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Bitx20 V3 "Dead Bug Style" Audio section.
While I was still waiting for my Multiband Bitx printed circuit boards and all the parts,I wanted to build another Bitx20 V3,just too kill time.So I took a large piece of double sided copper PCB and...
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Bitx 20 V3 "Dead Bug Style" BFO section.
I build the Bitx20 V3 Audio Section in about 3 hours.So it was time for the next chapter,the BFO/Modulation section.I took another 5 by 5cm double sided board.On the picture bellow you see the...
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Bitx20 V3 "Dead Bug Style" 2nd IF Amplifier + Crystal filter.
Just completed the 2nd IF stage amplifier and the 10MHz crystal filter.The "beeps"on 10MHz are now hearable with a piece of wire as antenna and I had to turn the volume as low as can be,what a...
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Bitx20 V3 "Dead Bug Style" Post IF-Amplifier and 1th Mixer section
After a few hours of soldering ,I almost completed the 7th and 8th stage of my Bitx20 V3 "dead bug" style 20 meters QRP Transceiver project.Transformers T1 and T1a are the same as in the BFO.13...
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Bitx20 V3 "Dead Bug Style" RF amplifier section
After a few hours of work I completed the RF Amplifier section.Be carefull that transistor Q1 is a 2SC2570A in stead of a 2N3904.If you cannot purchase a 2SC2570A,you can use the more common MPSH10.No...
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Bitx20 V3 "Dead Bug Style" Bandpass filter.
Today I finished the bandpass filter.The bandpass filter is a very importand part of the build, because we only want the frequency between 14.000Mhz and 14.350Mhz through the bandpass filter.All the...
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Bitx20 V3 "Dead Bug Style" PA driver.
On the picture bellow you see one of the smallest circuits in the Bitx20 V3 build.It`s the PA driver,the last step in the transmision line before the transmit signal enters the PA Amplifier.As you can...
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Bitx20 V3 "Dead Bug Style" VFO
Yesterday I`ve finished the VFO.First QSO`s succsesfully heard on my Bitx20 V3 Dead Bug Style.After I connected the VFO to the rest of the Bitx20,the reception was not that great.I only heard some...
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Bitx20 V3 "Dead Bug Style" Building the Case
First I want to start my blog with a special thanks to my radio friend PA1SBM.Alex was so kind to put some nice comments on his blog.Just like me,Alex is also building a Bitx20 and has some other...
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Bitx20 V3 "Dead Bug Style" The PA-Amplifier
Last week I started the build of the Linear Amplifier for the Bitx20 V3 project.I tried to stick close to the original circuit board design.As you can see on the picture,I only use one diode (1N4001)...
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Bitx20 V3 "Dead Bug Style" Test stage.
May I present to you,my "Dead Bug Style" Bitx20 V3 in working order.The finished PA-Amplifier from the last blog is now connected via RG174 coaxial cable to the exciter board.I added a front and a back...
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Multiband Bitx: The MK1 Exciter
After not posting for two months now,it`s time to post a new blog about my Multiband Bitx.A few months ago I purchased the Multiband Bitx kit by Sunil and a ordered the G6LBQ linear PCB by DXKits.In...
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Multiband Bitx:The MK1 Bandpass Filter
This week I finished the build of the Multiband Bitx Bandpass filter.In the beginning of March 2013,I purchased the complete G4CFY bandfilter kitt by Spectrum Communications.In the meantime there was a...
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X-Phase II Noise Canceler
This week I started the build of the X-Phase II noise canceler.Because I have a lot of QRM on the HF-bands,especially on 160 meters.The biggest problem maker is standing one floor below in my living...
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Multiband Bitx: The VFO
After the succsesfull reception tests I did with the Multiband Bitx on 20 Meters using the IK3OIL VFO,it was time to decide what kind of VFO I would use for my project.There where several options.The...
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Bitx20 V3"Dead Bug Style" Making the call.
A few weeks ago I changed my shack and put in a new floor,new wallpaper etc,etc.So all my gear,projects and rigs temporary had to move to the attic.When it was time to install my rigs in the new...
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End Fed Wire Antenna for 10,15,20 and 40 meter band.
A few months ago I bought a FT140-43 toroid to make myself a homebrew End Fed wire antenna,without the need for a tuner.As you all probably know,I use this comercial antenna with a lot of good rapports...
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Field test EndFed Wire Antenna lifted by a Kite!
Two weeks ago,Ramon (PE1OUW) asked me to join him and some other Ham`s on a field trip,where they would lift a wire antenna by means of a kite!I thought,yeah,why not ,interresting to see how a kite...
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Bitx20 V3 "Dead Bug Style" New Bandpass Filter.
As I discribed in a earlier blog,the bandwith of my bandpass filter in the Bitx 20 was very small.Only 100KHz or so.I found this filter on the internet,and after I,ve build the filter I found out that...
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Multiband Bitx: Sneak Preview of the case.
Picture of my Multiband Bitx project so far.In the front you see the VFO knob and display from the PA0KLT VFO and the push buttons.Just like my earlier builds.I used a VU-meter from an old Hitachi...
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