Re: The 1926 ?bitx of my great father
I would bet it was a kit. And almost all of those radios used 01A tubes or the equivalent. Sent: Saturday, July 11, 2020 7:08 AM To: [email protected] Subject: Re: [BITX20] The 1926 ?bitx of my great
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MadRadioModder
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#80385
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Re: The 1926 ?bitx of my great father
Hi Gerard I would like to echo Michael's comment about pulling apart an ANTIQUE receiver that looks to be relatively whole. Your Grandfather's old wireless receiver would go well in the collection at
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Peter LB0K
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#80384
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Re: The 1926 ?bitx of my great father
Restore that fantastic piece of history. It would be a shame not to restore it and make it work. Just my 2 cents.
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Michael Stenkamp <n7qmm20@...>
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#80383
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Re: The 1926 ?bitx of my great father
Hate to see you destroy that piece of history for just the capacitors¡ Sent: Friday, July 10, 2020 1:27 PM To: [email protected] Subject: [BITX20] The 1926 ?bitx of my great father Hello, Seriously,
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MadRadioModder
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#80382
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Re: Low sensitivity
I only have access to one of my calibrations for a v4.? It was 175000. 73 Evan AC9TU
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Evan Hand
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#80381
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Re: The 1926 ?bitx of my great father
quiet severe!
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Ashhar Farhan
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#80380
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MY A to Z *Bitx
hello, Here you can see a sides of my printed circuit board. I modified for the Ardino power supply (10 ohm resistance + capacitors. For the power supply of the Nextion, it can be done directly on the
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G¨¦rard <kabupos@...>
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#80379
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The 1926 ?bitx of my great father
Hello, Seriously, I found this old TSF, and the variable capacitors will serve me for an antenna loop. I¡¯m still working on my own construction of ?Bitx where I can go from A to Z. The power supply
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G¨¦rard <kabupos@...>
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#80378
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Re: Low sensitivity
Thank you Gentlemen! I am now able to tune in strong local AM stations.? I went back to the BFO tuning tool and watched Ashhar YouTube.? I was not believing the tuning adjustment coming in around
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Bruce Morrell
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#80377
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Re: Building a 12V Supply Board
I remember reading in an old spec sheet for a three-terminal regular that the operating voltage of the regulator was three volts. This no doubt depends largely on the design of the regulator but 3-4
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Bob Lunsford
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#80376
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Re: construction
Back in the days of the Commodore 64, there was a recurring problem with the main power connection pin on the board having a hairline crack in the solder joint. All that needed to be done was reheat
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Bob Lunsford
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#80375
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Re: Building a 12V Supply Board
Keep all leads short or be prepared to add large and small caps at each end of the long leads because voltages can build up across stray inductance caused to long leads. Like a 10 MFD and a 0.1 disc
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Bob Lunsford
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#80374
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Re: Low sensitivity
Bruce, As Curt said in his response, the BFO has a HUGE impact on the sensitivity of the rig.? You need to have the audio response centered in the passband of the SSB filter.? The way that I have
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Evan Hand
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#80373
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Re: Low sensitivity
Bruce have you performed an alignment of the BFO?? if it were decently off sensitivity would be reduced.? of course listen to the lower ham bands as their should be strong signals there. Curt wb8yyy
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Curt
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#80372
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Re: Low sensitivity
Bruce, Q74 is used to mute the audio in when in transmit mode.? This reduces the input, yet still allows the sidetone to feed the audio amp to be herd.? If you check the rest of the schematic, you
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Evan Hand
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#80371
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Re: Building a 12V Supply Board
Peter All this seems to point to a uBITX or BITX that is being run at near maximum audio volume level. I would probably look at RF and IF circuitry to see why it is necessary to have the volume turned
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Arv Evans
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#80370
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Re: Low sensitivity
Bruce, The MFJ is handy but its far from calibrated in frequency. Allison --------------------------------- No direct email, it goes to bit bucket due address harvesting in groups.IO
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ajparent1/kb1gmx
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#80369
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Low sensitivity
Fellow Utix v6 users.? I have a new v6 radio I am trying to determine if it is properly working.? I am unable to pick up wwv signals so I am calibrating using a mfj 259b as a signal source.? I have
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Bruce Morrell
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#80368
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Re: Building a 12V Supply Board
The ¡®clacks¡¯ are most likely radiated noise and not conducted. This is normal. Dale W4OP Sent: Thursday, July 9, 2020 1:09 PM To: [email protected] Subject: Re: [BITX20] Building a 12V Supply Board
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Dale Parfitt <PARINC1@...>
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#80367
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Re: Building a 12V Supply Board
It's definitely coming from the mains, if I switch off the soldering iron I get a <clack> on the audio of the radio, if I switch off the main light switch in the room I get an extremely loud <CLACK>.
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Peter McCracken EI3JCB
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#80366
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