Date   
Bought UbitX at Winterfest 2019?

Stephen Johnson <stephenpjohnsonsr@...>
 

If you bought my uBitx, you may have noticed a part is missing. I accidentally left it out of the box. Please contact me, identify the missing part, and I’ll be glad to ship it to you. Sorry!
--
Stephen P. Johnson, D.Sc.
Artistic Director
Bluegrass Barn Concert Series
Frying Pan Farm Park
Herndon, VA 20171
(703) 887-3145 (cell)

Re: Restock

William R Maxwell
 

There is so much activity on this group that it is hard to keep up with all the activity. Are these AGC boards available only as pre-assembled boards David or do you also offer kits?  I vaguely recall you were entertaining thoughts of kits on request?

Bill VK7MX  

Re: pop click pop on tuning BITX40

John Cardoso
 

Allard, Is this really true? So it is! I installed your version 1.28.1 and it is all like music to my ears. All the clicks, crackles and pops are a thing of the past. All pops gone. Totally. Only the beautiful band background noise. Congrats, you solved my problem that was starting to get to me.
I am grateful for your help. Now the usual question: What was it that was solved in software?
Cheers guys.

Virus-free. www.avast.com


On Sat, Jun 15, 2019 at 8:08 PM Brian <vk4bap@...> wrote:
Hi John,
I agree with Allard that his software will cause less tuning clicks that Farhan's original software but you might want to first do the hardware changes. Easy to hear the improvement if it is loud.
It looks like you only have one big electrolytic on the supply to the Raduino. Like others I found two with a low value resistor between them (10 or 22 ohms) was needed to make any real difference. You might also want to separate the wires in the bundle to the tag strip but the filter in the supply line seems to be the most important. The BITX is sensitive to tuning clicks because most of its rx gain is in the AF end. I was surprised how the clicks were difficult to control.
73 Brian.

Re: UBITX Low Rx on all but 40M

Curt
 

Possibly raduino isn't setting the proper filter. Try a jumper around the filter.

Re: BITX 40PARTS

Curt
 

Hfsignals is a small business, not full time, he patient. Do discern what is really missing.

Re: Restock

 

I will sell them in kits at request for the listed price, be warned they are not for the faint of heart and it is strongly recommended you have a hot air reflow as the pads are not hand solder friendly. You can hand solder them but it can be tough unless you have done this before.
--
David

 N8DAH
Kit-Projects.com

Shop is open!

uBITX TX wattage

atc_jeff@...
 

Why is the Transmit wattage lower for the current version, especially at higher frequencies?  when I look at the specs for Ver4 versus the current specs,  It appears to be only 2 watts at 10 meters today yet 5 meters at ten watts vers 4 and 10 all lower bands vers 4.  Today's specs don't reach these levels.

Re: BITX 40PARTS

Sudanthiram N
 

Dear all,
The HF SIGNAL, MOTIVE IS EARNING MONEY ONLY . AFTER SALES NO SERVICE.Is there any law,a small business concern will not give any  assistance to the buyer?. I also sent a enquiry to HF SIGNAL.BUT NO REPLY.
 
THANKS & REGARDS
VU2NSK

On Mon, 17 Jun 2019, 7:00 am Curt via Groups.Io, <wb8yyy=yahoo.com@groups.io> wrote:
Hfsignals is a small business, not full time, he patient. Do discern what is really missing.

Re: KD8CEC - Bug with storing label for Memory# 10

Mark Hatch
 

Just wanted to close this thread that Vic also confirmed this problem with saving a tag/label to location 10 with KD8CEC 1.2 and v3 of the Nextion screen software. If anybody has a solution, look forward to hearing it!

73
Mark

Re: pop click pop on tuning BITX40

Allard PE1NWL
 

John,
glad to hear that it's fixed!

There are a number of improvements in the software that reduce the clicks,
perhaps the most important one is the usage of Jerry Gaffke's si5351
routines instead of the standard si5351 library.

73 Allard PE1NWL

On Mon, June 17, 2019 03:24, John Cardoso wrote:
Allard, Is this really true? *So it is!* I installed your version 1.28.1
and it is all like music to my ears. All the clicks, crackles and pops are
a thing of the past. All pops gone. Totally. Only the beautiful band
background noise. Congrats, you solved my problem that was starting to get
to me.
I am grateful for your help. Now the usual question: What was it that was
solved in software?
Cheers guys.

Re: Antuino DOA

David Wilcox
 

If you are like me, the FG-01A is the “berries” for antenna tuning and SWR.  The Antuino has other uses that may be useful for the price.  Mine is flakey in its operation so more trouble shooting or waiting to see someone else with a solution.

David J. Wilcox K8WPE’s iPad

On Jun 16, 2019, at 7:19 AM, Don W <dwinflorida@...> wrote:

On Sun, Jun 16, 2019 at 06:15 AM, David Wilcox wrote:
Here is a start:
 
 
You may have other problems but check out Mikes note about the power connector.  Also he may be able to help.  I have had other issues and will continue to tinker with mine.  You might try emailing Farhan but he is quite busy now.... working on the final version.  http://www.hfsignals.com/index.php/antuino/ and afarhan@...

David J. Wilcox K8WPE’s iPad

I have been on the fence as to whether I was going to want an Antuino, especially after picking up and YouKits FG-01 for a good price in ebay.

That blog post from n2htt just changed my mind; I'm now in the "can't wait until the're available for purchase" camp.

Re: BITX 40PARTS

Vic WA4THR
 

Note that the Raduino is now the same device shipped with either the BitX40 or the uBitX, but the sketch that is loaded is different. You can check it by plugging in the Raduino, even not connected to anything else, to your computer with a USB cable and it should show which version is loaded. The on-line connection instructions still refer to the older Raduino which had dedicated 5 or 8 pin connectors rather than the single 16 pin angled connector now supplied, but you connect to the same pins (closest to the blue pot) as before and it will work fine.

They really need to update the instructions and picture to show what is currently being supplied as it is confusing to many.

=Vic=

LinAmp

Vaughn
 

A short time ago I asked about using the second power supply for the final output amplifier and it was suggested I build a LinAmp, as this would be safer.

To this end I have, from the links offered, found this amp, https://www.ebay.co.uk/itm/DIY-kits-70W-SSB-Linear-HF-Power-Amplifier-MINIPA70-For-YAESU-FT-817-KX3-UK/152647412368

My problem is, I have found many documented tests and what I did to build this, but no instructions as to how to build this. Non of the documentation found, give enough detail, on winding's for instance, so I fear the build may not go as planned.

Can anyone here please offer a link to a build instruction page please?

Re: LinAmp

Viktors Miske
 

I'm a QRP fan, but did a quick google search, hope this might help:
https://www.dk9jc.de/blog/equipment/142-diy-kits-70w-ssb-linear-hf-power-amplifier-ft-817-kx2-kx3

Re: LinAmp

Mike Short
 

You also need a LPF after the amp. 

Re: LinAmp

Olivier Grand
 


Le lun. 17 juin 2019 à 11:45, Vaughn <vlkteach@...> a écrit :
A short time ago I asked about using the second power supply for the final output amplifier and it was suggested I build a LinAmp, as this would be safer.

To this end I have, from the links offered, found this amp, https://www.ebay.co.uk/itm/DIY-kits-70W-SSB-Linear-HF-Power-Amplifier-MINIPA70-For-YAESU-FT-817-KX3-UK/152647412368

My problem is, I have found many documented tests and what I did to build this, but no instructions as to how to build this. Non of the documentation found, give enough detail, on winding's for instance, so I fear the build may not go as planned.

Can anyone here please offer a link to a build instruction page please?

Re: LinAmp

Mike Short
 

I bought a LPF board from a TS-440 for about $30 to use with an amp I am building. There are about a dozen from different radios on eBay right now. There are also kits to build your own. 

Re: LinAmp

Karl Heinz Kremer, K5KHK
 

Use this resource: http://www.oe1cgs.at/50w-hf-verstaerker/
The page itself is in German, but links to the English version of the actual document. It also describes a two band LPF that fits nicely over the PA and a 3D printed case for both. 

--
Karl Heinz - K5KHK

Re: UBITX Low Rx on all but 40M

Bob Fischer, Fischer Technical Services
 

UBITX Low Rx on all but 40M problem has been solved.  After Phil Sanford, AF8H, loaded KD8CEC software into my V3 uBITX, I was able to use the new software to find that the BFO was not calibrated properly.  I had calibrated it "by ear," using the recommended procedure of "tuning a SSB signal to loudest - then entering BFO CAL and re-tuning to clearest audio and pushing PTT."   I highly recommend the KD8CEC upgrade.

Re: LinAmp

Joe Puma
 

I am using the same 75 w ebay amp and this LPF https://www.ebay.com/itm/12v-100W-HF-low-pass-LPF-unit-spare-parts-DIY-KIT/121904189737?

After frying a few finals and the board catching fire I have it running nicely now.  Use a fused power line when your testing and using. Trust me ☺️☺️😩

Joe
KD2NFC 


On Jun 17, 2019, at 7:08 AM, Karl Heinz Kremer, K5KHK <khk@...> wrote:

Use this resource: http://www.oe1cgs.at/50w-hf-verstaerker/
The page itself is in German, but links to the English version of the actual document. It also describes a two band LPF that fits nicely over the PA and a 3D printed case for both. 

--
Karl Heinz - K5KHK