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Date
Re: Antenna Impedance Confirmation
Yes, Allison, that's the idea. Thanks for your input. While we're off on other threads discussing ways to best measure SWR and power with AD8307s and S/H ADCs and trying to figure out how to minimize
By Kees T · #48769 ·
Re: Thoughts on Reading EEPROM data
It's just too hard for me to think of a generic memory dump in decimal. And as Jack stated, I don't know what type of data I am trying to read in a generic dump. An alternate based on Jack's example,
By Gary Anderson · #48768 ·
Re: RadI2Cino - I2C replacement kit for the uBITX Raduino Now with Teensy 3.6 adapter #ubitx
Jack gave a pretty good overall view of how to download new firmware in his post today:? ? ??/g/BITX20/message/48760 Of course there's a lot of details he doesn't quite cover.
By Jerry Gaffke · #48767 ·
Re: boosting the power on 28 MHz #ubitx
A simple mod I'd like to try is a 200(220) PF cap from teh top of RV1 to the wiper and set for about 9-10W at 80m.? As frequency goes up the drive coupled though RV1 plus cap will increase to
By ajparent1/kb1gmx · #48766 ·
Re: Broadband HF Folded Dipole Antennas
Loaded folded dipole have a corner frequency below with the load is doing the work.? This is related to the length like any dipole.? Also as you hit various resonances? ithe resistor does some
By ajparent1/kb1gmx · #48765 ·
Re: uBITX drive level.. #ubitx
I'm getting the same 5W output on CW and SSB (with a loud "helloooo").? I also noticed that my PA bias pots when set to the proper 100ma per IRF510 are at slightly different settings.? RV1 is turned
By N1EDC · #48764 ·
Re: Antenna Impedance Confirmation
Having a old Palomar noise bridge I can say its an effective and cheap tool. I also have? Daton 250 LCR bridge (can test at DC or 1khz).? Handy tools. Everyone with an antenna usually has a receiver
By ajparent1/kb1gmx · #48763 ·
Re: Software Bug Report Template
OOPS, that should read "anyone that gets LOST in this -----" Fat fingers and autocorrect is sometimes really dumb - LOL. Jim
By Jim Sheldon · #48762 ·
Re: Software Bug Report Template
Ha! "Been there, done that!" Yes, that's definitely one to consider. I just hope the newer people take this to heart though and don't get all embarrassed or ticked off over it. Everyone needs to
By Jim Sheldon · #48761 ·
Re: RadI2Cino - I2C replacement kit for the uBITX Raduino Now with Teensy 3.6 adapter #ubitx
First, Farhan's original code is a collection of 7 files, of which ubitx_20.ino is the primary file since it holds the setup() and loop() functions. Second, all 7 of the files MUST be in a directory
By Jack Purdum <jjpurdum@...> · #48760 ·
Re: Software Bug Report Template
Based on experience and hearing "I did not do anything and it stopped working" a bit too often, here is one more question: What did you do just before you did not to anything?
By Karl Heinz Kremer, K5KHK · #48759 ·
Re: BITX QSO Afternoon/Evening, Sunday, May 13, 3PM & 7PM Local Time, 7277 kHz in North America, 7177 kHz elsewhere.
All: I'm not aware of a CW ?BITX frequency, but I would try those presented here as a starting point: QRPeanut Power Jack, W8TEE | | | | QRPeanut Power | | |
By Jack Purdum <jjpurdum@...> · #48758 ·
Re: Software Bug Report Template
All you need is proper answers to three questions: Exactly what did you do? Exactly what happened? Exactly what did you expect to happen? Proper answers to all three questions should get you to the
By Vince Vielhaber <vev@...> · #48757 ·
Re: RadI2Cino - I2C replacement kit for the uBITX Raduino Now with Teensy 3.6 adapter #ubitx
thanks for your input Jerry, the problem I'm having is there is Ubitx?HF signals kit that I have and this??is? Ubitx_20?? on the main web page, hfsignals.com? has a link here for support of
By artns7e <Artns7e@...> · #48756 ·
Re: BITX QSO Afternoon/Evening, Sunday, May 13, 3PM & 7PM Local Time, 7277 kHz in North America, 7177 kHz elsewhere.
Is there something for CW as well?
By iz oos · #48755 ·
Re: Broadband HF Folded Dipole Antennas
could be, hard to say, I've certainly not done a simulation of them --- but that is what i believe was measured or predicted by others in reviews etc that I've read elsewhere. Without a solid
By Gordon Gibby <ggibby@...> · #48754 ·
Re: Broadband HF Folded Dipole Antennas
I think your expected loss are a bit pessimist, 10db means 90 percent in heat. The resistor would have melt... Btw the 66 feet version or the 132 offer better radiation patterns than others and maybe
By iz oos · #48752 ·
Re: Broadband HF Folded Dipole Antennas
Hi, I have had a BW for twenty years. It's the 66feet version. It exceeded my expectations, you can use qrp levels at 1w as well or less with wjst sort of modes. Don't think these kind of antenna are
By iz oos · #48751 ·
Re: SMT sizes in ?BITX
Thanks Gordon. I'm already on them. That may explain why my sisters are so bad because they haven't had a heart attack. 73 Bill WA8VIH
By William Cullison <wa8vih@...> · #48750 ·
Re: Thunderbolt and lightning, very, very frightening me
At GT I took a couple of courses in Power Systems Engineering which turned out to be handy when I got into SCADA/EMS software. At any rate, in one of those classes, we calculated the forces involved
By James Lynes <jmlynesjr@...> · #48749 ·