¿ªÔÆÌåÓý

Date

Re: Straight key

 

Press the tuning knob and then as you turn it you should see various menus. To select a topic press again, then you can scroll through the settings. If all else fails then find a YouTube video. My ubitx is a v4 using stock firmware but each should be similar. You can only communicate with the microcontroller by this main button and knob.?


Re: Straight key

Don Carter
 

¿ªÔÆÌåÓý

Thanks. But Where is the menu?


On Jul 10, 2021, at 11:50 AM, Curt via groups.io <wb8yyy@...> wrote:

?There is a menu setting for choosing keyed or straight key. Step through menus, press the main tuning know to get there, and you will see things to adjust.?

I mostly use my ubitx on straight key, maybe we can cross paths on skcc.?

Curt wb8yyy?


Re: Straight key

 

There is a menu setting for choosing keyed or straight key. Step through menus, press the main tuning know to get there, and you will see things to adjust.?

I mostly use my ubitx on straight key, maybe we can cross paths on skcc.?

Curt wb8yyy?


Straight key

Don Carter
 

When I plug in a straight key, my uBITX transmits a series of dots as long as the key is plugged in. How do I get the reg to properly see a straight key?
KD7QW Seattle


Re: HEY NEW PERSON, yeah you, go check out bitxmap.com and mark your spot in the world

 

The rev1 python scripts have been added to folders section
/g/BITX20/files/AG5TX/bitxmap

A dummy user placed on the Live layer in bitxmap google map
SWL_John-Live Test

Description:
{"DateTime":"2021-07-08T19:11:59.809857Z", "callsign":"SWL_John", "mode":"SSB", "band":"40M", "freq":null, "power":"SWL", "grid":"JJ00aa", "latitude":"-0.0000", "longitude":"00.0000", "note":"testing

The Description is built from data I thought may be useful to share, relative to Live.? It's in a JSON format, so it can easily be machine parsed.
There is a "note" field for user specific comments.

If this approach gains any momentum and is proven robust, the next enhancement would be command line arguments to change name and description parameters.?
I need to learn how to do this in Python.? (had I done this in PERL, it would have been done already)

Rgds,
Gary


Re: Interfere local Broadcasting radio station

 

OM Abhrajit

Wonderful news that alignment addressed it. People here will debate agc forever, it works fine without it, but I added a simple LED and photoresistor agc circuit that helps when tuning across the band. Enjoy the nice transceiver.?

Curt


Re: Interfere local Broadcasting radio station

 

Something from long ago ¡­ the first time I installed my shack at this QTH in about 1990, I put up a sky wave loop for 80M. Surprise, the 50kW AM BCB station a couple of miles down the road ¡ª on 1300 kHz ¡ª wiped me out on ALL HF bands. I calculated what their third harmonic was at my QTH and checked their legal limit. They were legal.

So I went with a vertical antenna instead, rather than put a high-pass BCB filter on the loop.

30 years later, we have improved receiver technology and I have a whole lot more test gear. I might try the loop again. With a BCB notch filter on 1300 this time.

73
Jim N6OTQ


Sent from my quenched-gap spark transmitter.


Re: Audio output is very low

Abhrajit das (vu3yda)
 

Finally, my ubitx v6 RX issue solved, as per VU2ZAP guidance am check voltage in audio section like Q70, R50, R51, after check audio stage am confirm that audio stage is working fine, and TX stage also working fine, after that VU2ZAP told me to check R18, I found that input of R18 voltage is ok but opposite side in R18 have no voltage, then carefully check R18 then found R18 is broken. Then am use a jumper wire in place of R18 and RX is running.?

I think when it is in post office they not handel is carefully, that's why it's happening.?

Thanks to group and special thanks to VU2ZAP. And I am happy for that Hfsignal send me all damage components so special thanks to Hfsignal also.?


On Fri, 9 Jul, 2021, 5:05 pm Support HF Signal, <support@...> wrote:
Hello Deep,

Please send this message and how you worked out the solution on rectifying your?v6 and how OM Raj helped you in the group as everyone else will know the solution. You can also mention?that HF SIgnals helped you with the components.

Thanks and Regards,

Thomas

On Thu, 8 Jul 2021 at 08:24, ABHRAJIT DAS <vu3yda@...> wrote:
Finally, my ubitx v6 RX issue solved, as per VU2ZAP guidance am check voltage in audio section like Q70, R50, R51, after check audio stage am confirm that audio stage is working fine, and TX stage also working fine, after that VU2ZAP told me to check R18, I found that input of R18 voltage is ok but opposite side in R18 have no voltage, then carefully check R18 then found R18 is broken. Then am use a jumper wire in place of R18 and RX is running.?

I think when it is in post office they not handel is carefully, that's why it's happening.?

Thanks to group and special thanks to VU2ZAP


On Wed, 7 Jul, 2021, 4:00 pm ABHRAJIT DAS, <vu3yda@...> wrote:
Sure, here it is.?
Abhrajit Das (VU3YDA)?
2/524 kapasdanga palpara, Hooghly
Post & Dist - Hooghly
Pin - 712103
West Bengal
Mob-7003749797


On Wed, 7 Jul, 2021, 12:20 pm Support HF Signal, <support@...> wrote:
Hello Deep,

Thanks for confirming.

Please send us your address ASAP.

Regards,

Thomas

On Wed, 7 Jul 2021 at 00:28, ABHRAJIT DAS <vu3yda@...> wrote:
Thank you very much, am glad to know that you ar send me those components, no need any others components
Thank you very much.?

On Tue, 6 Jul, 2021, 6:53 pm Support HF Signal, <support@...> wrote:
Hello Deep,

We have been following your issue with your recently acquired V6.?

We are sorry that you had to go through this experience that you went through.

We are also glad that you were able to sort out your issue using discrete components with inputs from the forum and that's what the hobby?of amateur?radio?is all?about. We always feel that others should take a cue from you and start getting involved in homebrewing.

However we shall send you some components across.

Apart from some 2n3904 and some 10 ohm SMDs? do you need any other component?

Please do let us know so that we can send the same across to you once we hear from you.

Thanks and Regards,

Thomas



---------- Forwarded message ---------
From: Abhrajit das (vu3yda) <Vu3yda@...>
Date: Sat, 3 Jul 2021 at 14:27
Subject: [BITX20] Audio output is very low
To: <[email protected]>


Hi, today I received ubitx v6.1 but audio is very low and no difference in noice with antenna and without antenna. It's transmit signal but nothing received. Please suggest what?to do.?

Deep(vu3yda)?



--
Support@HFSignals



--
Support@HFSignals



--
Support@HFSignals


Re: Interfere local Broadcasting radio station

Abhrajit das (vu3yda)
 

Deep

I am happy to inform you all local broadcast interfere problem is solved when I tune frequency properly and BFO also. I noticed after that am not facing this type of problem.?
I think it's solved. If anything happen in future like this I will inform.?
Thank you



On Fri, 9 Jul, 2021, 9:17 pm Evan Hand, <elhandjr@...> wrote:
Hi Mark,

If I understand your situation, this is the second one that I have read about on this board.? That one also had a high RF situation so high that it took out Q90.? It seems these are susceptible to high RF fields.? A good reason to purchase the metal case and then install the protections that have been identified in multiple threads.? Mostly it is diode protection on the receive input and ferrites on the lines into and out of the uBiTx.

73
Evan
AC9TU


Re: Interfere local Broadcasting radio station

 

Hi Mark,

If I understand your situation, this is the second one that I have read about on this board.? That one also had a high RF situation so high that it took out Q90.? It seems these are susceptible to high RF fields.? A good reason to purchase the metal case and then install the protections that have been identified in multiple threads.? Mostly it is diode protection on the receive input and ferrites on the lines into and out of the uBiTx.

73
Evan
AC9TU


Re: Interfere local Broadcasting radio station

 

John,

Thank you for the explanation.? It does make sense when you look at that strong of a signal.? I suspect the AM signal is being rectified by the audio detector and modulating the attenuation.? One simple test is to see if the distortion goes away when the AGC is turned off.

Again, thank you for taking the time to explain.

73
Evan
AC9TU


Re: Interfere local Broadcasting radio station

John Cunliffe W7ZQ
 

Evan,

I installed the filter originally after the AGC. I found I had strange distortions on the bands that I could not explain since the BCB filter I installed looked good on a sweep and had an attenuation >80db with one of the notches tuned to the frequency of the local transmitter(WHAM). I proceeded to probe the line with my spectrum analyzer and discovered that those products were caused in the AGC when my AGC pot (4.7Mohm) that I installed in the off position was in a certain range.I installed it to make the AGC adjustable something that i.m.o. really helps the receive . I think that the distortions are produced in one of the FETs and stem from the very strong signal of WHAM radio. Installing the filter before the AGC solved the problem. It was easy to do using very thin coaxial cable. The problem may or may not show up with the fixed step AGC or with a lower AM station input level.

John
Btw, the Station is so strong here we could hear it in our land line telephone? before we got rid of it and went to cell phone and it is audible in the background of most commercial audio amplifiers.I god rid of my audio system that used cables to the speakers and installed a blue tooth audio system. That solved that problem.


Re: Interfere local Broadcasting radio station

 

I am definitely not discounting the BCI nor the AGC, I will eventually do both.? I was merely sharing an experience I had.? I didn't have broadcast issues and then I did, in two different locations quite a few miles apart. It made sense at my home QTH, but didn't make sense at my remote location. After reflashing, I no longer have the issue at home. I still have the BCI kit, but I'm less frantically installing it.

--
Mark, kb9woo
Milwaukee, WI uBITX v6


Re: Interfere local Broadcasting radio station

 

On Thu, Jul 8, 2021 at 09:43 AM, John Cunliffe W7ZQ wrote:
A high pass filter before the optional AGC is recommended. I have? great success with the filter published in older ARRL handbooks since it permits 160m to fully function. I recommend installing it before the AGC since I have found distortions from strong AM station otherwise. (I have a full power AM station less than 2 miles away) Without the filter, broadcast stations overdrive the wide open input of the radio.?
John,

Would you please help me understand why the AGC should be after the BCI?? At least for the kit-projects AGC and BCI it seems to me that it would not really matter.? The AGC takes its level from the audio and then attenuates the RF coming from the antenna.? The fact that the broadcast signal is removed after the AGC should not really matter.? The attenuation is done based on the audio part of the signal that does get through both.

Putting the BCI after the AGC is the way that kit-projects designed the two add ons.

73
Evan
AC9TU


 

Hola,
I'm sorry is not possible. I do not make any profit from this job, I do it with pleasure but I cannot lose money.
Saludos,
¸é²¹³¾¨®²Ô


Re: Tool boxes

 

We'll have to agree to disagree because everything I read says otherwise. Look at how factory equipment is made. On my radios, tuner, amp, swr meters, external filters etc. the antenna jack is fastened directly to the chassis. They don't run the signal inside the radio first. Once rf gets inside a radio where it's not supposed to be it's hard to stop.

Read up on "the pin 1 problem" if you haven't already done so.

Max


On Thursday, July 8, 2021, 01:54:43 PM CDT, jerry@... <jerry@...> wrote:


On 2021-07-08 11:47, Max via groups.io wrote:
> Sounds like rf maybe coming in through the mike cable. The bigger
> problem is the fact that none of the jacks (mic, keyer, antenna, etc.)
> are grounded to the case BEFORE entering the radio. AS is, I'm not
> sure if the case does much shielding at all. Sorry to say it, but this
> part is a bad design!

** I disagree.? Vehemently.? Connectors should NOT be individually
grounded
to the case.? The case should be grounded to the ground plane in one
spot,
and one spot only.

? ? If you ground the case in multiple places, you risk causing RF
currents
to flow through it.? This can cause the case to act as an antenna,
rather than
as a shield.? For low level audio, it can cause "ground loops".? Same
deal.

? ? ? ? ? ? ? ? ? ? - Jerry KF6VB






Re: Tool boxes

 

On 2021-07-08 11:47, Max via groups.io wrote:
Sounds like rf maybe coming in through the mike cable. The bigger
problem is the fact that none of the jacks (mic, keyer, antenna, etc.)
are grounded to the case BEFORE entering the radio. AS is, I'm not
sure if the case does much shielding at all. Sorry to say it, but this
part is a bad design!
** I disagree. Vehemently. Connectors should NOT be individually grounded
to the case. The case should be grounded to the ground plane in one spot,
and one spot only.

If you ground the case in multiple places, you risk causing RF currents
to flow through it. This can cause the case to act as an antenna, rather than
as a shield. For low level audio, it can cause "ground loops". Same deal.

- Jerry KF6VB


Re: Tool boxes

 

Sounds like rf maybe coming in through the mike cable. The bigger problem is the fact that none of the jacks (mic, keyer, antenna, etc.) are grounded to the case BEFORE entering the radio. AS is, I'm not sure if the case does much shielding at all. Sorry to say it, but this part is a bad design!

Google "the pin 1 problem". It can effect audio, video and of course rf.

Max

On Thursday, July 8, 2021, 01:13:26 PM CDT, Earl Cox via groups.io <kb5uew@...> wrote:


Went camping and had a dipole up above the UBITX V6. When I held the mike tightly, and keyed the transmit, the display started to flicker and sometimes it would lock up. If held with 2 fingers, it would work ok..


Earl Cox? KB5UEW?
Reply or E-mail me at:? kb5uew@...


On Thursday, July 8, 2021, 10:20:01 AM MDT, Jack, W8TEE via groups.io <jjpurdum@...> wrote:


Earl:

Usually I'm by myself running 5W, so RF leakage isn't a problem. When I was trying to convince non-hams that they didn't need to spend a fortune on a rig, I used a clear case to make it easy to see how simple and inexpensive (<$50) the 49-er xcvr kit is even after adding a VFO and LCD display (QST, March, 2016):

Inline image

I've never had an problems using it since there's nothing to interfere with.

Jack, W8TEE

On Thursday, July 8, 2021, 12:07:16 PM EDT, Earl Cox via groups.io <kb5uew@...> wrote:


I like the plexiglass (or Lexan) showing the insides although I am wondering about RF causing problems.

Earl Cox? KB5UEW?
Reply or E-mail me at:? kb5uew@...


On Thursday, July 8, 2021, 09:08:17 AM MDT, Jack, W8TEE via groups.io <jjpurdum@...> wrote:


Great minds...

Inline image

This is Diz's 5 Watter in an Apache case. Since none of the connectors penetrates the case shell, I'm pretty sure this could fall out of my backpack into a lake and be retrieve without water damage. Not shown are the battery, key, antenna, and earphones that can be fit into the case.

Jack, W8TEE


On Thursday, July 8, 2021, 10:17:09 AM EDT, Earl Cox via groups.io <kb5uew@...> wrote:


I bought a medium apache waterproof case, lined the inside with aluminum foil, then set up my QRP kit in it complete with home made antenna.

Earl Cox? KB5UEW?
Reply or E-mail me at:? kb5uew@...


On Thursday, July 8, 2021, 07:31:12 AM MDT, Doug W <dougwilner@...> wrote:


I have one of the small black tool boxes.? The slide out clearish plastic containers in the lid are perfect for holding soldering iron tips and other tiny things that usually end up getting lost in the bottom of boxes and bins.? I paid about $7 for it planning to buy something better when it broke.? Four years later it is still sitting on my bench serving its intended purpose.?
--

--
Jack, W8TEE

--
Jack, W8TEE


Re: Tool boxes

Earl Cox
 

Went camping and had a dipole up above the UBITX V6. When I held the mike tightly, and keyed the transmit, the display started to flicker and sometimes it would lock up. If held with 2 fingers, it would work ok..


Earl Cox? KB5UEW?
Reply or E-mail me at:? kb5uew@...


On Thursday, July 8, 2021, 10:20:01 AM MDT, Jack, W8TEE via groups.io <jjpurdum@...> wrote:


Earl:

Usually I'm by myself running 5W, so RF leakage isn't a problem. When I was trying to convince non-hams that they didn't need to spend a fortune on a rig, I used a clear case to make it easy to see how simple and inexpensive (<$50) the 49-er xcvr kit is even after adding a VFO and LCD display (QST, March, 2016):

Inline image

I've never had an problems using it since there's nothing to interfere with.

Jack, W8TEE

On Thursday, July 8, 2021, 12:07:16 PM EDT, Earl Cox via groups.io <kb5uew@...> wrote:


I like the plexiglass (or Lexan) showing the insides although I am wondering about RF causing problems.

Earl Cox? KB5UEW?
Reply or E-mail me at:? kb5uew@...


On Thursday, July 8, 2021, 09:08:17 AM MDT, Jack, W8TEE via groups.io <jjpurdum@...> wrote:


Great minds...

Inline image

This is Diz's 5 Watter in an Apache case. Since none of the connectors penetrates the case shell, I'm pretty sure this could fall out of my backpack into a lake and be retrieve without water damage. Not shown are the battery, key, antenna, and earphones that can be fit into the case.

Jack, W8TEE


On Thursday, July 8, 2021, 10:17:09 AM EDT, Earl Cox via groups.io <kb5uew@...> wrote:


I bought a medium apache waterproof case, lined the inside with aluminum foil, then set up my QRP kit in it complete with home made antenna.

Earl Cox? KB5UEW?
Reply or E-mail me at:? kb5uew@...


On Thursday, July 8, 2021, 07:31:12 AM MDT, Doug W <dougwilner@...> wrote:


I have one of the small black tool boxes.? The slide out clearish plastic containers in the lid are perfect for holding soldering iron tips and other tiny things that usually end up getting lost in the bottom of boxes and bins.? I paid about $7 for it planning to buy something better when it broke.? Four years later it is still sitting on my bench serving its intended purpose.?
--

--
Jack, W8TEE

--
Jack, W8TEE


Re: Tool boxes

Jack, W8TEE
 

Earl:

Usually I'm by myself running 5W, so RF leakage isn't a problem. When I was trying to convince non-hams that they didn't need to spend a fortune on a rig, I used a clear case to make it easy to see how simple and inexpensive (<$50) the 49-er xcvr kit is even after adding a VFO and LCD display (QST, March, 2016):

Inline image

I've never had an problems using it since there's nothing to interfere with.

Jack, W8TEE

On Thursday, July 8, 2021, 12:07:16 PM EDT, Earl Cox via groups.io <kb5uew@...> wrote:


I like the plexiglass (or Lexan) showing the insides although I am wondering about RF causing problems.

Earl Cox? KB5UEW?
Reply or E-mail me at:? kb5uew@...


On Thursday, July 8, 2021, 09:08:17 AM MDT, Jack, W8TEE via groups.io <jjpurdum@...> wrote:


Great minds...

Inline image

This is Diz's 5 Watter in an Apache case. Since none of the connectors penetrates the case shell, I'm pretty sure this could fall out of my backpack into a lake and be retrieve without water damage. Not shown are the battery, key, antenna, and earphones that can be fit into the case.

Jack, W8TEE


On Thursday, July 8, 2021, 10:17:09 AM EDT, Earl Cox via groups.io <kb5uew@...> wrote:


I bought a medium apache waterproof case, lined the inside with aluminum foil, then set up my QRP kit in it complete with home made antenna.

Earl Cox? KB5UEW?
Reply or E-mail me at:? kb5uew@...


On Thursday, July 8, 2021, 07:31:12 AM MDT, Doug W <dougwilner@...> wrote:


I have one of the small black tool boxes.? The slide out clearish plastic containers in the lid are perfect for holding soldering iron tips and other tiny things that usually end up getting lost in the bottom of boxes and bins.? I paid about $7 for it planning to buy something better when it broke.? Four years later it is still sitting on my bench serving its intended purpose.?
--

--
Jack, W8TEE

--
Jack, W8TEE