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Re: sBitx v3 stopped producing RF output after long FT8 operation #power #rf #sBITX_v3
Do you have 1V here when you transmit?
By sa7buj@... · #115956 ·
Re: sBitx v3 stopped producing RF output after long FT8 operation #power #rf #sBITX_v3
I have checked signals with the scope (measured with 1:10 probe with DC coupling, 500 mv/div so 5V/div considering probe). Ground level: DC level on drains of finals without RF: Voltage with RF on
By WZab - SP5DAA · #115955 ·
Re: Looking for the V2 Hardware Upgrade Info
Thanks David. Although this doesn't address the necessary upgrades to keep the IRFZ24Ns in place; it does help to convert a V2 to a V3. > > >
By JJ - W9JES · #115954 ·
Re: sBitx v3 stopped producing RF output after long FT8 operation #power #rf #sBITX_v3
Hello Evan, I have verified that bias circuitry works properly. I have even checked that the finals have full power suply voltage on their drains (13.3V) and that its DC value drops to ca 1V when I
By WZab - SP5DAA · #115953 ·
Re: uBITx v3 upgrade
Fred, There is a different answer for each individual.? Do you want to operate CW regularly?? Do you use headphones regularly?? ?Do you want to gain skills in hardware, software, or both?? These
By Evan Hand · #115952 ·
Re: zBitx - Progress Update
Excellent update. It is great to see the work being accomplished. I will? be ordering after the rush dies down.
By Tophall · #115951 ·
Re: #zbitx Spam, Fishing, and Unwanted Email #zbitx
Humans are truly the biggest risk and it is enough to stumble once. -- Gyula HA3HZ
By HA3HZ · #115950 ·
Re: Looking for the V2 Hardware Upgrade Info
As far as I remember, several people tried several solutions that were discussed in the forum. Personally, I implemented a different version, a more complicated solution. This involves more work and
By HA3HZ · #115949 ·
Re: uBITx v3 upgrade
Thank you all for the comments. I will dig into some of the recommended mods for the v3 and see what I can do! -Fred KC3HMS [email protected]> wrote:
By Fred Buecker <tfbiii2002@...> · #115948 ·
Re: #zbitx Spam, Fishing, and Unwanted Email #zbitx
Believe me, I'm covered.? I deal with cybersecurity every day but these emails can, and probably will, snag someone else with fewer security checks.? Another aspect to consider is the groups.io
By Kevin · #115947 ·
Re: uBITx v3 upgrade
Thanks Evan! If the best option is to upgrade, it might be best to just get the newer kit from AmteurRadioKits. What am I missing tho in that they use a v5 for that as opposed to the v6? Is it
By Fred Buecker <tfbiii2002@...> · #115946 ·
Re: #zbitx Spam, Fishing, and Unwanted Email #zbitx
Kevin, you need to fix the problem on your own computer so that spam and similar infected files don't get to you. Use a built-in antivirus that also filters your emails. -- Gyula HA3HZ
By HA3HZ · #115945 ·
#zbitx Spam, Fishing, and Unwanted Email #zbitx
Hello, I'm now seeing spam and spearfishing attempts via this group's threads and as a result of Ragav's shipping email last month.? Can the group owner go through and review the privacy, security,
By Kevin · #115944 ·
Re: Error starting sBitx v4.3 64 bits
It appears that there is sound on the TFT you are using and the Pi is recognizing it. You can run *aplay -l* from the terminal to verify. You must have the Wolfson Audio chip mapped as the first
By JJ - W9JES · #115943 ·
Error starting sBitx v4.3 64 bits
Good afternoon, I had a Raspberry TFT screen saved and today I put it on a sBitx computer version DE. But now a problem has appeared, the sBitx does not start and gives the error
By ramonlh@... · #115942 ·
Re: sBitx v3 stopped producing RF output after long FT8 operation #power #rf #sBITX_v3
Hello Wojtek, I had similar problems with my DE.? That turned out to be overheating drivers in one instance and a failure in the Q9 and Q101 equivalent circuits (the DE documentation did not have
By Evan Hand · #115941 ·
Re: We have received your update for Email
Seriously, this is a clearly suspicious email and no one should click on anything within it. A link to a "statement" for information on an "account" at a company that doesn't identify itself in the
By Ken N2VIP · #115940 ·
Re: zBitx - Progress Update
Thank you HFSignals
By kc5kwz · #115939 ·
Re: We have received your update for Email
It is suspicious. Mark as junk/spam and delete. Got one myself this morning. Bruce W. ~KV4OE~
By Black Wolfe · #115938 ·
Re: sBitx v3 stopped producing RF output after long FT8 operation #power #rf #sBITX_v3
If one of the MOSFETS **shorts** the entire system fails to operate because it shorts out the power supply, may blow fuses, and you cannot establish the needed voltage on the system due to the
By Gordon Gibby KX4Z · #115937 ·