Keyboard Shortcuts
Likes
- BITX20
- Messages
Search
Re: BITX40 build for SOTA/POTA operation
I like all these antenna options, but I do have to find a way to operate w/o a tree. The MI parks ask people not to run anything up into trees because of concerns about moving parasites around. I am thinking the tenkara fishing rod option or possibly a magloop. Mag loops seem to get much simpler to build when you're talking QRP power (no vacuum capacitor needed).
|
Re: Signal generator.
¿ªÔÆÌåÓýRaj, thanks a lot, now it compiles too on my Pc, Der Sketch verwendet 5882 Bytes (19%) des
Programmspeicherplatzes. Das Maximum sind 30720 Bytes. so only 5,8 kB thanks a lot!! Am 07.11.2017 um 14:36 schrieb Raj
vu2zap:
Henning, |
Re: Signal generator.
Henning,
toggle quoted message
Show quoted text
I added these libs and it compiles as is.. I could not send this to the group so here are the dropbox links Raj At 07-11-2017, you wrote: Michael, |
Re: BITX40 build for SOTA/POTA operation
Nice case peatmoss. I like that you brought out a usb connector so you don't have to disassemble every week when Allard has a great new software upgrade. It looks like another pot without a knob was also added. What is it for?
I usually just carry 2 lengths of 1/4 wave wire on a winder. I throw one end up in a tree and lay the other on the ground. The downside of a half wave is that you need a longer wire which is tougher to get up in the air. The plus is that if you can use a half wave wire you can get the high current point up in the air. ??? Bob ?????? KD8CGH |
Re: PE1NWL raduino 2.0
toggle quoted message
Show quoted text
On Nov 6, 2017, at 21:05, Larry Smith <815cpu@...> wrote:
|
Re: Signal generator.
¿ªÔÆÌåÓýMichael, after commenting out the two header files You stated below, I had to comment out a lot more lines, then it compiled, only 5 k of code, see the attached sketch. But i am not sure if this code will give a working result. I got Your pcb, but have not populated it due to non existing files i.e. schematics, layout. I remember You sent it to me but momentarily I can not find these files... Henning Am 05.11.2017 um 22:06 schrieb Michael
Hagen:
|
Re: raduino v1.27 released (improved suppression of spurious burst)
Allard
Your software is impressive!? I have been using v1.25 and adding in some features for my BITX40s (x2) - Voltmeter, SWR and S-Meter.? ?Space and ports represent a major issue now! I note your interest in using one of the PLLs instead of the BFO.? This would be great!? It would also make it easy to add in PBT and adjust carrier offsets and not have the issue of USB being subtractive (so not as deaf - unless you remove the caps in the VFO buffering stages).?? I am in the process of adding the following features/mods:
My feeling is that it would be good to decide collectively, on where we go with the processor!? ?Choices seem to be:
I would be interested in what others think.? ?I would really like a better? UI (User Interface).? Pushing a button multiple times is not really very user friendly, and rotary encoders can do the job so much better for both menu select and tuning functions. 73 Mike ZL1AXG |
Re: RX and TX LED (LEDs 101)
we generally use RED (1.4V) for Tx and Green (2.1V) for Rx. ?let us imagine? 2V as led drop.regards Sarma ? On Mon, Nov 6, 2017 at 9:09 PM, Vince Vielhaber <vev@...> wrote:
|
Re: 80 Meters on BITX40?
Further to the LPF modification for 80m, I have done more experimenting and found that if you switch in a 470pf cap across L6 in the LPF, you will get about 37db attenuation on 40m, with a nice rolloff from 80m.?
The attenuation on 80m is negligible. See the attached graph. Cheers John de VK4JWT |
Re: PE1NWL raduino 2.0
You may need this driver:?? Might want to see if other BITX's agree with this It's in Chinese but I just down loaded a while back and fixed my problem.?? I find cheap China Nano lack this driver.. I have 7 ultra.? My old Vista machine need this driver as well. 73 On Mon, Nov 6, 2017 at 6:59 PM, 1practical.man <1practical.man@...> wrote: Allard |
Re: BITX40 build for SOTA/POTA operation
Thanks!
toggle quoted message
Show quoted text
On Nov 6, 2017, at 20:16, Vince Vielhaber <vev@...> wrote: |
Re: BITX40 build for SOTA/POTA operation
Vince Vielhaber
It's called a Pelican Case. Google it and you'll find several suppliers, even ebay. I got one from BHPhoto.
toggle quoted message
Show quoted text
Vince. On 11/06/2017 08:01 PM, 1practical.man wrote:
That's a nice box. Can you shared what make and model it is? Perhaps a --
Michigan VHF Corp. |
Re: BITX40 build for SOTA/POTA operation
¿ªÔÆÌåÓýWell that is fine,? sounds interesting.? What if we just want to see it, WITHOUT FaceButt? I have a random wire
up, kinda like a portable would be.
Mike, WA6ISP On 11/6/2017 4:55 PM, peatmoss - ki6ssi
wrote:
Yoyo dipole is good but it takes more work to put up. Lately I've been using an EFHW, its just a small 49:1 auto transformer and 67 feet of wire for 40-10m no tuner, 15 feet of coax. Sling one end up a tree and have the transformer near the ground. So far its the best portable antenna I have tried. Here is a good Facebook group for all the details? -- Mike Hagen, WA6ISP 10917 Bryant Street Yucaipa, Ca. 92399 (909) 918-0058 PayPal ID "MotDog@..." Mike@... |
Re: BITX40 build for SOTA/POTA operation
toggle quoted message
Show quoted text
On Nov 6, 2017, at 19:55, peatmoss - ki6ssi <pete@...> wrote:
|
PE1NWL raduino 2.0
Allard
Will your Raduino version 2 be based on the ATMega 2560 or similar platform? Just curious about how that is evolving. BREAK. I still haven't figured out how to load your code in the original chip. My ancient windows 7 machine won't recognize the chip and allow a write. Thought it worked initially because the LED on the raduino came on, but no code on chip. I will keep plugging away trying to sort it properly. This is all new to me. I haven't tried programming since I did FORTRAN in school. Thanks for your efforts and education that you provide on this list. It's really great stuff John KN4GUY |
Re: BITX40 build for SOTA/POTA operation
Yoyo dipole is good but it takes more work to put up. Lately I've been using an EFHW, its just a small 49:1 auto transformer and 67 feet of wire for 40-10m no tuner, 15 feet of coax. Sling one end up a tree and have the transformer near the ground. So far its the best portable antenna I have tried. Here is a good Facebook group for all the details?
I also put the bitx in a waterproof box. |
Re: raduino v1.27 released (improved suppression of spurious burst)
Hmm, maybe possible. But this would take extra program space and we're
toggle quoted message
Show quoted text
already tight. I want to implement digital BFO first (v2) which also needs some space. If we would have 4 VFO's then we also need to consider how the SPLIT function should work. 73 Allard PE1NWL On Tue, November 7, 2017 01:18, radiomanjwt wrote:
Hi Allard,Would it be possible to have, say, 4 vfos instead of the 2? It |