A new group BITX has been created on Facebook by Om Stanley Grixti 9H1LO from
Malta.
Here is the link, if you wish to join and share about Bitx
http://www.facebook.com/group.php?gid=162905785921
All the best
73's
Sunil Lakhani
vu3sua
Bitx is an easily assembled ssb transceiver for all bands and for the Amateur Radio Operator-Hams, with very clean performance.Hams can home-brew the QRP TCVR by Using ordinary electronic components.
Saturday, October 31, 2009
Tuesday, October 27, 2009
Keyer,Soundcard and AGC details for Bitx Version 3
DG1NPJ Juergen Pfeifer From Germany has sent us information for the AGC, CW Keyer and Soundcard details that he has incorporated in his Bitx Version 3. Here are the details so that it would help all members in constructing these mods for the Bitx.
Contents of Email from DG1NPJ Juergen Pfeifer From Germany
Hi Sunil,
the CW Modul i have found by Google looking for schematics of Bitx20, it works, but the Audio Output is to small, i will fix this bug in the next days.
the AGC schematic is from the Bitx Yahoo Group, the Soundcard Interface is a old schematic, it works on all my TRX in my shack. The Pic Keyer i have found on this webpage: http://freenet-homepage.de/
For the AGC/Keyer and CW Modul i send you a PCB Layout, not the best but for me is good.
The connect of the FLL VFO is on my Bitx Q6 Emitter ( no Transitor) to Condensor Basis of Q7.
It works great wenn you make the coil L1 in VFO with 50 Turns (Frequency 14.065 to 14.350 MHz )
for CW i put a Resistor with 18 K from BB204 ( D1 and D2 ) with a switch to GND ( Frequency 14.000 to 14.075 MHz )parallel to R3 82K.
The same switch i use for CW Tone or PSK (from Soundcard Interface ) on Mike Input.
The S meter, the PCB is from you, is connectet in the AGC on R12 of 12 V side, it works but its only for viewing :-)
not a real meter !!
My PCB are made only with a Laser Printer on Paper and Transfering with a hot Iron on the Copper befor etching.
Cheap and Good , Look here: http://thomaspfeifer.net/
Ist only the same Name of this People its not my brother hi hi
AGC Circuit For Bitx
Side Tone Oscillator For Bitx CW Mode
Contents of Email from DG1NPJ Juergen Pfeifer From Germany
Hi Sunil,
the CW Modul i have found by Google looking for schematics of Bitx20, it works, but the Audio Output is to small, i will fix this bug in the next days.
the AGC schematic is from the Bitx Yahoo Group, the Soundcard Interface is a old schematic, it works on all my TRX in my shack. The Pic Keyer i have found on this webpage: http://freenet-homepage.de/
For the AGC/Keyer and CW Modul i send you a PCB Layout, not the best but for me is good.
The connect of the FLL VFO is on my Bitx Q6 Emitter ( no Transitor) to Condensor Basis of Q7.
It works great wenn you make the coil L1 in VFO with 50 Turns (Frequency 14.065 to 14.350 MHz )
for CW i put a Resistor with 18 K from BB204 ( D1 and D2 ) with a switch to GND ( Frequency 14.000 to 14.075 MHz )parallel to R3 82K.
The same switch i use for CW Tone or PSK (from Soundcard Interface ) on Mike Input.
The S meter, the PCB is from you, is connectet in the AGC on R12 of 12 V side, it works but its only for viewing :-)
not a real meter !!
My PCB are made only with a Laser Printer on Paper and Transfering with a hot Iron on the Copper befor etching.
Cheap and Good , Look here: http://thomaspfeifer.net/
Ist only the same Name of this People its not my brother hi hi
AGC And CW Keyer Schematic for Bitx
Hope the info is useful for friends to get the Bitx on CW and digital Modes.
The above PCB for AGC and Keyer will be ready soon and made available
73's
Sunil Lakhani
VU3SUA
Monday, October 26, 2009
Presenting Pictures of Bitx 3 From Germany
WOW WOW WOW!!!
Bitx Version 3 with :
KEYER
SOUND CARD INTERFACE
AUDIO AGC
WONDERFUL S. METER
Yes all this from our very proud Ham from Germany
DG1NPJ Juergen Pfeifer
The Beautiful pictures of the new Bitx 3 from Germany
Bitx Version 3 with :
KEYER
SOUND CARD INTERFACE
AUDIO AGC
WONDERFUL S. METER
Yes all this from our very proud Ham from Germany
DG1NPJ Juergen Pfeifer
The Beautiful pictures of the new Bitx 3 from Germany
WOW!!! Bitx Version 3 QRV from Germany
The Bitx Version 3 is now QRV from Germany and the proud Radio Amateur is our Bitx Club members Om
Juergen Pfeifer DG1NPJ
It is really amazing to see what a beautiful construction our friend Juergen has done with Bitx Version 3, and he has had many successful contacts with Bitx Version3.
We wish you many many Dx with your Bitx 3 Om Juergen Pfeifer DG1NPJ
I am presenting here the comments by our frined DG1NJP
Juergen Pfeifer DG1NPJ
It is really amazing to see what a beautiful construction our friend Juergen has done with Bitx Version 3, and he has had many successful contacts with Bitx Version3.
We wish you many many Dx with your Bitx 3 Om Juergen Pfeifer DG1NPJ
I am presenting here the comments by our frined DG1NJP
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