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Re: Raduino v1.10 with CW functionality released
Readme.md seems to be very informative, however I noticed that there is no mention of C91 and C92 removal for better USB sensitivity, right? Did I miss any other hardware change related to v1.10 sketch, besides those Allard listed ih his post few posts above? |
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Re: Shielded /Coax connectors for wiring in BitX40smd
Thomas Noel
开云体育Jerry,Thanks for the ordered list of recommended coax connections. Just what this Dr ordered! You recommended grounding the shield at both ends of each coax link. I’ve seen others recommend only grounding one end. Is this one of those “which brand of oil is the best for my motorcycle” questions, or is there good science behind one answer or the other? Thomas W Noel KF7RSF
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SMD 20M BITX20
Michael Luft
Hello :) Few qustions. This groups started as BITX20 but actualy ?became BITX40. what is wrong with the BITX20? why I cant see any posts concerning the BITX20 hardware? Personaly, 20 Meter band is my favorite, but I cant find enough info about a real SMD BITX20. Any Info will be very apriciated!! :) 73 Mike 4X1LM |
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Re: Shielded /Coax connectors for wiring in BitX40smd
I'm getting by without coax, using the wiring harnesses provided, but I did cut them reasonably short. ? On critical signals I twisted the signal wire with the associated ground wire, perhaps 1 or 2 turns per inch. ?Caps (signal to ground) on both ends of the tuning pot cable are a good idea. ?My antenna cable is about 2" long, I wouldn't want to go much longer without using coax. ?If you use coax, I'd ground the braid on both ends in all cases, the center conductor carries the signal. ?Something like RG178 coax is small and flexible enough. ?Should be able to extract pins from the connectors provided by pressing the springy metal tab at the wire end of the the rectangular window while gently tugging at the wire. ?Then you can solder RG178 directly to those connector pins. I think a conservatively designed commercial rig might use coax for all of the signals below to avoid potential trouble. ?I'm listing them roughly in the order in which I'd consider them critical, opinions will vary. ? ? ? Main board DDS connector to Raduino ? ? Main board to tuning pot middle pin (and 0.1uF caps on both ends) ? ? Main board to antenna connector ? ? Main board to microphone ? ? Main board to volume control center pin ? ? Main board to volume control top pin ? ?? ? ?? On Sat, May 13, 2017 at 01:01 pm, Thomas Noel wrote:
Where are the places that most benefit from shielded connectors linking components? ? |
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Re: BUYING A SPARE SI5351A BOARD
Best bet: ?hfsigs.com sells the Raduino (the Si5351 board plus the Arduino Nano and 2x16 display and appropriate connectors) for $25. If feeling adventerous, could buy the Nano and display off ebay or oddwires.com, etc ? and get an Si5351 breakout board from etherkits.com,?qrp-labs.com, or adafruit.com Jerry On Sat, May 13, 2017 at 07:52 pm, Dale Brooks KG7SSB wrote: Hi Guys, can someone tell me the best place to obtain the SI5351A VFO board that is used in the BITX40 that connects to the Arduino nano. I'd rather play around with the sketch on an outboard unit before I download to the BITX. ? |
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Re: uBITX Questions (fake semiconductors)
while buying on ebay ?one need to check item description. ?if you find? unbranded, new, or some such? under? "manufacturer"? be sure that it is fake. Generally IRF510 wont be fake , while we get lots of fake under RD16HHF1 type. i had attached a sample look out , in case of RD16 and on page 2 you can find the device?? brand correctly indicated and is good. ?RD16HHF1 device would be costly. i had frequently bought from a seller and they were fine. all the best sarma vu3zmv |
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Re: another modified Raduino
Jack Purdum
All: Allard has adopted a more-or-less standard practice of providing the URL for any non-standard IDE libraries used in his code. For example, in his code he has: #include <Wire.h> #include <si5351.h> // https://github.com/etherkit/Si5351Arduino/releases/tag/v2.0.1 The first #include does not provide a URL, which means it is distributed with the standard Arduino IDE. The second directive provides the URL where that library can be found and downloaded. You will need to install that library before you can compile that code. This group's web site has instructions for the proper installation of "external" libraries. Also remember that, once installed, you must shut down and reload the IDE for the new libraries to take effect. Jack, W8TEE From: Arv Evans <arvid.evans@...> To: [email protected] Sent: Saturday, May 13, 2017 5:50 PM Subject: Re: [BITX20] another modified Raduino Michael? OZ9AEW What Si5351A library should I be using? Build options changed, rebuilding all In file included from /home/arv/Server/sketchbook/Bitx_40__Raduino__13_May/Bitx_40__Raduino__13_May.ino:3:0: /home/arv/Server/sketchbook/libraries/Adafruit_Si5351_Library/Adafruit_SI5351.h:44:29: fatal error: Adafruit_Sensor.h: No such file or directory ?#include <Adafruit_Sensor.h> ???????????????????????????? ^ compilation terminated. exit status 1 Error compiling for board Arduino Nano. Obviously it is not the Adafruit library. Arv? K7HKL On Sat, May 13, 2017 at 2:44 PM, OZ9AEW <madsen1960@...> wrote:
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Re: BITX40 - wiring power via volume control
开云体育You may want to use a ON-OFF-ON DPDT switch in place of the volume control switch. This will allow you to put either 12 volts or your choice of final voltage on the Final. Wired as follows ? 1 O???? O 2 3 O???? O 4 5 O???? O 6 ? Wire 12 Volts to pin 3 and selected final voltage to pin 6. Pin 4 goes to the final voltage connector pin 2 goes to the 12 volt connector on the board. Tie together pins 1, 2, and 5 ? v/r Fred W4JLE ? From: [email protected] [mailto:[email protected]] On Behalf Of Dunstan via Groups.Io ? Go easy on me! First post and first homebrew project... Step 2 of the BITX40 wiring up instructions says that 'the DC power from the socket goes to the board ?through the on/off switch on the volume control', but then later in step 2 it says that 'you may route the positive power line through the ON/OFF switch on the volume control' making it sound optional or that it requires some additional configuration. So, if you follow the default instructions in steps 2 and 4, is the DC power routed through the volume control via the PCB board, or do you need to do this yourself by wiring the DC socket to the volume control and then from there to the board? Thanks in advance! |
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Re: BITX40 - wiring power via volume control
开云体育Your choice. Many of us prefer to use a toggle switch for DC power, rather than using the switch on the volume control, to avoid unnecessary wear on the potentiometer. Bill, VK7MX On 14/05/2017 6:07 AM, Dunstan via
Groups.Io wrote:
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Re: Instructions
开云体育Craig, ? Click on the “Wire Up” link at the of the page: ? for instructions. ? 73, Dale? K9NN ? From: [email protected] [mailto:[email protected]] On Behalf Of Craig_hinshaw via Groups.Io ? Just got my bitx-40 and the instructions was not with it, bought an assembled one, but it came with Knobs and the little thing not attached, where do I get the instructions to finish it |
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Re: another modified Raduino
OK now.? I had to do an UPDATE on the Etherkit Si5351A 2.0.1 library. Thanks. _._ |
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Re: Almost finished, for now...
Yup, that worked. I also put in the function button and got it working. I'm loving this radio now! Still have yet to make a contact but am more comfortable with the radio and happy that my skills haven't completely disappeared. Will probably update to 1.10 but am pretty happy where I'm at. My (capacitance) hat is off to you all! Wish your families a happy Mother's Day. Brian, K2BRZ |
Dragan 4O4A
W9ZIM