Hi George, I would suggest looking at the S-meter while removing power to the PAM8610 amplifier module. I've also been playing with using a Class D audio amplifier in my V.4 uBitX, but so far I've not

#ubitx-help #v5 #bfo #filters #noise

You should figure out where in the circuit the station is breaking-in from. If you are hearing all the stations at once, it cant be breaking from the front end (it has two narrow filters). The other p

#filters #v6

Hi, Having seen your later message I now see you have the variable bandwidth filter. That should be very good, my filter is the one with 2 filters for CW - a less complicated filter. Judging by the pe

#filters #v5 #bitx20

Where do I find full info on this "Daughter" board? Steve/G4MJW

#ubitx #filters #parts

Thanks Reed for your input. I will stick to the external LP filter. I really appreciate your efforts in the V 1.5. Barry

#ubitx #v6 #ubitxv6 #filters

A few months ago I tested a nice 10.7 Mhz crystal filter I bought years ago. Most likely I did damage it with a 7dbm dds, but I cannot remember exactly. Testing using an attenuator and Antuino in SNA

#filters #nano

Jonathan I appreciate your interest. Start with this article, let me know if you have any issues getting it -- https://www.arrl.org/files/file/QEX_Next_Issue/Nov-Dec_2009/QEX_Nov-Dec_09_Feature.pdf Th

#ubitx #filters

Thanks Dave for your interest. The Board and additional parts are on their way to you. Thanks for everyone else's replies. Best wishes Derek G4VWI.

#parts #nextion #v4 #ubitx #filters

Maybe this? Have a look at Errors and learning with Bitx40 just a few topics down . . . F- Subject: I only received the audio from an AM radio. The frequency changed but nothing else was heard. Soluti

#bitx40help #ubitx #filters #bitx20 #bitx20help

Hi Rob, No problems. Ok for the regulator, that should work just fine. Regarding the place to insert the Teensy, here are my thoughts: If you have an AGC then before the volume control as you mentione

#ubitx #teensy #filters

I think you meant Mistakes are made by those who do things, but then even those who never do anything make a mistake by not doing anything. and it is so true. . _._,_

#bitx20 #bitx20help #bitx40 #bitx40help #filters

I was offline yesterday. Did these items end up being sold? 73 Mark

#filters #ubitx

Hi Woody, Thanks for your interest in the smart filter controller. As I answered your question via email, I'll include the core of the reply here for others that may have the same question. -------- I

#nano #arduino #filters #ubitx

This might have been posted before, so forgive me if doubled up, but an interesting web page on how to use Axicom rf type relays. http://www.i1wqrlinkradio.com/antype/ch97/chiave50.htm vk3pe

#ubitx #filters

When I look at my transceiver output on transmit, I don't connect any antenna to my SDR dongle. I also have a 50 ohm SMA terminator that I sometimes connect to the dongle to greatly reduce the signal

#ubitx-help #filters

Bruce Possibly nothing is for sale yet, but note lots of effort around the world to improve this. One solution is a daughter board that hosts new output relays. Others are evaluating more substantial

#ubitx #filters

I think the 45mhz filter mod can fix this. Maybe someone more knowledgeable here can comment. Joe

#ubitx #filters

Carefully measured results were published on this forum. Construction: https://qsl.net/nf4rc/2018/OutboardRelaysDesignDocumentTry3.pdf

#filters

20m is about the best.

#ssb #filters #ubitx #ubitx-help

He's got some unique, properly designed, well documented stuff there. Jerry

#calibration #filters #parts