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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.?
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Re: Straight key
Don Carter
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On Jul 10, 2021, at 11:50 AM, Curt via groups.io <wb8yyy@...> wrote:
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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
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:
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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, |
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 |
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** 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): 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... 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): 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... 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): 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... 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 |
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