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Re: Ashhar, thank you

[email protected]
 

Ashhar,

I have to agree with many others. ?I never had an HF transceiver mainly due to 1) cost and 2) desire to experiment. ?Although I have not assembled mine yet, I am looking forward to it. ?Thank you for providing this opportunity to the Ham community and my personal thanks for making a great kit at a great price!

Gene

N2IJF?
Greek SI5351 board. $8.90 USD

Lawrence Macionski
 

My friend Makis, SV1AFN? in Greece ...sent me an email to one of his newest offerings...


He is offering it for $8.90.. he also has other items of interest.. I previously purchased his VHF transceiver board which is based on a DRA818V..

I have played with it and a raspberry pi? for PACKET but an arduino and his DRA818V transceiver board makes a neat next project.. A Tech Class QRP semi kit..

de W8LM

ARRL Life member - licensed 50 years
Re: Display Contrast Adjustment

Ed Vignati
 

Thank you, I did it and it works Great!

Eddie kj4fgi

On Fri, Feb 17, 2017 at 8:20 PM, Don Cantrell via Groups.Io <nd6t_6@...> wrote:

Eddie,

You could but be sure to include at least a 100 ohm resistor in series with it to prevent over current. This is brightness, not contrast. A 1K would be OK.
Re: Ashhar, thank you

 

Well, Ash, Look what happened, spontaneously. I guess if you work hard enough...

Guys: there is a nice critique on the yahoo EMRFD group about the BITX
from Allison, KB1GMX (Feb 17). Look it up and pay attention to what she says.
These are the words of a true master.

john
AD5YE
Re: Display Contrast Adjustment

 

Eddie,

You could but be sure to include at least a 100 ohm resistor in series with it to prevent over current. This is brightness, not contrast. A 1K would be OK.
Re: AD 9850 DDS VFO ON BANGGOOD

 

You can easily build what you want. Use a Nano, a AD9850 board,
a decent encoder, a display, and a few buttons.

You can easily get the Ladderline code (q.v.) to work.

I note that the e-bay device claims a 0-55 MHz range.
You will be lucky to get 1-30 MHz with any decent results.
Jack is right, This thing is at least 2x expensive for what you get.
The nicest thing about it is the pre-made pc board.

You will have to learn about how to make and operate it.
That's a good thing.

john
AD5YE
Re: 10 turn pot question

 

No. Note that 10-turn pots usually have a different connection that 1-turn pots.
The 1-turn pots have the wiper connected to the middle terminal; many 10-turn
pots have the wiper connected to the end terminal. The simplest thing to do is
measure resistance. Two terminals will show the total resistance and the third
will vary from 0 to max with respect to one of the other terminals.

Once you have determined which is the proper termination, connect you wires
for the tune pot in that configuration in place of the old one. Then you should get
more or less identical results. Note that if the tuning is reversed, i.e., if it goes down
in frequency while turning clockwise, then mereml turn the plugin around. What you
are doing is reversing the positive and ground leads. The wiper should be
connected to the center lead.

So connect them 1)one end positive 2)center to wiper 3)one end ground.
If the tuning is reversed, swap the outer leads. This is what Arv is saying
in more words.

john
AD5YE
Display Contrast Adjustment

Ed Vignati
 

Don, ND6T in his hacks ?statement:?I brought the brightness of my BITX??LCD down by replacing the 110 ohm ballast resistor for that LED??with a 470 ohm unit.

Can you put a potentiometer?in place of replacing the resistor and if so what pot would I use 1K, 10K, ect?

Thanks

? ? ? ? ? ? ?Eddie kj4fgi
Re: 10 turn pot question

 

¿ªÔÆÌåÓý

Thanks Arv.?

Do I ignore the 3rd lead on the board and connect to a chassis ground?

Bob

On Feb 17, 2017, at 4:52 PM, Arv Evans <arvid.evans@...> wrote:

Bob K1OG

How the pot is connected is critical.? One end of the pot must go to ground.? The opposite
end must go to the regulated +9 volts.? The wiper must be connected to the center pin on
the TUNING connector.? When connected properly you should be able to connect a DC
voltmeter between ground and the center pin on the TUNING connector and see the voltage
change from 0 to 9 volts as you rotate the knob.

Arv? K7HKL
_._


On Fri, Feb 17, 2017 at 1:44 PM, Robert cutter <ki0gqrp@...> wrote:
My 40 with stock 10k pot works and I have several Q's. I get about 200 KHz tuning.

When I substitute the 10 turn 10k Bourne pot I get only 2 KHz tuning.? Both pots measure 0-10 Ohms.? I have tried various wiring combinations but am stumped.

72, Bob KI0G
Re: 10 turn pot question

 

Bob K1OG

How the pot is connected is critical.? One end of the pot must go to ground.? The opposite
end must go to the regulated +9 volts.? The wiper must be connected to the center pin on
the TUNING connector.? When connected properly you should be able to connect a DC
voltmeter between ground and the center pin on the TUNING connector and see the voltage
change from 0 to 9 volts as you rotate the knob.

Arv? K7HKL
_._


On Fri, Feb 17, 2017 at 1:44 PM, Robert cutter <ki0gqrp@...> wrote:
My 40 with stock 10k pot works and I have several Q's. I get about 200 KHz tuning.

When I substitute the 10 turn 10k Bourne pot I get only 2 KHz tuning.? Both pots measure 0-10 Ohms.? I have tried various wiring combinations but am stumped.

72, Bob KI0G
Re: AD 9850 DDS VFO ON BANGGOOD

 

Hi thanks for the quick reply. The noise I get when tuning is one thing the steps I would like to control be it a 100Khz 10Khz or even 1Khz steps an rit function as well would be nice. I think the AD9850 would let me do all that and maybe more. I don't know much about this sort of thing sorry. Mark 2W0JMK

Re: AD 9850 DDS VFO ON BANGGOOD

Jack Purdum
 

Way too expensive for what you get. What don't you like about the one you have?

Jack, W8TEE


From: Mark via Groups.Io <mark2w0jmk@...>
To: [email protected]
Sent: Friday, February 17, 2017 4:44 PM
Subject: [BITX20] AD 9850 DDS VFO ON BANGGOOD

Hi all my first post on here and may I say what a great place to be.
I have a Bitx40 and was wondering if adding this dds would work better than the one supplyed with the kit.
Thanks Mark 2W0JMK
AD 9850 DDS VFO ON BANGGOOD

 

Hi all my first post on here and may I say what a great place to be.

I have a Bitx40 and was wondering if adding this dds would work better than the one supplyed with the kit.

Thanks Mark 2W0JMK
Re: 10 turn pot question

 

That should read "0-10k Ohms".

On Feb 17, 2017, at 2:44 PM, Robert cutter <ki0gqrp@...> wrote:

My 40 with stock 10k pot works and I have several Q's. I get about 200 KHz tuning.

When I substitute the 10 turn 10k Bourne pot I get only 2 KHz tuning. Both pots measure 0-10 Ohms. I have tried various wiring combinations but am stumped.

72, Bob KI0G

10 turn pot question

 

My 40 with stock 10k pot works and I have several Q's. I get about 200 KHz tuning.

When I substitute the 10 turn 10k Bourne pot I get only 2 KHz tuning. Both pots measure 0-10 Ohms. I have tried various wiring combinations but am stumped.

72, Bob KI0G
Re: Ashhar, thank you

 

Guess we'll just have to wait for the Hammy's.

--
Ryan Flowers KC7RYS?
Re: Looking for Knobs

 

Thanks Gents! I actually got some on the Facebook group. If I didn't, I was just going to buy 10 and then replace the volume pot with a standard 1/4" knurled shafted pot and wire in a separate power switch.?
--
Ryan Flowers KC7RYS?
Re: Ashhar, thank you

Baruch Atta
 

Well, if there was a Ham Radio Oscars, I would nominate Ashhar!

On Fri, Feb 17, 2017 at 10:27 AM, Ed Vignati <kj4fgi@...> wrote:
Oh yea , did we forgot the word ....Modest....

On Fri, Feb 17, 2017 at 9:56 AM, Ashhar Farhan <farhanbox@...> wrote:

Guys,
Stop please. It is embarrassing. I wanted this as badly as you all did. I bought three myself. i haven't had the time yet.. I want to listen to the Oscars with it. it should be easy to tweak it with a different band pass and a BFR92 in place of the front end rf amp...

On 17 Feb 2017 8:15 p.m., "Richard Andrew Knack via Groups.Io" <ihc73scout2=yahoo.com@groups.io> wrote:
Yes, thank you very much Mr. Farhan! I miss the old days of Heathkit and Ten Tec selling reasonably priced (and not so reasonably priced) kits for ham radio equipment. Kits for HF transceivers, except the rock-bound Chinese QRP CW kits, tend to be very expensive for the most part, especially on a factory worker's wages (at least where I live). While I already have a couple of operational HF transceivers, I am once again experiencing the joy that comes from a "do-it-yourself" project. Keep up the good work!

Rich
KC8MWG


On Friday, February 17, 2017 9:24 AM, Baruch Atta <baruchatta@...> wrote:


Ashhar
Yes, thanks for the kit and for the valuable lessons in electronics.? I saw first hand the effects of the changes that I made (mostly to the VFO). ? ?I wouldn't try this on a "big rig" for fear of royally screwing up.? But I am dedicated to getting the BITX working the way I want.? Many happy hours of puttering around with the board. ?
I wonder if there is a Ham Radio Karma ? ?
TNX 73, JOE W3TTT ?

On Thu, Feb 16, 2017 at 7:08 AM, Ed Vignati <kj4fgi@...> wrote:
I just want to say thank you, you made a kit affordable to everyone.
You undertook the design, giving woman work by winding toroids and other parts of the kit.
You took your own personal time to not only design the radio
you had to design the board, spend your time trying to find a manufacturer to mass produce the boards at an affordable price.
Organize the workforce to assemble and pack the kits, checking each board before it goes out.
Spent your personal time that could be spent with your family to think of us , and I copy and pasted your quote:
?to encourage people all over the world to get more active in amateur radio, analog electronics and self-learning. Building and modifying radios is a great education. Lack of access to elmers and and radio builders' community, absence of test equipment : all impede the spread of homebrewing. With the BITX40, we hope to recover that ground and encourage more and more people to get on air, modify, experiment, build and learn. So, go head, make that mod you wanted to.

We all know that you are not making a profit especially when shipping is included. ?So, I just want to say Thank You!

I also know there are a lot of Hams that are saying Thank You

Look at the activity in this group, a lot of Happy Hams!

Thank you and God Bless,

and from all of the Ham Radio Community to you, a Big Thank You!
???????????????????????? Eddie ¨C kj4fgi
Re: Ashhar, thank you

Ed Vignati
 

Oh yea , did we forgot the word ....Modest....

On Fri, Feb 17, 2017 at 9:56 AM, Ashhar Farhan <farhanbox@...> wrote:

Guys,
Stop please. It is embarrassing. I wanted this as badly as you all did. I bought three myself. i haven't had the time yet.. I want to listen to the Oscars with it. it should be easy to tweak it with a different band pass and a BFR92 in place of the front end rf amp...

On 17 Feb 2017 8:15 p.m., "Richard Andrew Knack via Groups.Io" <ihc73scout2=yahoo.com@groups.io> wrote:
Yes, thank you very much Mr. Farhan! I miss the old days of Heathkit and Ten Tec selling reasonably priced (and not so reasonably priced) kits for ham radio equipment. Kits for HF transceivers, except the rock-bound Chinese QRP CW kits, tend to be very expensive for the most part, especially on a factory worker's wages (at least where I live). While I already have a couple of operational HF transceivers, I am once again experiencing the joy that comes from a "do-it-yourself" project. Keep up the good work!

Rich
KC8MWG


On Friday, February 17, 2017 9:24 AM, Baruch Atta <baruchatta@...> wrote:


Ashhar
Yes, thanks for the kit and for the valuable lessons in electronics.? I saw first hand the effects of the changes that I made (mostly to the VFO). ? ?I wouldn't try this on a "big rig" for fear of royally screwing up.? But I am dedicated to getting the BITX working the way I want.? Many happy hours of puttering around with the board. ?
I wonder if there is a Ham Radio Karma ? ?
TNX 73, JOE W3TTT ?

On Thu, Feb 16, 2017 at 7:08 AM, Ed Vignati <kj4fgi@...> wrote:
I just want to say thank you, you made a kit affordable to everyone.
You undertook the design, giving woman work by winding toroids and other parts of the kit.
You took your own personal time to not only design the radio
you had to design the board, spend your time trying to find a manufacturer to mass produce the boards at an affordable price.
Organize the workforce to assemble and pack the kits, checking each board before it goes out.
Spent your personal time that could be spent with your family to think of us , and I copy and pasted your quote:
?to encourage people all over the world to get more active in amateur radio, analog electronics and self-learning. Building and modifying radios is a great education. Lack of access to elmers and and radio builders' community, absence of test equipment : all impede the spread of homebrewing. With the BITX40, we hope to recover that ground and encourage more and more people to get on air, modify, experiment, build and learn. So, go head, make that mod you wanted to.

We all know that you are not making a profit especially when shipping is included. ?So, I just want to say Thank You!

I also know there are a lot of Hams that are saying Thank You

Look at the activity in this group, a lot of Happy Hams!

Thank you and God Bless,

and from all of the Ham Radio Community to you, a Big Thank You!
???????????????????????? Eddie ¨C kj4fgi
Re: Ashhar, thank you

 

Guys,
Stop please. It is embarrassing. I wanted this as badly as you all did. I bought three myself. i haven't had the time yet.. I want to listen to the Oscars with it. it should be easy to tweak it with a different band pass and a BFR92 in place of the front end rf amp...

On 17 Feb 2017 8:15 p.m., "Richard Andrew Knack via Groups.Io" <ihc73scout2=[email protected]> wrote:

Yes, thank you very much Mr. Farhan! I miss the old days of Heathkit and Ten Tec selling reasonably priced (and not so reasonably priced) kits for ham radio equipment. Kits for HF transceivers, except the rock-bound Chinese QRP CW kits, tend to be very expensive for the most part, especially on a factory worker's wages (at least where I live). While I already have a couple of operational HF transceivers, I am once again experiencing the joy that comes from a "do-it-yourself" project. Keep up the good work!

Rich
KC8MWG


On Friday, February 17, 2017 9:24 AM, Baruch Atta <baruchatta@...> wrote:


Ashhar
Yes, thanks for the kit and for the valuable lessons in electronics.? I saw first hand the effects of the changes that I made (mostly to the VFO). ? ?I wouldn't try this on a "big rig" for fear of royally screwing up.? But I am dedicated to getting the BITX working the way I want.? Many happy hours of puttering around with the board. ?
I wonder if there is a Ham Radio Karma ? ?
TNX 73, JOE W3TTT ?

On Thu, Feb 16, 2017 at 7:08 AM, Ed Vignati <kj4fgi@...> wrote:
I just want to say thank you, you made a kit affordable to everyone.
You undertook the design, giving woman work by winding toroids and other parts of the kit.
You took your own personal time to not only design the radio
you had to design the board, spend your time trying to find a manufacturer to mass produce the boards at an affordable price.
Organize the workforce to assemble and pack the kits, checking each board before it goes out.
Spent your personal time that could be spent with your family to think of us , and I copy and pasted your quote:
?to encourage people all over the world to get more active in amateur radio, analog electronics and self-learning. Building and modifying radios is a great education. Lack of access to elmers and and radio builders' community, absence of test equipment : all impede the spread of homebrewing. With the BITX40, we hope to recover that ground and encourage more and more people to get on air, modify, experiment, build and learn. So, go head, make that mod you wanted to.

We all know that you are not making a profit especially when shipping is included. ?So, I just want to say Thank You!

I also know there are a lot of Hams that are saying Thank You

Look at the activity in this group, a lot of Happy Hams!

Thank you and God Bless,

and from all of the Ham Radio Community to you, a Big Thank You!
???????????????????????? Eddie ¨C kj4fgi
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