Re: Searching for IMD
I like the designs on the napkin with beer stains! Raj
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Raj vu2zap
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#59538
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Re: Searching for IMD
?Warren --- very helpful measurement! Cheers, gordon ________________________________ Sent: Sunday, September 16, 2018 9:41 AM To: [email protected] Subject: Re: [BITX20] Searching for IMD This is
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Gordon Gibby <ggibby@...>
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#59537
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Re: Searching for IMD
On Sun, Sep 16, 2018 at 07:10 AM, ajparent1/KB1GMX wrote: Allison > > "It would be adequate...? the only problem I see is the mixer has an > injection of about 5dbm so any level more than > about
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Warren Allgyer <allgyer@...>
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#59536
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Re: Searching for IMD
Carl, That was exactly the point. The RDxxx does not supply any majik and people keep applying that like it does. Dropping them in the holes does nothing useful till you fix all the problems around
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ajparent1/kb1gmx
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#59535
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Re: Searching for IMD
Warren, Following is a table of injection levels required into the new 45 MHz filter in order to achieve 5 and 10 watts on each of the primary 5 bands. From this point forward would be the final
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ajparent1/kb1gmx
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#59534
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Re: Searching for IMD
Allison,? I believe you missed the point of Iz oos's question.? The question was not of using the RD06HHF? for the finals, but for the *driver*.? From my perspective, this was an entirely new
By
RCBoatGuy
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#59533
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Re: 2N2222A vs 2N3904 sourcing
Hi Jim, Proof, it has ot make sense and consistant with my memory as i'm writer.? If you want to write a page you can. As to the L8/L9? depends if its separate inductors as is or a bifilar inductor
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ajparent1/kb1gmx
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#59532
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Re: 2N2222A vs 2N3904 sourcing
Tom, I apologize.? Too late too tired and moo many repeats.
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ajparent1/kb1gmx
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#59531
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Re: Searching for IMD
This is going to be way over the top for "nerd-ishism". Probably not the cup of tea for many........ The question I wanted to answer for myself was: "So.... if we can linearize the SSB generator
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Warren Allgyer <allgyer@...>
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#59530
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Re: Searching for IMD
Indeed ..Real near what I concluded on the old "back 'o the envelope trick"? .. Jim
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jim <ab7vf@...>
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#59528
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Re: 2N2222A vs 2N3904 sourcing
So just as a question and as (I assume) this is an ongoing project wiki ...How does one (a) offer solutions beyond those presented and what KIND of proof is required ... as a for instance L8 and L9
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jim <ab7vf@...>
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#59527
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Re: Searching for IMD
While waiting for the MMICs to test I wanted to find out what 45 MHz drive levels would actually be necessary. Once again, theory and simulations can set a target, but the proof of the pudding is
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Warren Allgyer <allgyer@...>
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#59526
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Re: Raduino fix leads to no receive uBitx
#radiuno
#ubitx
Thanks for you input , I'm under restrictions no antennas allowed on the property buddy, at all, trying do make do what I can, you have no idea what I know, thank you for the assumption, not has the
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notlarc senrab
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#59525
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Re: Raduino fix leads to no receive uBitx
#radiuno
#ubitx
300/ 7.033 Mhz? ?x 0.95? x? .25 = 10.13 m each side of dipole. = 33.23 ft ; you say 40 ft? x 2? There is no chance that the forty foot antenna (as a dipole)? is resonant or presenting anything
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Timothy Fidler <engstr@...>
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#59524
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Re: Searching for IMD
Allison, at the beginning of my professional career 38 years ago I learned that to sketch level diagrammes will help a lot to understand the requirements of individual stages concerning gain,
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Henning Weddig
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#59523
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Re: Raduino fix leads to no receive uBitx
#radiuno
#ubitx
ubitx V4. 3 random wire 2 leads in tree 40 feet long on second floor 60 feet up from ground cw very weak can heard one station not the other. What could I have done wrong, rechecked wiring. Only error
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notlarc senrab
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#59522
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Re: Raduino fix leads to no receive uBitx
#radiuno
#ubitx
OM You will need to give more details to get assistance.? For example: 1??? Which board v3, v4? 2??? What antenna are you using?? You will need a decent antenna to hear anything on any HF
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Mike Woods
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#59521
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Re: Raduino fix leads to no receive uBitx
#radiuno
#ubitx
No not from eBay aduino replacement board .
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notlarc senrab
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#59520
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Re: Raduino fix leads to no receive uBitx
#radiuno
#ubitx
uBitx from eBay?
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Praba Karan
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#59519
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Re: Raduino fix leads to no receive uBitx
#radiuno
#ubitx
Hi I purchased my unit in July same problem , order both board s off from eBay . my cw is week. Yesterday thought I heard cb or cordless phone , tried everything except flashing again. I'm no going to
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notlarc senrab
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#59518
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