Date   
Re: Help! I think I may have just ruined my 9 year old's Chanukah

David Lacey
 

Nail varnish  when dry is an insulator as is modelling dope and various other substances.
The new suggestion of a thin layer of epoxy will work equally well once the "shorted turns"
are separated.
Dave
G4JBE


On 22/12/2017 16:10, tausciam@... wrote:
What is the purpose of the nail varnish?

The reason I may have to rewrap....I'll have to take it out of the case to make sure, but it looks like there may be several strands wrapped on top of each other. On the first one I separated and I will do so on this one if I can

Re: Help! I think I may have just ruined my 9 year old's Chanukah

tausciam@...
 

On Fri, Dec 22, 2017 at 08:10 am, Gordon Gibby wrote:

Being able to test your HF SSB transmitter for voice clarity is important --- but if you OVERLOAD the other receiver you're listening to yourself (with headphones to stop audible feedback) it isn't so good....   


On websdr, there is a station about 20-30 miles away. I usually load up websdr and listen to myself on that station. They're having a little problem with 40 now I think, but I can look for another in range

Not really interested in ARES at this point.

Thanks

Re: Dummy

Michael Hagen
 

It was designed with Bit in Mind.

I saw someone post the QRP Labs one?    So I thought I would show a better one.  ha..

This looked real good on the SA for return loss.

Its perfect for bit,  you never tune long enough to hurt it?  And you can stick it right out the back with the BNC Adaptor.

The biggest cost is the BNC connectors.

Stick in your coffee cup too, to reheat the Java!

I still have the Heathkit Can -Tenna somewhere?  I remember the can rotted out, I had to go to the paint store

and buy a new gallon paint can.  I used to tune the SB220 into it.  I think I put Automatic Transmission Fluid in it.


Mike, WA6ISP



On 12/22/2017 8:04 AM, Jack Purdum via Groups.Io wrote:
Mike:

Or, how about 150W DL with builtin wattmeter for under $20? This was a build our group did a couple of months ago. The lid is shown here. The resistor network sits in a mineral oil bath. The downside is that this is considerably larger than yours and a little more expensive.



Jack, W8TEE




From: Michael Hagen <motdog@...>
To: BITX20@groups.io
Sent: Friday, December 22, 2017 10:59 AM
Subject: Re: [BITX20] Dummy

Hey, speaking of Dummies.  Here is one I came up with.
Its 4 -  3W resistors.  Has RF tap (0602 Component) either for a resistor or Cap.
Shky diode and cap.  Place for LED (0805).  3 Pin Molex for output monitoring.
You will have to fiddle with the values.   Layout has lots of ground plane, both side of the PCB.

And you need the Male BNC Adaptor to go to the back of the Bit.
I got lots of PCB, $4 or Kit $12 (Includes BNC Adaptor, shipping, Paypal) US.

PCB can be shipped in and envelope, but the Kit gets a small box.

email me for more info
73's
Mike, WA6ISP
-- 
Mike Hagen, WA6ISP
10917 Bryant Street
Yucaipa, Ca. 92399
(909) 918-0058
PayPal ID  "MotDog@..."
Mike@...





-- 
Mike Hagen, WA6ISP
10917 Bryant Street
Yucaipa, Ca. 92399
(909) 918-0058
PayPal ID  "MotDog@..."
Mike@...

Re: Dummy

Michael Hagen
 

You can buy the wattmeter IC on eBAY or buy the whole board.  I don't remember, AD?

I think I got the IC for about $1.   I got it to track fairly well from 0 to -40 dBm.

I was using an HP function generator at 10 MHz.   Nice, you can dial in dBm directly.


You would have to make a pi or t pad in front of them.  Reduce the power.

I used the Arduino to read them.

The info is on the net.  Search eBay too.

73's

Mike, WA6ISP


On 12/22/2017 8:12 AM, David Lacey via Groups.Io wrote:
Hi Jack
Very interested in the Wattmeter side of this project, do you have further information circuit diagram etc
on this item or maybe available as a kit??
Dave
G4JBE

On 22/12/2017 16:04, Jack Purdum via Groups.Io wrote:
Mike:

Or, how about 150W DL with builtin wattmeter for under $20? This was a build our group did a couple of months ago. The lid is shown here. The resistor network sits in a mineral oil bath. The downside is that this is considerably larger than yours and a little more expensive.



Jack, W8TEE




-- 
Mike Hagen, WA6ISP
10917 Bryant Street
Yucaipa, Ca. 92399
(909) 918-0058
PayPal ID  "MotDog@..."
Mike@...

Re: [uBit] uBit AM Receiver!

Michael Hagen
 

I am getting an AM station on uBit,  too bad it is a Sports Station, boring!

I think it is AM 830, a monster signal here.

Get this, Freq is 42.914.374 MHz on uBit Display.

Mike, WA6ISP

 
-- 
Mike Hagen, WA6ISP
10917 Bryant Street
Yucaipa, Ca. 92399
(909) 918-0058
PayPal ID  "MotDog@..."
Mike@...

-- 
Mike Hagen, WA6ISP
10917 Bryant Street
Yucaipa, Ca. 92399
(909) 918-0058
PayPal ID  "MotDog@..."
Mike@...

Re: Help! I think I may have just ruined my 9 year old's Chanukah

Arvo W0VRA
 

Are wires touching on BitX (µ or 40) toroids necessarily shorted?  Aren't the elves using enameled wire?

Re: Help! I think I may have just ruined my 9 year old's Chanukah

Gordon Gibby
 

​Wow.....I had never thought of anything like "websdr".....I'll have to look into that.   thanks for the tip!!


It won't be long before you have that coil figured out and with your new diagnostic skills you'll quickly solve other problems as well.   Congrats!!


gordon



From: BITX20@groups.io <BITX20@groups.io> on behalf of tausciam@... <tausciam@...>
Sent: Friday, December 22, 2017 11:14 AM
To: BITX20@groups.io
Subject: Re: [BITX20] Help! I think I may have just ruined my 9 year old's Chanukah
 
On Fri, Dec 22, 2017 at 08:10 am, Gordon Gibby wrote:

Being able to test your HF SSB transmitter for voice clarity is important --- but if you OVERLOAD the other receiver you're listening to yourself (with headphones to stop audible feedback) it isn't so good....   


On websdr, there is a station about 20-30 miles away. I usually load up websdr and listen to myself on that station. They're having a little problem with 40 now I think, but I can look for another in range

Not really interested in ARES at this point.

Thanks

Re: Where goes the PTT switch?

larry copas
 

Hey guys,  THANK YOU!  Very much appreciate all of the help. Good drawings and photos - exactly what I needed.

I feel that I'm on the right track, now. Smoke test, soon.

Tnx agn  es 73   larry  KA7ILH

Re: Dummy

David Lacey
 

I`ll take a google around and see if I can find one. Thanks for the info Mike, I`m thinking they could
be useful!
Dave
G4JBE

On 22/12/2017 16:25, Michael Hagen wrote:

You can buy the wattmeter IC on eBAY or buy the whole board.  I don't remember, AD?

I think I got the IC for about $1.   I got it to track fairly well from 0 to -40 dBm.

I was using an HP function generator at 10 MHz.   Nice, you can dial in dBm directly.


You would have to make a pi or t pad in front of them.  Reduce the power.

I used the Arduino to read them.

The info is on the net.  Search eBay too.

73's

Mike, WA6ISP


On 12/22/2017 8:12 AM, David Lacey via Groups.Io wrote:
Hi Jack
Very interested in the Wattmeter side of this project, do you have further information circuit diagram etc
on this item or maybe available as a kit??
Dave
G4JBE

On 22/12/2017 16:04, Jack Purdum via Groups.Io wrote:
Mike:

Or, how about 150W DL with builtin wattmeter for under $20? This was a build our group did a couple of months ago. The lid is shown here. The resistor network sits in a mineral oil bath. The downside is that this is considerably larger than yours and a little more expensive.



Jack, W8TEE




-- 
Mike Hagen, WA6ISP
10917 Bryant Street
Yucaipa, Ca. 92399
(909) 918-0058
PayPal ID  "MotDog@..."
Mike@...

Re: µBitx Coil Details #ubitx

Arv Evans
 

Brian, KM4MLS

I will let Farhan answer which schematic is correct, but when scratch-building from someone
else's schematic you can use the type of core and inductance value to determine the number
of turns., or the number of turns and core type to determine the inductance.   Using a toroid
calculator makes the job rather easy.

http://toroids.info/

You can also do something similar if converting from one band to another.  Just use the number
or turns and core type to determine the impedance at the original frequency.  Then use that
impedance and the toroid calculator to find the number of turns for the same impedance at the
new frequency.  This is how we built the original BITX17A from a BITX20A and then the BITX40A
from the original BITX20A. 

Using a circuit simulator like LTSpice you can then run a simulated frequency sweep on your
new filter or tuned circuit to make sure the passband is exactly what you expected.

Arv  K7HKL
_._


On Fri, Dec 22, 2017 at 4:23 AM, Brian - KM4MLS <km4mls@...> wrote:
Hello All,
I'm very seriously considering scratch building a µBitx sometime after the holidays as my first homebrew transceiver and I have been reading over the documentation on the website,
After ordering and constructing the Bitx40, I have learned so so much (thank you so much, Farhan. Without the Bitx40, I'd still be clueless about some parts of radio circuitry), and I think I'm ready to attempt my first homebrew transceiver project.

There's just one issue... I've come to a part in the documentation that's not clear to me. I can guess, but I'd like a second opinion.  On the circuit description page for the µBitX, where it gives info on the inductors, There's two entries for L14, L15, and L16.  One says  10 turns on a T30-6 , the other says 14 turns; which is it?  I'm guessing L11, L12, and L13 are supposed to be 10 turns and L14, L15, and L16 are 14 turns.  Is this correct?  If so, I hope Farhan notices this and can correct it.

Thanks,
-Brian, KM4MLS


Re: Status of Orders

Gregory Schippers <kc8hxo2@...>
 

I ordered mine 8:30 AM EST on the 11th. I asked HFSIGNALS if I would
make the first round on the 15th, and was asked to "be patient, and
wait 3-4 days", and they would advise. I waited 5 days, and asked for
an update, and was told it will ship in "2-3 days"..... Hope this
helps some of you with a timeline.

Regards,
Greg, KC8HXO
West Mitten

On Fri, Dec 22, 2017 at 9:18 AM, Arvo KD9HLC via Groups.Io
<arvopl=yahoo.com@groups.io> wrote:
When I ordered my 40 I received no confirmation other than the PayPal
processing like you. The radio arrived three weeks later. I was
uncharacteristically silently patient because of all the nice things people
say about Ashar. That worked for me.

ordering a replacement raduino

David Nelson
 

I think I have zapped the  nano on my bitx 40 raduino. Is it possible to order a replacement raduino board
as it looks pretty near impossible to remove and replace the nano. Thanks  kc2ipx

Re: ordering a replacement raduino

Gordon Gibby
 

​unfortunately I still have not found a way do accomplish that since the upgrades to the web site.....


Ashhar indicated a willingness to fix the web site, but at least on MY browser I still can t find way to do it.   I'd like to buy several....


Gordon




From: BITX20@groups.io <BITX20@groups.io> on behalf of David Nelson <kc2ipx@...>
Sent: Friday, December 22, 2017 12:06 PM
To: BITX20@groups.io
Subject: [BITX20] ordering a replacement raduino
 
I think I have zapped the  nano on my bitx 40 raduino. Is it possible to order a replacement raduino board
as it looks pretty near impossible to remove and replace the nano. Thanks  kc2ipx

Re: Where goes the PTT switch?

Dennis Zabawa
 

Joel,

Read the previous posts in this thread and you will see why the jack is laid out in this manner.

Re: uBitx 12 MHz Crystal Filter transformer terminations

William Londree
 

Hi DuWayne,

Thank you for the fast response. I noticed the third transformer with "x" termination markings and that really hung me up. LOL. It is MAGIC! Now I can put that question away.

I made some dumb assumptions about how it was supposed to work. Thanks again and I hope you have a great Holiday.

Bill

W6SDI

Re: bitx chat

David Arthur
 

Thought I would mention, this chat is still going and has some momentum. 30 people total have logged in at least once, with about 3 or 4 regulars (including myself). As N8DAH mentioned in another thread, he and I figured out how to get him up and running on FT8. He's helping me figure out some problems on my end as well.

Come join us!

https://discord.gg/CrHvWFc

Re: ordering a replacement raduino

Michael Hagen
 

Much Better Raduino,

I also have The RaduinoXP (Mega Pro Based), it is larger, my not fit what you have boxed up?

I still have lots of Raduino X bare PCBs and completed boards. In case you blew up stock Raduino or want to make alternate projects.
I have sold a dozen or so, but ordered 50 PCBs.

For those wanting a Raduino board.
There is a better option than the orginal Raduino board with it Soldered
- in Nano.
RaduinoX  PCB designed to add some features.

I have Lots of Bare PCBs and some assembled and tested.  Lots of Bare PCBS!

Several sold to guys in this group.

I used this board, LCD, and Rotary Encoder to make a nice dedicated RF
signal generator.


1) I wanted to be able to plug Nano in and out, not soldered. I wanted
the USB connect next to the side of the cabinet so I can program without
taking the lid off.  I will make a small hole.

2) Added, diode protection, more filtering and conditioning on the power
input.  Regulator is bolted down.

3) Added a dedicated connector for Rotary Encoder with pullups and
bounce capacitors.

4) Added an I2C connector.

5) I wanted proper Level Shifting to the Si 3V part.  Added FETs and
pullups for that.   Original did not do that.

6) Added D0 and D1 pins on PCB.

7) Kept power and VFO connector on 5P header so no changes to my present
wiring was necessary.

8) Put contrast Pot where you can get to it.

9) Complete documentation.

10) Fits original LCD perfectly.


Take a look if you are interested.
motdog@verizon dot net

Mike, WA6ISP

--
Mike Hagen, WA6ISP
10917 Bryant Street
Yucaipa, Ca. 92399
(909) 918-0058
PayPal ID "MotDog@..."
Mike@...

Re: ordering a replacement raduino

Michael Hagen
 

I have a uBit Raduino to find a home.

It has never been installed, I did plug it into USB.  With LCD too.

$29 Shipped US.


On 12/22/2017 9:28 AM, Michael Hagen wrote:
Much Better Raduino,

I also have The RaduinoXP (Mega Pro Based), it is larger, my not fit what you have boxed up?

I still have lots of Raduino X bare PCBs and completed boards. In case you blew up stock Raduino or want to make alternate projects.
I have sold a dozen or so, but ordered 50 PCBs.

For those wanting a Raduino board.
There is a better option than the orginal Raduino board with it Soldered
- in Nano.
RaduinoX  PCB designed to add some features.

I have Lots of Bare PCBs and some assembled and tested.  Lots of Bare PCBS!

Several sold to guys in this group.

I used this board, LCD, and Rotary Encoder to make a nice dedicated RF
signal generator.


1) I wanted to be able to plug Nano in and out, not soldered. I wanted
the USB connect next to the side of the cabinet so I can program without
taking the lid off.  I will make a small hole.

2) Added, diode protection, more filtering and conditioning on the power
input.  Regulator is bolted down.

3) Added a dedicated connector for Rotary Encoder with pullups and
bounce capacitors.

4) Added an I2C connector.

5) I wanted proper Level Shifting to the Si 3V part.  Added FETs and
pullups for that.   Original did not do that.

6) Added D0 and D1 pins on PCB.

7) Kept power and VFO connector on 5P header so no changes to my present
wiring was necessary.

8) Put contrast Pot where you can get to it.

9) Complete documentation.

10) Fits original LCD perfectly.


Take a look if you are interested.
motdog@verizon dot net

Mike, WA6ISP


-- 
Mike Hagen, WA6ISP
10917 Bryant Street
Yucaipa, Ca. 92399
(909) 918-0058
PayPal ID  "MotDog@..."
Mike@...

Re: Dummy

Vince Vielhaber
 

Are you referring to the AD-8307 ??

Vince.

On 12/22/2017 11:25 AM, Michael Hagen wrote:
You can buy the wattmeter IC on eBAY or buy the whole board. I don't
remember, AD?

I think I got the IC for about $1. I got it to track fairly well from
0 to -40 dBm.

I was using an HP function generator at 10 MHz. Nice, you can dial in
dBm directly.


You would have to make a pi or t pad in front of them. Reduce the power.

I used the Arduino to read them.

The info is on the net. Search eBay too.

73's

Mike, WA6ISP


On 12/22/2017 8:12 AM, David Lacey via Groups.Io wrote:
Hi Jack
Very interested in the Wattmeter side of this project, do you have
further information circuit diagram etc
on this item or maybe available as a kit??
Dave
G4JBE

On 22/12/2017 16:04, Jack Purdum via Groups.Io wrote:
Mike:

Or, how about 150W DL with builtin wattmeter for under $20? This was
a build our group did a couple of months ago. The lid is shown here.
The resistor network sits in a mineral oil bath. The downside is that
this is considerably larger than yours and a little more expensive.

Inline image

Jack, W8TEE

--
Mike Hagen, WA6ISP
10917 Bryant Street
Yucaipa, Ca. 92399
(909) 918-0058
PayPal ID "MotDog@..."
Mike@...

Re: µBitx Coil Details #ubitx

AndyH
 

For what it's worth, Brian, L11 through 22 are low-pass filters and there are a number of ways to do the job.  You could use filters from your favorite source or project - from the WA2EBY linear to QRP-Labs to an ARRL Handbook project.

Enjoy the build - I'm working through one and it's been a lot of fun so far!
Andy, KG5RKP


On Fri, Dec 22, 2017 at 03:23 am, Brian - KM4MLS wrote:
Hello All,
I'm very seriously considering scratch building a µBitx sometime after the holidays as my first homebrew transceiver and I have been reading over the documentation on the website,
After ordering and constructing the Bitx40, I have learned so so much (thank you so much, Farhan. Without the Bitx40, I'd still be clueless about some parts of radio circuitry), and I think I'm ready to attempt my first homebrew transceiver project.

There's just one issue... I've come to a part in the documentation that's not clear to me. I can guess, but I'd like a second opinion.  On the circuit description page for the µBitX, where it gives info on the inductors, There's two entries for L14, L15, and L16.  One says  10 turns on a T30-6 , the other says 14 turns; which is it?  I'm guessing L11, L12, and L13 are supposed to be 10 turns and L14, L15, and L16 are 14 turns.  Is this correct?  If so, I hope Farhan notices this and can correct it.

Thanks,
-Brian, KM4MLS