开云体育

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.

As I recall, you showed some alarmingly low signal levels as the frequency went up. If the si5351 can only give 8ma at dc, your notes suggest it gets awfully small at 45mhz+SignalFreq into the first

I suspect the replacement diode went in the wrong way around, and that was what smoked. Drilling the board to link C130 (and D7) to the relay coil is a bit of overkill: that bit of track goes to a

I posted the RMS values of all four output modes yesterday. Do you also want the P-P values? Vince.

Oh and I forgot to say, I think if either of those two Schottky diode's conducts, you get an output. I don't think you have to make both of them conduct simultaneously. So I think the barrier to get

Well again, I didn't follow all of that, but if you put 8 mA into 50 ohms, you get .4 V peak; 0.8 p-P (Proof: use a halfway rectifier on your home outlet 120 V RMS, and you'll discover that you get

Be great for EU working. Phil - G7BZD

Hmm, my analysis in post /g/BITX20/topic/6215251 ( /g/BITX20/topic/6215251 ) might be full of beans. The SiLabs document an619 shows that registers 16,17,18 can set

And what would happen using Si5351 with analog switcher mixer (Tayloe detector). The square wave only close and open the switch.- LU5DNM -----Mensaje original----- De: [email protected]

Sold Thanks all for the interest ?73 ?? David ???? N8DAH

Yep. http://bitxhacks.blogspot.com.au/2017/01/nd6ts-rf-gain-control-with-tombstoning.html Vince.

A junction transistor like the mmbt3904 (the bitx40 schematic is incorrect in labeling them bc849) is at first glance symmetrical, running it upside down with emitter and collector reversed could sort

I believe this is the latest on ubitx schematics: ? ??/g/BITX20/message/33255 ( /g/BITX20/message/33255 )

Ashhar, I heard you are working on an updated uBITX circuit, is this true? When will the drawings be available? Art KB8HGW

I agree that there is too much QRM ?with the BC station close by as I commented a few weeks ago. Before picking a new one like 7282, why don't we check for a few weeks to make sure we don't run into