use shielded cable to connect QLG1 to the QCX? I didn't. Used 4-conductor ribbon cable about 18 inches long and it seems to work fine!
It would be easier to crimp on those little XH pins for headers on both units.
Roger that......
thanks, Marc
72,
Jim, K8IQY
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On 11/2/2017 2:04 PM, Marc Katz wrote: Is it absolutely necessary to use shielded cable to connect QLG1 to the QCX? I didn't.? Used 4-conductor ribbon cable about 18 inches long and it seems to work fine!
It would be easier to crimp on those little XH pins for headers on both units.
Roger that......
thanks, Marc
72, Jim, K8IQY
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Is it absolutely necessary to use shielded cable to connect QLG1 to the QCX?
It would be easier to crimp on those little XH pins for headers on both units.
thanks, Marc
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Re: QCX Firmware Upgrade Problem With AVRDUDESS
I found I could not get the programmer to work in Windows 10, it does work nicely in Windows 7.
From: Julian Forsey <julian_forsey@...>
To: [email protected]
Sent: Thursday, November 2, 2017 10:20 AM
Subject: Re: [QRPLabs] QCX Firmware Upgrade Problem With AVRDUDESS
Thanks everyone for trying to help, but I'm going to give in gracefully now, after spending several very frustrating hours trying to get AVERDUDESS to run. I've been renaming libus DLLs right left and centre but to no avail. Perhaps one day I'll get around to learning how to flash Atmel chips, but at the moment I hate computers!
I'll leave it for a while and then buy a pre-programmed chip from the QRP Labs shop.
Best wishes to all.
Julian
G4ETS
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Hey Curt
The T1 looks ok and there is continuity. From the photo in the manual, I couldn¡¯t tell if ¡°sense¡± was correct but wires are going into the correct holes.
I am now receiving some signals after building an impromptu 17m dipole lying on the floor. The sound is a bit raspy.?
The alignment is probably still off. I¡¯ll keep working on it.?
Thanks to you and Michael and all the other brother hams out there.
Marc WB2MSC
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On Oct 31, 2017, at 22:48, Marc Katz < marc.katz.mat@...> wrote: Thanks Curt
Will do and will report back to you
Marc On Oct 31, 2017, at 22:17, wb8yyy via Groups.Io < wb8yyy@...> wrote: Marc
Very carefully look at that 4 winding coil that feeds the receiver, make sure each winding matches the picture. Any that are backwards would mess up the phasing. If alo this looks good, well, check continuity through each winding. Touch pad to pad, don't touch wire, to see if its really connected. The pots not nulling may be an indication of a problem with this coil.? be patient in debug and repair, this is a key matter.? the end result is amazing, worth the toil.
Curt
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Re: QCX Firmware Upgrade Problem With AVRDUDESS
I'm going to give in gracefully now, after spending several very frustrating hours trying to get AVERDUDESS to run. I've been renaming libus DLLs right left and centre but to no avail. Julian, You were asked for more information but I do not see it. Are you using a USBasp? Did you load it's driver? Like on this page Renaming files is not required, you have been reading error messages too literally, they rarely mean what they seem to say. 73 Alan G4ZFQ Perhaps one day I'll get around to learning how to flash Atmel chips, but at the moment I hate computers!
I'll leave it for a while and then buy a pre-programmed chip from the QRP Labs shop.
Best wishes to all.
G4ETS
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Daniel Ekman SA2KNG
Enno Korma, PF5X
John Asmussen
Mike
Jim Kortge, K8IQY