Date   

Re: Suggestion for the NEW UBITX V7.

Bob Lunsford
 

My concern is that moving the assembly of the V6, etc., to obtain parts here in the USA would also require that the toroids be wound here in America.

I appreciate much that the Indian women at HF Signals are winding the toiroids and are doing the assembly. I have wound single layer and trifilar toroids and while it is something I can do, it is tedious as I have had extensive eye surgery (three on left eye and five on right eye) due to double retinal detachment and cataracts.

The women there are expert and professional and I am more than willing to pay for them to do it: It's one of many reasons to buy the HF Signal transceivers rather than build it here and then (possibly) go through a trouble-shooting phase.

The alignment is another issue since it's ready to work out of the box and while others may see alignment as a simple task and while I could perfect the process with some time and experimentation, I'd rather just use the radio right off than go through a possible delaying process. Incidentally, I have built most of what Heathkit had in the transceiver and accessories line and such activity would be more a challenge at this point in my life than gaining a sense of accomplishment.

Therefore, even if HF Signals offers a "streamlined kit" with specific parts like PC board and unique parts, I sincerely hope that kits such as the Basic Kit and Complete Kit continue to be available.

I just sent my V6 to my mountain-topping son in California (N5DIM) and almost immediately ordered another Complete Kit for my personal use. Ease of use is a factor but the receiver in the V6 is hard to beat for being so sensitive and quiet. Congratulations in sharing such a unique radio with such simplicity of operation. For what it is, the V6 is unbeatable...!

Kudos must also go to the women at HF Signals who are, in my opinion, top-of-the line builders/assemblers. It's almost as if the toroids were machine-made. They must have achieved their own level of quality control due to the boards are top level quality both in layout and build.

Bob — KK5R

On Saturday, October 17, 2020, 1:28:21 AM EDT, Ashhar Farhan <farhanbox@...> wrote:


HF Signals is reluctantly in this business.  It doesnt make sense to move parts from Mouser, Ohio to Hyderabad, have them assembled and then shipped back to Tennessee. Why wait for them to make this move? The suggestions can all be incorporated into a single plug in-board (the audio connector and Raduino are in the same line to allow a single board to plugin). 
Between Hobby PCB and mouser all the parts can be easily procured. The hf signals boards cost twice what you will pay in components and pcb. It is just all the transport, soldering, testing and administration costs.

Unlike qcx or xeigu, bitx radios are open with hardware and software. My idea was to encourage a number of kitchen table businesses to turn out easy to understand and build radios. I hope others take up the slack.
- f



On Sat 17 Oct, 2020, 9:06 AM ohwenzelph via groups.io, <Ohwenzelph=yahoo.com@groups.io> wrote:
On Thu, Oct 15, 2020 at 04:26 AM, Gerard wrote:
As an owner of a V6 I would love to know what the detailed specifics are regarding the following:
Add CAG
Add core, capacitors, for noise of the connection of the Nextion
Modifications on some transistors of the emission chain
Changes to winding on the emission chain
thanks, sincerely
jerry aa1of
 


Re: Suggestion for the NEW UBITX V7.

Ashhar Farhan
 

HF Signals is reluctantly in this business.  It doesnt make sense to move parts from Mouser, Ohio to Hyderabad, have them assembled and then shipped back to Tennessee. Why wait for them to make this move? The suggestions can all be incorporated into a single plug in-board (the audio connector and Raduino are in the same line to allow a single board to plugin). 
Between Hobby PCB and mouser all the parts can be easily procured. The hf signals boards cost twice what you will pay in components and pcb. It is just all the transport, soldering, testing and administration costs.
Unlike qcx or xeigu, bitx radios are open with hardware and software. My idea was to encourage a number of kitchen table businesses to turn out easy to understand and build radios. I hope others take up the slack.
- f



On Sat 17 Oct, 2020, 9:06 AM ohwenzelph via groups.io, <Ohwenzelph=yahoo.com@groups.io> wrote:
On Thu, Oct 15, 2020 at 04:26 AM, Gerard wrote:
As an owner of a V6 I would love to know what the detailed specifics are regarding the following:
Add CAG
Add core, capacitors, for noise of the connection of the Nextion
Modifications on some transistors of the emission chain
Changes to winding on the emission chain
thanks, sincerely
jerry aa1of
 


Re: Enclosures

Sunil Lakhani
 

If there are enough takers for version 6 type case we can make custom case for various sizes using displays . 
The enclosure we have on our website also are compatible with wiring required which is provided with accessories.
We shall post details on using our enclosure for version 6 soon using existing case.
Best wishes
De vu3sua.


Re: Suggestion for the NEW UBITX V7.

ohwenzelph
 

On Thu, Oct 15, 2020 at 04:26 AM, Gerard wrote:
As an owner of a V6 I would love to know what the detailed specifics are regarding the following:
Add CAG
Add core, capacitors, for noise of the connection of the Nextion
Modifications on some transistors of the emission chain
Changes to winding on the emission chain
thanks, sincerely
jerry aa1of
 


Re: uBitx v 6.1 for sale

Ted
 

What else are you getting rid of?  I'm looking for a 40m qrp box similar to the 4-States QRP Club Cyclone-40 or the NorCal 40, if that's a correct reference. 

Nice build you've got there on the V6. 



-Ted



On Fri, Oct 16, 2020 at 14:14, Grover Cleveland via groups.io
<k7tp@...> wrote:
After much deliberation I have to sell some radios including my v 6.1 uBitx
This is upgraded with the 2.8" Nextion screen and the latest software in the standard black metal case.
Included is the original mic that has been modified to increase the output (remove resistor, enlarge hole).
Asking $175 including USPS shipping in the U.S.  Other countries at cost.  Paypal only.
No trades please.

Thanks,
K7TP
(write for the Paypal address please it is not the one on QRZ)


Re: W0EB.com

Jim Sheldon
 

The migration to a new server went off virtually without a hitch and the TSW website www.w0eb.com is back up.

As far as I can tell, everything is intact and as it was before.

For those that visit the site often, thanks for your patience.

Jim - W0EB
TSW Project Coordinator & webmaster


Re: Ubitx V3 - No tx issue #v3

Arv Evans
 

Rajesh  VU3RHU
Check DC and RF voltages on the finals, then backwards in the signal path 
to see where the RF is present versus where it is missing.

You can use a simple diode type RF probe to trace RF signals and a DVM 
to check DC voltages.



Arv  K7HKL


On Fri, Oct 16, 2020 at 1:45 PM rajesh huddar <pumerah@...> wrote:
Hi, my Ubitx V3 also has no TX. Rx works fine. The unit is calibrated.
Have replaced the IRF510. But still no TX.
What else needs to be checked.

Thanks

Rajesh
VU3RHU

On Wed, 14 Oct 2020, 07:44 Praba Karan, <vu3dxr@...> wrote:
Thanks all.
Sarmaji vu2zmv helped me to identify the issue. Broken gate and drain legs of left MOSFET is the issue. Refer picture attached. Sarmaji adviced me to use existing mosfet by soldering broken legs.  

On Tue 13 Oct, 2020, 11:54 PM Jonas Sanamon, <sanamon@...> wrote:
The bias pots are named RV2 and RV3.
image.png

Regards, Jonas


Den tis 13 okt. 2020 kl 19:23 skrev Praba Karan <vu3dxr@...>:
I mean bottom one of two square pots.

On Tue 13 Oct, 2020, 10:36 PM Jonas Sanamon, <sanamon@...> wrote:
Hi Praba,

I suspect that the pot you refer to as bottom pot is the drive level adjustment. 
The bias pots are of same type but the drive level pot is of a different type in my v3

regards, 
Jonas - SM4VEY

13 okt. 2020 kl. 19:02 skrev Praba Karan <vu3dxr@...>:

Please clarify whether bottom pot bias pairing with left side MOSFET?

I noted 0.9 V only on tab of left MOSFET. However during PTT, 3.6V noted in gate. Similiarly, anticlockwise movement of bottom pot do not vary current drawn.


Re: Ubitx V3 - No tx issue #v3

David Nelson
 

check that q90 rs not  dead happens when you key another transmitter near ubitx


Re: Ubitx V3 - No tx issue #v3

rajesh huddar
 

Hi, my Ubitx V3 also has no TX. Rx works fine. The unit is calibrated.
Have replaced the IRF510. But still no TX.
What else needs to be checked.

Thanks

Rajesh
VU3RHU

On Wed, 14 Oct 2020, 07:44 Praba Karan, <vu3dxr@...> wrote:
Thanks all.
Sarmaji vu2zmv helped me to identify the issue. Broken gate and drain legs of left MOSFET is the issue. Refer picture attached. Sarmaji adviced me to use existing mosfet by soldering broken legs.  

On Tue 13 Oct, 2020, 11:54 PM Jonas Sanamon, <sanamon@...> wrote:
The bias pots are named RV2 and RV3.
image.png

Regards, Jonas


Den tis 13 okt. 2020 kl 19:23 skrev Praba Karan <vu3dxr@...>:
I mean bottom one of two square pots.

On Tue 13 Oct, 2020, 10:36 PM Jonas Sanamon, <sanamon@...> wrote:
Hi Praba,

I suspect that the pot you refer to as bottom pot is the drive level adjustment. 
The bias pots are of same type but the drive level pot is of a different type in my v3

regards, 
Jonas - SM4VEY

13 okt. 2020 kl. 19:02 skrev Praba Karan <vu3dxr@...>:

Please clarify whether bottom pot bias pairing with left side MOSFET?

I noted 0.9 V only on tab of left MOSFET. However during PTT, 3.6V noted in gate. Similiarly, anticlockwise movement of bottom pot do not vary current drawn.


uBitx v 6.1 for sale

Grover Cleveland <k7tp@...>
 

After much deliberation I have to sell some radios including my v 6.1 uBitx
This is upgraded with the 2.8" Nextion screen and the latest software in the standard black metal case.
Included is the original mic that has been modified to increase the output (remove resistor, enlarge hole).
Asking $175 including USPS shipping in the U.S.  Other countries at cost.  Paypal only.
No trades please.

Thanks,
K7TP
(write for the Paypal address please it is not the one on QRZ)


Re: Suggestion for the NEW UBITX V7.

Bob Benedict, KD8CGH
 

An old example of a base transceiver with add ins is the Elecraft K2 kit. Options list:
  • KPA100 Amplifier (Kit), ugrades K2 to K2/100
  • KAF2 Audio Filter and Real-Time Clock
  • KSB2 SSB Adapter
  • KNB2 High Performance Noise Blanker
  • K160M 160M and 2nd RX Port
  • KIO2 RS-232 Interface and Aux I/0
  • KAT2 Automatic Antenna Tuner
  • KBT2 Battery
--
  73
    Bob  KD8CGH


Re: memory manager/alignment

Mitchel Rought
 

curt
thanks for the info
I realize it's not much but it still bothers me, getting old I guess


Re: memory manager/alignment

Curt
 

yes - see hfsignals instructions for your particular version.  BTW I discovered mine is 150 Hz off now - maybe seasonal drift.  great news is that for many modes it may not have much impact, except when you respond to a CW spot (we even do this in SKCC) it makes it harder to find the signal (my I still have my original first receiver HR20 -- I don't know how much it drifts but lucky to resolve 1 kHz on the dial. 

73 curt


Re: Yes, My homebrew µBitx now work!!

Gerard
 

Hello Evan, Hello all
I’ve finished turning up the amplifier. I’m going to test the amp and smeter to morrow.
I also ordered BFR transistors to replace the 3904
I took both CMS and TO50 box components.
I will see how I can install all this. I thought to drill a hole from the diameter of the TO 50 at the level of the base and weld the legs. Better see the correspondence of the CMS and weld it on the back side of the circuit. I’ll put some pictures for you.
Good weekend


memory manager/alignment

Mitchel Rought
 

is it possible to change the display frequency through memory manager, after alignment this radio is slightly off, web sdr 7.050.000, this radio 7.049.700, I realize it's not much but still bothers me


Re: Q90 #v3

 

I used the single channel version of these on another project and thought they might be good for the uBITx. https://www.onsemi.com/pub/Collateral/CM1213A-D.PDF They are small but pretty easy to solder to.

Joel
N6ALT


Re: Suggestion for the NEW UBITX V7.

Ken Hansen
 

Jack,

Understand and agree with your points, varying needs are why we have so many choices!

I want to correct a typo in my previous email - the IC-705 (not the IC-7300 as I incorrectly wrote) can receive NWS VHF weather broadcasts.

Ken, N2VIP 

On Oct 16, 2020, at 08:01, Jack, W8TEE via groups.io <jjpurdum@...> wrote:


Hi Ken:

There are a lot of things in the 705 that I'd like to have...especially the larger screen...but I can live without them for now. Actually, one of the things that pushed me over the edge on the G90 was the "rumor" that Xeigu will be releasing an API (Application Programmer's Interface) for the G90. My goal is to have a 5"-7" panadapter display that I can run independent of any PC/laptop/tablet. I know it can be done because they have the GSOC doing that right now. However, I can't see dropping over $500 for it. I'm pretty sure I can handle the software end of that journey...the hardware, not so much. I envy talented people like Pete Juliano, Farhan, and Hans who capture both talents with an equal grasp. I'm just hoping I don't run out of sand in the hourglass before I get that done!

Jack, W8TEE

On Friday, October 16, 2020, 1:55:33 AM EDT, Ken Hansen <ken@...> wrote:


Jack,

I can't justify $1,200 US for the IC-705 compared with the $450 Chinese radios, but as a new owner of one, I can tell you it is a portable, battery-operated IC-7300 with the big screen, great receiver, polished interface PLUS  144/430 and D-Star. It's design is so similar to the IC-7300 that I was on the air within minutes, and it will be interesting to see how the WiFi and Bluetooth interfaces get used going forward.

And by adding an $80 LiFePO4 battery, RF output jumps from 5 watts to 10 watts.

Icom was gunning for the Elecraft QRP market, and pretty much hit the Mark in my opinion.

Over time, the price will drop (see the price history of the IC-7300 and other recent Icom radios), but it has a solid feature set. I described the radio to a friend who said 'I have an FT-817 that I'm happy with'. I replied "I had an FT-817, sold it, then later bought an FT-818, and soon sold it as well. I paid double the going price of the FT-818 for a radio with a 4.3" display, an SDR receiver, a wonderful bandscope, and a USB interface - no regrets." Oh, and the IC-7300 can receive NWS VHF weather broadcasts - that's been a big issue some have with the FT-817/818.

Ken, N2VIP

> On Oct 15, 2020, at 09:28, Jack, W8TEE via groups.io <jjpurdum=yahoo.com@groups.io> wrote:
>
> I really wonder why anyone would drop $1200 for IC-705.






--
Jack, W8TEE


Re: Enclosures

Aaron K5ATG
 

I don't think that they do. Looking at my V6 and looking at the ones on the amateur radio kits website there is a difference that I can see. On my V6 the mic and phone jacks are located under the touch screen and the key jack is under and to the right of the tuner knob. On the amateur radio kits all three jacks are under the screen.



I suppose it would be possible to relocate those items but I am guessing that it is beyond my skill level. However, the uBitX case with the 5 inch LCD has me doing some thinking. 
--
'72
Aaron Scott
QRPARCI# 16443
GQRP# 16389
4SQRP # 1080


Re: Suggestion for the NEW UBITX V7.

Jack, W8TEE
 

Hi Ken:

There are a lot of things in the 705 that I'd like to have...especially the larger screen...but I can live without them for now. Actually, one of the things that pushed me over the edge on the G90 was the "rumor" that Xeigu will be releasing an API (Application Programmer's Interface) for the G90. My goal is to have a 5"-7" panadapter display that I can run independent of any PC/laptop/tablet. I know it can be done because they have the GSOC doing that right now. However, I can't see dropping over $500 for it. I'm pretty sure I can handle the software end of that journey...the hardware, not so much. I envy talented people like Pete Juliano, Farhan, and Hans who capture both talents with an equal grasp. I'm just hoping I don't run out of sand in the hourglass before I get that done!

Jack, W8TEE

On Friday, October 16, 2020, 1:55:33 AM EDT, Ken Hansen <ken@...> wrote:


Jack,

I can't justify $1,200 US for the IC-705 compared with the $450 Chinese radios, but as a new owner of one, I can tell you it is a portable, battery-operated IC-7300 with the big screen, great receiver, polished interface PLUS  144/430 and D-Star. It's design is so similar to the IC-7300 that I was on the air within minutes, and it will be interesting to see how the WiFi and Bluetooth interfaces get used going forward.

And by adding an $80 LiFePO4 battery, RF output jumps from 5 watts to 10 watts.

Icom was gunning for the Elecraft QRP market, and pretty much hit the Mark in my opinion.

Over time, the price will drop (see the price history of the IC-7300 and other recent Icom radios), but it has a solid feature set. I described the radio to a friend who said 'I have an FT-817 that I'm happy with'. I replied "I had an FT-817, sold it, then later bought an FT-818, and soon sold it as well. I paid double the going price of the FT-818 for a radio with a 4.3" display, an SDR receiver, a wonderful bandscope, and a USB interface - no regrets." Oh, and the IC-7300 can receive NWS VHF weather broadcasts - that's been a big issue some have with the FT-817/818.

Ken, N2VIP

> On Oct 15, 2020, at 09:28, Jack, W8TEE via groups.io <jjpurdum=yahoo.com@groups.io> wrote:
>
> I really wonder why anyone would drop $1200 for IC-705.






--
Jack, W8TEE


Re: Noisy RX on ubitx v5 #ubitx-help #v5 #bfo #filters #noise

Jonas Sanamon
 

Hi George,

I would suggest looking at the S-meter while removing power to the PAM8610 amplifier module. 
I've also been playing with using a Class D audio amplifier in my V.4 uBitX, but so far I've not been happy with it. I also tried to install it directly onto the speaker for minimum speaker cable length, and it got better but it seems the amp+speaker is too close to the uBitx board because I can hear the hiss increase as I put the lid in place.
Thinking of using LM386 instead now. I guess signals with square edges should be kept away from HF receivers :-)

Regards, Jonas


Den fre 16 okt. 2020 kl 00:56 skrev George Metaxas via groups.io <gm_rann=yahoo.gr@groups.io>:

Hi again, I have a small update on the excessive noise that you may have noticed in the audio samples. The reason for that is that my speaker is connected to the PAM8610 amplifier board using two-wire shielded audio cable and the shield is grounded on the aluminum case only on one end, close to the speaker, the other one left floating. I connected the shield of that cable to the case, close to PAM8610, and now the noise has been suppressed even more. KD8CEC firmware displays S5-6 after that mod;before that, I had noticed that noise resulted to S9 or even more, masking audio from stations. 
BTW, although slightly off-topic, are there any suggestions for a common-mode filter inside the ubitx case? 
_

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