开云体育

So I’ve started reading the manual, and this looks very exciting. For one thing, the possibility of rolling an eyes-free interface, with already available TTS or morse readout, is pretty exciting. Since everything can be controlled with a keyboard (numeric keypad maybe?) and mouse (ick…I’ll forego that!), and it’s all GNU/Linux underneath, well, that lends itself to a lot of possibilities. So, glad to see this is getting closer. When I first saw the $500 projected cost, I was a little hesitant, thinking…oh…for an HF only QRP radio, that might be a bit more than I want to spend, but…am I reading this correctly? 50 watts? If so, I can see this as definitely more attractive for more people. 50 watts isn’t far off the usual 100 watts for all practical purposes anyway.

Exciting stuff!


--
Buddy Brannan, KB5ELV - Erie, PA
Email: buddy@...
Mobile: (814) 431-0962

That's super, Tom!? I think all I am lacking for 50 states QRP is Hawaii.? Just got Alaska the other day so pretty sure HI is it.? I have 3 V6 models - one I dedicate to digital, another is main radio with built in ATU, and just picked up a third from a member here that is bone-stock at the moment.? It ordered a Nextion so I can run Ian's firmware.

73,

Justin B.
KI5GKD

I have not tried it myself but I have read of others using an AT24C256 chip to add eeprom.? There is even an I2C module if you don't want to roll your own
--

--
Jack, W8TEE

RPI does not have an EEPROM. OS and userdats is stored on the boot-device (SD-card in most setups).

73 de oz9ny, Niels

--
Jack, W8TEE

Hi Ashhar,

?Is there any chance you can share a price list for various sBITX options?? I'll wager you guys are still finalizing elements of this list but an approximation of pricing would be very helpful for those of us that need to "work on" significant others.

Thanks again, Scott?

Hi Ashar
The update procedure fails if callsign and location is changed from defaults,
And the sbitx (without extensions) file should be removed from github.
73 de oz9ny, Niels

Great job, Justin!? Congratulations!? QRP is fun!? A few months ago I finally completed my WAS via QRP, all with the ubitx.? It took a few years and multiple versions of the ubitx (v3 to v6), but I count it as all with ubitx.? Great little radio!? Super on the 13 colonies in a short time!
73
Tom

Evan,

I have done the calibration using the TCXO. Now both on USB or LSB i can hear the TCXO if I tune slightly (few 10ths of Hz) away from TCXO center frequency 20MHz. Also I am able to receive the TCXO on CW without any problem. I followed the steps from VU2ESE calibration video and using "N8ME firmware with VU3GAO mod".? One more thing, when I tried to do BFO calibration with the the 0.5W 2 inch speaker, the calibration tool indicated strange graph unlike in the video. Then I used my Sony headphone and put a small lapel mic right inside the left eardrum of the headphone. This arrangement produced nice graph on BFO calibration tool.

I think I have done it right, but I still need you to say if that looks good enough calibration?

Thanks

Ashok
VU3KFK

A couple of images which may be useful - added label for the 3 jacks and
a picture of the power jack (worth a 1K words?).

Not sure what I did, but now working as it should.

Tim N7LVB

Trying to set up wsjt-x on a raspberry pi 4 and ran into the same problem again. I’m using a Sabrent usb sound card and have the volume maxed. Only getting 1/4 watt. Any ideas appreciated.

Tim N7LVB

Just had to brag about my V6!? I am up at our cabin, in OK, for the summer and do several POTA activations per week with my uBITX and it has worked flawlessly!? These past several days I also chased 13 Colonies stations concurrently with my POTA activations.? Yesterday I finished my digital QRP Clean Sweep!? All contacts were FT8 except for one FT4.? I have also got my KILO award this year for two parks, all with the V6.

I feel real sad for folks that look down on QRP and say it's not worth messing with... :-(

73,

Justin B.
KI5GLD

Fldigi here.? Looking at my log and grouping by modes, I might have the award for most digitally diverse.? See list below.? I can say that until proven wrong. hahah.

Note, some modes require their own apps like FreeDV and VarAC.? But 99.9% of this is Fldigi.

The large number of FT8 qso might be due to certain automation tools (think WSJT-Z)? -- I collect FT8 for propagation and antenna analysis -- not for any contests, awards or certifications. Just data.

And the modes in yellow are some of my favorate...so number of qso vs enjoyment factor seems a bit inversely related.?

Last on the list is?OFDM500F -- and I can tell you it is wicked fast.?

Yes, the humble uBITX eats these modes up like candy. No problems at all.?

KM4UDX	?
Digital Modes (~)	Count of Mode
FT8	8608
PSK31	835
PSK	181
SSB	134
THOR	131
HELL	92
FT4	83
RTTY	81
DOMINO	68
OLIVIA	53
CONTESTI	45
OLIVIA 16/500	31
OLIVIA 8/250	30
PSK63	27
PH	16
CW	15
JS8	11
CONTESTI8/500	11
WSPR	10
PSK125	10
MFSK16	9
MFSK	9
THRB	8
OLIVIA 8/500	6
OLIVIA 8/1K	5
QPSK31	5
DIG	4
MFSK32	3
QPSK63	3
OLIVIA 16/1K	3
OLIVIA 32/1K	2
CONTESTI4/250	2
MFSK8	2
FMHELL	2
QPSK125	2
DATA	1
CONTESTI16/500	1
OLIVIA8/250	1
JS8CALL	1
IFKP	1
FREEDV	1
MFSK64	1
OLIVIA 4/250	1
JT65	1
FM	1
PSK63F	1
FSKH245	1
OFDM500F	1
(blank)	?
Grand Total	10550

Don the Digitally Diverse.
km4udx

Ashhar,
You are being too kind. I am using Fldigi version 4.1.23 running in Raspbian on a Raspberry Pi 3B. The Pi is the microprocessor part of the Nexus DR-X crosspatch that Budd Churchward, WB7FHC, kits and sells on his webpage at?. The package of software for it is maintained by Steve Magnuson,?AG7GN.?
And by the way, based on my own personal experience, I have come to the conclusion that "Howard's modification" made it possible to run digital on my version 6. I say that because I recently bought a second, but unmodified, v6. I tried to use my Nexus DR-X crosspatch with it but the output power was only about 1/10 watt. After completing "Howard's modification", I can get about 4 watts out on 20 meters and 40 meters. I had already completed "Howard's modification" on my first v6 before trying to go digital with it. That first unit will deliver 5 watts on 20 meters and about 10 watts on 40 meters. I am not smart enough to know why "Howard's modification" seems to enable the digital connection to work, I just lucked into the discovery. I also do not understand why the second v6 won't give me more power out on 40 watts, but QRP digital at 5 watts or less is my niche, so I am happy. My most recent power measurements have been with the Barb-A-Watt QRP HF Power / SWR monitor kitted and sold by Kees Talen, K5BCQ.
Thanks again for the kind words. If it wasn't for you and your uBITX, I wouldn't be enjoying the ham radio hobby today. Please keep up the great creative work!

One more tiny typo in the RTTY/PSK31 section:
on should be "or" I believe?


Thanks again,

Lucas W1BTR