Re: Flrig and uBitX not connecting
I had downloaded Flrig from the W1HKJ site, version 1.3.44, when I was trying to use it. I've deleted it from the computer now as it did not work.
Is anyone else using Flrig?
=Vic=
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Hi,
Good things come to procrastinators... This KV4QB site has a lot of interesting Ham related microprocessor projects. Including adding a TFT display to a uBitx. And a cool simulated analog meter using a small OLED display.?
He has a project for a 63 db step attenuator using eBay attenuator modules. I recently bought two to do the same thing. And when that day comes I have some spare time I was going to hash together some kind of Arduino code to control them. Right there on his site is code to do just that. Maybe if I stay busy with client projects, my soldering iron will build the thing for me (Maybe like Disney's Fantasia. Although I seem to remember things went terribly wrong when inanimate objects were set off to do work). Well, maybe, procrastination won't be rewarded at that level.
Tom, wb6b
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Hi Vince, Wayne... It's based on work done by DuWayne KV4QB -
I have a few spare boards if you are interested...
/ Gerry
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Re: Look at this on eBay, ubitx, budget test equipment.
I bought one of these signal generators (FY6600) about a year ago. It can do everything I require for HF and is accurate enough for my needs. It has a lot more functions than I expect I will ever use seriously. it is quite entertaining playing around with it? though if you have a scope available.? I am a? bit on the careless side (see bin of dead Arduino nano's by my bench) and have not managed to damage it yet.? On the not so good side the screen is a bit small but the PC application that you can download for it solves that. A couple of locks ups requiring a re-start and thats about it. Cant go far wrong at the price I think.?
Jim
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Re: treble only SSB modulation
You may like to hear your modulation yourself with another receiver. You transmit into a dummy load and you receive without any antenna. I have ver. 3 and has no basses, say lower than 500hz. Listening to my SDR receiver I like my modulation a lot! Excellent for dx. I had generally excellent reports. However I trust more of what I hear myself than the reports by others. Not always their carrier is yours, they might have strange settings in filters, pbt etc
Il 14/mag/2019 22:41, < laurent.bury@...> ha scritto: Hi there uBitx owners,
today a ham confirmed me that my modulation was only in the treble part of the audio spectrum: no bass and (that the most annoying) no medium frequencies to hear...
I wonder? if this a known and common problem, although I was not able to find something related while browsing the group's messages.
For information, I just use the electret mike as delivered with my V3 board.
Any comments ?
73s
--
Laurent F5FIE.
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Hey Curt,
This past weekend, I was able to receive some distant phone and CW signals with none of the garbling that I heard this evening. Unfortunately, this evening, everything sounded garbled to me, even things that my friendly neighbourhood test subject was not transmitting. I'll try to work through your calibration guide.
Thanks,
Jon
Sounds quite cool to me!
3 blocks is dreadfully close. How do more distant signals sound? Receivers do overload when signals are huge.
Possibly also your ubitx may need the bfo adjusted. See my most recent message for a link to a calibration guide.
Take care and enjoy the radio building experience. Look around this site and see my stumbles if you wish. Meanwhile you have a cool rig to experience.
Curt
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Sounds quite cool to me!
3 blocks is dreadfully close. How do more distant signals sound? Receivers do overload when signals are huge.
Possibly also your ubitx may need the bfo adjusted. See my most recent message for a link to a calibration guide.
Take care and enjoy the radio building experience. Look around this site and see my stumbles if you wish. Meanwhile you have a cool rig to experience.
Curt
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I've recently built a ubitx and hooked it up to a GR5V antenna that I borrowed from a member of my local radio club. This evening, I was working with a friend of mine who lives three blocks away to test the rig, but ran into some interesting problems.
When he transmits, his signal comes in very loud, but his voice is garbled. If I move a few kHz around the frequency that he's transmitting on, the pitch of his voice varies, but it remains garbled. It sort of sounds like the teacher from Charlie Brown crossed with a robot from an 80s kids movie, and I can't make out any of the words that he's saying.
If I transmit, he gets a similar effect, wherein my voice is loud but very garbled, and comes along with a high pitched carrier that he can hear whenever I'm transmitting.
For both tests, we were on 20M, around 14.247MHz. The antenna that I'm using is very homemade, and it probably isn't mounted high enough off the ground, but the fact that I'm hearing the signal loud and clear, but that it's garbled makes me think that the problem is with my radio rather than with the antenna configuration.
What can I do to troubleshoot this issue?
I've attached a couple of recordings of the problem. Hopefully somebody recognizes the problem from listening to them.
Thanks,
VA3JFZ
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Re: Inexpensive eBay Amplifier Kits
The one looks to be the amplifier and filter module to me.
Matthew Pitts N8OHU
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On May 14, 2019 4:40:23 PM EDT, Wayne Leake <wayneleake@...> wrote: Now the one wants $140.xx for it, while the one in french is cheaper.
A big difference, yes?
Wayne WA2YNE
--
Sent from my Android device with K-9 Mail. Please excuse my brevity.
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newoldham wrote : "It's a 20m Dipole, not well-tuned!"
Using any antenna tuned to an HF ham band helps to mitigate against the "invasion" of interference from nearby AM broadcast band signals. So with a 20m dipole you *should* be OK. Are you near an AM broadcast transmitter site? Do those carriers have modulation on them?
73,
... Martin VE3OAT
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Re: Inexpensive eBay Amplifier Kits
Thanks Curt. Okay that¡¯s the filter I was going to get as well. I also saw the blog where the blog suggested to increase bias voltage. I am also waiting for a similar sized heatsink too, next will be a case for the filter and amp.?
Joe
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On May 14, 2019, at 4:08 PM, Curt M. < Kc3hjp@...> wrote: Hi Joe,?
The filter set that Oliver has listed above is the one that I am using. ?They used to be $50 or so which in my opinion was overpriced especially compared to what they are now. ?I mounted mine filters in an aluminum enclosure with a switch on the front to select the individual bands. ?Be sure to get yourself a fan to mount on the side of the heatsink. ?Tehy ahve convienently pit a connector on the board to power the fan.
Here is an old picture of mine while I was still in the testing stages and before I mounted the fan on the side. ?There is a heatsink and fan available on ebay that fits the board perfectly. ?I also made a PTT cable up for when I use it with the FT-817ND.
Curt M.
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Re: Look at this on eBay, ubitx, budget test equipment.
I took a look at it.? Simple, straight-forward, and most of the
features I consider critical - you can do a lot with that.? If the
battery test puts a small load on the battery while testing,
that's a nice extra.? The small size is also a plus... and the
voltage rating is sufficient for most uses.? (I wouldn't want to
test a 480vac line with it!)
I'd be careful with the amps testing... no fuse.? A good idea
would be to make an adapter that fit in the amps socket, which had
a 10a fast-blow fuse that was replaceable.? They also have a time
limit for that sort of tests, and I'd consider that the absolute
maximum (better to be extra careful).?
All in all, not too shabby... good for general use.?? I'd use one
for a "tool-box" meter.
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On 5/13/19 10:17 PM, Kelly Mabry wrote:
I use an innova 3320 dvm; it showed up in an issue in QST some
months back. Its good for what it does.?
73,?
Kelly K5AID?
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Re: treble only SSB modulation
Laurent
my best guess is the BFO calibration is off - shifting you passband to the high side.? possibly you might hear similar distortion on receive??
try the instructions here, as required
(use CTRL click to launch the url - it goes to the K3PZN ubitx page)
the only other consideration is some ubitx owners report low transmit drive - see if you wattmeter at least moves on transmit?
Curt
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Re: Flrig and uBitX not connecting
Sorry, I'll take it back. I just read that you wrote WSJTSX worked and checked the source code
? Init_Cat(38400, SERIAL_8N1);
? initSettings();
? initPorts();???
38400 is correct after all. What version of flrig do you use? I mean when was it released? I think I remember the rig control library once had a problem..... Sascha
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Re: Flrig and uBitX not connecting
Hi Vic,
I think you are using the wrong baud rate. Try changing to 19200 Baud - that should do the trick.
The correct speed is hardwired within? KD8CECs firmware. You can change it of course, but then you need will have to recompile the source code again.
Good luck
Sascha
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treble only SSB modulation
Hi there uBitx owners,
today a ham confirmed me that my modulation was only in the treble part of the audio spectrum: no bass and (that the most annoying) no medium frequencies to hear...
I wonder? if this a known and common problem, although I was not able to find something related while browsing the group's messages.
For information, I just use the electret mike as delivered with my V3 board.
Any comments ?
73s
--
Laurent F5FIE.
|
Re: Inexpensive eBay Amplifier Kits
?Now the one wants $140.xx for it, while the one in french is cheaper.
?A big difference, yes?
|
Re: Inexpensive eBay Amplifier Kits
Hi Joe,?
The filter set that Oliver has listed above is the one that I am using. ?They used to be $50 or so which in my opinion was overpriced especially compared to what they are now. ?I mounted mine filters in an aluminum enclosure with a switch on the front to select the individual bands. ?Be sure to get yourself a fan to mount on the side of the heatsink. ?Tehy ahve convienently pit a connector on the board to power the fan.
Here is an old picture of mine while I was still in the testing stages and before I mounted the fan on the side. ?There is a heatsink and fan available on ebay that fits the board perfectly. ?I also made a PTT cable up for when I use it with the FT-817ND.
Curt M.
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Re: BITX40 First version (Through hole type) - Wiring Up diagram required
?Amateur radio kits for BITX units parts ?The parts are for a BITX20, but with modification can be for any band. ?They also sell some bare boards, through hole type.
? I have one that is for 40 meters, but I will be using it for a BITX20. ?Hope this is what you might want. ?neater by far than the manhattan style, and more compact.
?Though, using 2 boards, it takes a bigger cabinet than Farhans BITX40 and uBITX radios.
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?Looking at two pictures, it looks to be a NANO with a TFT, maybe touch screen?
?Interesting, being as I just received two NANOs, though planned to use one to make a clone of a raduino.
?Maybe both, in the back of my mind. ?For a dummy load, I havea commercial grade 100-110 watt dummy load that I got on Ebay some years back. It uses an RF resistor mounted to a large heat sink, well worth what I paid for it.
?I do have to use a UHF to N adapter, as it has an N connector.
?Lots better than the Cantenna was. Lighter, no worry about spilled oil of whatever type.
?I used transformer oil in the one I built. MY brother may have used mineral oil in his, being as he was less likely to search for, and find a source for transformer oil. Mine did leak a teeny amount through the pressure vent, just enough to make an oil/dust mix, LOL. ?Anyway, I'd kinda like to build this mini dummy load with meter for QRP testing.
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Vic WA4THR
