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Aloha Jim,

I received my kit (realized after I ordered it that I intended to order the next step up, with the fiddly bits of soldering already done, but I'll get help locally and it will be fine), and look forward to assembling it in January.

I have perused the documentation on your site, and maybe I'm just overlooking it, but can I use CAT rig control? I'm trying to visualize digital mode operation and CAT seems like the "cleanest" way to implement things like keying.

Mahalo,

de WH6FZA (formerly KB0PXK/GA)

SOLD

Please try the following:
power on the radio while keeping the function button pressed

this will restore the original "factory" settings.

73 Allard PE1NWL

Maybe post a few pix of the display & your ubitx v3??

If you are getting a waterfall with PSK31 signals displayed, I would be a bit puzzled.? Perhaps start with digipan as it tends to be easy to get working.? Make sure you know what a PSK31 signal looks like on the waterfall.? If the emissions are something else, of course there won't be encoding.? The last version of digipan has a window for decoding all or most the signals in view.?

Since you are decoding something - one would think you have the right drivers installed.?

Possibly getting the gain setting right might be an issue - but if you have a nice waterfall the gain is okay.? It should not matter what ubitx software you have installed - PSK31 is grabbing the appropriate spectrum and letting the PC do all the work.? if you have another PC with soundcard - try receiving with a simple audio cable between them to verify all is okay with the ubitx here (if you can hear PSK31 sounds likely it is okay).?

Curt

Here is the link:
http://www.hfsignals.com/index.php/ubitx-tuneup/

Hi Chuck,

As per the instructions it is not a voltage set but a current set. Look it up to confirm my memory that it is 100 mA for each transistor with no signal applied.

73,

Bill KU8H

--
bark less - wag more

Hi all, I have to replace the finals and the bias adjust pots, what is the
voltage set for on the 510 finals ?

thanks chuck

Have you tried adjusting the contrast trimmer on the Raduino yet?

I have and this works, thanks.? Should've been first on my list.

Unplug the raduino and connect to your pc, if you still cant read the display there is an adjustable pot on the raduino give that a tweak to get the data on screen.?Refit the raduino and ensure you have suppy to the motherboard.

When connected to my computer, I can read the display just fine.? All the raduino contacts appear to be properly fitted and there is power to the motherboard.

I believe the display issue to be a red herring.? The main problem is that the "Raduino v1.27.7" screen never goes away and I don't get any reception, just a kind of "dirty" hum (for lack of better words).? No clicking when I turn the VFO, either.? The hum is affected by the volume pot.

cmh

Glad you like it and Thanks for being my guinea pig <insert evil laugh>

I had my BITX40 spread out on a breadboard and powered up and operating.
I wanted to take a photo of it with my iphone.
As I moved the iphone to within about 18 inches of the BITX40 to take a picture
I started hearing?loud squealing noises from the speaker connected to the BITX40.

Your smartphone may be a source of interference to your BITX.

John Norris
KI4UCN

Ubitx V4 updated to CEC 1.08?
PSK 31 will not decode in any PSK software? Fldigi,HRD or Digipan? I can decode CW in all 3 ok.
I tried using Easy Digi with or without No difference in either. ? I had the same problem with Stock software V4.03 as received new.
?I am using WIN 10 internal soundcard.

Transmit is a little low but? ubixt? seems to work fine.

Any suggestions where to look for problem?
Thanks

Ed Blake

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My uBITX has always been a little deaf (couldn't figure out why) so I built a RX front-end addition.? Also wanted AGC so it became an amplifier followed by an attenuator. ? As with prior AGC / RF Gain mods, it inserted in the RX antenna trace (Ripley, et.al.). ? As built, it provides a maximum gain of ~ 8 db (+12db from mmic - 4 db from atten) with a 3.5 db NF, which can then be attenuated to more than (about) 50 db down.? Have not measured exactly...?? It really wakes up the RX!?
Attenuator Control:? >5 volts for minimum attenuation, approaching zero volts for maximum attenuation (at 22 to 5 ma, depending on attenuation setting).? For manual control would use a potentiometer and voltage follower for current buffer...

I made no attempt to minimize current draw.? It is a bit of a pig, consuming 70 ma + control current (22ma).
Also, no attempt was made to minimize the board physical size...
It uses a MAR3 SM mmic followed by a HSMP-3816 pin diode array attenuator.?

If anyone is interested, I have a to-scale PDF for the board layout, a parts placement image, full resolution schematic, etc.? I can ZIP up a package...


Currently working on an audio derived AGC amp/controller for this thing.? Have it sort of working, but not happy with the performance yet.? Sure would like to have some Plessey SL621C ICs.? I have an ancient homebrew rig that uses one and it is great!?
So far, It looks like this:


?
73,
Woody

Mine has a diode where that is supposed to be.

I now understand I should swap out the relays but there is still part of my original question.

I asked if there are any mods that need to be done to the current version you are shipping

Is there a list somewhere or or is the rest of the V4 ready to use?

Thanks in advance.
--
Lee - N9LO? "I Void Warranties"

?

1) When we followed Tune up instructions for adjustment of the Power Amplifier Bias - All currents measure ok by instructions up until speaking into microphone, the current did not increase as per instructions, Can you help?
2) Audio output extremely low?
3) 10k and 2.2k resistors in parts list not mentioned in wire up diagram, where do they go can you help?

Regards
Will Bennett VK4WBX

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When I had the same problem changing the encoder fixed it. Good luck!

Hi I concur with Jack about capacitive screens being less precise. I have a tablet with capacitive screen it it some times jumps to conclusions with out me touching it. I have also noticed it doesn't like RF but that may be just mine. Anyway eagerly awaiting the boards. Many thanks for the work and effort put in to the designers and testers.

Barry?