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Re: First ubitx lsb contact!
Kelly Mabry
I like that Richard!! I used to work for GenCorp Aerojet in Iuka, MS. Our peogram? Manager was out of Redstone Arsenal in Huntsville AL. Thiokol hated me due to all the rework I made them do on nozzle instrumentation. I became an expert on Mil specs and contract requirements. All our measurements were in inches..?
Ok enough off topic!? Thanks for the trip down memory lane..? 73, Kelly K5AID? |
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Re: First ubitx lsb contact!
Joe Puma
¿ªÔÆÌåÓýKelly that¡¯s great. I live in NY and with my end fed half wave antenna that tops off at 35 feet I am able to talk to Florida easily on 20 meters. Last week when we had some slight solar activity I made a contact with Italy on 20 meters,well the guy couldn¡¯t hear me too well on the uBitx so I jumped on my 100w radio to complete the contact. He did hear something on the uBitx.? My uBitx has been modded for a more even power level. On 20 meter I can do 14watts. On 80 it¡¯s 12watt? Joe KD2NFC? On Apr 24, 2019, at 2:54 AM, Kelly Mabry <kmabry2007@...> wrote:
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Re: First ubitx lsb contact!
The US put a man on the moon with a mix of metric and imperial: ? ?? But that doesn't always work out so well: ? ?? I was thinking 175 megaparsecs Jerry, KE7ER On Wed, Apr 24, 2019 at 09:29 AM, RICHARD wrote:
The US put a man on the moon using INCHES ! |
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Re: Audio AVC
Here is my Arduino IDE dual core esp32 audio framework. Mainly just tone generation. I did fir filters with but haven¡¯t uploaded them.
Many libraries work but the esp32 unlike other Arduino processors, doesn¡¯t like to spend a lot of time in interrupt routines (I guess because of rtos). I had to rewrite the ¡°Talkie¡± library because of the interrupt handling. wm6h |
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Re: First ubitx lsb contact!
Laddie
Its not our fault, back in grade school "they said, we would convert to metric before adulthood". I'm 64 and still waiting! Blame the British, imperial kings feet, arms digits and all.
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----- Original Message -----
From: "RICHARD" <k6kwq@...> To: "BITX20" <[email protected]> Sent: Wednesday, April 24, 2019 12:29:40 PM Subject: Re: [BITX20] First ubitx lsb contact! The US put a man on the moon using INCHES ! Sent from Mail<> for Windows 10 ________________________________ From: [email protected] <[email protected]> on behalf of Dexter N Muir <dexy@...> Sent: Tuesday, April 23, 2019 11:05:08 PM To: [email protected] Subject: Re: [BITX20] First ubitx lsb contact! 175m? Barely a city block. 175 mi more like it, 285km! I really despair of US clinging to Imperial measure, when it butchers English language - Metric (NOT METERIC!) is so much easier: 300/f for w/l. 73 de ZL2DEX |
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Re: First ubitx lsb contact!
RICHARD
¿ªÔÆÌåÓýThe US put a man on the moon using INCHES ! ? Sent from for Windows 10 ? From: [email protected] <[email protected]> on behalf of Dexter N Muir <dexy@...>
Sent: Tuesday, April 23, 2019 11:05:08 PM To: [email protected] Subject: Re: [BITX20] First ubitx lsb contact! ?
175m? Barely a city block. 175 mi more like it, 285km! I really despair of US clinging to Imperial measure, when it butchers English language - Metric (NOT METERIC!) is so much easier: 300/f for w/l.
73 de ZL2DEX |
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Re: Kit projects AGC install
Thanks for the response! Kelly I just responded to your email, again apologies for the delay. I have paraphrased below. The only addition I have as of moment is that the castellations that you are soldering to the trace have copper on the bottom. Apply as little heat as needed, they make a solid joint easily. The solder should just start to come up the cup. It does not need to reach the top of the board.? A decent example is in this picture? ? KE2GKB On Wed, Apr 24, 2019, 5:02 AM Playthatbeat Mrdj <playthatbeat303@...> wrote: position the board and mark with a sharpie the spots where You need to expose copper below, then use a small flathead screwdriver, or anything small, flat and hard to scrape away the coating and expose the copper.. You don't need to use much force, just take Your time and get a good strip exposed at each spot. You don't want a sharp point for this, just a hard object. Then tin both the AGC board and the exposed spots with solder, and the rest should just be a matter of adding enough solder to make a good bond, once You have the AGC board aligned in place. Maybe use some masking tape to hold it in place if You have big fingers.. --
Tim Keller - KE2GKB |
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Re: Raduino reinforcement, 3d printed
I printed these for club members with ubitx radios. I don't usually print black. It does terrible outside without being painted. Summer sun will melt it in 5 minutes.
I have had an Anet A8 printer. Paid 153 for it 3 years ago. It isn't expensive to get into. Have 2000 hours of printing out of it. Maybe a couple of dozen rolls of filament. Have tried ABS but didn't like the warm up time. With ABS the bed needs to get to 100 degrees, and the parts seem more likely to warp when cooling so I print with PLA. Be aware that printing 3d is not like printing on a sheet of paper. There are a 100 reasons to fail. It can be from a poorly designed object or a mechanical issue with the filament, dirt or the machine. Just ask anyone who has one. Mine will print happily for a couple hundred hours or more and then something goes haywire and needs to be adjusted. It takes about 40 minutes to print even a small part like the raduino bracket. The real fun isn't the printing but the designing. I use Fusion360, a professional grade software that is available with a free license for the hobby and small business designer. The trick with designing something is that it should be easy to print. I use Repetier Host as a slicing software. Have tried several others but this usually sets up the print best. Once you figure out what you can make you will be amazed. Take a look at thingaverse.com and you might get an idea. It isn't just for radio but most any component that is in a non hot location can be designed. All around our farm we have printed parts and brackets. Go to the hardware store trips have been greatly reduced. |
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Re: Audio AVC
Jack Purdum
We did all that and more with the JackAl board, but it's based on the Teensy 3.6 controller, which isn't cheap. We selected the Teensy because of its excellent audio processing library and still think that was the best choice...at the time. Since then, the ESP32 libraries have expanded, so that's probably a viable alternative. Jack, W8TEE
On Wednesday, April 24, 2019, 9:05:01 AM EDT, wb8lga <cbeener@...> wrote:
Yes I agree ESP32 is up for the Job. When we get Time I'm going to use one for DSP audio filter.? SSB/CW. and a AGC that controls the RF Attenuator .and move the S-Meter/DSP to it also. The ESP32 has enough power to run it all with no other micro's needed. WB8LGA Charles
On 4/23/2019 2:18 AM, MadRadioModder
wrote:
Wow!? Jack is an ESP32 convert! ? ? From:
[email protected] [mailto:[email protected]] On Behalf
Of Jack Purdum via Groups.Io ? Exactly. Consider the ESP32 with 1.3Mb of flash, 350Kb of SRAM, all scooting along at 240Mhz at a price of around $6. It also has two DAC ports. While the DAC ports are only 8 bit, it's better than no DAC. Also, you can program the ESP32 from within the Arduino IDE. So far, I haven't found any libraries that don't work with it. Oh, it also has builtin WIFI and Bluetooth. ? Jack, W8TEE ? On Monday, April 22, 2019, 9:37:05 PM EDT, Jerry Gaffke via Groups.Io <jgaffke@...> wrote: ? ? Doing AGC in
software would incur added delay, especially with
an i2c pot on our beloved little Nano.
-- ¡_. _._ |
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Re: Audio AVC
¿ªÔÆÌåÓýYes I agree ESP32 is up for the Job. When we get Time I'm going to use one for DSP audio filter.? SSB/CW. and a AGC that controls the RF Attenuator .and move the S-Meter/DSP to it also. The ESP32 has enough power to run it all with no other micro's needed. WB8LGA Charles
On 4/23/2019 2:18 AM, MadRadioModder
wrote:
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Re: New file uploaded to [email protected]
Jack Purdum
Agreed; nice job. Note that, on the Arduino Nano and Uno, pins 2 and 3 are the only two pins capable of processing external interrupts. All other pins can process software or timer interrupts generated by the processor itself. If you're designing a Nano/Uno-centric project, it usually a good idea to leave pins 2 and 3 empty just in case you want to add an external interrupt later. Also, pins 0 and 1 are used for the Serial object that communicates with the USB link so, while they can be used as GPIO in a pinch, try to leave them free if you can. Jack, W8TEE
On Wednesday, April 24, 2019, 8:08:48 AM EDT, Tom, wb6b <wb6b@...> wrote:
A great writeup. You have raised the bar for documentation for the rest of to follow. Clever solution to the pseudo encoder interface. Tom, wb6b ? |
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Re: First ubitx lsb contact!
Laurence Oberman
I do a lot of machine shop work as a hobby and I moved to the USA in
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1996 from South Africa. It took a while to get used to inches here in the machine shop. Of course all machines can be used with inches or metric. When on the road its Miles. In the shop its inches, but strangely when doing home projects I use metric tape measures :) KB1HKO On Wed, Apr 24, 2019 at 8:25 AM d balfour <davesters@...> wrote:
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Re: First ubitx lsb contact!
Kelly
175 is a pretty short (hard) skip, kudos to that. I think you might now want to recalibrate your frequency display and you will need to move the bfo back on freq after. I have worked my entire career in both US and Metric units, whichever seems easier or more easily understood for the job at hand. - 73 Dave k0mbt |
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Re: New file uploaded to [email protected]
A great writeup. You have raised the bar for documentation for the rest of to follow.
Clever solution to the pseudo encoder interface. Tom, wb6b ? |
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New file uploaded to [email protected]
[email protected] Notification
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the [email protected] group. File: VB_Software.pdf Uploaded By: Dennis Zabawa Description: You can access this file at the URL: Cheers, |
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Re: Kit projects AGC install
position the board and mark with a sharpie the spots where You need to expose copper below, then use a small flathead screwdriver, or anything small, flat and hard to scrape away the coating and expose the copper.. You don't need to use much force, just take Your time and get a good strip exposed at each spot. You don't want a sharp point for this, just a hard object. Then tin both the AGC board and the exposed spots with solder, and the rest should just be a matter of adding enough solder to make a good bond, once You have the AGC board aligned in place. Maybe use some masking tape to hold it in place if You have big fingers..
I agree that a dremel is not the way to go. they are the Uzi of power tools. look cute, but are utterly useless, unless you like damaging Your fingers and making lots of noise. |
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Kit projects AGC install
Kelly Mabry
Does anybody have any suggestions for how to do the drop in portion of this kit-projects AGC board.. switch is wired up..mounted on front panel.? I am dreading this due to a dremel tool with only high speed rpms and shaky hands.
Would an exacto or a box cutter be acceptable to scrape away the top of the trace to get to copper? It seems this install goes in one general spot with very little room to spare. I will look at it more tomorrow and snap a picture or two to provide more Information about my concerns. Any advice welcomed...? 73, Kelly K5AID? |
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Re: First ubitx lsb contact!
Kelly Mabry
Haha i should have said miles... up to this point, i had not truly worked qrp. The satisfaction of building it, then operating it is awesome. Thank you all for collaborating with me on this project. Your suggestions and advice illustrates what I love about this hobby. So, just few things left to do before I build.... another one. Lol. Well i need to install the AGC mod from kit projects.
73, Kelly K5AID? |
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Re: 18000km
Well done especially considering we are at the lowest end of the cycle! At the highest or so, I guess in 2014, I had a 18000, ZL from Italy, with 3 watts (ILER20 qrp). The amps will still be very useful to hams who, listening to a nearby ham struggling with a qrp, want to show off their 'auxiliary leg'. It is really fascinating how far waves may travel with ridiculous power. Trying QO-100 geostationary sat at 18000km distance I had a QSO with 2w and a grid dish for WiFi (specs of the antenna state I could reach an access point at 56km far...) Il 22/apr/2019 14:26, "Laurence Oberman" <oberman.l@...> ha scritto:
> > Yep, with CW or JT65 (with error correction) you can do a lot with a > very little. > Great job > Congrats > > On Mon, Apr 22, 2019 at 8:22 AM d balfour <davesters@...> wrote: > > > > 10000 miles Excellent. I got a ssb contact with a Australian ham on phone a couple of weeks ago. > > > > I wonder if the yahoos with amps are still going to be going strong when the bands come back. > > > > > > > > > |
digger AB3XU
_Dave_ AD0B