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Re: No RF power CW, digital but OK SSB
#sBitx
Looked at the reported transmit signals in the spectrum.
Here is CW sending dots, same current draw as SSB PTT with no audio input, no RF output power seen Next LSB with low audio, also no RF output power Finally LSB with louder audio, seeing some RF out I don't know what the units are on the display but it looks like it needs a higher input level than it's getting to drive any RF. The operating manual says: "?Increase the MIC setting until you are covering 6 horizonal divisions (see the picture below). This is standard setting for the modulation.", but the CW signal appears to only cover 4. [and no pic] --? 73 ??? Bob? KD8CGH |
Re: The Daylight Radio
I am so sorry about the snafu. I will get all the files checked once again. - f On Mon, Aug 8, 2022, 3:27 AM David R. Hassall WA5DJJ <dhassall@...> wrote:
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Re: sBitx antenna-first warning
Luca,
good info for the ones who need info on swr meters. unfortunately there are some who ignore these basic tips,? they ignore this basic tool just like the field strength meter. Then they wind up burning their rigs up due to highly mismatched impedances. and the lack of understanding. I use a field strength meter with all my transceivers. I have several,which range from simple to exotic. exotic meaning i have the meter in the shack,and the sensing unit in the yard. Actually 3 of them and i can tell if my antenna i built at the time is either efficient or not. Ive seen 1:1 swr but crappy field strength readings because of the "tuner" Really is no reason for burning up radios even in these technologically advanced scenarios. I get the banannas saved up i will be buying one of Ashhars new sbitxs. For now, im going to order another ubitx. LOVE THESE RADIOS!!!!!!!!!!!!. 73 David ac9xh |
Re: sBitx antenna-first warning
I also remember, that noobies like myself back in the day,ran both tube and solid state equipment. If i remember, 50 ohms was predominantly a VHF issue. Might be wrong.Even on a solid state transceiver, i never had a commercial transmatch or "tuner".?? we all used the simple swr meter,volt meters and ammeters ,light bulbs and neon bulbs,or homebrewd match or used other tricks? like a homebrewed field strength meter to prove our antennas were up to snuff., . I remember climbing? the ladder to the pulley where my inverted vee was mounted,lowing it,cutting off about a 1/4" to 1/2" at a time on each side.,. one ham i knew used flurecent light bulbs also. kind of a field strength meter.And this was with solid state rigs .Most of his station was homebrewed. Long way away from instant gratification on a meter that might not be telling you the whole story. old technology it might be but its still applicable today.Dont trust your meter. double verify.With the money we spend on our equipment these days we have to.Use what was taught in the license classes and from your elmers. Also, big point, whe you are pre matching your rig before transmit, the noise level will decrease and the signals will get clearer and louder. peak on those,and then try to get an swr reading. Also it would behoove alot to use a field stength meter also. it gives you the informaion that tells you wheter or not your system is efficient. 73 david ac9xh |
Re: sBitx antenna-first warning
I used to use an ammeter and a neon bulb. tune to max on both. Also,It helps to cut the antenna to band resonance.
I have several antennas ,one for each band i run, also i use a homebrew vertical 3 ft above ground with no radials and this one is the one i use? from 80 to 6 meters. i actually have to use my homebrew match for it.
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All my antennas have been cut for band resonance, i dont use a commercial match except for my ubitx v6 which i installed inside of it.. For my other ubitxs and bitxsi use a homebrew match using 15 turns of #22 gauge wire with a 100 pf variable? to help match to the antenna and a $5 dollar swr meter inline. Ive used this setup for all my radios, and including ubitx v3,v6,bitx40, patcomm pc 500, argonaut 509,.
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Sometimes, if your antenna is crappy or not designed properly, or have feedline problems etc ,you can"tune" the "antenna tuner and receive almost a 1:1 and never get out very well because of the false sense of security with an antenna tuner. I dont like the term tuner We all use, because you are not tuning the antenna,but just creating a compatible match from radio to cable.
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You might check your coax,fittings and antenna connections. With an open circuit(break in the coax at the fitting or antenna)you will take awhile to get any match impedance wise. If you have an auto antenna match, and it starts clicking for over 6 to 14 seconds, more than likely an open somewhere or a really big problem with your antenna, .I personally experienced this with the ldg z100. had a cable break right at the fitting.
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Just my personal take of it all. And i have never popped a final on any of my ubitxs or bitxs.
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DAYLIGHT RADIO
Dear Group,
Does anybody have the .stl file for the plastic toroids for the DAYLIGHT RADIO who would be willing to share? Also, What type of filament was used for the toroids?? Is PLA good enough or is it something more exotic? In the Daylight radio online description and building notes.? The Trifilar transformers and not described as to core and number of turns.? I suspect that they are the same as the ones in the uBITX but just checking to be sure. Take care and have fun, 73 Dave WA5DJJ SUPER GRABBER WEBSITE: EMAIL: dhassall@... |
Re: sBitx antenna-first warning
Hi I realized a swr Meter very effettive.? I posted this video to show how It works 73 de iz0fyl Luca Il dom 7 ago 2022, 11:57 PM Pierre FK8IH <jb.gallauziaux@...> ha scritto: <A better solution would be to have a power sniffer that will reduce the power when it exceeds the upper limit and increase it back as the swr improves.> |
Re: sBitx antenna-first warning
Pierre FK8IH
<A better solution would be to have a power sniffer that will reduce the power when it exceeds the upper limit and increase it back as the swr improves.>
Yes, my old Yaesu FT897D has that : "Hi SWR" lights on with SWR>3:1 and the power is reduced... 73 - Pierre - FK8IH |
Re: The Daylight Radio
¿ªÔÆÌåÓýDear group, I printed out the .stl file that was on the website but it was
different that the one shown in the pictures.? here is what the one I printed look like: Take care and have fun. 73 Dave WA5DJJ -- 73 Dave WA5DJJ SUPER GRABBER WEBSITE: EMAIL: dhassall@... |
Re: Initial Testing
#sBitx
Anthony Good
LOL.? You're right.? I should probably get out of the habit of doing a sudo bash first thing when I bring up a terminal.... On Sun, Aug 7, 2022 at 12:16 PM AI4AI <iamai4ai@...> wrote:
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Re: Initial Testing
#sBitx
¿ªÔÆÌåÓý..and, maybe again? ;) should probably start with a 'sudo'; i.e.:? sudo chown pi:pi /home/pi/sbitx/data/user_settings.ini (and type in the user's (pi) password if prompted) ...even though the file is in the user's directory (and the user has full permissions there), they lack sufficient privilege to alter the file ownership away from root
On 8/7/22 10:24, Anthony Good wrote:
Well, I screwed that up. ?:-D ? ?I meant: |
Re: sBitx handy
#sBitx
I will do it later tonight. On Sun, Aug 7, 2022, 8:33 PM Anthony Good <anthony.good@...> wrote:
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Re: Postman came with a box from hfsignals
By some odd?coincidence, I started receiving DHL Phishing emails right after I ordered.? I haven't received any other confirmation, either, but after getting all of these fake tracking alerts, I emailed HFsignals and was told my order would ship in a couple of days.? Still waiting, but I have no time to devote to it at the moment anyway. Neil Goldstein |
Re: sBitx handy
#sBitx
Anthony Good
The wiki in GitHub might be a good place for tips like this, if Ashhar wanted to activate the wiki... On Sun, Aug 7, 2022 at 10:58 AM Bob Benedict, KD8CGH <rkayakr@...> wrote: I found the display way too bright. You can reduce it by the command: |
sBitx handy
#sBitx
I found the display way too bright. You can reduce it by the command:
sudo sh -c "echo nnn > /sys/class/backlight/rpi_backlight/brightness" where nnn is a number from 1 to 255. I set mine down to 80, which is much better for my eyes and reduced power draw from 1.2 A to .9 A. Please consider adding other handy tips to this thread. -- ? 73 ??? Bob? KD8CGH |
Re: Sbitx group
¿ªÔÆÌåÓýThe groups.I'm bitx20 group has over 7,000 members, and the group currently covers several different HFSIGNALS products/designs. If a second groups.io were created I'd join it (I have an sBitx on order), so the qty of mail I'd receive from both groups wouldn't change.The current members of bitx20 likely fall into one of three groups: A) No interest in sBitx at all B) Mild interest in sBitx (potential future customer or just curious) C) Own/have on order an sBitx I suspect group A's desire to ignore threads related to sBitx could be managed by list members getting in the habit of including hashtags in the subject if radio-specific posts, be it #bitx20, #bitx40, #ubitx, or #sbutx. It will never be perfect, but if many/most do this individual list members can trim the number of emails they see. I suspect hfsignals is really only interested in having all comms in one group. Just a thought, Ken, N2VIP On Aug 7, 2022, at 08:18, Bill <groups191227@...> wrote:
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Re: Initial Testing
#sBitx
I was wondering what the earlier mail about chown root:root would do! I think that we can read the ui layout from another text file, lets say called layout.ini. Each section of the file layouts out one control.? Upon loading, it can relocate and resize the layout. All the stuff like fonts and colours are in tables that can be re-read. It will be fun to have this. One could have differenr layouts for different modes. - f On Sun, Aug 7, 2022, 7:54 PM Anthony Good <anthony.good@...> wrote:
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