Re: ??IF Stage doubts??
I don't have instruments just LCR frequency meter- Tip RF- only basic wattmeter was more from experience in assemblies that I adjusted and it was very good at 40m voce pode de add no Whatzapp
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Carlos
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#88479
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Re: ??IF Stage doubts??
yea all voltage measurements seem fine as per the chart. Do you have a CRO and can you help with 1)Waveforms of BFO and VFO individually 2)Can you change VFO and see whether BFO changes and vice a
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arorasimran@...
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#88478
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Re: ??IF Stage doubts??
Hello everyone, I already configured the 3 E-bitx all working very well. They were assembled strictly in accordance with the manual and prior to the placement of the BPF and the toroidal inductors
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Carlos
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#88477
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Re: New Toy
Hi John, I was indeed worried about this. The box is pretty big compared to the amp & LPF boards, and I might just solder up an internal box made of PC board stock. Thought I might just put it
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[email protected] <jerry@...>
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#88476
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Re: New Toy
Hi Jerry, What are you doing for shielding? Are you using conductive filament or a metal box inside the enclosure? I found the Chinese boards to radiate all kind of junk through the wiring and from
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John Cunliffe W7ZQ <n2nep@...>
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#88475
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Re: ??IF Stage doubts??
E.BITX is easy bitx. Sunil I am pretty comfortable with coding. Thanks for pointing out the different IF frequencies Are there any people around who have used E.Bitx with its stock firmware and got
By
arorasimran@...
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#88474
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Re: New Toy
All, Attached pic is my 3D printer making a case for my tiny linear. The case is a equal in size to the uBITX, and will have a touch screen just like the uBITX. Actually, the touch screen was left
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[email protected] <jerry@...>
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#88473
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Re: ??IF Stage doubts??
Allard's Bitx40 sketch is closer than the AK2B sketch. But the pin numbers are all wrong, and the Bitx40 has a pot instead of an encoder. The Bitx40 IF is at 12mhz instead of 10mhz, assumes there is a
By
Jerry Gaffke
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#88472
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Re: ??IF Stage doubts??
why not use sketch from Allard PE1NW see details here http://ubitx.net/category/bitx40/ and download it from here (and find further info for wire up, hints and kinks, moddings)
By
Siegfried Jackstien
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#88471
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Re: ??IF Stage doubts??
Sunil's Easy Bitx is not a bad choice. A single band SSB rig for under half the price of a uBitx. Simple, mostly through hole parts, a good project for those wanting the complete kit building
By
Jerry Gaffke
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#88470
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Re: ??IF Stage doubts??
I'm guessing this is the Easy Bitx from InKits: https://amateurradiokits.in/easy-bitx-version-1/ and that it uses the Si5351 PLL chip for VFO and BFO. It would be very odd if the BFO moved around
By
Jerry Gaffke
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#88469
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Re: ??IF Stage doubts??
I may be out of the loop on this one, exactly what is an E.Bitx? Can you point to a manual? What DDS chip? Do you have source code for the DDS? There are several different kits coming out of India,
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Jerry Gaffke
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#88468
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DC/RF voltage measurement ubitx v6
Hello friends Any place I can find DC/RF voltage measurement ubitx v6 summary. De VU2UPX
By
Charudatt Uplap
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#88467
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??IF Stage doubts??
Hello friends and gurus, I am building a E.Bitx purchased from India and here are the symptoms 1) VFO frequency =? BFO frequency? +-few Khz produces a strong radio like static when Q3 base is
By
arorasimran@...
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#88466
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Re: #ubitxv6-help Adding the W2AEW AGC to the uBitx v6
#ubitxv6-help
Here's an earlier version of the circuit: https://hackaday.com/2014/06/29/automatic-audio-leveling-circuit-makes-scanning-more-fun/ It is designed to be used with no mods to the radio, just connect
By
Jerry Gaffke
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#88465
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#ubitxv6-help Adding the W2AEW AGC to the uBitx v6
#ubitxv6-help
Hello, yesterday I received, built and already oeprated a brand new uBitx v6. It is a great radio and I instantly had a few QSOs with stations in Denmark, Bosnia, Austria, Poland and Wales on 40m.
By
Michael DK1MI/N1BSD
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#88464
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Re: New Toy
If you don't have a spectrum analyzer, buying a TinySA will give you ample of instrumentation to improve your Ubitx. Just make sure you are buying an original not a clone, the clones are not worth
By
John Cunliffe W7ZQ <n2nep@...>
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#88463
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Parasite noise (2)
Hello, As previously said I have a noise in the audio (Tic tac style) at each SDA pulse. I did a lot of testing and I came to the conclusion, that in fact there must be some interference (Style
By
Gerard
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#88462
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HEY NEW PERSON, yeah you, go check out bitxmap.com and mark your spot in the world
If you are new here you probably have no idea what I am shouting about.? In addition to this list, we have a map at bitxmap.com ( http://bitxmap.com ) where you can mark your location and see the
By
Doug W
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#88461
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Re: Capacitance of the master crystal of the Arduino
Sorry, I forgot to mention the load capacitance for those $0.10 crystals from Tayda. They are spec'd on the website at 16 pF. I have absolutely no idea (or any way to measure) the actual load
By
Jim Sheldon
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#88460
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