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Date
Re: Intermodulation Performance
By jim <ab7vf@...> · #57592 ·
Re: QRP SWR meter recommendation? #ubitx
Jack, Very interesting. Thanks. Tom, wb6b
By Tom, wb6b · #57591 ·
Re: Wow... 15 volts in and a bunch out..
So a question. I know some of the power boost suggestions like shorting out parts the were put there to provide stability in the amplifiers or overdriving the audio, do indeed increase power, but at
By Tom, wb6b · #57590 ·
Re: QRP SWR meter recommendation? #ubitx
If you want SWR only I just got a nice cross needle MFJ-822.?? It covers 1.8-200 MHz, 30 or 300 Watts.? On the 30 watt range half scale is about 7 watts. -- Lee - N9LO?"I Void Warranties"
By Lee · #57589 ·
Re: QRP SWR meter recommendation? #ubitx
Tom: You can get a marginal speed improvement by moving the data definitions out of the loops. For example: #define ELEMENTS(x)? (sizeof(x) / sizeof(x[0]))? // Gets rid of "magic numbers" in the
By Jack Purdum <jjpurdum@...> · #57588 ·
Re: Nextion 3.5 with CEC 1.097
> Thank you Nikkos. > Michel F1GTX >
By Michel Dupuy · #57587 ·
Re: uBitx diagnostic document from Facebook group #ubitx
I must have missed something, where's this guide? Roy WA0YMH
By Roy Appleton · #57586 ·
Re: NEW DISCUSSION GROUP SPECIFICALLY FOR HOMEBREW TEST EQUIPMENT
Great! -- One
By Sudipta Ghose VU2UT · #57585 ·
Re: NEW DISCUSSION GROUP SPECIFICALLY FOR HOMEBREW TEST EQUIPMENT
Good idea, getting harder to get good second had test equipment
By Adrian Waiblinger · #57584 ·
Re: uBITX new build, quiet audio #ubitx
Jeff, I have the same impression and experience like You! I prodduced a so called level diagramme, see may attachment. Interestingly thsi result was verified on my UBITX: at -107 dBm (=1?V) at the
By Henning Weddig · #57583 ·
Re: Intermodulation Performance
Hi,Warren, I will always appreciate the data that you generated! Nicer radios, are certainly nicer radios! Some people like Honda FIT , some prefer a high end BMW! For the purposes of coaxing local
By Gordon Gibby <ggibby@...> · #57582 ·
Re: Nextion 3.5 with CEC 1.097
¦§i Michel, I already know that the software has some issues, but it's the best option i've found thanks to Rich Neese.You can also find GUI here
By SV9CVJ Nikos · #57581 ·
Re: uBITX new build, quiet audio #ubitx
I have a current version of the BITX which I just finished assembling in the case.? It works after some debugging....replacing the code in the Arduino due to a cw fault per another discussion.? It
By jfein2000@... · #57580 ·
Re: Intermodulation Performance
I am finished. This is simply not worth the effort. The difference between this radio and my FT-817 is about $350. The difference between the uBitx and my HobbyPC RS-HFIQ is $100. Both are worth the
By Warren Allgyer <allgyer@...> · #57579 ·
Re: Nextion 3.5 with CEC 1.097
Thank you Nikos. I tried 270tft the screen is reversed. 90tft is fine except the S / Meter deviation is reversed. friendships F1GTX Michel
By Michel Dupuy · #57578 ·
Re: Nextion 3.5 with CEC 1.097
For GUI v3 please try this . ( https://www.mediafire.com/folder/mmu6ua683lk93/Nextion-Screen-1097#g9pqdwt6i6u5s ) https://www.mediafire.com/folder/mmu6ua683lk93/Nextion-Screen-1097#g9pqdwt6i6u5s (
By SV9CVJ Nikos · #57577 ·
Re: QRP SWR meter recommendation? #ubitx
Here is an example of one of the little swr indicators where you just dim the diode https://qrpguys.com/tuning-indicator I¡¯ve used that kind of a circuit as well as the two torrid system others
By Gordon Gibby <ggibby@...> · #57576 ·
Re: QRP SWR meter recommendation? #ubitx
If you look at the schematic of your tuner, there is probably one or two resistors in a voltage divider chain that you could parallel something with to increase the voltage that gets to the meter.
By Gordon Gibby <ggibby@...> · #57575 ·
Re: New Group Specifically for "Homebrew Test Equipment"
When I'm googling for something home brewed, I use the term DIY. Such as DIY screwdriver antenna. I get the most hits that way. Vince.
By Vince Vielhaber <vev@...> · #57574 ·
Re: ubitx troubleshooting help - low power after irf510 replacement
Stay away from their 1/8" phone plugs. I had the tip of one fall off inside a jack. Problem was the jack was on the back of my Kenwood TS430 and I had to pull the back panel to get the jack out to get
By Vince Vielhaber <vev@...> · #57573 ·