开云体育

Ain't that essentially what we're already doing on the output? OK, so we do that on the input too: cleaner CW. Is there RC that can do it? 73 Dex

35 wpm good comfortable send speed. Still use the noggin to decipher? ;)

Do us a favor and include the schematic you are working from.? Then we don't have to repeatedly query and guess. Allison

Sure you can go though all that effort and replace the odd harmonics with even ones that are harder to filter.? Also the added switching. Or just include a series wide band pass pass filters?the

Jon Q13?? Please notice the designer numbers the transistors in groups -- so they are not consecutive except within a group.? as you look at the schematic you will see that the numbers begin with

I glimpsed an article a while back that said the SI5351 could be driven well beyond HF. If that could be 120MHz, let's fantasize: 120MHz is within the capabilities of an up/down counter. Let's say

Adjusting the BFO did the trick. For my v5 the BFO is set at 11.055.3 Both v3 the BFO is at 11.996.1 One v4 is at 11.996.7 Thanks!

Look at the receiver output of the background galactic white noise using the waterfall of ANY digital protocol. It should fall off under 500 Hz.

Jon, You are welcome.? I did not include the code snippets to do anything other than let you know the default frequencies.? The thing to watch for is that the frequencies are very important for the

Evan Thank you for the great info. For the time being I'm staying away from the software. Programing is fun but I'm a nuts and bolts guy until I pushed, kicking and screaming into the programing

TP12, 15, & 18 are near and under the pcb that carries the raduino. I'm planning on rigging an 750Hz audio signal to the mic connection and start my signal trace from there. I have to stop hit or miss

WPX CW contest is approaching... I had still one unsoluted issue with my ver. 3 ubitx (with still the original firmware). Sending perfect CW via a contest program. The ubitx likes clean contacts to

“No antenna here, and ham antennas are prohibited in the RV park where we are staying.” you our need to find a different RV park. ?Hi hi

Thanks I’ll give that a try and see how that goes.

I would use psk like interfaces. Of course a block capacitor, an audio 1:1 600ohm transformer, a fixed attenuator plus a volume potentiometer between the ubitx mic input and the output of the sound

This suggests that you BFO is putting the audio too close to the SSB filter.? I ran a number of tests when checking out my SDRPlay as a signal analyzer and found the same thing.? I had to adjust the

Skip, Thanks, that clears that mystery about the IRF510 and the RD15HV. OK where's Q13? The problem I have is the receiver works weakly(audio amp needed?) and near 0 output RF voltage. I might also

In addition to the capacitor that Robert is suggesting, be sure to try the level adjustment on the PC.? I found that I had to run at very low volume levels when doing my two tone tests using the PC

Just got my v5 board on Saturday. Got it up and running today. I notice on all bands when keying up using just PTT in SSB a carrier is present and It’s noticeable on 75 meters when making QSO’s as

the speaker is fine, the wiring is also. Question whether PWR1 and PA-PWR voltages are galvanically separated from each other? When I unplugged the PA-PWR wire there was tension on the heels.