开云体育

since I installed a swr meter kit i get this message randomly when I ptt
the only thing the swr has to do with the pcb is a bypass with the antenna circuit. Swr kit has a switch and when it is turned on it is ok. It works normally although it takes a little bit of power down. But when turned off I get that "dial is locked"

i have unplugged all cw wires but the ptt sensor just to check but same issue

The message "dial is locked" is normally only displayed when you turn the
tuning pot while you are in TX.
Apparently your Raduino occasionally "thinks" that the tuning pot changes
position while you are in TX, whereas in reality you didn't turn the pot.
This could be caused by some RF noise on the ANALOG_TUNING line (which
connects to the tuning pot slider).
It is important to have the supplied 0.01uF cap installed on the pot to
reduce noise.
RF noise can also increase when SWR is poor. Perhaps your SWR meter
somehow affects your SWR when it's turned off?

73 Allard PE1NWL

Allard, I've noticed that after I tune around a bit the frequency will occasionally change by 1 increment. I think there are stresses in the wiper mechanism of the potentiometer and that makes it move. Doesn't happen all the time. I've also noticed that if I move the front panel of my Lexan "enclosure", it can torque the VFO pot and cause it to move an increment up or down. Would that small change cause the dial to lock while transmitting? Could explain what EA3IAV is seeing...Perhaps having the lockout sensor trigger on something greater than "any change"?

Mark
W4MAP

I have changed the whole swr circuit. This timeusing shielded wires. I skso tryed a new swr led circuit "tayloe swr indicator"
I still have interference on the funcions of the raduino. This time even more severe, with all kind of functions being toggled while transmitting (rit, locked dial etc....)

so i give up. I have uninstalled everything for the swr

I have put out the whole swr wires. It is weird now i have it when I use a good UNITEK power source, but when I use a crappy one It doesn' t show up

what do you suggest me to do? Put a condenser on both sides of the tunner central wire??

I have put 0.1uF cap on both ends of the msin tuning wire and when i put the second cap on the purple wire on p1 wire set the tunner drives crazy and tunes by itself?

Wiki says

Main board to tuning pot middle pin (and 0.1uF caps on both ends)

i have checked caps and they are ok

On Sun, Jun 25, 2017 at 05:50 pm, <kivafolks@...> wrote:

Would that small change cause the dial to lock while transmitting? Could explain what EA3IAV is seeing...Perhaps having the lockout sensor trigger on something greater than "any change"?

The lockout is only triggered when the analog voltage changes more than 5 steps (there are totally 10,000 steps from min to max pot position). 5 steps is normally sufficient to prevent the lockout being triggered by noise that may be picked up by the wiring or from the pot itself. We could increase this value to make it less susceptical to noise, but in EA3IAV's specific case I doubt it will help. The problems as he describes them indicate that there's more going on than just a bit of noise on the potentiometer, perhaps grounding issues, poor or incorrect wiring, faulty components, etc?

73 Allard PE1NWL

I am stripping down everything to seek for the culprit. I see that sometimes when i speak louder the lcd dims a little, like if there is not enough power... but the power supp is 10A!
i see it drains 1A

I have been testing around and looks like there is an issue with the audio ground and ptt ground
if I use a dedicated Ptt key and a separate electret mic there is no " Dial is looked"
any hint to solve this with my 4 pins baofeng?

Ok. Here is how I solved this.
i have completlyvredone the wiring keeping the negative sidew all togheter and positive ones all togheter.

not mixing grounds from other places!

On Sat, July 1, 2017 14:21, EA3IAV wrote:

Ok. Here is how I solved this.
i have completlyvredone the wiring keeping the negative sidew all togheter
and positive ones all togheter.

not mixing grounds from other places!

Good! Yes, correct grounding from one central ground point is usually
recommended especially in RF environments. Glad you were able to get it
working!

73 Allard PE1NWL