开云体育

Thank you for your reply.. So the one that I bought is the electret condenser mic.? When I didn't connect the mic to the circuit the voltage from 4.7KOhm resistor is about 9.5-10Volt. But when I

I replaced both BS170’s and solved the bias current problem. ??I re-soldered both T1 & T2. ??That may have been a contributor. ?I ended up using a 470 ohm resistor across their drains instead

I had the wrong link for the FTDI cable.? It should be https://www.ebay.com/itm/201486735007? Also worth noting, you could probably save on shipping to order your parts from less suppliers than I

I guess this is a wishing well because I just hit 1,128.9mi/w with a QSO from Brazil. Just in case this thing works....oh mighty list I still haven't won the lottery. ? -- www.bitxmap.com (

Well took it out of the box and wired up the connectors and all and having on the bench spread out. haven't measured power in any exacting way for at 11V I see 6W at 7mhz.? Receives well. I then

Rogier has a few threads open on his problems.? Casually, hard to keep up with where he is at the moment. He has shared more information than is contained in this thread. I usually _try_ to look a

I have often thought of using the IRF's in common gate mode to avoid gate capacitance issues. Never came across such a design, gain would be slightly low but should have better stability and better

The AGC and Pop Fix boards have both been redone and are already at the board house. Copies of the new ones are in the "Files" section.....as before.? Some of the changes were very slight but it will

While a soldering iron and a screw driver is all you need to setup the ubitx, i would encourage everyone to experiment with testing and measuring. A resistive swr bridge is just three resistors and a

Then board seems alright. It looks like some raduino wire is grounded that shouldnt be grounded. Check your wiring carefully against the wiring diagram at HF Signals. - f

What you are missing are some resistors plus these comments from the Raduino source code file? ubitx_keyer.ino: * CW Keyer ?* ?* The CW keyer handles either a straight key or an iambic / paddle

Yup, that would work. I'm thinking of something useful for detecting low level RF when trying to figure out why the transmitter is putting out 1 Watt instead of 5Watts. But the scaling resistors in

I made a mag loop for 40 and am working on the homemade capacitors remote tuning mechanism. I started with an arduino and servo, and now going KISS with a DC 0.6 RPM motor, momentary rocker switch,

By the way, thanks Doug for taking the time to post your work on doing this. I'll very interested in doing the same thing! Roy WA0YMH

I followed a similar approach.? Mounted a 4 port usb hub inside the case.? One port for the radiuno, one for a 6 buck usb sound dongle, two free for future use (rtl dongle for panadapter and maybe a

How can the plugged in paddle work when only the tip (or ring) and ground of course,are connected?? Don't both tip and ring have to be wired?? What am I missing?

Jerry,??#49555 ( /g/BITX20/message/49555 )

I just posted how I did it.? There are many other ways but this should get you started.?/g/BITX20/message/49561 -- www.bitxmap.com ( http://www.bitxmap.com )

It seems almost every day (or hour) someone has a question about connecting their radio for digital modes.? Following are my cobbled together notes that if the group deems worthy could be the start

The diode detector could be dead-bugged. Better might be pads for an AD8307 on one of those boards someday.