Date   
Re: Verifying errors with version 1.27.7

Vic WA4THR
 

In the IDE you have selected Arduino Nano, of course, but are you sure you identified the correct COM port for the Raduino? Since nothing showed up indicating that it was that port on my system, I resorted to going to the System Hardware list, COM and LPT ports, and just seeing what showed up when I plugged the USB cable into the Raduino, then selected that port in the IDE program. I did my first upload maybe a week ago and had similar issues getting going, but it works great now!

=Vic=

Mic Preamp install, bias resistors #ubitx

Nick VK4PP
 

HI Group.
I am about to install an SSM2167 Pre-amp, Should I remove the bias resistor R60(4.7k) and then re-install post amp at say a 2.2k for the lower 5V the amp uses?

IIRC, the SSM2167 Spec sheet  mentions a 2.2k bias resistor for electret mics...
Thanks in advance.
73, Nick VK4PLN

Re: Mica Cap replacements for WA2EBY Filter?

Mark Baldridge
 

I used this paper. https://www.amazon.com/Circuit-Board-Thermal-Transfer-Special/dp/B01CGRL2G0/ 

You print the image in reverse to scale on that stuff, iron it to the copper clad, and then soak in ferric chloride. Getting a good etching mask is where all the trickiness is. I think lots of iron pressure and heat really help.

On Sat, Jan 20, 2018 at 8:03 AM, Jack Purdum via Groups.Io <jjpurdum@...> wrote:
The date etching shows how good the etch was. What did you end up using, from method to etchant?

Jack, W8TEE



From: Mark Baldridge <marktbaldridge@...>
To: BITX20@groups.io
Sent: Saturday, January 20, 2018 1:21 AM
Subject: Re: [BITX20] Mica Cap replacements for WA2EBY Filter?

I just etched the filter board! Not a perfect toner transfer, but not too bad. The traces are solid and pass the beep test. :)



On Fri, Jan 19, 2018 at 10:18 PM, Mvs Sarma <mvssarma@...> wrote:
Jstin, If you make PCB, it could have facity for both throhiole for silver mca and for smd too.

Regards
MVS Sarma
 

On Sat, Jan 20, 2018 at 3:04 AM, Mark Baldridge <marktbaldridge@...> wrote:
This will be great. I plan to order the SMT parts as they are cheap, and then "upgrade" to the mica caps if I need to.

On Thu, Jan 18, 2018 at 9:15 AM, <freefuel@...> wrote:
Hi Mark, I have started to build up two filter boards for this amp, one with mica caps I was lucky enough to find at a local surplus outlet, and another with SMT parts. I'll post the results as soon as I test them. 

-Justin N2TOH 



--




--



Virus-free. www.avast.com




--
Mark Baldridge
608.561.3853

Re: BITX QSO Afternoon/Night, Sunday, January 21, 3PM/7PM Local Time, 7277 kHz in North America, 7177 kHz elsewhere

Tom VE3THR
 

David N8DAH can just make you out about 2x3 at best. Heard K9ABL much better. Poor east west prop right now from Barrie.

Re: Bitx40 blown.

MAc B
 

So, finally I did it - BITX40, diode D& blown (nice light and smoke)

It is "off the shelf" radio - I made it few months ago - and now I take it to upgrade software etc..

Power on - and smoke. but raduino still works.

so I disconnected power connectors from mainboard, rechceked polarity - all OK. Turn on - Raduino is OK.

I dedoldered diode, reconnected power to mainboard - all OK.

Just courious - what happened?

 

MAc

Re: BITX QSO Afternoon/Night, Sunday, January 21, 3PM/7PM Local Time, 7277 kHz in North America, 7177 kHz elsewhere

Tom VE3THR
 

7.277 MHz @ 2116 zulu
Chuck W3FJJ in DE 5x5 in the clear...nice qso with new member to the BITX40 group

Re: BITX QSO Afternoon/Night, Sunday, January 21, 3PM/7PM Local Time, 7277 kHz in North America, 7177 kHz elsewhere

Tom VE3THR
 

heard David and John but couldn't get to the radio...still listening for 4pm round on 7.277 minus the bleed from 7.275

Re: Software support Request for Full QSK BITX40

Gary O'Neil
 

It appears my dwg failed to post. Will attempt ago when I settle in at campground.

Gary, N3GO 

Re: BITX QSO Afternoon/Night, Sunday, January 21, 3PM/7PM Local Time, 7277 kHz in North America, 7177 kHz elsewhere

 

Worked NX2U Mike in TN !
--
David

 N8DAH
Kit-Projects.com

Re: BITX QSO Afternoon/Night, Sunday, January 21, 3PM/7PM Local Time, 7277 kHz in North America, 7177 kHz elsewhere

John P
 

I hear N8DAH!
--
John - WA2FZW

Re: Power Supply Option

David Lacey
 

Dirty DC made for striplights (led`s) noisy as hell I would guess !
Dave

On 21/01/2018 18:10, Rob Snow wrote:
I'm looking at this 12v 30a/360w power supply that was suggested by someone recently.  It has adustable output and runs a whopping $21.49 delivered from Amazon.  If it doesn't suck, it'll be handy to have around.


Re: BITX QSO Afternoon/Night, Sunday, January 21, 3PM/7PM Local Time, 7277 kHz in North America, 7177 kHz elsewhere

John P
 

Calling CQ on 7277. Not hearing anything except a little splatter from 7275.
--
John - WA2FZW

Re: Speaker query #ubitx

Dave Bottom <ars.kd6az@...>
 

The issue with small speakers for communications use is that you want something quite different from HiFi speakers in several aspects.

While I use headphones exclusively for operating, I do like to “read the mail” (listen) while working in the shop. 

The key is proper frequency response, good absorption of sound off the back of the diaphragm to limit distortion caused be the reflections hitting the diaphragm, and proper strength magnet to control the voice coil movement.

For our communications headphones we build a metal frame, Mylar cone driver with Neodymium magnet that provides high sensitivity but huge dynamic range, 200-6000Hz response to cut off noise that is of no value and quite fatiguing to listen to and the Mylar cone (diaphragm) is not disturbed by moisture and temperature changes to give excellent control over the voice coil positioning.

I could make available to the community a kit with a 50mm, 32 Ohm driver, foam dampening and mounting hardware (3mm standoff’s, Screws, lock washers and nuts) 2 mounting points, if enough people are interested. I can make one and show how it could be installed.

 Output can be attenuated even as these are easy to drive and the uBITX has tons of output.

Dave WI6R
Google “radiosport headsets” 


Sent from my iPhone

On Jan 21, 2018, at 10:51 AM, philip yates <phil@...> wrote:

Mine is a 2watt rated ex-Yaesu VR5000 speaker.
8Ω 2w 3inch.

Think you have to take into the baffle effect of the panel that its mounted behind, mine sounds
good, saying that I did plug it into my Yaesu SP-8, decided that the 3inch speaker was far better.

Phil - G7BZD

On Sun, Jan 21, 2018 at 6:47 PM, ohwenzelph via Groups.Io <Ohwenzelph@...> wrote:
On Sun, Jan 21, 2018 at 09:25 am, <tommason56@...> wrote:
Gents. Many thanks for your responses, very much appreciated. 
73.
Tom
M3TEG.
Best speaker:
Impression/suspicion from following this thread for a while is that with the Bitx40v3, which uses a LM386, that people have been happiest when the speaker is not tiny, so maybe 4 to 8 inches would be good, and it seems like 16 ohms might be better than 8.


Nobody mentions how many watts the speaker is rated for so maybe that’s not an issue.


If you do some comparisons and think you have found a definitive solution to the question then please post it. I have tried a bunch of smaller 8 ohm speakers and some are a bit nicer than others but so far have no conclusion as to which direction is best. There is a lot of high pitched sound that I do not need, above 3 kilo hertz, that comes out of my bitx40v3, I have attenuated it some but don’t know where it’s coming from, and I would like to get rid of it at the source.

Good luck!
 
jerry aa1of/6


Re: Power Supply Option

Joe Puma
 

Make sure the brand is mega watt and not the cheap Chinese knockoff. The cheap ones don’t have proper RF filtering and they use cheap fans. 

The fan on my mega watt 26amp was noticeable too and I complained. They sent me a fan that was quieter, less cfm’s but it did the trick. And I’ve been using it with a 100W radio doing digital modes and it hardly works up a sweat. 

Joe
KD2NFC 


Sent from my iPhone

On Jan 21, 2018, at 1:10 PM, Rob Snow <rsnow@...> wrote:

I'm looking at this 12v 30a/360w power supply that was suggested by someone recently.  It has adustable output and runs a whopping $21.49 delivered from Amazon.  If it doesn't suck, it'll be handy to have around.

Re: Verifying errors with version 1.27.7

Arv Evans
 

KC9SGV

"I wish I had some prior Arduino expertise...."

Arduino expertise can easily be had by purchasing a cheap Ebay sourced Arduino NANO and
doing some of your own software for that device.  It is easy to use the "examples" code as basis
for your own digital voltmeters, period counters, frequency counters, audio generators, and
so on. 

Arv  K7HKL
_._


On Sun, Jan 21, 2018 at 10:54 AM, KC9SGV <kc9sgv@...> wrote:
The sketch now compiles after getting some more libraries.
I still get an upload error.

With the BitX40 off, the IDE does not see the com port.
With the BitX40, on, the serial monitor shows the *Si5350 ON, but the IDE returns an upload error after compiling the Sketch successfully.

I wish I had some prior Arduino expertise....
KC9SGV


On Sat, Jan 20, 2018 at 9:04 PM, Vic WA4THR via Groups.Io <vhklein@...> wrote:
You do need to include some libraries or it will return errors. Once that was done in my case, every sketch has compiled and loaded to the Raduino without a hitch.

=Vic=



Re: uBITX woes, feeling disheartened. #ubitx

Chris Herd <zl2tch@...>
 

Hi All

I have a suggestion, note I dont have a uBITX yet, I have one ordered so I cannot test this.

 If you disconnect the PA power at the DC input socket the transmitter wont produce RF.

The path from the antenna to the PA output transformer is DC when the PTT is activated, note the PA transformer end it at earth.

Use a multimeter set to ohms and measure the resistance between ground on the radio board and the antenna output while activating the PTT, it should be very low.

You also need to check the bands that activate the other LOW pass filters.

Hopefully this can help steer the thinking in others.

Best regards

Chris
ZL2TCH 

Re: Verifying errors with version 1.27.7

Jack, W8TEE
 

I'm running Win 7 most of the time and I have this happen, too. Sometimes, unplugging/plugging the USB connectors fixes it. Other times, I have to close the Arduino IDE completely, and reload it. Sometimes I unload the IDE and also unplug the USB connector. Usually, I get an audible sound from the computer when the system finds the port. Other times when it doesn't see it, I get a rapid beep-beep-beep tone telling me it doesn't see it, but knows the connector is connected. If that happens, I go to the Drivers directory of the IDE and run the installer. If it still doesn't work, I do a total reboot of the system. If none of these work, I take a nap.

Jack, W8TEE




From: KC9SGV <kc9sgv@...>
To: BITX20@groups.io
Sent: Sunday, January 21, 2018 12:54 PM
Subject: Re: [BITX20] Verifying errors with version 1.27.7

The sketch now compiles after getting some more libraries.
I still get an upload error.

With the BitX40 off, the IDE does not see the com port.
With the BitX40, on, the serial monitor shows the *Si5350 ON, but the IDE returns an upload error after compiling the Sketch successfully.

I wish I had some prior Arduino expertise....
KC9SGV


On Sat, Jan 20, 2018 at 9:04 PM, Vic WA4THR via Groups.Io <vhklein@...> wrote:
You do need to include some libraries or it will return errors. Once that was done in my case, every sketch has compiled and loaded to the Raduino without a hitch.

=Vic=



Re: Speaker query #ubitx

philip yates
 

Mine is a 2watt rated ex-Yaesu VR5000 speaker.
8Ω 2w 3inch.

Think you have to take into the baffle effect of the panel that its mounted behind, mine sounds
good, saying that I did plug it into my Yaesu SP-8, decided that the 3inch speaker was far better.

Phil - G7BZD

On Sun, Jan 21, 2018 at 6:47 PM, ohwenzelph via Groups.Io <Ohwenzelph@...> wrote:
On Sun, Jan 21, 2018 at 09:25 am, <tommason56@...> wrote:
Gents. Many thanks for your responses, very much appreciated. 
73.
Tom
M3TEG.
Best speaker:
Impression/suspicion from following this thread for a while is that with the Bitx40v3, which uses a LM386, that people have been happiest when the speaker is not tiny, so maybe 4 to 8 inches would be good, and it seems like 16 ohms might be better than 8.


Nobody mentions how many watts the speaker is rated for so maybe that’s not an issue.


If you do some comparisons and think you have found a definitive solution to the question then please post it. I have tried a bunch of smaller 8 ohm speakers and some are a bit nicer than others but so far have no conclusion as to which direction is best. There is a lot of high pitched sound that I do not need, above 3 kilo hertz, that comes out of my bitx40v3, I have attenuated it some but don’t know where it’s coming from, and I would like to get rid of it at the source.

Good luck!
 
jerry aa1of/6


Re: Power Supply Option

Thomas Noel <tnoel@...>
 

There is a company MegaWatt in Santa Clarita California that markets a very similar looking line of power supplies, but they are heavily filtered and regulated. They are twice the price as what you link, but I can personally attest to their quality. There are many knock-off clones marketed from China that are junk from a radio use standpoint.

Thomas Noel
KF7RSF

Re: Speaker query #ubitx

ohwenzelph
 

On Sun, Jan 21, 2018 at 09:25 am, <tommason56@...> wrote:
Gents. Many thanks for your responses, very much appreciated. 
73.
Tom
M3TEG.
Best speaker:
Impression/suspicion from following this thread for a while is that with the Bitx40v3, which uses a LM386, that people have been happiest when the speaker is not tiny, so maybe 4 to 8 inches would be good, and it seems like 16 ohms might be better than 8.


Nobody mentions how many watts the speaker is rated for so maybe that’s not an issue.


If you do some comparisons and think you have found a definitive solution to the question then please post it. I have tried a bunch of smaller 8 ohm speakers and some are a bit nicer than others but so far have no conclusion as to which direction is best. There is a lot of high pitched sound that I do not need, above 3 kilo hertz, that comes out of my bitx40v3, I have attenuated it some but don’t know where it’s coming from, and I would like to get rid of it at the source.

Good luck!
 
jerry aa1of/6