Amateur Radio Roundtable chat with Farhan 12/19
For those interested the?Amateur Radio Roundtable chat with Farhan? from 12/19 is available on YouTube at https://www.youtube.com/watch?v=sEQNAekjkNk&t=2662s? Very informative about the uBITX?
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DuWayne Schmidlkofer
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#36972
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Re: Dummy
We tested it at 200W for 5 minutes without any damage or charring. The oil, however, gets pretty toasty at that power level. The code is little changed from that in the Projects book, which is
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Jack Purdum <jjpurdum@...>
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#36971
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Re: Dummy
We used 20 1K¦¸ metal film resistors connected in parallel. They are linked like this: it is less expensive than the DL shown in the Projects book, which used brass sheets. Jack, W8TEE To:
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Jack Purdum <jjpurdum@...>
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#36970
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Re: In Line Resistive Terminators for Z Measurement? ?BITX Crystal Filter
Thanks for your help, John.? I was very surprised at how far the noise floor dropped once the transformers were added.? As much as I want to get the receiver working, I can feel a strong pull down
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AndyH
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#36969
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Re: Cw only
Jerry --- THANKS for the information. Some day I'll be retired soon and be able to do a lotta more things.... gordon Well, I haven't done it either. One crystal might be worth trying, filter shape is
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Gordon Gibby <ggibby@...>
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#36968
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Re: Status of Orders
Farhan was on the W5KUB videocast Tuesday night (you can watch it on YouTube) and showed a whole pile of plastic boxes waiting for boards and parts. So it may be a while before he has a supply of
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David Wilcox K8WPE
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#36967
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Re: how to coil your own cables
Years ago I used boiling water making sure that the ends were not in the water. Instead of a heat gun you could borrow the xyl hair dryer. Whatever works for you. Regards Lawrence
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Lawrence Galea
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#36966
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Re: Status of Orders
If you paid by paypal you will usually get a notification when it is shipped and a tracking number. Merry Christmas to all. Regards Lawrence wrote:
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Lawrence Galea
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#36965
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Re: Dummy
Many thanks for the information Jack, Hope it appears in QST for you. Dave G4JBE
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David Lacey
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#36964
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Re: Dummy
https://twitter.com/N8DAH/status/833800940851441664
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N8DAH
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#36963
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Re: Dummy
I used 20 1k OHM metal oxide flame proof does 50W cont 100W peak with no cooling system in place. SWR 1.6 or lower 10-80m.
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N8DAH
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#36962
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Re: Help! I think I may have just ruined my 9 year old's Chanukah
I do that with my Bitx, when it's working, and other rigs. I also have a recording program so I can listen to the QSO. Websdr is a good tool for band conditions too. In the northeast there is a PA and
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Michael Davis <maddmd818@...>
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#36961
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Re: Dummy
Critical thing is, exactly what resistors did you use to build the 50 ohm resistor assembly? Or do we have to wait for that QST article? For those with a spare analog pin into the Raduino and an
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Jerry Gaffke
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#36960
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Re: Cw only
Well, I haven't done it either. One crystal might be worth trying, filter shape is not critical for CW. But as you add crystals, side rejection gets better.? We also care about far out-of-band
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Jerry Gaffke
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#36959
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Re: Dummy
What is the power rating for this gem? I have a home brew 800 watt dummy load that this would make complete! Thanks Marco - KG5PRT
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M Garza <mgarza896@...>
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#36958
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Re: Help! I think I may have just ruined my 9 year old's Chanukah
Shiny copper...all I had to do to fix the first one was spread them apart
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tausciam@...
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#36957
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Re: Dummy
Jack, ?Any chance at the code? I have pretty much all of that ready to go and a dummy load that would love that as a add on. Could it be used inline for active monitoring of output? I need a good
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N8DAH
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#36956
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Re: Dummy
It won't be a kit, but it has been accepted for publication by QST for sometime in 2018. The circuit is about as simple as it gets: Jack, W8TEE To: [email protected] Sent: Friday, December 22, 2017
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Jack Purdum <jjpurdum@...>
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#36955
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Re: bitx chat
Thanks! I have now joined and downloaded the Discord app for PC, makes it easier to keep open when not using the browser, and of course folk can ring me too! 73 Steve G1KQH
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G1KQH
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#36954
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Re: Dummy
We ran this one at 200W for 5 minutes and nothing failed...didn't even discolor the resistors. However, you could cook French fries in the oil. Jack, W8TEE To: [email protected] Sent: Friday, December
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Jack Purdum <jjpurdum@...>
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#36953
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