Re: QRPGuys DSB Digital Transceiver
Jack,
I suspect it is people are just not trying because the bands don't have much
except on contest days.
I use DX Lab with DX Atlas to look at the CW/digital activity. There appears
to be more
By
Bob Macklin <macklinbob@...>
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#19764
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Re: QRPGuys DSB Digital Transceiver
How well does it work as a normal QRP transceiver?
Can you use it for RTTY? Because of age I now prefer to use RTTY rather than
CW.
Bob Macklin
K5MYJ
Seattle, Wa.
"Real Radios Glow In The Dark"
By
Bob Macklin <macklinbob@...>
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#19763
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Re: QRPGuys DSB Digital Transceiver
Mine works pretty good. I have made a couple dozen contacts on forty and thirty.
A great toy for 50 bucks.
Terry
w6leo
By
Terry W6LEO
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#19762
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Re: QRPGuys DSB Digital Transceiver
Bob:
It's very true that conditions right now suck compared to the 70's. I had regular sked's for phone patch traffic between our military personnel stationed on Guam and the Marshall Islands and
By
Jack
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#19761
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Re: QRPGuys DSB Digital Transceiver
JIm,
It was phasing and also could also do AM synchronous.
Allison
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Please reply on the group, no private emails we as a group get to share info that way.
By
ajparent1/kb1gmx <kb1gmx@...>
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#19760
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Re: QRPGuys DSB Digital Transceiver
All this is specious to me. If it was a kilowatt kit with the likelihood of hundreds of them operating simultaneously all over each band, then maybe it an issue. It something to experiment with for
By
Jack
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#19759
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Re: QRPGuys DSB Digital Transceiver
Bob,
That is totally correct unless you are in the first 100khz.
Allison
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Please reply on the group, no private emails we as a group get to share info that way.
By
ajparent1/kb1gmx <kb1gmx@...>
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#19758
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Re: QRPGuys DSB Digital Transceiver
Part of the problem with ham radio today is ready built radios are too
expensive for a lot of us.
70 years ago we could buy a surplus BC-453 (Q5'er) for $5 and build a
converter to put in front of
By
Bob Macklin <macklinbob@...>
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#19757
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Re: Phasing SSB Transceiver: Homebrew w/o a scope?
My memory tell me the NorCal Sierra first converts the incoming signal to
about 8MHz then the VFO is used to convert that to the 4.9MHz IF.
The crystals used are 8MHz above the band lower edge.
Bob
By
Bob Macklin <macklinbob@...>
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#19756
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Re: QRPGuys DSB Digital Transceiver
and on a lighter note ..website american radio history" <https://www.americanradiohistory.com> just uploaded about all QST mags up thru 1949 ..read Norgaard's article in July 1948 on a "phasing
By
jim
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#19755
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Re: QRPGuys DSB Digital Transceiver
I second the notion. Build it, use it and see what it does.
I built the kit and put it on the air and worked almost 30 Qs with
it. I am not a fan of the mode after the fact. You just point
and
By
chuck adams
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#19754
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Re: QCX-40 Working...Sort of...
That message was mis-sent to the wrong group.
Should have been to QCXlabs.io
The problem was found via a reply with links to previous messages.
Cleaned up some soldering and all is well, really
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Chuck Carpenter <w5usj@...>
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#19753
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Re: Phasing SSB Transceiver: Homebrew w/o a scope?
Bob,
The norcal sierra is a single conversion.
The uBitx is double conversion with the 45mhz and 12/11.052 second if.
the difference is notable.
There are many single conversion CW radios and a
By
ajparent1/kb1gmx <kb1gmx@...>
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#19752
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Re: Phasing SSB Transceiver: Homebrew w/o a scope?
Thank you everyone for the responses, and even a couple of private emails! I have some reading/learning to do and I'm going to have to get EMFRD from the Library again.
I also want to go with a
By
Ryan Flowers
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#19751
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Re: QRPGuys DSB Digital Transceiver
BTW:
There is no FCC rule about using DSB/SC. It was quite common in the early
days of SSB.
It was the suppression of the carrier that was desired. It has the same
bandwidth as a normal AM
By
Bob Macklin <macklinbob@...>
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#19750
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Re: Phasing SSB Transceiver: Homebrew w/o a scope?
Both are easy, just different.
The problem is the one that is least understood will be scarier.
The difference is trading critical RF sections for more parts
in the audio section.
The big feature
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ajparent1/kb1gmx <kb1gmx@...>
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#19749
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Re: Phasing SSB Transceiver: Homebrew w/o a scope?
How about a double conversion Rx based on the NorCal Sierra design.
All the crystals for the HF converter are available from Mouser or DigiKey.
They are standard frequencies.You can substitute a LC
By
Bob Macklin <macklinbob@...>
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#19748
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Re: QRPGuys DSB Digital Transceiver
LOL at Randy's post.
QRPGuys aren't the only ones out there with a DSB FT8 kit. People need to
get over all of this. It isn't meant to be a serious radio, it could be
very fun to play with like
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JT Croteau <jt.tobit@...>
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#19747
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Re: QRPGuys DSB Digital Transceiver
Sad ... Still when I just looked, this is being sold to be ran under 'computer-control' by the "wsjt-x" program ... Not exactly rag-chew modes ....purchased a similar device (from hans summers)
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jim
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#19746
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Re: QRPGuys DSB Digital Transceiver
Adam Rong (BD6CR) wrote this in his manual for his D4D/FT8 kit:
"Do we have to worry about the unwanted Lower Side Band (LSB)
and Inter-Modulation Distortion (IMD)? Maybe, but for a transmitter
of
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Larry Lovell
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#19745
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