are there any plans in place for a v5 uBitx?
need to know if I need to startpitting pennies back to purchase it.
--
72 and God bless
KD4EPG
|
We don't actually use the onboard switch anymore. We have gone to a separate toggle switch for power, mainly because the rig then "comes up" at the last volume level. That said, our needs are likely different than most other users because we are still working on the JackAl software, so we are turning it on/off quite a bit during testing (e.g., making sure the configuration data in EEPROM are correct on startup).
My guess is a simple pot and separate switch might actually be less expensive, too. FWIT.
Jack, W8TEE
On Thursday, November 1, 2018, 9:26:56 AM EDT, <davesters@...> wrote:
I am using a 50k double pot without a switch on my 3 bitx radios I ganged the two halves in parallel so they are 25k.? I pulled them out of various other equipment. like old computer speakers.?
|
Re: Harmonics and Relay Replacement
I got them from Digikey in 3 days. Had
to order something else, so shipping charges were not an issue.
On 11/1/2018 6:01 AM, iz oos wrote:
toggle quoted message
Show quoted text
I believe that the replacement with the Axicom relays should be
a must in any case. I hope they will soon arrive... to make some
rudimentary check... bought them on a non-sale price and still
been waiting for weeks... seems like they sold them being
short...
Il 01/nov/2018 00:03, "Gene Nitschke" <genenitschke@...>
ha scritto:
>
> Sorry to ask but I been offline for a few weeks and the
subject seems to have died out (after reading past posts).? So
is there a final solution for the spurs/harmonics for the V3
uBitX?
>
> Axicom replacements (soldered directly to PWB)?
> Axicom replacements with SMD inductors?
> K5BCQ uBITX Relay Switched LPF/BPF board?
> I have an unbuilt V3 that I am not sure if I should even
complete.? I want to be legal but do not have a lot of test
equipment so verification will be difficult.
>
> Thanks,
> Gene N2IJF
>
> ________________________________
> From: [email protected] <[email protected]> on behalf of Raj vu2zap <rajendrakumargg@...>
> Sent: Thursday, October 25, 2018 12:59 AM
> To: [email protected]
>
> Subject: Re: [BITX20] Harmonics and Relay Replacement
> ?
> The before relay pic has slightly degraded performance due
to the relays being mounted on
> sockets. This add a few mm extra length to the leads to the
contact and increases coupling!
>
> The second is Axicom soldered directly on PCB.
>
> With Axicom my boards are perfect on 40 and 80.
>
> Raj
>
> At 24-10-18, you wrote:
>>
>> That's pretty impressive, Raj.
>>
>> Jack, W8TEE
>>
>> On Wednesday, October 24, 2018, 1:06:11 AM EDT, Raj
vu2zap <rajendrakumargg@...>
wrote:
>>
>>
>> Jim,
>>
>> I did? not get much improvement with Axicom in a
socket.. soldering directly to board made a big difference.
>> The harmonic rejection on lower bands was amazing!
>>
>> On one board only 20M is a bit off.
>>
>> Raj
>>
>> Example: the first is stock and 2nd is Axicom. The
second needs to be referenced to -1db to compare to
>> first!
>>
>> ?
>> ?
>>
>> At 23-10-18, you wrote:
>>>
>>> No, I just used the relays.? I was looking for the
simplest approach.? I have several other projects that were on
hold, giving me time to try the relay swap Mike Doty originally
discovered with limited but encouraging results.?
>>>
>>> I've done all I plan on doing regarding the
harmonic reduction.? I shared what I found with the group, got
unjustly accused of being a "phoney" and I now wash my hands of
this part of the project.
>>>
>>> Back to improving the available firmware, displays
and controller hardware.?
>>>
>>> Jim
>
|
I am using a 50k double pot without a switch on my 3 bitx radios I ganged the two halves in parallel so they are 25k.? I pulled them out of various other equipment. like old computer speakers.?
|
if stock firmware is removed, by using CEC firmware,? newer facilities like ATT and IF-S? the issue might arise, due to improper management of ATT and IF-S facilities.
I suppose the reporters may have to mention the firmware and raduino used. There are others who made new? hardware and firmware too.
regards sarma ?vu3zmv
On Thu, Nov 1, 2018 at 4:50 PM < vu2nsk@...> wrote: Sir,
My ubitx v4 also receiving sensitivity is very poor after calibration. The audio is very low. I am planning to add one external Audio Amp.?
Where I purchase? Raduino Board for my ubitx v4 ?
?
|
Sir,
My ubitx v4 also receiving sensitivity is very poor after calibration. The audio is very low. I am planning to add one external Audio Amp.?
Where I purchase? Raduino Board for my ubitx v4 ?
vu2nsk@...
?
|
Re: Harmonics and Relay Replacement
I believe that the replacement with the Axicom relays should be a must in any case. I hope they will soon arrive... to make some rudimentary check... bought them on a non-sale price and still been waiting for weeks... seems like they sold them being short...
Il 01/nov/2018 00:03, "Gene Nitschke" < genenitschke@...> ha scritto:
>
> Sorry to ask but I been offline for a few weeks and the subject seems to have died out (after reading past posts).? So is there a final solution for the spurs/harmonics for the V3 uBitX?
>
> Axicom replacements (soldered directly to PWB)?
> Axicom replacements with SMD inductors?
> K5BCQ uBITX Relay Switched LPF/BPF board?
> I have an unbuilt V3 that I am not sure if I should even complete.? I want to be legal but do not have a lot of test equipment so verification will be difficult.
>
> Thanks,
> Gene N2IJF
>
> ________________________________
> From: [email protected] <[email protected]> on behalf of Raj vu2zap <rajendrakumargg@...>
> Sent: Thursday, October 25, 2018 12:59 AM
> To: [email protected]
>
> Subject: Re: [BITX20] Harmonics and Relay Replacement
> ?
> The before relay pic has slightly degraded performance due to the relays being mounted on
> sockets. This add a few mm extra length to the leads to the contact and increases coupling!
>
> The second is Axicom soldered directly on PCB.
>
> With Axicom my boards are perfect on 40 and 80.
>
> Raj
>
> At 24-10-18, you wrote:
>>
>> That's pretty impressive, Raj.
>>
>> Jack, W8TEE
>>
>> On Wednesday, October 24, 2018, 1:06:11 AM EDT, Raj vu2zap < rajendrakumargg@...> wrote:
>>
>>
>> Jim,
>>
>> I did? not get much improvement with Axicom in a socket.. soldering directly to board made a big difference.
>> The harmonic rejection on lower bands was amazing!
>>
>> On one board only 20M is a bit off.
>>
>> Raj
>>
>> Example: the first is stock and 2nd is Axicom. The second needs to be referenced to -1db to compare to
>> first!
>>
>> ?
>> ?
>>
>> At 23-10-18, you wrote:
>>>
>>> No, I just used the relays.? I was looking for the simplest approach.? I have several other projects that were on hold, giving me time to try the relay swap Mike Doty originally discovered with limited but encouraging results.?
>>>
>>> I've done all I plan on doing regarding the harmonic reduction.? I shared what I found with the group, got unjustly accused of being a "phoney" and I now wash my hands of this part of the project.
>>>
>>> Back to improving the available firmware, displays and controller hardware.?
>>>
>>> Jim
>
|
this certainly looks like an audio problem. these challenges are often difficult to diagnose without a full signal path inspection. do you have a signal generator ? can you hook a small oscillator together for 14.318 MHz or something like that?
- f
On Thu, Nov 1, 2018 at 6:47 AM roger wincer < zedl2rx@...> wrote: Congrats on staying with it for so long. Mine has worked well so far and I have mode several improvements to it. But from what I am reading about other folks problems, I must have got lucky. However my unit still defies all attempts at calibration. The instructions are scattered about the Web in various forms. Which is a huge problem for many people, I think so.
I have two v4 boards that are completely deaf. Haven't spent the time yet to do any tracing.
Like you, I've put this on hold indefinitely.
Dave - AI6K
|
re PM for "by" read buy.? typing too fast here...TEF
|
Mr Trager is so unimpressed he is going to package it up and send it back as is .. a single band SSB receiver.? He is fed up with wasting time and money (full set of? 12 crystals was used to select better ones than those supplied) . The schema does not match what he has. He is "over it " and So am I? though there is a solution - use a semi cond bal modulator for Tx? and direct inject into the Tx transistor and add a Mute mosfet. .... too late. TEF
|
Re: Harmonics and Relay Replacement
One note:
DO NOT put relays in sockets as the performance degrades.
Raj
Hi Gene,
There is no final solution.
So far my conclusions... the harmonics floating around the board is the
cause of the spurs.
Changing the L5/7 reduced the spurs but not the cause which is
harmonics.
Changing 3 relays KT1/2/3 reduces the harmonics dramatically specially on
lower bands.
Lower bands 40/80 can be driven higher without crossing the red
line!
Keep the drive/mic level at where you get 10W on 40M and you should be
kosher
without SMD coils on higher bands.
If you over drive the uBitx on higher bands then you will be in the
red!
Some boards behave a bit different, relays are a good simple mod bet for
now.
Raj
At 01-11-18, you wrote:
toggle quoted message
Show quoted text
Sorry to ask but I been offline
for a few weeks and the subject seems to have died out (after reading
past posts).? So is there a final solution for the spurs/harmonics
for the V3 uBitX?
- Axicom replacements (soldered directly to PWB)?
- Axicom replacements with SMD inductors?
- K5BCQ uBITX Relay Switched LPF/BPF board?
I have an unbuilt V3 that I am not sure if I should even
complete.? I want to be legal but do not have a lot of test
equipment so verification will be difficult.
Thanks,
Gene N2IJF
From: [email protected]
<[email protected]> on behalf of Raj vu2zap
<rajendrakumargg@...>
Sent: Thursday, October 25, 2018 12:59 AM
To: [email protected]
Subject: Re: [BITX20] Harmonics and Relay Replacement
?
The before relay pic has slightly degraded performance due to the relays
being mounted on
sockets. This add a few mm extra length to the leads to the contact and
increases coupling!
The second is Axicom soldered directly on PCB.
With Axicom my boards are perfect on 40 and 80.
Raj
At 24-10-18, you wrote:
That's pretty impressive,
Raj.
Jack, W8TEE
On Wednesday, October 24, 2018, 1:06:11 AM EDT, Raj vu2zap
<rajendrakumargg@...> wrote:
Jim,
I did? not get much improvement with Axicom in a socket.. soldering
directly to board made a big difference.
The harmonic rejection on lower bands was amazing!
On one board only 20M is a bit off.
Raj
Example: the first is stock and 2nd is Axicom. The second needs to be
referenced to -1db to compare to
first!
?
?
At 23-10-18, you wrote:
No, I just used the
relays.? I was looking for the simplest approach.? I have
several other projects that were on hold, giving me time to try the relay
swap Mike Doty originally discovered with limited but encouraging
results.?
I've done all I plan on doing regarding the harmonic reduction.? I
shared what I found with the group, got unjustly accused of being a
"phoney" and I now wash my hands of this part of the
project.
Back to improving the available firmware, displays and controller
hardware.?
Jim
|
Re: Harmonics and Relay Replacement
Hi Gene,
There is no final solution.
So far my conclusions... the harmonics floating around the board is the
cause of the spurs.
Changing the L5/7 reduced the spurs but not the cause which is
harmonics.
Changing 3 relays KT1/2/3 reduces the harmonics dramatically specially on
lower bands.
Lower bands 40/80 can be driven higher without crossing the red
line!
Keep the drive/mic level at where you get 10W on 40M and you should be
kosher
without SMD coils on higher bands.
If you over drive the uBitx on higher bands then you will be in the
red!
Some boards behave a bit different, relays are a good simple mod bet for
now.
Raj
At 01-11-18, you wrote:
toggle quoted message
Show quoted text
Sorry to ask but I been offline
for a few weeks and the subject seems to have died out (after reading
past posts).? So is there a final solution for the spurs/harmonics
for the V3 uBitX?
- Axicom replacements (soldered directly to PWB)?
- Axicom replacements with SMD inductors?
- K5BCQ uBITX Relay Switched LPF/BPF board?
I have an unbuilt V3 that I am not sure if I should even
complete.? I want to be legal but do not have a lot of test
equipment so verification will be difficult.
Thanks,
Gene N2IJF
From: [email protected]
<[email protected]> on behalf of Raj vu2zap
<rajendrakumargg@...>
Sent: Thursday, October 25, 2018 12:59 AM
To: [email protected]
Subject: Re: [BITX20] Harmonics and Relay Replacement
?
The before relay pic has slightly degraded performance due to the relays
being mounted on
sockets. This add a few mm extra length to the leads to the contact and
increases coupling!
The second is Axicom soldered directly on PCB.
With Axicom my boards are perfect on 40 and 80.
Raj
At 24-10-18, you wrote:
That's pretty impressive,
Raj.
Jack, W8TEE
On Wednesday, October 24, 2018, 1:06:11 AM EDT, Raj vu2zap
<rajendrakumargg@...> wrote:
Jim,
I did? not get much improvement with Axicom in a socket.. soldering
directly to board made a big difference.
The harmonic rejection on lower bands was amazing!
On one board only 20M is a bit off.
Raj
Example: the first is stock and 2nd is Axicom. The second needs to be
referenced to -1db to compare to
first!
?
?
At 23-10-18, you wrote:
No, I just used the
relays.? I was looking for the simplest approach.? I have
several other projects that were on hold, giving me time to try the relay
swap Mike Doty originally discovered with limited but encouraging
results.?
I've done all I plan on doing regarding the harmonic reduction.? I
shared what I found with the group, got unjustly accused of being a
"phoney" and I now wash my hands of this part of the
project.
Back to improving the available firmware, displays and controller
hardware.?
Jim
|
|
|
Congrats on staying with it for so long. Mine has worked well so far and I have mode several improvements to it. But from what I am reading about other folks problems, I must have got lucky. However my unit still defies all attempts at calibration. The instructions are scattered about the Web in various forms. Which is a huge problem for many people, I think so.
I have two v4 boards that are completely deaf. Haven't spent the time yet to do any tracing.
Like you, I've put this on hold indefinitely.
Dave - AI6K
|
Re: uBitX CW Sidetone Volume
Part of the mistery solved...
If you remove R253, you can still hear CW side tone on speaker, because Arduino is using PWM pin for generating audio.
That pin behaves like an antenna, and signal from that pin enters receiver and comes to audio amplifier.
Regarding bumping sound... that sound is heard when CW key is pressed, and released (again, TX is OFF).
Tracing the problem, I found that when you cut the connection between CLK#0 pin from Raduino and main board, that sound doesn't exist any more (while pressing CW key).
Disconnecting the other two CLK signals (CLK#1 and CLK#2) doesn't make any difference.
What is so special about CLK#0 that makes bumping sound to appear?
73
Marko YU2MP
|
Re: Harmonics and Relay Replacement
Sorry to ask but I been offline for a few weeks and the subject seems to have died out (after reading past posts).? So is there a final solution
for the spurs/harmonics for the V3 uBitX?
- Axicom replacements (soldered directly to PWB)?
- Axicom replacements with SMD inductors?
- K5BCQ uBITX Relay Switched LPF/BPF board?
I have an unbuilt V3 that I am not sure if I should even complete.? I want to be legal but do not have a lot of test equipment so verification will be difficult.
Thanks,
Gene N2IJF
toggle quoted message
Show quoted text
The before relay pic has slightly degraded performance due to the relays being mounted on
sockets. This add a few mm extra length to the leads to the contact and increases coupling!
The second is Axicom soldered directly on PCB.
With Axicom my boards are perfect on 40 and 80.
Raj
At 24-10-18, you wrote:
That's pretty impressive, Raj.
Jack, W8TEE
On Wednesday, October 24, 2018, 1:06:11 AM EDT, Raj vu2zap <rajendrakumargg@...> wrote:
Jim,
I did? not get much improvement with Axicom in a socket.. soldering directly to board made a big difference.
The harmonic rejection on lower bands was amazing!
On one board only 20M is a bit off.
Raj
Example: the first is stock and 2nd is Axicom. The second needs to be referenced to -1db to compare to
first!
?
?
At 23-10-18, you wrote:
No, I just used the relays.? I was looking for the simplest approach.? I have several other projects that were on hold, giving me time to try the relay swap Mike Doty originally discovered with limited but encouraging
results.?
I've done all I plan on doing regarding the harmonic reduction.? I shared what I found with the group, got unjustly accused of being a "phoney" and I now wash my hands of this part of the project.
Back to improving the available firmware, displays and controller hardware.?
Jim
|
I just ordered a couple of these from Adafruit.
Dave - AI6K
|
Does anyone have a link to a 10K pot I can use for volume control for the uBitx that has power switch. Oddly the one that came with the kit went bad on me. It just freaks out when I touch it and can go from just producing full volume to nothing at all or it just works.
Joe
|
I've got to think about that... I want the person in phone mode to hear my cw. If they're in USB, don't I have to transmit CW-reverse to get into their passband? Ed - aa2mz
|
Thanks, that was it... I think I'd changed its default in the defines but without changing the software version number, the eeprom didn't get updated.
|
_Dave_ AD0B
Raj vu2zap