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CW IS PREINSTALLED ???

 

?To: "[email protected]" <[email protected]>
From: r.rking41@...

I HAVE THE BITX40 #460 AND HAVE JUST INSTALLED THE RADUINO VFO.? AFTER INSTALLING THE RADUINO AND CHECKING THINGS? OUT I FOUND THE FOLLOWING:

1. THE UNIT WORKS GREAT ON 40M LSB. I' VE MADE SEVERAL CONTACTS WITH A WINDOM ANTENNA FROM ALABAMA.
2. IF YOU DISCONNECT THE MIKE AND LEAVE THE PTT CONNECTED, KEY UP THE RIG IN THE CW PORTION OF THE BAND.? I CAN HEAR A GOOD SOLID TONE ON MY TEN TEC PEGASUS TRANSCEIVER.? I FOLLOWED THIS TONE ALL THE WAY UP THE BAND.? NO MODS MADE TO THE BITX-20
3. WHEN I RECONNECT THE MIKE AND GO TO THE PHONE PORTION OF 40M, I CAN/HAVE MADE SEVERAL QSOS WITH GOOD REPORTS.
4. WHAT IS GOING ON HERE ?? THE TONE IS BEING MADE IN THE PEGASUS, NOT THE BITX40.
5. WOULD SOMEONE WITH TEST EQUIPMENT AND SCOPE CHECK THIS OUT ?
6. DO WE HAVE CW BY DEFAULT ?

????????????????????????????????????????? 73 RALPH? K1KOB
 

I've been asking about this my self. In the code is function button for different modes and functions. One is CW mode which requires the external use of a transistor to hold PTT for a bit while cw code in sent. Then after a bit it times out, unkeying the PTT.?

That's what I understood from reading the comments in the code. It seems to me if you can put the sound of your CW tone on a certain frequency by an offset so it can be heard by another on that frequency and you can hear them, then you are doing CW.

But the others don't think it's that simple. And I haven't tried it yet. I lost a month of experimentation, and traded it for a month of troubleshooting and repair, just to play with it now.
 

HERE IS SOMETHING ELSE TO PONDER. ?HAVE YOU EVER BUILT ONE OF THOSE "?PIXIE" ?QRP 7MHZ TRANSCEIVERS FOR UNDER FIVE BUCKS?? THEY DON'T HAVE A TONE WHEN YOU TRANSMIT. ?BUT, I'VE MADE MANY CONTACTS WITH A "PIXIE".? HOW ABOUT A LITTLE AUDIO KEYER TONE ONLY WHEN YOU TRANSMIT, SO YOU CAN HEAR YOUR "FIST" TO SEND THAT PERFECT CODE. ?LIKE I SAID IN MY OTHER POST, THE TEN TEC PEGASUS IN CW MODE SOUNDED GOOD TO ME. ?I'VE BEEN DOING CW FOR 57 YEARS AND REALLY DON'T NEED TO HEAR MY "FIST", ONLY ONE THAT NEED TO HEAR THE DITS AND DAHS IT THE RECEIVING HAM.? BY THE WAY THE BITIX DOES RECEIVE CW OK JUST THE WAY IT IS WITH NO MODS.
??????????????????????? 73?? RALPH?? K1KOB
On 02/26/17, John Smith via Groups.Io<johnlinux77@...> wrote:
?

I've been asking about this my self. In the code is function button for different modes and functions. One is CW mode which requires the external use of a transistor to hold PTT for a bit while cw code in sent. Then after a bit it times out, unkeying the PTT.?

That's what I understood from reading the comments in the code. It seems to me if you can put the sound of your CW tone on a certain frequency by an offset so it can be heard by another on that frequency and you can hear them, then you are doing CW.

But the others don't think it's that simple. And I haven't tried it yet. I lost a month of experimentation, and traded it for a month of troubleshooting and repair, just to play with it now.
 

I'm not sure, but my guess is that Ralph is hearing the residual carrier from the BITX when he keys the PTT and listens on another rig.? The carrier is suppressed but it is still there and will be quite noticeable at close range.? As for getting CW going with the Raduino, ND6T has an interesting mod posted on the BTXHACKs blog.?? 73? Bill

On Sunday, February 26, 2017 2:34 PM, John Smith via Groups.Io <johnlinux77@...> wrote:


I've been asking about this my self. In the code is function button for different modes and functions. One is CW mode which requires the external use of a transistor to hold PTT for a bit while cw code in sent. Then after a bit it times out, unkeying the PTT.?
That's what I understood from reading the comments in the code. It seems to me if you can put the sound of your CW tone on a certain frequency by an offset so it can be heard by another on that frequency and you can hear them, then you are doing CW.
But the others don't think it's that simple. And I haven't tried it yet. I lost a month of experimentation, and traded it for a month of troubleshooting and repair, just to play with it now.
 

I had the same issue too, the carrier was not properly suppressed. My
wattmeter was reading about 200mW with PTT on and no modulation. I found
that the balance potentiometer R105 was not adjusted properly. I could
suppress the carrier much better by fiddling with R105 a bit. But 100%
suppression is not possible, there will always be some residual carrier.

73, Allard PE1NWL

On Sun, February 26, 2017 21:20, Bill Meara via Groups.Io wrote:
I'm not sure, but my guess is that Ralph is hearing the residual carrier
from the BITX when he keys the PTT and listens on another rig.?? The
carrier is suppressed but it is still there and will be quite noticeable
at close range.?? As for getting CW going with the Raduino, ND6T has an
interesting mod posted on the BTXHACKs blog.???? 73?? Bill

On Sunday, February 26, 2017 2:34 PM, John Smith via Groups.Io
<johnlinux77@...> wrote:


I've been asking about this my self. In the code is function button for
different modes and functions. One is CW mode which requires the external
use of a transistor to hold PTT for a bit while cw code in sent. Then
after a bit it times out, unkeying the PTT.??That's what I understood
from reading the comments in the code. It seems to me if you can put the
sound of your CW tone on a certain frequency by an offset so it can be
heard by another on that frequency and you can hear them, then you are
doing CW.But the others don't think it's that simple. And I haven't tried
it yet. I lost a month of experimentation, and traded it for a month of
troubleshooting and repair, just to play with it now.
 

I made two kits, chosen for their audible side tone. The way the BITX seems setup to work CW is audio cable mic level input. Not line in level input. And especially not headphone level output. Phone level would be like putting an audio cable between a CW kit with a side tone and headphone jack, into the mic jack. Boom!

We need an audiophile to tell us how to produce mic level sound to put CW into the BITX mic jack from a simple code practice oscillator circuit. Instead of the circuit driving a speaker.

It seems like some people don't understand that CW is a single side band signal from a CW transmitter. But with a SSB transceiver like the BITX 40, any sound you can make will be transmitted on the back of the BITX signal being transmitted. It doesn't matter what sound you make, whether it's speaking, whistling, or a fart. If you are communicating, it works.

You don't have to rebuild it to produce a signal the same way a CW transceiver does. It's the Morse Code you want.

That's my opinion. And if it's wrong... Enlighten me, please.?

?

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