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Re: compile error
Jack, W8TEE
It would help us figure it out if you pasted the error here, too, and detailed the IDE number, your Op System, and if you copied all of the files into the same directory. Jack, W8TEE
On Thursday, January 9, 2020, 9:57:34 PM EST, Bob Bennett via Groups.Io <bobsmacbox@...> wrote:
Anyone know how to overcome the EEPROM.put (CW_KEY_TYPE_temp_key) error that keeps coming up in my ubitxv6 compile? -- Bob NZ2Z -- Jack, W8TEE |
Relative Power indication on Nextion display
I¡¯m running the basic CEC software (not _S version) using the LM358-based S-meter sensor Ian offered on his site to drive the S-meter function on the Nextion display. To attempt relative power indication, I Incorporated the concept from his ¡°simpler¡± version (without the LM358), tapping off the antenna connector to provide input to the IC to approximate power level.
My hybrid version is producing appropriate output on the A7 line during both receive and transmit. ?However, while the Nextion display works fine during receive, it does not show any indication of the value (on A7) during transmit. ?Does the CEC software turn off the ¡°meter¡± feature during transmit? ?If so, is there a setting to change that, or a compile time declaration to make it active? Thanks. |
Re: New uBITX Ver. 6 Assembled Today
We need a more objective criterion ti assess what is happening. If the local radio ia picking up the modulation then the mic can't be a suspect. If the receiver is working then there is a negligible chance that the ssb tx ia busted. Rememeber that it was shipped working. Can you measure the power supply current? If you can, then measure how much it draws when you shout 'Haaaaaallow' into the mic. The current draw increase on 7mhz should be over 1.5A at peak. I hope you have used a matched antenna. - f On Fri 10 Jan, 2020, 7:06 AM Jerry Gaffke via Groups.Io, <jgaffke=[email protected]> wrote: One trick I've used? is to see how hot a 50 ohm resistor gets, |
Re: New uBITX Ver. 6 Assembled Today
One trick I've used? is to see how hot a 50 ohm resistor gets,
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Compare that to how hot a resistor on a variable voltage DC supply gets, vary the voltage till the heating is about the same then compute watts from V*V/R A diode RF probe is trivial to build, though involves a wee bit more math to interpret properly.. V*V/R = Watts, so V*V=Watts*R, and five watts into 50 ohms is sqrt(Watts*50ohms) = sqrt(5*50) = 15.8 volts rms. If the RF probe is peak reading, you will see 15.8 * 1.414 = 22.4 volts peak into a DC voltmeter. Many RF probe designs include a 4.7meg scaling resistor so it reads rms? on the assumption that the RF is a sine wave and the DVM has an input resistance of around 10meg. Those are some very large assumptions, I prefer to have it honestly tell me the peak voltage. Let's assume a 1n4148 diode has a forward drop of about 0.6 volts, a schottky Bat54s a drop of 0.2 volts. So errors get beyond 10% if below 6v peak for the 1n4148, or (6/1.414)*(6/1.414)/50 = 0.35 Watts. And errors get beyond 10% if below 2v peak for a Bat54s, or (2/1.414)*(2/1.414)/50 = 0.04 Watts. Taking that diode drop into account, the Bat54s can give useful results to well under a milliwatt. If you want an SWR meter that also shows power, consider Diz's $12 Tandem Match kit: ? ?? Item 18:?? If you want a full antenna analyzer, consider the nanoVNA and it's newer variants, as cheap as $40: ? ??/g/nanovna-users/messages?expanded=1 A steep learning curve, but very powerful. Jerry, KE7ER On Thu, Jan 9, 2020 at 01:50 PM, Alex Netherton wrote:
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Re: #v5 Audio, Ground?
#v5
Sounds like your speaker is grounded to the chassis on one terminal and your new configuration requires the other side to be grounded or no ground at all but two separate leads.
Mo On 01/09/20 7:34:02 PM, "Andy_501" <andrew.webb.501.ve4per@...> wrote: Maybe try nylon screws andstandoffs
via my shoephone
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On Jan 9, 2020, at 17:42, Armando Escalante <escalantea@...> wrote:
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Re: Need to Calibrate the V6
#v6
Oooops!? Correction: obviously the BFO and Freq adjustment numbers are stored.? What I should have said was could they be pulled back in and displayed like the other values that are stored in EEPROM.? As far as I can tell they aren't right now or, if they are, the knob is so twitchy that they get changed before my palsied fingers can let go of the knob ...
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Re: #v5 Audio, Ground?
#v5
Andy_501
Maybe try nylon screws andstandoffs
via my shoephone
Sent from
On Jan 9, 2020, at 17:42, Armando Escalante <escalantea@...> wrote:
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Re: New uBITX Ver. 6 Assembled Today
just to throw my own experience in here, I was suspecting the mic was bad too, but I also didn't have a proper low power meter. This morning I found an old power meter with a 10W range and tested again. No power out on SSB. I also find the mic I used with my version 3, and I see about 4 Watts out with a hearty Hallooooo! Into the mic.? I'll take it apart this weekend and see what's up, but I also have 2 of the Pacific Antenna qrpkits mics to assemble and I hear good things about those.? I'll report back.? Sent from my Burroughs B7700 - Neil Goldstein, W2NDG |
#v5 Audio, Ground?
#v5
Odd situation. ? |
Re: uBITX V6.0 For Sale
Ashhar/Hans
hams everywhere are truly blessed to experience fine radios.? all was meant to try to 'redeem' a thread focusing on concerns with the size etc of the uBITX (one can wonder where the term micro comes from?) - so I merely invited him to consider the QSX.? I appreciate the correct path each of you has taken to benefit a vast number of ham ops.? my v4 ubitx and QCX are doing well, ditto for the U3S.? (I hope to finally check how the v4 works with shielded inductors and an added xtal filter, but I may not have spur data for a while - but if the rig works decently I suspect it will be pretty good also with spurious).? those unexpected features on the QSX are quite welcome.? sometimes I get concerned that those of us in the West dominate the list - I have learned wonderful info from Raj and Sunil and others in India and other places.? please everyone, enjoy your building and radiations.? belated happy 2020, Curt wb8yyy |
Re: uBITX V6.0 For Sale
BUT, can you do things like add a new modulation scheme, like FreeDV or other codecs? It seems that would require SDR-level coding, something that couldn't be easily bolted on at the UI level. Would there be a codec "plug-in" interface? 73, -- Dave, N8SBE
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Re: New uBITX Ver. 6 Assembled Today
A good SWR meter can be got from Ebay for not very much. I have never owned an antenna analyzer - a SWR meter works just fine for a lot less. Alex Netherton On Thu, Jan 9, 2020 at 8:34 AM Vaughn <vlkteach@...> wrote:
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Alex Netherton, W5ALX Buncombe County NC, EM85ro |
Re: Need to Calibrate the V6
#v6
Thanks Ashhar, that got it done although I had to find WWV on 5mhz since the 10mhz just wasn't strong here.?
Some thoughts: Would it be possible/reasonable for you to store the BFO and Freq adjustment numbers in EEPROM?? I had to go back and forth from setup to regular operation to finally get the v6 accurately at zero beat and each time the BFO and Freq adjustment numbers would revert to their defaults and I was starting from scratch again.? Also, the tuning speed could be damped down a bit; it seems far too jumpy right now.... |
Re: Need to Calibrate the V6
#v6
Andy_501
I experience similar difficulties with settings and freqs shifting during the button press. But too many miles for me to get a ham/electronic hobbyists candy store as it were hihi.? Only one here was a morphed Radio Shack (aka TheSource) and since Bell Globemedia took it over all the hobbyist candy inventory has been removed; now they just flog cell phones TV's and Express Vu Sat TV. selection for us is really gone downhill.
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On 2020-01-09 2:11 p.m., Martin Potter wrote:
Dave N8SBE wrote : |
Re: Need to Calibrate the V6
#v6
Good call. It¡¯s just a contact closure so you could do both in parallel if you wanted. :-)
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On Jan 9, 2020, at 3:12 PM, Martin Potter <ve3oat@...> wrote: |