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Date
Re: CW OPERATION
Ron Where do I go to look for your group software? Now that I got my harmonic somewhat more under control, I¡¯m going to want to pick out good software modify it if needed and have it ready for our
By Gordon Gibby <ggibby@...> · #58494 ·
Re: uBitx Unfiltered
Sort of¡­ I added a second receiver to my uBITx on VFO B. It¡¯s great for DXing. I, like you, do like the uBITx receiver. You can even do some clever things with the audio (stereo channels one for
By MadRadioModder · #58493 ·
TIA amplifiers
Dear members you can check: 1. Add parallel to R12 C=470 pF: in my analiser I could see 3 dB gain rising on 30 MHz, 0805 smd resistor over R12; 2. Added two 100 Ohm? to collectotrs Q11 and Q12 (had
By George · #58492 ·
Re: uBitx Unfiltered
W.r.t the current discussions on ubitx transmitter woes ... the route forward that I chose was to order LPFs plus the relay board from QRP Labs. My thoughts were to use a 2nd Arduino Nano clone
By Michael VE3WMB · #58490 ·
Re: K5BCQ uBITX Relay Switched LPF/BPF board
You can assign the filters to any LPF/BPF you want. Your list looks good to me, maybe combine the 12m/10m LPFs and make the 15m a BPF. 73 Kees K5BCQ
By Kees T · #58489 ·
Re: K5BCQ uBITX Relay Switched LPF/BPF board
W0PWE Sep 2???#58462??( /g/BITX20/message/58462 ) Kees - With 6 filters is the plan as follows? LPF1 = 80M LPF2 = 40M and 30M LPF3 = 20M and 17M LPF4 = 15M LPF5 = 12M LPF6 = 10M
By Kees T · #58488 ·
Re: K5BCQ uBITX Relay Switched LPF/BPF board
Here is what all 4 uBITX LPFs look like as plug-ins. Note that the 6x LPF board is arranged to where you can cut off 1 or 2 of the LPF/BPF positions with no ill effect. 73 Kees K5BCQ
By Kees T · #58487 ·
Re: UBITX TX level diagramme
Lawrance, are you using uBITX with BAT54S as mixer diodes ? If you used 1n4148, then your tests could be valid. regards sarma vu3zmv
By MVS Sarma · #58486 ·
Re: K5BCQ uBITX Relay Switched LPF/BPF board
Since most keep talking about the need for BPFs for certain bands, I "guess" the 80m-10m uBITX direction should be a board with 6 filter capability. How about a?basic?dual relay?switched filter
By Kees T · #58485 ·
K5BCQ uBITX Relay Switched LPF/BPF board
In the interest of avoiding any confusion, I break this out to a separate thread. 73 Kees K5BCQ
By Kees T · #58484 ·
Re: Perspex Case
Awesome
By umesh kumar anand · #58483 ·
Re: CW OPERATION
I'm not "dumping" on Ian, merely trying to get him to WAKE UP and fix the problems he's kept missing in his software. It could be really good for ALL modes if he'd just listen to what a few of us have
By Jim Sheldon · #58482 ·
Re: CW OPERATION
It has to be programmed to work that way, but we do it in all of our recent sketches. There is no reason why it can't be programmed in the other sketches if the programmer choses to do so. Jim
By Jim Sheldon · #58481 ·
Re: CW OPERATION
Well maybe no one is paying attention but our software has CAT control, S-meter display, Pass Band Tuning, and we build "memory manager" into the software so, you do not need a pc to change things. We
By W2CTX · #58480 ·
Re: Perspex Case
Beautiful case..?
By Praba Karan · #58479 ·
Re: UBITX TX level diagramme
Hi Allison You said that ( I measured not more than 3dbm at the mixer) mixer, which shows not enough rf drive. Ever thought of adding a small amplifier for more rf drive to the mixer with suitable
By Lawrence Galea · #58478 ·
Re: CW OPERATION
9h1avlaw? of course you risk outof band transmissions if you aren't at least able to recognize which WAY your sideband is going, and how close to the band edge you are.....exactly the same is true of
By Gordon Gibby <ggibby@...> · #58477 ·
Re: CW OPERATION
On Mon, 03 Sep 2018 12:23:57 +0000 "Jim Sheldon" <w0eb@...> wrote: Hi, I just want to be sure I understand. The PTT line can be used for straight CW keying? It seems reasonable, but I have to ask.
By Joe Milosch <zzmiloschxx@...> · #58476 ·
Re: CW OPERATION
Jim¡­ I think you may have missed many of the positive features of the Nextion display¡­ and in particular BECAUSE of that editor, anyone can move those, how did you call it¡­ clutter?, things
By MadRadioModder · #58475 ·
Re: CW OPERATION
If you are near the band edge you risk out of band transmissions
By Lawrence Galea · #58474 ·