开云体育

Hello ! I'm sorry but the spurs are getting worse if I terminate all outputs to 50 Ohms ! If only one ouptut is activated the signal is clean ! Does someone did similar measurments on Raduino in

You mean remove just temporary for testing?? I'm guessing k1 is the solenoid switch right Barrett KG5SSO

Amendment: *your* multimeter ... I assumed it to be a modern digital one. The old analog 'originals' measured Current - again, always - a completely different philosophy that relied on the current

Here's an old post on diode RF probes and AC measurements in the Bitx40 power amp: ? ?/g/BITX20/message/22764 ( /g/BITX20/message/22764 ) And the bottom paragraph

Point of basics: the multimeter measures *Voltage* - always! When measuring Current it is measuring the voltage dropped by its internal (small) resistor in series with whatever load you conned.. As

yup...it does! I also added the external resistor -- Paul Mateer, AA9GG Elan Engineering Corp. www.elanengr.com NAQCC 3123, SKCC 4628

FYI it has 3 filter caps and a 6v tranzorb on the power line and a feed-thru cap on the data line... jjpurdum@...> wrote: -- Paul Mateer, AA9GG Elan Engineering Corp. www.elanengr.com

Here's Wayne's 100pf hack: ?http://bitxhacks.blogspot.com/2017/02/bitx40-spectral-output.html ( http://bitxhacks.blogspot.com/2017/02/bitx40-spectral-output.html ) But I think credit for that should

If your meter is set to 10A shouldn't you be plugging the leads in to COM and 10A?

David WA7NJB If you can add an RF detector probe to your test equipment inventory it might be very useful for measuring RF levels at various points in the transceiver. There are kits for RF detector

OK. ?So a few more facts for the puzzle. -One of the extra capacitors is 100 pF in parallel with L7. ?As per Wayne NB6M as written up in BitX Hacks Blog. -I tried to measure mA again, and something

You're probably very close to a working rig. If all you are doing is pressing the PTT button, you won't see any RF going out. On a single sideband rig, you only get RF to the antenna wen there is

My bench is only good to 1GHz, unless I can figure out a way to put these scopes in series! Vince.

Disregard this, I see you found it. Vince. -

Well, I sure am grateful for people with great test equipment!!!! Sent from my iPhone

You either don't recall or you didn't read it. Yesterday afternoon I re-measured using a Tek 11402 scope and corrected my previous comment. Vince. -- Michigan VHF Corp. http://www.nobucks.net/

I will try again when I get home tonight, and report back.

What were the numbers you got when measuring current?

There are many things that I don't know, and I sincerely thank all of you for the resource that is growing here in this group. I am looking for some assistance troubleshooting a Bitx40. Go easy on me,

Ah, ok. ?I'd somehow missed this one. With the 8ma setting, you have 735mv rms, or 14.7ma rms. That's a more robust driver than I was expecting. ? Especially considering that this is an rms value.