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Re: FS: QRP Gear
Jamie Anderson
Guess I missed the U3S... Too slow to check the groups.
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Re: FS: QRP Gear
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Re: Antuino
Hi Farhan,
When will the Antuiono be released through HFSigs.com? Joel N6ALT
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Re: FS: QRP Gear
Now get your car repaired! lol Terry - KB8AMZ Brimfield Twp, OH USA EN91hd Linux User# 412308, Ubuntu User# 34905, PCARS#78, NAQCC#6668, QRP-ARCI#8855, SKCC#14195
On Wed, Jun 5, 2019 at 11:54 AM N8DAH <Dherron@...> wrote:
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Wanted
Martin KM6TCD
Our club is looking for a built, tested, and working transceiver.
Anyone got one they might sell?
km6tcd
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Re: Wanted
Doug W
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Re: FS: QRP Gear
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Re: Wanted
Adrian Chadd
Yeah, hit me up. I'm local to you (east oakland) and can help you get
toggle quoted messageShow quoted text
a HF transceiver. -adrian
On Wed, 5 Jun 2019 at 10:38, Martin KM6TCD <peaceofandalus@...> wrote:
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KD8CEC: Changing the calibration data from within the Nextion GUI
Mark Hatch
Hi,
Is there some special startup code to get to the "pmem" setup page from within the KD8CEC UX on a Nextion? From within the Nextion editor, I can see the page "pmem" and it seems to allow you to update Calibration, BFO, etc. However, it *does* not look like the page is actually accessible (or at least I have not found it yet.) Anybody sorted this out? I am thinking that this page may have been for debugging by ian or was deleted because he recommends using the uBitx Database manager to do the updates? 73 Mark AJ6CU
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Re: Nextion 5/Enhanced for KD8CEC 1.2?
Mark Hatch
Joe,
Do you have the photoshop version of picture 1? The white box in lower left corner (where the spectrum is displayed) appears to be wide by 5-10 pixels. The OCDC in me wants to make the box the same width as the spectrum. If not, I can photoshop it. BTW: Getting close to another update. a couple more screens that need a light touch (mem<->vfo, Control Menu, frequency), and then a sweep to put the home button in a consistent place. 73 Mark
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uBITX v3 Low Output
Hugh Debo
Hello all, I have been reading this group for a while, but have just joined. Thanks for the add. I've been a ham for only a couple of years, so this has been a lesson learned: A couple of weeks ago I was experimenting on JS8 with a new antenna and produced enough common mode current to fry my Raspberry Pi and uBITX. The RPI was replaced as were the finals in the uBITX, but I had only about 1W output. I replaced the finals a second time, but the low output continues. I downloaded the Diagnostic Guide and have measured all the TX Testpoints (Thanks Farhan!). Using a battery at 12.3 VDC to power the uBITX, most Testpoints' measurements showed voltages slightly higher (+ 0.1-0.4 VDC) than the values listed in the Guide. Others showed these differences: Q911-3, Q912-3, Q92-3, Q93-3, & Q96-3 measured 11.9 VDC instead of 10.9 VDC. Q94-2 & Q95-2 measured 12.3 VDC instead of 11.3 VDC. Q94-1 measured 12.3 VDC instead of 3.1 VDC. Q95-1 measured 3.2 VDC instead of 3.3 VDC. U2-1 measured 5.0 VDC instead of 4.2 VDC. U2-3 measured 12.2 VDC instead of 10.9 VDC. I've examined the components leading up to Q94-1 and they all seem externally okay to me. My ohm meter says they are connected from one to the next. Can you all please help me figure this out? I welcome your suggestions! Thx, Hugh WM5J P.S. I've constructed a toroid choke balun!! H
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Re: uBITX v3 Low Output
iz oos
I would check the values of the resistors around Q94
Il 06/giu/2019 04:20, "Hugh Debo via Groups.Io" <hughdebo=rocketmail.com@groups.io> ha scritto:
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Re: Wanted
Balasubramanyan Cp
Dear CLUB MEMBERS/OM/YL, Why not to get uBITX VERSION 5 LSB & CW MULTIBAND 10W QRP from OM Farhan, INDIA ? It is very very very good IN ALL RESPECT !!!!!! 73s. Email bsnvu2yc73s@....
On Wed, Jun 5, 2019 at 8:55 PM Adrian Chadd <adrian@...> wrote: Yeah, hit me up. I'm local to you (east oakland) and can help you get
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Re: uBITX v3 Low Output
Evan Hand
I would check C261. It may have shorted. That is the only way I can see to get 12v on pin 1 of Q94.
note: you can replace the SMT with through hole devices if you bend the leads right, and are careful when soldering. FWIW, good luck and good hunting:) 73 Evan AC9TU
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Re: Wanted
Curt
Here I am thinking what does finding a XYZ transceiver in California (I presume for Field Day !) have to do with 'the price of tea in India' -- wait we have many folk here who live in India !
Everyone needs to remember this is a global list, for a fine global rig experience. We bridge cultures - so let's not impose our 'western perspective' on everyone. Those of us in the USA and Europe etc. are blessed to be 'invited' to participate in having (and modifying) one of these fine rigs. 73 Curt
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24 volt
Hi, got my BITX40 working and all looking good. Looking at doing some improving and read the final stage can be driven from 24 volt to give more transmission power. It also looked at changing the heat-sink, as more power will produce more heat. I do not have much room for another heat-sink, so I thought I'd add a fan.
Now the problem I have is the size of the fan. I found a nice PC cooling fan, only some 30mm square, trouble is on fitting it was very noisy., possibly as its a brush less one. Still like the idea of a fan, so can anyone offer tips on how to remove the rf noise it makes, or where i can get a better fan of a similar size? Many thanks Vaughn
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Re: 24 volt
Jonas Sanamon
Hi Vaughn, The rule of thumb is: The smaller the fan, the noisier it is. If You're short on room for bigger heat sink, is it not possible to lead the heat to the box? Best Regards, Jonas - SM4VEY Den tors 6 juni 2019 kl 16:57 skrev Vaughn <vlkteach@...>:
Hi, got my BITX40 working and all looking good. Looking at doing some improving and read the final stage can be driven from 24 volt to give more transmission power. It also looked at changing the heat-sink, as more power will produce more heat. I do not have much room for another heat-sink, so I thought I'd add a fan.
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Re: KD8CEC: Changing the calibration data from within the Nextion GUI
Joe Puma
Mark,
toggle quoted messageShow quoted text
Can you use the Config menu, make a hot button somewhere that calls that page? I think there is an empty icon on the config page we can use for that. Joe
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Re: 24 volt
Mark Hatch
Vaughn,
You might want to do some investigation on small linear amps that can be built for under <$100. uBitx.net has some references and there are several choices. There is one designed by a ham that won some price from the ARRL a while back that gets good reviews. (Wish I could remember his call letters - any help here?) Several ham kit suppliers, including the folks that make the cases for the ubitx sell a two board set (amp + filter). You can also get some on ebay for under $20, but you have to put them together. As designed, they are not that great. However, there are several blogs/websites that will help you fix them so they are respectable and on 12v give you between 40-60w (depending on band). Because I like a challenge, I bought the inexpensive one on ebay. Search for DIY Kits 70w SSB Linear HF Power Amplifier for Yaesu Ft-817 Kx3 73 Mark AJ6CU
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Re: KD8CEC: Changing the calibration data from within the Nextion GUI
Mark Hatch
Joe,
I was thinking of doing that. And put a big disclaimer - "Don't play here".... 73 Mark
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