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Re: WSJT-X for uBITX using LINUX
brad martin
?If possible can you screenshot ?your config window for the radio. I will compare it to mine in the morning. I am using Ubuntu 18.10 with wsjtx 2.0 and it runs just fine for me one I got the setting right.? Brad Kg5spr On Wed, Dec 19, 2018 at 11:37 PM Mark M <junquemaile@...> wrote: I know this is an old thread but I just started playing with WSJT-X 2.0 FT-8 on my uBitX. I'm running it on Ubuntu 18.04.1 LTS. It runs OK, at least in receive mode...I haven't tried transmitting yet, but I'm having issues with the CAT connection. It appears to connect but I get a Hamlib error 'Command rejected by the rig while exchanging VFOs' when I try to test it. CAT works fine with the uBitX from Fldigi using Hamlib. In both cases I set it as FT-817. --
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Re: ubitx receive signal
First, K3 is the main TX/RX relay so it's not trading an entire circuit in or out of the mix; it's just routing one point (antenna) to one place (RX) or 'tother (TX). The quick way to see a difference in sensitivity is to run this little project on 14.5 volts; take care, and consider adding a 7812 and allow that to be the source for the Raduino. Ask why I suggest that.... The RF kind of likes the extra kick as well. Whether or not you go and risk making your processor explode, try one of these AGC circuits pre-built and available from domestic and eastern sources: I interrupted the low-level audio feed going to the volume knob. Obviously, the wire end from the board goes to the place where the capacitor mike is removed from this board (with a DC blocking capacitor there, for good luck as the original mike has to have DC to operate...). The wire end leading to the volume pot now comes from this addition's output. There's a way to set three levels of audio gain and I believe I used the middle setting and seem to get a reasonable amount of help without amplifying general circuitry noise. A side note:? If you want to hear what happens when the same AGC board is added to the mike circuit, make a sked sometime. Good reports are being given on the compression and readability for a QRP setup, which one has to set with care not to be accused of attempting "spread-spectrum" on the cheap. |
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Re: designer mods
Michael makes a good point - that even an inexpensive product needs to meet the minimum regulatory requirements to be considered serious beyond people (like myself, admittedly) who bought it knowing it's going to take at least some light work to make it truly usable. That having been said - And I say this constructively and quite proud to be part of this circle
of experimenters that, for what I paid for five proper relays, I'd
happily have paid 2/3 that in additional costs for the product.? Add
the other parts that I have added myself or will add soon (45mhz filter,
Axicom relays, SMD coils) for another $15 or $20 and at least I don't
have to go to three different suppliers and risk letting the magic smoke
out after unsoldering FOURTY separate little pins, just for the relay
upgrades. The whole concept is fantastic!? Even as a mobile rig - and I've run it that way in a control-head configuration - it's amazing for it's size and minimalist design. I'm even happier with the TFT screen and software addition and am wrestling with whether to build this within a Pelican briefcase with a short remote head with screen & controls together but tethered, or keep it in a mobile installation with separate remote heads - one on the dash with just the screen, fed with a well-shielded mouse cable - and another for the center console that has the volume/power knob, tuner/select knob, and a microphone port. The speaker will be a deep and throaty commercial Midland speaker pretty much the same as the speakers used with the bat-winged public safety radios.... fed with an internal 30-watt audio amp for $5 off eBay for that soft, clear sound at regular listening levels.? |
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Re: [BITX20...build idea
Saved that site. But on that page they only have
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Push-On Knobs - "D" Shaft which means 1/4-in "bore" or hole and I did not see one for a smaller shaft. May on another page. Thanks for the website. May come in handy some day. Bob ¡ª KK5R -------------------------------------------- On Wed, 12/19/18, Gordon Gibby <ggibby@...> wrote:
Subject: Re: [BITX20] [BITX20...build idea To: "[email protected]" <[email protected]> Cc: "Bob Lunsford via Groups.Io" <nocrud222@...> Date: Wednesday, December 19, 2018, 2:10 PM Knobs with all different sizes of bore... Or fill 1/4 knob with epoxy after greasing the set screw and all the way in; ?remove set screw after hardening , center drill to whatever size you prefer...... On Dec 19, 2018, at 13:01, Ian Reeve <ian.radioworkshop@...> wrote: the knobs can be found at radio rallies or hamfest but much easier to change for a standard sized pot of the correct value.You could also at a pinch pad out the thin shaft by wrapping with electrical tape or similar.I used one with the split splines shaft type commonly found on all suppliers.? Ian M0IDR Get Outlook for Android From: [email protected] <[email protected]> on behalf of iz oos <and2oosiz2@...> Sent: Wednesday, December 19, 2018 5:46:32 PM To: [email protected] Cc: Bob Lunsford via Groups.Io Subject: Re: [BITX20] [BITX20...build idea ? I couldn't find the right volume knob too. So I ended up finding those wire connectors with two vertical screws. In the end, admittedly it is a bit ugly, but does well the job. Il 19/dic/2018 14:09, "Rajan Krs via Groups.Io" <rajankrs@...> ha scritto: On Wed, 19 Dec 2018 at 8:19 AM, Bob Lunsford via Groups.Io <nocrud222@... > wrote: I saw somewhere a comment about the knobs. The encoder knob is not a problem since it has a pretty much standard size shaft diameter. However, the volume control shaft is smaller. I've seen knobs on old clock radios that are this diameter size but when I could not lay my hands on the right knob immediately, I began to wonder what I could use in the meantime I used a twist-on wirenut designed for large size wires. It is yellow in color ¡ª colors denote splice size. Twisting it on the shaft provides a usable knob for the volume control knob. I suggest using some caution when putting the wirenut on the shaft, though, no need for it to be gorilla tight. Make it tight enough only to turn radio on and off. Also, if the wirenut "knob" is not straight on the shaft, it is easy to move it to the proper position and make it straight on the shaft and more what one would expect of a knob. Sure, you can go to Mouser and sqqa ASelect parts to one's heart's content but this "fix" allows immediate use even if waiting for that Mouser package. For me, I want a usable radio and not a display model even though I want it to look good. This temporary "fix: works for me. Hope this helps someone. Bob ¡ª KK5R |
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Re: [BITX20...build idea
When I'm building and need an item that is not handy,
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the first thing I do is look around to see what I already have to use in the old experimenter's tradition. I thought about the shrink tubing idea ¡ª it's a good one but figured I'd need several layers to make it fit into a standard knob's hole. While I was looking around, I saw the wirenuts. I did not immediately use one for this but then grabbed one to try it. It only took a couple of seconds and voila, it was all done and not worth looking around for some other "fix." The next hamfest will find such a knob on the list for what I'll need to bring back home. I know i have that kind of knob in a container here somewhere and may find it before then, though. However, because the layout on my radio has the other connectors plugged into the front panel, such as the Microphone plug, the volume control knob sticking out farther makes it easier to use. Therefore, I'm thinking this is a good way to go, at least for now. When I go show off the radio, if anyone comments on the way I did the knob, I'll tell them to go buy a UBITX of their own and do it the way THEY want it to be. Ha Bob ¡ª KK5R -------------------------------------------- On Wed, 12/19/18, Ted via Groups.Io <k3rta@...> wrote:
Subject: Re: [BITX20] [BITX20...build idea To: "[email protected]" <[email protected]> Date: Wednesday, December 19, 2018, 2:00 PM A short length of heat-shrink tubing, just length of the shaft and a size that will shrink nice & tight, will usually take up the slack between this shaft size and a more standard 1/4" knob opening. -ted |
Ted
Bob Lunsford